2020-01-29 Tracking News

Contents on 29 January '20

Traffic Report -- fourteen objects
IAU Minor Planet Center
- NEOCP Activity -- 128 listings
- New MPECs -- 22 MPECs
Observers -- 30 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1088 risk-listed objects, 53 have had news in the last 31 days. Updated at 2331 UTC on 29 Jan.
Ephemerides for risk-listed objects & close passers
News archive (old) & news image catalog (discontinued)
Object Links - mainly for radar targets & close passers (mostly discontinued)
Observing Campaigns (old)

The latest A/CC news is available via framed access, RSS news feed, or redirection.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.

Traffic Report on 29 January '20

Fourteen objects reported inside ten LD

There are fourteen asteroidal objects reported inside ten lunar distances (LD) of our home world today. The closest is 2020 BJ7, which moves away from 3.28 to 7.68 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
0.18 LD Jan. 25	2020 BH6	7 m	8.23 to 10.40 LD	Jan. 20 - 29	intruder, exits ten LD

1.24 LD yesterday	2020 BJ7	8 m	3.28 to 7.68 LD	Jan. 26 - 30
2.00 LD Jan. 21	2020 BB	7 m	6.24 to 7.01 LD	Jan. 9 - Feb. 2	NHATS target, risk

3.69 LD Feb. 4	2013 BA74	27 m	9.32 from 10.87 LD	today - Feb. 9	enters ten LD - DOU
4.5 LD tomorrow*	2020 BL11	9 m	4.5 from 4.6 LD	Jan. 17 - Feb. 11	NEW, EPU +/- 13 mins.* - MPEC

5.09 LD Jan. 26	2020 BH3	21 m	6.37 to 7.40 LD	Jan. 20 - Feb. 1	NHATS target, risk
5.65 LD Jan. 31	2020 BZ4	9 m	6.60 from 7.83 LD	Jan. 27 - Feb. 4	NHATS target
5.89 LD tomorrow	2020 BV7	9 m	6.00 from 6.61 LD	Jan. 26 - Feb. 3	NHATS target
6.23 LD Jan. 25	2020 BW10	27 m	8.25 to 9.48 LD	Jan. 21 - 30	NEW - MPEC
6.60 LD Feb. 8	2020 BL8	25 m	9.29 from 9.79 LD	yesterday - Feb. 18	NHATS target
6.89 LD Jan. 27	2020 BY4	20 m	8.58 to 12.04 LD	Jan. 26 - 29	exits ten LD, risk
7.60 LD Jan. 24	2020 BF9	17 m	9.39 to 10.22 LD	Jan. 19 - 29	exits ten LD
7.74 LD Jan. 24	2020 BF1	20 m	9.17 to 9.76 LD	Jan. 18 - 30	NHATS target
7.8 LD Jan. 25*	2020 BK8	7 m	9.8 to 10.9 LD	Jan. 22 - 29	EPU +/- 5 mins.*, exits ten LD

This report was generated at 2145 UTC with two discoveries announced late yesterday: outbound 2020 BW10 (MPEC) and already departed 2020 BY10 (MPEC), which slipped by us at about 4.3 LD on January 19th (uncertainty +/- 1.32 hours), and with a discovery from today, inbound 2020 BL11 (MPEC). Today's DOU MPEC has follow-up for inbound 2013 BA74 and six departed objects: 2020 BX9, 2020 BS1, 2020 BS, and including three risk-listed -- 2020 BK3, 2020 AY1, and 2019 YV1.

Approaching - sorted by 10-LD bubble entry date
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
9.62 LD Jan. 31	2020 BR8	26 m	11.85 from 16.58 LD	tomorrow - Jan. 31
2.8 LD Feb. 6*	2020 BF10	12 m	15.1 from 17.1 LD	Feb. 1 - 11	EPU +/- 8 mins.*, NHATS target
5.2 LD Feb. 9*	2020 BW5	17 m	22.8 from 24.8 LD	Feb. 5 - 14	EPU +/- 9 mins.*, NHATS target, risk
1.9 LD Feb. 9*	2020 BK10	19 m	28.4 from 31.1 LD	Feb. 6 - 13	EPU +/- 7.85 hours*
* EPU = Earth passage uncertainty

Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity on 29 January '20

The MPC's NEO Confirmation Page has 128 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 128 objects listed. Of these, 66 were "one nighters." So far The Tracking News has counted a total of 166 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 29 January '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-B242 time-stamped "02:10 UT" - 2020 BC11 - see below
MPEC 2020-B243 time-stamped "02:22 UT" - 2017 DO34 - see below
MPEC 2020-B244 time-stamped "02:27 UT" - 2017 BN3 - see below
MPEC 2020-B245 time-stamped "05:14 UT" - 2020 BD11 - see below
MPEC 2020-B246 time-stamped "05:16 UT" - 2020 BE11 - see below
MPEC 2020-B247 time-stamped "05:20 UT" - 2020 BF11 - see below
MPEC 2020-B248 time-stamped "12:32 UT" - Daily Orbit Update - see below
MPEC 2020-B249 time-stamped "13:26 UT" - 2020 BG11 - see below
MPEC 2020-B250 time-stamped "13:30 UT" - 2020 BH11 - see below
MPEC 2020-B251 time-stamped "14:49 UT" - 2020 BJ11 - see below
MPEC 2020-B252 time-stamped "15:38 UT" - 2015 PZ228 - see below
MPEC 2020-B253 time-stamped "17:45 UT" - 2020 BL11 - see below
MPEC 2020-B254 time-stamped "17:49 UT" - 2020 BM11 - see below
MPEC 2020-B255 time-stamped "18:28 UT" - 2020 BN11 - see below
MPEC 2020-B256 time-stamped "18:39 UT" - 2020 BO11 - see below
MPEC 2020-B257 time-stamped "18:47 UT" - 2020 BP11 - see below
MPEC 2020-B258 time-stamped "18:55 UT" - 2020 BQ11 - see below
MPEC 2020-B259 time-stamped "19:04 UT" - 2020 BR11 - see below
MPEC 2020-B260 time-stamped "19:44 UT" - 2020 BS11 - see below
MPEC 2020-B261 time-stamped "20:45 UT" - A/2020 B1 - see below
MPEC 2020-B262 time-stamped "21:38 UT" - 2020 BY11 - see below
MPEC 2020-B263 time-stamped "22:53 UT" - 2020 BZ11

MPEC 2020-B263 - "22:53 UT" - 2020 BZ11

K20B11Z 2020 BZ11 (borderline-small, H=21.9 ~141m) was picked up at 1211 UT on 19 Jan. by Pan-STARRS 1 (PS1), observing it at Jan. 19.51p1 and 24.45-49p4. This detection was confirmed by Pan-STARRS 2 (PS2) (Jan. 19.51-55p4, 21.49-51p3, 25.50-52p2 & 29.48-50p3).

MPEC 2020-B262 - "21:38 UT" - 2020 BY11

K20B11Y 2020 BY11 (risk listed, Earth MOID=0.8 LD, H=27.8 ~9m) was picked up at 0952 UT on 26 Jan. by the Mt. Lemmon Survey (MLS), observing it at Jan. 26.41-45p8 at G=20.5-8 and 29.40p3 at G=22.1-8. This detection was confirmed by Magdalena Ridge Obs. (MRO) (Jan. 26.45-47p4), Astronomical Research Obs. Westfield (Jan. 27.24p3), and Steward Obs. Mt. Lemmon Station (Jan. 28.34-37p3 at G=20.7-22.5).

MPEC 2020-B261 - "20:45 UT" - A/2020 B1

AK20B010 A/2020 B1 (q=1.747 AU, Q=97.362 AU, TP=2019 Dec. 25.95681 TT) was picked up at 0859 UT on 19 Jan. by PS1, observing it at Jan. 19.37-41p3 at w=22.06-37, 21.37-40p3 at w=22.11-44, 22.37-40p3 at w=22.15-57, 23.51-55p4 at w=22.05-50, and 26.38-39p2 at G=22.5. This detection was confirmed by R. Wainscoat on Mauna Kea (Jan. 29.34-35p5 at G=22.08-20).

MPEC 2020-B260 - "19:44 UT" - 2020 BS11

K20B11S 2020 BS11 (small asteroid, Earth MOID=4.2 LD, H=22.6 ~102m) was picked up at 1127 UT on 26 Jan. by PS1, observing it at Jan. 26.48-50p3 and 28.36-38p2. This detection was confirmed by ARO Westfield (Jan. 27.14-16p4), GINOP-KHK (Jan. 27.92-94p3), Schwarzschild Obs. (Jan. 28.83p3), Visnjan Obs. (Jan. 29.02-03p3), Steward Mt. Lemmon Sta. (Jan. 29.21p2), and Sormano Obs. (Jan. 29.77p2).

MPEC 2020-B259 - "19:04 UT" - 2020 BR11

K20B11R 2020 BR11 (small asteroid, Earth MOID=7.0 LD, H=28.0 ~9m) was picked up at 0747 UT on 28 Jan. by MLS, observing it at Jan. 28.32-34p4. This detection was confirmed by PS2 (Jan. 25.45-47p3) and Steward Mt. Lemmon Sta. (Jan. 28.42-43p3 at G=21.1-6 & 29.31-32p3 at G=21.1-22.1).

MPEC 2020-B258 - "18:55 UT" - 2020 BQ11

K20B11Q 2020 BQ11 (small asteroid, Earth MOID=8.4 LD, H=24.4 ~45m) was picked up at 0812 UT on 28 Jan. by MLS, observing it at Jan. 28.34-36p4 at G=21.5-22.1, 28.45p4 at G=21.2-7, and 29.40p3 at G=21.1-2. This detection was confirmed by PS1 (Jan. 22.48-52p7 at G=21.8-22.6 & 23.47-51p4 at G=21.2-22.4).

MPEC 2020-B257 - "18:47 UT" - 2020 BP11

K20B11P 2020 BP11 (small asteroid, Earth MOID=9.7 LD, H=26.8 ~15m) was picked up at 0814 UT on 28 Jan. by MLS, observing it at Jan. 28.34-36p3 and 29.33p3. This detection was confirmed by PS2 (Jan. 23.59-60p3), PS1 (Jan. 25.47-50p3 & 27.41-45p3), and Steward Mt. Lemmon Sta. (Jan. 28.49p4).

MPEC 2020-B256 - "18:39 UT" - 2020 BO11

K20B11O 2020 BO11 (small asteroid, Q=4.092 AU, H=24.3 ~47m) was picked up at 0531 UT on 28 Jan. by MLS, observing it at Jan. 28.23-25p4 at G=21.7-22.4, 28.31p2 at G=21.4-6, and 29.22p3 at G=21.9-22.5. This detection was confirmed by PS2 (Jan. 21.35-37p3 at G=21.3-22.1, 25.40-43p3 at G=21.7-22.5 & 26.34-36p3 at G=21.3-6) and the Spacewatch 1.8m telescope (Jan. 29.24-26p3).

MPEC 2020-B255 - "18:28 UT" - 2020 BN11

K20B11N 2020 BN11 (risk listed, H=22.6 ~102m) was picked up at 0806 UT on 18 Jan. by WISE, observing it at Jan. 17.95p2, 18.08p1, 18.34p1, 18.47p1, 18.53p1, 18.60p1, 18.66p1, and 18.80p1. This detection was confirmed by UH/Tholen NEO Follow-Up CFH Telescope (Jan. 29.37p3 at G=22.20-32).

MPEC 2020-B254 - "17:49 UT" - 2020 BM11

K20B11M 2020 BM11 (small asteroid, H=23.1 ~81m) was picked up at 0942 UT on 27 Jan. by PS2, observing it at Jan. 27.39-42p3. This detection was confirmed by PS1 (Jan. 23.33-35p2), Steward Mt. Lemmon Sta. (Jan. 29.16p4), and R. Wainscoat/Mauna Kea (Jan. 29.28-29p8).

MPEC 2020-B253 - "17:45 UT" - 2020 BL11

K20B11L 2020 BL11 (Earth MOID=4.5 LD, H=27.8 ~9m) was picked up at 0915 UT on 26 Jan. by PS2, observing it at Jan. 26.39-42p4. This detection was confirmed by the Catalina Sky Survey (CSS) (Jan. 29.30-31p3), MRO (Jan. 29.34-37p4), and Steward Mt. Lemmon Sta. (Jan. 29.38-39p3).

MPEC 2020-B252 - "15:38 UT" - 2015 PZ228

K15PM8Z 2015 PZ228 (i=47.6°, H=18.2 ~776m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Jan. 25.65p1 & 26.65p2)

MPEC 2020-B251 - "14:49 UT" - 2020 BJ11

K20B11J 2020 BJ11 (small asteroid, H=24.8 ~37m) was picked up at 0843 UT on 27 Jan. by PS1, observing it at Jan. 2.45-49p4 at G=22.4-23.3, 26.50p1 at G=21.1, 27.36-40p4 at w=21.37-80, and 28.39-43p3 at w=21.45-91. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 29.22-23p3).

MPEC 2020-B250 - "13:30 UT" - 2020 BH11

K20B11H 2020 BH11 (Q=4.050 AU, H=21.5 ~170m) was picked up at 0646 UT on 25 Jan. by the Zwicky Transient Facility (ZTF), observing it at Jan. 25.28p1, 25.37p1, 26.32p1, and 26.37p2. This detection was confirmed by PS2 (Dec. 9.47-52p3), PS1 (Dec. 19.51-53p3 & Jan. 28.46-50p4), Schwarzschild Obs. (Jan. 28.84p3), Visnjan Obs. (Jan. 28.97p3), SATINO-1 (Jan. 29.02-04p2), MRO (Jan. 29.14-16p4), and Steward Mt. Lemmon Sta. (Jan. 29.36-39p4).

MPEC 2020-B249 - "13:26 UT" - 2020 BG11

K20B11G 2020 BG11 (small asteroid, H=26.2 ~19m) was picked up at 0518 UT on 27 Jan. by MLS, observing it at Jan. 27.22-24p4 and 29.30-31p3. This detection was confirmed by PS1 (Jan. 19.33-36p3), MRO (Jan. 27.26-28p4), and Steward Mt. Lemmon Sta. (Jan. 28.21-22p3 at G=21.5-22.4).

<< DOU on 29 January '20 >> MPEC 2020-B248 - "12:32 UT" - Daily Orbit Update

Observations of risk-listed objects
K20B03K 2020 BK3 (small asteroid, arc=6 days, H=26.8 ~15m, close passer) from PS1 (Jan. 28.39-43p4)
K20A01Y 2020 AY1 (small asteroid, arc=24 days, H=25.2 ~31m, close passer, NHATS target) from Spacewatch 1.8m (Jan. 29.28-30p3)
K19Y01V 2019 YV1 (small asteroid, arc=36 days, H=25.2 ~31m, close passer, NHATS target) from Tholen 2.24m (Jan. 26.36p1 at G=23.43)
Observations of recently (no longer) risk-listed objects
K20A00K 2020 AK from PS1 (Jan. 28.58-60p2)
Observations of close-passing objects
K20B09X 2020 BX9 (arc=2 days, H=26.2 ~19m) from Pomona College Table Mtn. Obs. (PCTMO) (Jan. 27.46-50p4)
K20B01S 2020 BS1 (arc=7 days, H=26.3 ~19m, NHATS target) from PCTMO (Jan. 27.33p1, 27.37p1 & 27.43p1)
K20B00S 2020 BS (arc=13 days, H=27.9 ~9m, NHATS target) from the Spacewatch 0.9m telescope (Jan. 29.43-44p2)
K13B74A 2013 BA74 (arc=2 opp, H=25.4 ~28m) from North Obs. (Jan. 28.86-88p4)
Observation campaigns (NHATS targets, radar support)
K20B11D 2020 BD11 (arc=36 days, H=24.1 ~51m, NHATS) from Calar Alto Schmidt (Jan. 29.00-03p4)
K20B00W 2020 BW (arc=11 days, H=24.3 ~47m, NHATS) from PS1 (Jan. 28.38-40p2)
K19Y04L 2019 YL4 (arc=32 days, H=24.4 ~45m, NHATS) from Spacewatch 1.8m (Jan. 29.36-38p3 at R=22.5)
K08P02G 2008 PG2 (arc=3 opp, H=22.8 ~93m, NHATS) from ZTF (Jan. 27.21p2, 28.18p1 & 28.27p1)
03200 3200 Phaethon (1983 TB) (radar) from ZTF (Jan. 25.10-12p2, 26.11p1 & 26.16p1)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K20B11C 2020 BC11 (arc=144 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (Jan. 29.34-35p4)
K20B09N 2020 BN9 (arc=4 days, H=23.4 ~71m) from MLS (Jan. 28.19-20p4) and Steward Mt. Lemmon Sta. (Jan. 29.10p4)
K20B09J 2020 BJ9 (arc=9 days, H=24.9 ~35m) from MLS (Jan. 28.36-38p4)
K20B09E 2020 BE9 (arc=7 days, H=23.2 ~78m) from Steward Mt. Lemmon Sta. (Jan. 29.11p4)
K20B08O 2020 BO8 (arc=8 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (Jan. 29.44p3)
K20B06Y 2020 BY6 (arc=6 days, H=24.1 ~51m) from Steward Mt. Lemmon Sta. (Jan. 29.42p4)
K20B06G 2020 BG6 (arc=6 days, H=24.6 ~41m) from MLS (Jan. 28.21-23p3) and Steward Mt. Lemmon Sta. (Jan. 29.17p4)
K20B03O 2020 BO3 (arc=8 days, H=23.4 ~71m) from MLS (Jan. 28.19-21p4 at G=21.5-22.6) and Spacewatch 0.9m (Jan. 29.19-22p2)
K20B02T 2020 BT2 (arc=9 days, H=23.6 ~65m) from Spacewatch 0.9m (Jan. 29.11-15p3 at R=21.5-22.1)
K20B01V 2020 BV1 (arc=10 days, H=22.3 ~117m) from CSS (Jan. 28.35-37p2)
K20B01O 2020 BO1 (arc=10 days, H=22.1 ~129m) from CSS (Jan. 28.28-30p4), ATLAS Haleakala (Jan. 28.58-60p4), and Steward Mt. Lemmon Sta. (Jan. 29.42-43p3)
K20B00V 2020 BV (arc=32 days, H=22.6 ~102m) from M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (Jan. 27.94-96p3) and Steward Mt. Lemmon Sta. (Jan. 29.11p4)
K20A01G 2020 AG1 (arc=39 days, H=23.5 ~68m) from PS1 (Jan. 28.33-37p3)
K19Y02E 2019 YE2 (arc=39 days, H=24.7 ~39m) from MLS (Jan. 28.34-36p4)
K19X01F 2019 XF1 (arc=58 days, H=22.3 ~117m) from Spacewatch 0.9m (Jan. 29.24-30p3 at R=22.8)
K19X00G 2019 XG (arc=60 days, H=22.1 ~129m) from PS2 (Jan. 28.50-54p4)
K17D34O 2017 DO34 (arc=2 opp, H=23.6 ~65m) from Visnjan Obs. (Jan. 29.10-11p3)
K15Bo9K 2015 BK509 (arc=2 opp, H=22.3 ~117m) from Spacewatch 0.9m (Jan. 29.41-44p3)
K13D00U 2013 DU (arc=2 opp, H=23.9 ~56m) from PS1 (Jan. 28.53-56p4)
Observations of other objects
K20B07S 2020 BS7 (i=52.5°, Q=5.823 AU, arc=10 days, H=18.1 ~812m) from Steward Mt. Lemmon Sta. (Jan. 29.11-12p4)
K20B07R 2020 BR7 (arc=6 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (Jan. 29.16p2)
K20B05L 2020 BL5 (Q=4.212 AU, arc=8 days, H=20.6 ~257m) from PS1 (Jan. 28.53-56p4)
K20B04F 2020 BF4 (arc=8 days, H=20.1 ~323m) from MLS (Jan. 28.17-18p4)
K20B02S 2020 BS2 (Q=4.546 AU, arc=9 days, H=20.3 ~295m) from PS2 (Jan. 28.56-59p4)
K20B01E 2020 BE1 (arc=10 days, H=21.5 ~170m) from PS1 (Jan. 28.34-36p3)
K20A02Z 2020 AZ2 (arc=22 days, H=21.2 ~195m) from ATLAS Mauna Loa (Jan. 28.49-51p4)
K19Y07G 2019 YG7 (Q=4.975 AU, arc=40 days, H=18.6 ~645m) from PCTMO (Jan. 25.37p1 & 25.44p1) and ZTF (Jan. 26.27p1, 26.35p2, 27.33p1, 28.23p1 & 28.28-29p2)
K19Y05Y 2019 YY5 (arc=29 days, H=20.7 ~245m) from MLS (Jan. 28.35-36p4)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.1 ~513m) from ZTF (Jan. 25.23-27p3, 25.34p1, 27.25-26p2 & 27.32p2), CSS (Jan. 28.26-28p4), PS1 (Jan. 28.46-49p3), and ATLAS Haleakala (Jan. 28.53-55p4)
K19W06B 2019 WB6 (arc=64 days, H=20.5 ~269m) from ATLAS Mauna Loa (Jan. 28.46-49p7)
K19W03P 2019 WP3 (Q=4.375 AU, arc=93 days, H=19.5 ~426m) from Spacewatch 0.9m (Jan. 29.12-16p3 at R=21.8-22.1)
K19W02R 2019 WR2 (arc=65 days, H=19.3 ~467m) from CSS (Jan. 28.48-49p4)
K19T04Z 2019 TZ4 (Q=4.127 AU, arc=114 days, H=19.4 ~446m) from ZTF (Jan. 27.29p1 & 27.34-36p3) and PS2 (Jan. 28.57-59p3)
K19P02E 2019 PE2 (arc=177 days, H=20.5 ~269m) from Spacewatch 1.8m (Jan. 28.53-55p3)
K19N01M 2019 NM1 (arc=2 opp, H=20.8 ~234m) from MLS (Jan. 28.37-38p4)
K19M03S 2019 MS3 (Q=4.526 AU, arc=2 opp, H=20.3 ~295m) from Spacewatch 0.9m (Jan. 29.26-32p3 at R=21.4-22.4)
K18B07A 2018 BA7 from PS1 (Jan. 28.53-56p4)
K18B03N 2018 BN3 from PS2 (Jan. 28.61-64p4)
K18B00P 2018 BP (arc=3 opp, H=20.7 ~245m) from PS2 (Jan. 28.40-43p3) and ATLAS Mauna Loa (Jan. 28.42-45p4)
K16V05Q 2016 VQ5 (arc=2 opp, H=20.1 ~323m) from PS2 (Jan. 28.28-32p3)
K16C31W 2016 CW31 (arc=3 opp, H=21.4 ~178m) from MLS (Jan. 28.46-48p4)
K15XZ1K 2015 XK351 (arc=4 opp, H=20.3 ~295m) from MLS (Jan. 28.14-16p4) and ATLAS Mauna Loa (Jan. 28.27-29p4)
K15O78X 2015 OX78 (i=40.4°, arc=3 opp, H=20.0 ~339m) from Montelupo Obs. (Jan. 26.84-85p4), PCTMO (Jan. 27.30p1, 27.35p1 & 27.42p1), CSS (Jan. 28.20-21p4), and ATLAS Haleakala (Jan. 28.47-49p4)
K15H10B 2015 HB10 (arc=4 opp, H=18.3 ~741m) from PS1 (Jan. 28.61-62p2)
K15DK0E 2015 DE200 (arc=4 opp, H=20.2 ~309m) from Cancelada Obs. (Jan. 28.95-97p14) and Zuben Obs. (Jan. 28.96-97p8)
K15D53Y 2015 DY53 (arc=2 opp, H=21.4 ~178m) from PS1 (Jan. 28.39-42p3)
K14N64F 2014 NF64 (Q=4.904 AU, arc=5 opp, H=18.2 ~776m) from ZTF (Jan. 26.20-23p4)
K13U10V 2013 UV10 (arc=3 opp, H=19.7 ~389m) from ATLAS Mauna Loa (Jan. 28.28-30p4) and PS2 (Jan. 29.31-32p2)
K13U03R 2013 UR3 (Q=5.097 AU, arc=4 opp, H=17.0 ~1.35 km) from ZTF (Jan. 25.48-52p2, 27.36p1, 27.48p1 & 27.52p1)
K13A52W 2013 AW52 (arc=5 opp, H=20.0 ~339m) from ATLAS Haleakala (Jan. 28.33-35p4)
K12BC4E 2012 BE124 (q=0.229 AU, Q=4.847 AU, arc=3 opp, H=19.4 ~446m) from CSS (Jan. 28.24-25p3), PS1 (Jan. 28.39-43p7), and ATLAS Haleakala (Jan. 28.44-46p4)
K11Y40B 2011 YB40 (Q=4.072 AU, arc=3 opp, H=19.2 ~490m) from Spacewatch 0.9m (Jan. 29.09-10p3)
K11F02Y 2011 FY2 (Q=4.098 AU, arc=5 opp, H=18.1 ~812m) from PS1 (Jan. 28.57-61p4)
K11A52O 2011 AO52 (Q=4.408 AU, arc=3 opp, H=18.2 ~776m) from PS1 (Jan. 29.23-27p4)
K10MB2U 2010 MU112 (i=48.0°, arc=5 opp, H=20.7 ~245m) from Spacewatch 1.8m (Jan. 29.11-14p3 at R=21.9-22.5)
K10C55H 2010 CH55 (arc=3 opp, H=19.6 ~407m) from MLS (Jan. 28.43-44p4)
K09B02H 2009 BH2 from PCTMO (Jan. 25.21-25p3)
K09B00B 2009 BB (q=0.368 AU, Q=4.455 AU, arc=3 opp, H=18.2 ~776m) from PS2 (Jan. 28.30-33p3)
K09A16H 2009 AH16 (arc=8 opp, H=17.6 ~1.02 km) from W.F. Cashwell via Slooh.com Canary Islands Obs. (Jan. 28.20-24p3) and CSS (Jan. 28.48-49p4)
K08Y32X 2008 YX32 (arc=6 opp, H=20.8 ~234m) from SATINO-1 (Jan. 27.09-10p2)
K08R26S 2008 RS26 (Q=4.794 AU, arc=3 opp, H=17.8 ~933m) from PS2 (Jan. 28.62-65p3)
K08O01X 2008 OX1 (arc=4 opp, H=21.5 ~170m) from MLS (Jan. 28.32-34p4)
K08A01G 2008 AG1 (arc=2 opp, H=21.1 ~204m) from MLS (Jan. 28.41-43p4 at G=21.5-22.1)
K06T01D 2006 TD1 (arc=3 opp, H=21.0 ~214m) from PS2 (Jan. 28.30-33p3 at w=21.7-22.1)
K06K86Y 2006 KY86 (arc=4 opp, H=19.8 ~371m) from ZTF (Jan. 27.16-20p4) and ATLAS Mauna Loa (Jan. 28.28-31p8)
K04RA9Y 2004 RY109 (arc=6 opp, H=19.0 ~537m) from PS1 (Jan. 28.39-42p3 at w=22.5-6)
K04M00D 2004 MD (arc=5 opp, H=20.1 ~323m) from ZTF (Jan. 27.30p2, 27.42-43p2 & 28.33-36p4), CSS (Jan. 28.31-32p4), and ATLAS Haleakala (Jan. 28.54-56p4)
K02E02Y 2002 EY2 (arc=5 opp, H=19.4 ~446m) from CSS (Jan. 28.28-30p4) and ATLAS Haleakala (Jan. 28.56-58p4)
J96A02E 1996 AE2 (i=37.4°, arc=4 opp, H=20.3 ~295m) from CSS (Jan. 28.28-30p4)
r9940 539940 2017 HW1 from CSS (Jan. 28.44-45p2)
q5364 525364 2005 CL7 from Zuben Obs. (Jan. 28.91-92p10)
p6986 516986 2012 QP10 from ZTF (Jan. 27.17-19p2)
p2245 512245 2016 AU8 from ATLAS Mauna Loa (Jan. 28.47-49p4)
p2244 512244 2015 YE18 from ATLAS Mauna Loa (Jan. 28.23-26p7)
p1684 511684 2015 BN509 from ZTF (Jan. 28.26-32p7)
p1523 511523 2014 QS439 from CSS (Jan. 28.26p1)
p1243 511243 2014 BS32 from ZTF (Jan. 27.28-33p8, 28.23p1 & 28.28-29p2)
o0094 500094 2012 BC20 from MLS (Jan. 28.36-38p3)
n7135 497135 2004 QD20 from MLS (Jan. 28.19-20p4) and PS1 (Jan. 29.24-27p4)
n2143 492143 2013 OE from ATLAS Mauna Loa (Jan. 28.25-27p4)
m8490 488490 2000 AF205 from PS2 (Jan. 28.41-44p4)
j9386 459386 2012 KJ11 from CSS (Jan. 28.28-30p4) and PS2 (Jan. 28.45-48p4)
j8732 458732 2011 MD5 from MLS (Jan. 28.19-21p4), ATLAS Mauna Loa (Jan. 28.31-33p4), and PS1 (Jan. 29.24-28p3)
j5322 455322 2002 NX18 from MASTER IAC Obs. (Jan. 28.07p2 & 28.13p1)
j2421 452421 2002 VX99 from MLS (Jan. 28.10-11p4)
i8818 448818 2011 UU20 from ATLAS Haleakala (Jan. 28.28p4)
h8452 438452 2007 AS12 from MASTER IAC Obs. (Jan. 28.06-10p5)
h7316 437316 2013 OS3 from ATLAS Mauna Loa (Jan. 28.32-34p4)
f6591 416591 2004 LC2 from CSS (Jan. 28.31-32p4), ZTF (Jan. 28.33-36p4), and ATLAS Haleakala (Jan. 28.54-56p4)
f6231 416231 2003 AJ73 from ZTF (Jan. 25.15p1, 25.19p1 & 26.20-22p2) and ATLAS Haleakala (Jan. 28.39-41p4)
d1275 391275 2006 SJ134 from ATLAS Mauna Loa (Jan. 28.27-29p4)
c6259 386259 2008 EJ1 from PS1 (Jan. 28.57-60p4)
c2503 382503 2001 RE8 from PS1 (Jan. 28.57-59p3)
b4188 374188 2005 AD3 from ZTF (Jan. 25.25p1, 25.31p1 & 26.31p2)
Y9928 349928 2009 WD106 from PS1 (Jan. 28.53-56p3)
Y8595 348595 2005 XE1 from ZTF (Jan. 25.32-36p2, 27.35p1 & 27.51p1)
Y3158 343158 2009 HC82 from PS2 (Jan. 28.61-64p4)
X8347 338347 2002 XG4 from ATLAS Mauna Loa (Jan. 28.28-30p4)
X7557 337557 2001 SF262 from PS2 (Jan. 28.52-55p3)
X3555 333555 2005 VY17 from ATLAS Haleakala (Jan. 28.28p4)
X1876 331876 2004 CL from ATLAS Haleakala (Jan. 28.29-31p3)
X1792 331792 2003 MT2 from ZTF (Jan. 26.24-28p9, 26.36p2, 27.23-30p19 & 28.29-31p2)
V7685 317685 2003 NO4 from MLS (Jan. 28.21-23p3 at G=21.0-22.1)
V0442 310442 2000 CH59 from ATLAS Mauna Loa (Jan. 28.33-35p4)
S5944 285944 2001 RZ11 from MLS (Jan. 28.37-38p4)
S5567 285567 2000 OM from MLS (Jan. 28.10-11p3)
S1365 281365 2008 CM116 from ATLAS Haleakala (Jan. 28.30-35p4)
Q7221 267221 2001 AD2 from PS2 (Jan. 28.30-38p6)
O9595 249595 1997 GH28 from PS1 (Jan. 28.61-64p3)
O8926 248926 2006 WZ2 from ATLAS Haleakala (Jan. 28.43-44p4) and Cancelada Obs. (Jan. 28.97-99p12)
O3298 243298 2008 EN82 from PS1 (Jan. 28.53-56p4)
O3025 243025 2006 UM216 from ATLAS Mauna Loa (Jan. 28.35-37p4)
N8063 238063 2003 EG from PS1 (Jan. 28.33-37p4)
L8863 218863 2006 WO127 from ATLAS Mauna Loa (Jan. 28.60-62p4)
L7430 217430 2005 SN25 from PS1 (Jan. 28.57-60p4)
K5378 205378 2001 BJ16 from ZTF (Jan. 25.13-20p10)
K3015 203015 1999 YF3 from ATLAS Mauna Loa (Jan. 28.45-46p3)
H7651 177651 2004 XM14 from PS2 (Jan. 28.29-33p4)
H5189 175189 2005 EC224 from MLS (Jan. 28.48-50p4)
G4400 164400 2005 GN59 from PS1 (Jan. 28.61-64p3)
G4217 164217 2004 PT42 from MLS (Jan. 28.30-32p4 at G=21.1-22.1)
G4211 164211 2004 JA27 from PS2 (Jan. 28.28-32p3)
G3250 163250 2002 GH1 from ATLAS Mauna Loa (Jan. 28.63-66p4)
G2080 162080 1998 DG16 from CSS (Jan. 28.35-36p4) and ATLAS Haleakala (Jan. 28.63-66p4)
G2038 162038 1996 DH from ATLAS Mauna Loa (Jan. 28.37-40p4)
F9928 159928 2005 CV69 from MLS (Jan. 28.54-55p4)
F3842 153842 2001 XT30 from PS2 (Jan. 29.23-26p3)
F3814 153814 2001 WN5 from PS2 (Jan. 28.28-32p4)
E3947 143947 2003 YQ117 from ATLAS Mauna Loa (Jan. 28.41-43p4)
E2555 142555 2002 TB58 from Campo dos Amarais Obs. (Jan. 28.16-18p3)
D8013 138013 2000 CN101 from MLS (Jan. 28.25-27p4) and ATLAS Mauna Loa (Jan. 28.41-43p4)
D7925 137925 2000 BJ19 from ATLAS Mauna Loa (Jan. 28.31-32p4)
D7199 137199 1999 KX4 from ATLAS Haleakala (Jan. 28.34-35p4) and PS2 (Jan. 29.34-37p7)
D7170 137170 1999 HF1 from ATLAS Mauna Loa (Jan. 28.62-64p3)
D7120 137120 1999 BJ8 from ATLAS Mauna Loa (Jan. 28.58-60p4)
D7099 137099 1998 YW3 from CSS (Jan. 28.39-41p3)
D7084 137084 1998 XS16 from ZTF (Jan. 27.10-14p3)
D7064 137064 1998 WP5 from CSS (Jan. 28.43-45p4)
D7052 137052 Tjelvar (1998 VO33) from PS2 (Jan. 28.28-32p4)
D6993 136993 1998 ST49 from CSS (Jan. 28.44-45p4) and ATLAS Haleakala (Jan. 28.65-67p4)
B1253 111253 2001 XU10 from CSS (Jan. 28.08-10p3) and ATLAS Haleakala (Jan. 28.24-26p4)
A6589 106589 2000 WN107 from ATLAS Mauna Loa (Jan. 28.25-27p4)
A6538 106538 2000 WK63 from MLS (Jan. 28.12-14p4), ATLAS Mauna Loa (Jan. 28.27-29p4), and PS2 (Jan. 29.23-26p3)
A3067 103067 1999 XA143 from Montelupo Obs. (Jan. 26.83p3), CSS (Jan. 28.22-24p4), PS1 (Jan. 28.39-42p4), and ATLAS Haleakala (Jan. 28.49-51p4)
99248 99248 2001 KY66 from PS2 (Jan. 28.35-39p3)
90367 90367 2003 LC5 from CSS (Jan. 28.54-55p4)
90075 90075 2002 VU94 from ATLAS Mauna Loa (Jan. 28.38-41p4)
89830 89830 2002 CE from ZTF (Jan. 27.49-53p4) and CSS (Jan. 28.44-45p4)
85953 85953 1999 FK21 from PS1 (Jan. 28.61-64p4)
68063 68063 2000 YJ66 from PS1 (Jan. 28.53-56p4)
65690 65690 1991 DG from ATLAS Mauna Loa (Jan. 28.48-50p4)
54686 54686 2001 DU8 from ATLAS Mauna Loa (Jan. 28.52-54p4) and PS1 (Jan. 28.53-56p4)
54401 54401 2000 LM from PS1 (Jan. 28.57-60p4)
53319 53319 1999 JM8 from ZTF (Jan. 28.28-33p4)
53110 53110 1999 AR7 from ZTF (Jan. 27.12-16p5), MLS (Jan. 28.10-11p4), and ATLAS Mauna Loa (Jan. 28.24-26p4)
52768 52768 1998 OR2 from ZTF (Jan. 26.28p3 & 26.34p2), Montelupo Obs. (Jan. 26.81-82p7), CSS (Jan. 28.24-26p4), and ATLAS Haleakala (Jan. 28.50-52p5)
36236 36236 1999 VV from MLS (Jan. 28.10-12p4) and ATLAS Mauna Loa (Jan. 28.25-27p4)
35107 35107 1991 VH from ATLAS Mauna Loa (Jan. 28.44-46p4)
34613 34613 2000 UR13 from Montelupo Obs. (Jan. 26.86-87p3), ZTF (Jan. 27.28-32p2 & 28.26-32p4), and MASTER IAC Obs. (Jan. 28.06-10p5)
18172 18172 2000 QL7 from CSS (Jan. 28.22-23p2) and ATLAS Haleakala (Jan. 28.42-44p4)
12923 12923 Zephyr (1999 GK4) from ZTF (Jan. 27.27p4 & 27.32p2)
11405 11405 1999 CV3 from MLS (Jan. 28.23-24p4) and ATLAS Mauna Loa (Jan. 28.32-35p6)
11066 11066 Sigurd (1992 CC1) from ATLAS Mauna Loa (Jan. 28.58-61p4)
09400 9400 1994 TW1 from Montelupo Obs. (Jan. 26.79p4), CSS (Jan. 28.08-10p4), and ATLAS Haleakala (Jan. 28.23-24p4)
08566 8566 1996 EN from ATLAS Mauna Loa (Jan. 28.48-51p4)
07358 7358 Oze (1995 YA3) from PS1 (Jan. 28.53-56p4)
06456 6456 Golombek (1992 OM) from ZTF (Jan. 25.21-25p4, 25.31p2, 26.24-25p4 & 26.31p2)
06455 6455 1992 HE from ATLAS Haleakala (Jan. 28.29-31p4)
06047 6047 1991 TB1 from ZTF (Jan. 24.12-16p4) and ATLAS Haleakala (Jan. 28.23-25p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (Jan. 28.62-64p4)
02329 2329 Orthos (1976 WA) from MLS (Jan. 28.37-38p4)
02059 2059 Baboquivari (1963 UA) from ZTF (Jan. 24.14p2, 24.18p1 & 27.12-16p2), MLS (Jan. 28.12-14p4), and ATLAS Mauna Loa (Jan. 28.26-28p4)
01866 1866 Sisyphus (1972 XA) from ATLAS Haleakala (Jan. 28.40-42p4)
01864 1864 Daedalus (1971 FA) from PS2 (Jan. 28.61-64p4)
01627 1627 Ivar (1929 SH) from ZTF (Jan. 27.28p1 & 27.33p1)
01620 1620 Geographos (1951 RA) from ZTF (Jan. 25.10-12p2)

MPEC 2020-B247 - "05:20 UT" - 2020 BF11

K20B11F 2020 BF11 (small asteroid, H=25.0 ~34m) was picked up at 1258 UT on 27 Jan. by PS1, observing it at Jan. 27.54-58p4. This detection was confirmed by PS2 (Jan. 24.41-44p4), GINOP-KHK (Jan. 27.94-95p2), Schwarzschild Obs. (Jan. 28.94p3), and Visnjan Obs. (Jan. 29.08-09p4).

MPEC 2020-B246 - "05:16 UT" - 2020 BE11

K20B11E 2020 BE11 (small asteroid, Earth MOID=1.0 LD, H=22.4 ~112m) was picked up at 0709 UT on 26 Jan. by PS1, observing it at Jan. 26.30-34p4. This detection was confirmed by MRO (Jan. 26.48-50p4 & 27.28-30p4), GINOP-KHK (Jan. 27.75-76p3), Schwarzschild Obs. (Jan. 28.86p3), Visnjan Obs. (Jan. 29.01p3), and Steward Mt. Lemmon Sta. (Jan. 29.11p3).

MPEC 2020-B245 - "05:14 UT" - 2020 BD11

K20B11D 2020 BD11 (H=24.1 ~51m, NHATS) was picked up at 1136 UT on 27 Jan. by PS1, observing it at Dec. 24.47-51p3 at G=23.2-7, 27.48-49p2 at G=22.6-7, Jan. 18.51-56p4 at G=22.0-23.1, and 27.48-51p3 at w=20.86-21.15. This detection was confirmed by GINOP-KHK (Jan. 28.03p2), Schwarzschild Obs. (Jan. 28.87p2), and Visnjan Obs. (Jan. 29.12-14p3).

MPEC 2020-B244 - "02:27 UT" - 2017 BN3

K17B03N 2017 BN3 (small asteroid, H=24.7 ~39m) from MLS (Jan. 28.30-32p4), Steward Mt. Lemmon Sta. (Jan. 28.40p4), and Schwarzschild Obs. (Jan. 29.02p3)

MPEC 2020-B243 - "02:22 UT" - 2017 DO34

K17D34O 2017 DO34 (small asteroid, H=23.6 ~65m) from PS2 (Jan. 28.56-60p3) and Schwarzschild Obs. (Jan. 29.01-02p3)

MPEC 2020-B242 - "02:10 UT" - 2020 BC11

K20B11C 2020 BC11 (small asteroid, H=23.1 ~81m) was picked up at 0745 UT on 28 Jan. by MLS, observing it at 2019 Sept. 7.36-37p4 at G=21.1-22.5 and Jan. 28.32-34p4 at G=20.7-21.4. This detection was confirmed by PS2 (2019 Sept. 17.44-47p3 at G=22.0-22.6, Jan. 18.49-53p4 at G=21.4-22.6 & 21.51-53p2 at G=20.8-21.0), Steward Mt. Lemmon Sta. (Jan. 28.44-45p4), and Schwarzschild Obs. (Jan. 29.03-04p3).

Observers on 29 January '20

A total of 30 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2020-B260 & 2020-B262 -- 2020 BY11, 2020 BS11
`T05`	ATLAS Haleakala in Hawaii, 25 in MPEC 2020-B248 -- 2020 BO1, 2019 XG1, 2015 OX78, 2013 AW52, 2012 BE124, 2004 MD, 2002 EY2, 52768, 448818, 416591, 416231, 333555, 331876, 281365, 248926, 18172, 162080, 137199, 136993, 111253, 103067, 9400, 6455, 6047, 1866
`T08`	ATLAS Mauna Loa in Hawaii, 37 in MPEC 2020-B248 -- 2020 AZ2, 2019 WB6, 2018 BP, 2015 XK351, 2013 UV10, 2006 KY86, 90075, 65690, 54686, 53110, 512245, 512244, 492143, 458732, 437316, 391275, 36236, 35107, 338347, 310442, 243025, 218863, 203015, 163250, 162038, 143947, 138013, 137925, 137170, 137120, 11405, 11066, 106589, 106538, 8566, 4055, 2059
`Z84`	Calar Alto Schmidt in Spain, 1 in MPEC 2020-B248 -- 2020 BD11
`X74`	Campo dos Amarais Obs., 1 in MPEC 2020-B248 -- 142555
`Z36`	Cancelada Obs., 2 in MPEC 2020-B248 -- 2015 DE200, 248926
`703`	Catalina Sky Survey (CSS) in Arizona, 26 in MPECs 2020-B248 & 2020-B253 -- 2020 BV1, 2020 BO1, 2020 BL11, 2019 XG1, 2019 WR2, 2015 OX78, 2012 BE124, 2009 AH16, 2004 MD, 2002 EY2, 1996 AE2, 90367, 89830, 539940, 52768, 511523, 459386, 416591, 18172, 162080, 137099, 137064, 136993, 111253, 103067, 9400
`K88`	GINOP-KHK in Hungary, 4 in MPECs 2020-B245, 2020-B246, 2020-B247 & 2020-B260 -- 2020 BS11, 2020 BF11, 2020 BE11, 2020 BD11
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2020-B246, 2020-B249, 2020-B250, 2020-B253 & 2020-B262 -- 2020 BY11, 2020 BL11, 2020 BH11, 2020 BG11, 2020 BE11
`Z22`	MASTER IAC Obs. in the Canary Islands, 3 in MPEC 2020-B248 -- 455322, 438452, 34613
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-B254 & 2020-B261 -- 2020 BM11, 2020 B1
`108`	Montelupo Obs. in Italy, 5 in MPEC 2020-B248 -- 2015 OX78, 52768, 34613, 103067, 9400
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 38 in MPECs 2020-B242, 2020-B244, 2020-B248, 2020-B249, 2020-B256, 2020-B257, 2020-B258, 2020-B259 & 2020-B262 -- 2020 BY11, 2020 BR11, 2020 BQ11, 2020 BP11, 2020 BO3, 2020 BO11, 2020 BN9, 2020 BJ9, 2020 BG6, 2020 BG11, 2020 BF4, 2020 BC11, 2019 YY5, 2019 YE2, 2019 NM1, 2017 BN3, 2016 CW31, 2015 XK351, 2010 CH55, 2008 OX1, 2008 AG1, 53110, 500094, 497135, 458732, 452421, 36236, 317685, 285944, 285567, 175189, 164217, 159928, 138013, 11405, 106538, 2329, 2059
`J69`	North Obs. in England, 1 in MPEC 2020-B248 -- 2013 BA74
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 43 in MPECs 2020-B245, 2020-B246, 2020-B247, 2020-B248, 2020-B249, 2020-B250, 2020-B251, 2020-B254, 2020-B257, 2020-B258, 2020-B260, 2020-B261 & 2020-B263 -- 2020 BZ11, 2020 BW, 2020 BS11, 2020 BQ11, 2020 BP11, 2020 BM11, 2020 BL5, 2020 BK3, 2020 BJ11, 2020 BH11, 2020 BG11, 2020 BF11, 2020 BE11, 2020 BE1, 2020 BD11, 2020 B1, 2020 AK, 2020 AG1, 2019 XG1, 2018 BA7, 2015 HB10, 2015 DY53, 2013 DU, 2012 BE124, 2011 FY2, 2011 AO52, 2004 RY109, 85953, 68063, 54686, 54401, 497135, 458732, 386259, 382503, 349928, 249595, 243298, 238063, 217430, 164400, 103067, 7358
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 34 in MPECs 2020-B242, 2020-B243, 2020-B247, 2020-B248, 2020-B250, 2020-B253, 2020-B254, 2020-B256, 2020-B257, 2020-B259 & 2020-B263 -- 2020 BZ11, 2020 BS2, 2020 BR11, 2020 BP11, 2020 BO11, 2020 BM11, 2020 BL11, 2020 BH11, 2020 BF11, 2020 BC11, 2019 XG, 2019 TZ4, 2018 BP, 2018 BN3, 2017 DO34, 2016 VQ5, 2013 UV10, 2009 BB, 2008 RS26, 2006 TD1, 99248, 488490, 459386, 343158, 337557, 267221, 177651, 164211, 153842, 153814, 137199, 137052, 106538, 1864
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 5 in MPEC 2020-B248 -- 2020 BX9, 2020 BS1, 2019 YG7, 2015 OX78, 2009 BH2
`C95`	SATINO-1 in France, 2 in MPECs 2020-B248 & 2020-B250 -- 2020 BH11, 2008 YX32
`033`	Schwarzschild Obs. in Germany, 8 in MPECs 2020-B242, 2020-B243, 2020-B244, 2020-B245, 2020-B246, 2020-B247, 2020-B250 & 2020-B260 -- 2020 BS11, 2020 BH11, 2020 BF11, 2020 BE11, 2020 BD11, 2020 BC11, 2017 DO34, 2017 BN3
`G40!`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-B248 -- 2020 BV
`G40'`	W.F. Cashwell in Nevada via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-B248 -- 2009 AH16
`587`	Sormano Obs. in Italy, 1 in MPEC 2020-B260 -- 2020 BS11
`691`	Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2020-B248 -- 2020 BT2, 2020 BS, 2020 BO3, 2019 XF1, 2019 WP3, 2019 MS3, 2015 BK509, 2011 YB40
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2020-B248 & 2020-B256 -- 2020 BO11, 2020 AY1, 2019 YL4, 2019 PE2, 2010 MU112
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 21 in MPECs 2020-B242, 2020-B244, 2020-B246, 2020-B248, 2020-B249, 2020-B250, 2020-B251, 2020-B253, 2020-B254, 2020-B257, 2020-B259, 2020-B260 & 2020-B262 -- 2020 BY6, 2020 BY11, 2020 BV, 2020 BS7, 2020 BS11, 2020 BR7, 2020 BR11, 2020 BP11, 2020 BO8, 2020 BO1, 2020 BN9, 2020 BM11, 2020 BL11, 2020 BJ11, 2020 BH11, 2020 BG6, 2020 BG11, 2020 BE9, 2020 BE11, 2020 BC11, 2017 BN3
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-B248 & 2020-B252 -- 2019 YV1, 2015 PZ228
`T14`	UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2020-B255 -- 2020 BN11
`L01`	Visnjan Obs., 6 in MPECs 2020-B245, 2020-B246, 2020-B247, 2020-B248, 2020-B250 & 2020-B260 -- 2020 BS11, 2020 BH11, 2020 BF11, 2020 BE11, 2020 BD11, 2017 DO34
`C51`	WISE in Earth polar orbit, 1 in MPEC 2020-B255 -- 2020 BN11
`Z57`	Zuben Obs., 2 in MPEC 2020-B248 -- 2015 DE200, 525364
`I41`	Zwicky Transient Facility (ZTF) in southern California, 31 in MPECs 2020-B248 & 2020-B250 -- 2020 BH11, 2019 YG7, 2019 XG1, 2019 TZ4, 2014 NF64, 2013 UR3, 2008 PG2, 2006 KY86, 2004 MD, 89830, 53319, 53110, 52768, 516986, 511684, 511243, 416591, 416231, 374188, 348595, 34613, 331792, 205378, 137084, 12923, 6456, 6047, 3200, 2059, 1627, 1620

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 29 January '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2020 BY11	JPL Sentry	2330	2118-2118	1	3.650e-08	-9.04	-9.04	0	JPL: Computed at 15:00 today Pacific time based on 21 observations spanning 2.9874 days (2020-Jan-26.41131 to 2020-Jan-29.39871). Diameter approximately 0.009 km. from weighted mean H=27.76.

2020 BN11	JPL Sentry	2100	2100-2100	1	1.302e-09	-7.36	-7.36	0	JPL: Computed at 11:22 today Pacific time based on 12 observations spanning 11.425 days (2020-Jan-17.945515 to 2020-Jan-29.370707). Diameter approximately 0.180 km. from weighted mean H=21.41.

2020 BC8	NEODyS	1600	R E M O V E D						-

2020 BK3	JPL Sentry	1730	2091-2113	12	0.00065019129	-4.30	-4.30	0	JPL: Computed at 09:08 today Pacific time based on 79 observations spanning 6.0347 days (2020-Jan-22.395303 to 2020-Jan-28.430029). Diameter approximately 0.014 km. from weighted mean H=26.90.
2020 BK3	NEODyS	1600	2091-2113	22	7.45e-04	-4.25	-4.25	0	NEODyS: "Based on 79 optical observations (of which 0 are rejected as outliers) from 2020-01-22.396 to 2020-01-28.431."

2020 AY1	JPL Sentry	1730	2103-2103	1	1.877e-07	-7.20	-7.20	0	JPL: Computed at 09:09 today Pacific time based on 116 observations spanning 24.060 days (2020-Jan-05.24158 to 2020-Jan-29.30183). Diameter approximately 0.031 km. from weighted mean H=25.16.
2020 AY1	NEODyS	1600	2103	1	5.24e-08	-7.76	-7.76	0	NEODyS: "Based on 117 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-01-29.303."

2019 YV1	JPL Sentry	1730	2101-2114	5	1.20313e-05	-5.41	-5.55	0	JPL: Computed at 09:09 today Pacific time based on 86 observations spanning 36.246 days (2019-Dec-21.11125 to 2020-Jan-26.35731). Diameter approximately 0.032 km. from weighted mean H=25.12.
2019 YV1	NEODyS	1600	2099-2115	10	7.03e-06	-5.66	-5.75	0	NEODyS: "Based on 86 optical observations (of which 0 are rejected as outliers) from 2019-12-21.112 to 2020-01-26.358."

2016 AZ193	JPL Sentry	1730	2020-2114	493	2.1924636e-06	-6.31	-7.22	0	JPL: Computed at 14:28 April 6th of 2017 Pacific time based on 9 observations spanning .15930 days (2016-Jan-03.25638 to 2016-Jan-03.41568). Diameter approximately 0.016 km. from weighted mean H=26.62.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 29 January '20

Times are UTC for when items were noted or added by The Tracking News.

2330	Noted that JPL Sentry has posted 2020 BY11 as an impact risk - see above
2301	Grabbed MPEC 2020-B263 - 2020 BZ11 - see above
2205	Grabbed MPEC 2020-B262 - 2020 BY11 - see above
2145	Generated Traffic Report
2100	Noted that JPL Sentry has posted 2020 BN11 as an impact risk - see above Grabbed MPEC 2020-B259 - 2020 BR11 - see above Grabbed MPEC 2020-B260 - 2020 BS11 - see above Grabbed MPEC 2020-B261 - A/2020 B1 - see above
1900	Grabbed MPEC 2020-B256 - 2020 BO11 - see above Grabbed MPEC 2020-B257 - 2020 BP11 - see above Grabbed MPEC 2020-B258 - 2020 BQ11 - see above
1835	Grabbed MPEC 2020-B253 - 2020 BL11 - see above Grabbed MPEC 2020-B254 - 2020 BM11 - see above Grabbed MPEC 2020-B255 - 2020 BN11 - see above
1730	Noted that JPL Sentry has updated its 2016 AZ193 risk assessment - see above Noted that JPL Sentry has updated its 2019 YV1 risk assessment - see above Noted that JPL Sentry has reposted 2020 AY1 as an impact risk - see above Noted that JPL Sentry has updated its 2020 BK3 risk assessment - see above
1600	Noted that NEODyS has updated its 2019 YV1 risk assessment - see above Noted that NEODyS has reposted 2020 AY1 as an impact risk - see above Noted that NEODyS has removed 2020 BC8 as an impact risk - see above Noted that NEODyS has updated its 2020 BK3 risk assessment - see above Grabbed MPEC 2020-B248 - Daily Orbit Update - see above Grabbed MPEC 2020-B249 - 2020 BG11 - see above Grabbed MPEC 2020-B250 - 2020 BH11 - see above Grabbed MPEC 2020-B251 - 2020 BJ11 - see above Grabbed MPEC 2020-B252 - 2015 PZ228 - see above
0614	Grabbed MPEC 2020-B245 - 2020 BD11 - see above Grabbed MPEC 2020-B246 - 2020 BE11 - see above Grabbed MPEC 2020-B247 - 2020 BF11 - see above
0455	Grabbed MPEC 2020-B242 - 2020 BC11 - see above Grabbed MPEC 2020-B243 - 2017 DO34 - see above Grabbed MPEC 2020-B244 - 2017 BN3 - see above

http://www.HohmannTransfer.com/mn/20/20029_0129.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2020 Columbine of Maine - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com>.