2020-01-18 Tracking News

Contents on 18 January '20

Traffic Report -- nine objects
IAU Minor Planet Center
- NEOCP Activity -- 49 listings
- New MPECs -- two MPECs
Observers -- 24 observers
Impact Risk Monitoring -- six objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1075 risk-listed objects, 64 have had news in the last 31 days. Updated at 2300 UTC on 18 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 18 January '20

Nine objects reported inside ten LD

Today there are nine objects reported inside ten lunar distances (LD) of Earth, all of them out beyond six LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 2.41, 5.0 & 10.0 LD boundaries
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
3.71 LD Jan. 10	2019 YF4	13 m	6.10 to 6.61 LD	Dec. 27 - Jan. 25	NHATS target - DOU
3.82 LD Jan. 12	2020 AB2	14 m	9.79 to 11.46 LD	Jan. 7 - 18	NHATS target, exits ten LD

6.05 LD yesterday	2020 AL3	20 m	6.60 to 8.14 LD	Jan. 14 - 19	DOU
6.5 LD Jan. 13*	2020 AE1	11 m	7.7 to 8.3 LD	Jan. 5 - 21	EPU +/- 1.28 hours*, NHATS target
6.85 LD Jan. 16	2019 YD3	21 m	7.13 to 7.50 LD	Jan. 9 - 22	NHATS target
7.43 LD tomorrow	2020 AM3	35 m	7.51 from 8.95 LD	yesterday - Jan. 20	DOU
7.92 LD yesterday	2020 AN3	288 m	8.71 to 10.90 LD	Jan. 15 - 18	exits ten LD, risk - DOU
8.23 LD Jan. 16	2020 AZ1	16 m	8.42 to 8.64 LD	Jan. 9 - 22	NHATS target - DOU
9.08 LD yesterday	2020 AD1	19 m	9.09 to 9.15 LD	Jan. 13 - 22	NHATS target - DOU
* EPU = Earth passage uncertainty

Approaching
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
8.29 LD Jan. 25	2020 AK3	21 m	12.89 from 14.14 LD	Jan. 21 - 28	NHATS target - DOU

This report was generated at 1945 UTC with follow-up in today's DOU MPEC for approaching 2020 AK3, inbound 2020 AM3, five outbound objects: 2020 AL3, 2020 AZ1, 2020 AD1, 2019 YF4, and risk-listed 2020 AN3, departed objects 2020 AH3 and risk-listed 2020 AY1, and distant 2016 BC14.

See also our new "Earth's Busy Neighborhood" page for more info and quicker discovery reporting.

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. "Distant" is used here to describe an object under observation that has approached Earth within ten LD since A/CC began these traffic reports almost thirteen years ago but is not currently coming so close. 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 18 January '20

The MPC's NEO Confirmation Page has 49 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 49 objects listed. Of these, 32 were "one nighters." So far The Tracking News has counted a total of 61 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 18 January '20

Minor Planet Electronic Circulars

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

MPEC 2020-B05 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2020-B06 time-stamped "15:00 UT" - 2015 BK509

MPEC 2020-B06 - "15:00 UT" - 2015 BK509

K15Bo9K 2015 BK509 (small asteroid, Earth MOID=3.2 LD, H=22.3 ~117m) from ESA Optical Ground Station (ESA OGS) (Jan. 17.03-08p3 & 18.11-14p3)

<< DOU on 18 January '20 >> MPEC 2020-B05 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K20A03N 2020 AN3 (close passer) from Great Shefford Obs. (Jan. 17.74-76p5) and ESA OGS (Jan. 17.87p3)
K20A01Y 2020 AY1 (small asteroid, arc=12 days, H=25.1 ~32m, close passer, NHATS target) from KLENOT (Jan. 16.92p6)
Observations of close-passing objects
K20A03M 2020 AM3 (arc=16 days, H=25.0 ~34m) from North Obs. (Jan. 17.85-88p2) and Great Shefford Obs. (Jan. 17.92p4)
K20A03L 2020 AL3 (arc=4 days, H=26.2 ~19m) from Great Shefford Obs. (Jan. 17.88-91p4) and Steward Obs. Mt. Lemmon Station (Jan. 18.08p2)
K20A03K 2020 AK3 (arc=4 days, H=26.0 ~21m, NHATS target) from ESA OGS (Jan. 17.96p2), Great Shefford Obs. (Jan. 17.96-97p3), and Steward Mt. Lemmon Sta. (Jan. 18.19p3)
K20A03H 2020 AH3 (arc=4 days, H=24.3 ~47m) from Great Shefford Obs. (Jan. 17.93-95p2)
K20A01Z 2020 AZ1 (arc=13 days, H=26.6 ~16m, NHATS target) from Mt. John Obs. (Jan. 17.51-52p4)
K20A01D 2020 AD1 (arc=21 days, H=26.3 ~19m, NHATS target) from Great Shefford Obs. (Jan. 18.07-08p4)
K19Y04F 2019 YF4 (arc=20 days, H=27.0 ~13m, NHATS target) from the Spacewatch 1.8m telescope (Jan. 17.52p3) and the Spacewatch 0.9m telescope (Jan. 18.41-43p3)
K16B14C 2016 BC14 (arc=3 opp, H=20.9 ~224m, NHATS target) from Steward Mt. Lemmon Sta. (Jan. 18.09-10p2)
Observation campaigns (NHATS targets, radar support)
K20A03O 2020 AO3 (arc=4 days, H=24.6 ~41m, NHATS) from Steward Mt. Lemmon Sta. (Jan. 18.29p4)
K20A01S 2020 AS1 (arc=13 days, H=26.7 ~15m, NHATS) from Spacewatch 1.8m (Jan. 17.53p3)
K20A00U 2020 AU (arc=18 days, H=25.7 ~25m, NHATS) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Jan. 18.36-37p4 at G=21.4-22.9)
K19Y05Q 2019 YQ5 (arc=18 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Jan. 18.13-14p4)
K19Y05A 2019 YA5 (arc=19 days, H=26.0 ~21m, NHATS) from Great Shefford Obs. (Jan. 18.09-13p3)
K19Y04L 2019 YL4 (arc=21 days, H=24.4 ~45m, NHATS) from Steward Mt. Lemmon Sta. (Jan. 18.39-41p3)
K19W04O 2019 WO4 (arc=77 days, H=23.5 ~68m, NHATS) from Spacewatch 1.8m (Jan. 18.18-19p3 at R=22.1-2)
K19S02F 2019 SF2 (arc=2 opp, H=23.3 ~74m, NHATS) from Astronomical Research Obs. Westfield (Jan. 17.04-05p2 at V=22.0-22.3)
K11UT2C 2011 UC292 (arc=2 opp, H=22.8 ~93m, NHATS) from Spacewatch 0.9m (Jan. 18.31-32p3)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20A03J 2020 AJ3 (Q=4.034 AU, arc=4 days, H=25.8 ~23m) from ESA OGS (Jan. 17.96-97p3) and Steward Mt. Lemmon Sta. (Jan. 18.27-28p4)
K20A02Q 2020 AQ2 (arc=12 days, H=25.8 ~23m) from CSS-Kuiper (Jan. 18.41-43p3)
K20A01W 2020 AW1 (arc=14 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (Jan. 18.30-31p4)
K20A01Q 2020 AQ1 (arc=15 days, H=22.2 ~123m) from Lumezzane Obs. (Jan. 17.01-02p4), Muensterschwarzach Obs. (Jan. 17.22-23p4), Great Shefford Obs. (Jan. 18.02-03p4), and Steward Mt. Lemmon Sta. (Jan. 18.37p4)
K20A01H 2020 AH1 (arc=20 days, H=24.5 ~43m) from Great Shefford Obs. (Jan. 18.14-15p4)
K20A01G 2020 AG1 (arc=29 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (Jan. 18.33-34p4)
K20A00M 2020 AM (arc=19 days, H=24.7 ~39m) from CSS-Kuiper (Jan. 18.28-29p3 at G=21.8-22.4)
K20A00L 2020 AL (arc=19 days, H=24.6 ~41m) from CSS-Kuiper (Jan. 18.22-24p3 at G=22.0-22.3)
K19Y05D 2019 YD5 (arc=21 days, H=25.9 ~22m) from Steward Mt. Lemmon Sta. (Jan. 18.19p4)
K19Y04P 2019 YP4 (arc=21 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Jan. 18.34-35p4)
K19Y04E 2019 YE4 (arc=21 days, H=22.6 ~102m) from Steward Mt. Lemmon Sta. (Jan. 18.29-30p4)
K19Y03W 2019 YW3 (arc=24 days, H=22.8 ~93m) from Mt. John Obs. (Jan. 17.58-60p3)
K19Y03U 2019 YU3 (arc=22 days, H=22.5 ~107m) from Steward Mt. Lemmon Sta. (Jan. 18.24p3 at G=21.3-22.4)
K19Y03M 2019 YM3 (arc=22 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (Jan. 18.30p3)
K19Y02M 2019 YM2 (arc=29 days, H=22.6 ~102m) from Pan-STARRS 2 (PS2) (Jan. 17.55-58p3) and Steward Mt. Lemmon Sta. (Jan. 18.35-37p4)
K19Y02E 2019 YE2 (arc=29 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (Jan. 18.48p4)
K19X01C 2019 XC1 (arc=45 days, H=22.4 ~112m) from Mt. John Obs. (Jan. 17.55-56p4)
K19W05E 2019 WE5 (arc=50 days, H=23.1 ~81m) from Mt. John Obs. (Jan. 17.56-57p3)
K19S00U 2019 SU (arc=122 days, H=22.8 ~93m) from Spacewatch 1.8m (Jan. 18.33-35p4)
K04B58T 2004 BT58 (arc=3 opp, H=22.1 ~129m) from Lumezzane Obs. (Jan. 16.99p4)
K19Y05C 2019 YC5 (Q=4.036 AU, arc=21 days, H=22.0 ~135m) from Steward Mt. Lemmon Sta. (Jan. 18.31-33p4)
K19Y04O 2019 YO4 (i=45.5°, arc=21 days, H=21.9 ~141m) from ARO Westfield (Jan. 17.00-02p4 at V=22.1-4) and CSS-Kuiper (Jan. 18.24-26p3 at G=22.6-8)
K19W00X 2019 WX (arc=61 days, H=22.0 ~135m) from ARO Westfield (Jan. 17.04-05p2 at V=22.3)
Observations of other objects
K20A03Q 2020 AQ3 from Great Shefford Obs. (Jan. 18.04-06p4)
K20A03D 2020 AD3 (arc=10 days, H=21.6 ~162m) from Lumezzane Obs. (Jan. 17.00-01p3)
K20A02Z 2020 AZ2 (arc=12 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (Jan. 18.34-35p4)
K20A02V 2020 AV2 (IEO, Q=0.654 AU, arc=14 days, H=16.4 ~1.78 km) from ESA OGS (Jan. 17.82p2)
K19Y06R 2019 YR6 (arc=21 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (Jan. 18.28-29p4 at G=21.6-22.9)
K19Y05Y 2019 YY5 (arc=18 days, H=20.6 ~257m) from Mt. John Obs. (Jan. 17.61-62p3)
K19Y04S 2019 YS4 (arc=22 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (Jan. 18.24-25p4)
K19Y04K 2019 YK4 (arc=20 days, H=20.4 ~282m) from Lumezzane Obs. (Jan. 16.93p2), ARO Westfield (Jan. 17.11-12p4), and Steward Mt. Lemmon Sta. (Jan. 18.31-33p4)
K19Y04J 2019 YJ4 (Q=4.418 AU, arc=24 days, H=19.6 ~407m) from Mt. John Obs. (Jan. 17.64p4)
K19Y04H 2019 YH4 (i=42.8°, arc=39 days, H=20.0 ~339m) from Steward Mt. Lemmon Sta. (Jan. 18.42p3 & 18.48p1)
K19Y03V 2019 YV3 (arc=21 days, H=20.9 ~224m) from ARO Westfield (Jan. 17.09-10p3) and Steward Mt. Lemmon Sta. (Jan. 18.08-09p4)
K19X03A 2019 XA3 (Q=4.507 AU, arc=43 days, H=19.0 ~537m) from Steward Mt. Lemmon Sta. (Jan. 18.13p4)
K19X02Y 2019 XY2 (Q=5.140 AU, arc=43 days, H=21.1 ~204m) from Spacewatch 0.9m (Jan. 18.26-27p2)
K19X02W 2019 XW2 (arc=42 days, H=19.7 ~389m) from Steward Mt. Lemmon Sta. (Jan. 18.42p3)
K19X02O 2019 XO2 (arc=43 days, H=21.2 ~195m) from ESA OGS (Jan. 17.88-90p3)
K19W06R 2019 WR6 (arc=50 days, H=21.5 ~170m) from Spacewatch 0.9m (Jan. 18.24-25p3)
K19W04X 2019 WX4 (arc=51 days, H=21.0 ~214m) from Spacewatch 1.8m (Jan. 18.08-09p2 at R=22.8-23.0)
K19W04G 2019 WG4 (arc=58 days, H=20.4 ~282m) from Spacewatch 0.9m (Jan. 18.12-13p2)
K19W03F 2019 WF3 (arc=54 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (Jan. 18.08-09p4)
K19W01H 2019 WH1 (Q=5.124 AU, arc=60 days, H=21.5 ~170m) from Spacewatch 1.8m (Jan. 18.21-23p3 at R=22.8)
K19V05P 2019 VP5 (i=39.5°, arc=68 days, H=19.9 ~355m) from Spacewatch 1.8m (Jan. 18.11p2)
K19V01E 2019 VE1 (Q=4.380 AU, arc=78 days, H=19.0 ~537m) from Steward Mt. Lemmon Sta. (Jan. 18.15-16p4 at G=21.2-22.1)
K19U12S 2019 US12 (arc=3 opp, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (Jan. 18.15-16p4)
K19U11B 2019 UB11 (Q=4.595 AU, arc=163 days, H=20.6 ~257m) from ARO Westfield (Jan. 17.11-12p3)
K19U09O 2019 UO9 (arc=105 days, H=19.8 ~371m) from Spacewatch 0.9m (Jan. 18.08-10p3)
K19T07H 2019 TH7 (arc=101 days, H=20.9 ~224m) from Mt. John Obs. (Jan. 17.63p3)
K19O05A 2019 OA5 (Q=4.233 AU, arc=176 days, H=18.9 ~562m) from Spacewatch 0.9m (Jan. 18.15-16p2) and Steward Mt. Lemmon Sta. (Jan. 18.17p3)
K19N01M 2019 NM1 (arc=2 opp, H=20.9 ~224m) from CSS-Kuiper (Jan. 18.40-41p4 at G=22.1-23.0)
K19M03S 2019 MS3 (Q=4.526 AU, arc=2 opp, H=20.3 ~295m) from Spacewatch 0.9m (Jan. 18.29-30p3) and Steward Mt. Lemmon Sta. (Jan. 18.42-43p3)
K19B05J 2019 BJ5 (Q=5.009 AU, arc=222 days, H=18.1 ~812m) from Pan-STARRS 1 (PS1) (2019 Jan. 23.67-68p2, 2019 June 3.52-55p3 & 2019 June 29.47-50p4)
K17T04O 2017 TO4 (Q=5.100 AU, arc=159 days, H=18.2 ~776m) from PS1 (2018 Feb. 18.45-46p2 & 2018 March 19.25-28p4)
K17S14N 2017 SN14 (arc=3 opp, H=18.8 ~589m) from Steward Mt. Lemmon Sta. (Jan. 18.14-15p4 at G=21.6-22.5)
K17D37Q 2017 DQ37 (arc=2 opp, H=19.0 ~537m) from CSS-Kuiper (Jan. 18.45-46p4 at G=22.1-7)
K17B31P 2017 BP31 (arc=3 opp, H=19.8 ~371m) from Spacewatch 0.9m (Jan. 18.39-40p3)
K16W08J 2016 WJ8 (Q=4.444 AU, arc=67 days, H=18.1 ~812m) from PS1 (2016 Dec. 25.21-25p4)
K16EF7Z 2016 EZ157 (Q=4.289 AU, arc=3 opp, H=18.4 ~708m) from PS1 (2012 Nov. 1.42-44p2 at G=21.4-9, 2016 Jan. 11.57-61p2 at G=22.3-8, 2016 Jan. 12.53-57p3 at G=21.6-22.3, 2016 Jan. 17.52-56p4 at G=21.3-22.2, 2016 Feb. 12.45-49p4 at G=20.9-21.4, 2016 March 31.30-33p4 at G=20.5-21.3 & 2016 April 11.27-29p3 at G=20.7-21.1)
K15Xb7W 2015 XW377 (Q=4.019 AU, arc=2 opp, H=21.3 ~186m) from ESA OGS (Jan. 16.89-90p2)
K15O78X 2015 OX78 (i=40.4°, arc=3 opp, H=20.0 ~339m) from North Obs. (Jan. 17.90-92p5)
K15M96T 2015 MT96 (arc=3 opp, H=18.8 ~589m) from Spacewatch 1.8m (Jan. 18.36-38p3 at R=22.3)
K15HB6U 2015 HU116 (arc=3 opp, H=19.9 ~355m) from SATINO-1 (Jan. 1.91-92p4)
K14N64F 2014 NF64 (Q=4.904 AU, arc=5 opp, H=18.2 ~776m) from JAXA Space Tracking & Communications Center (JAXA STCC) (Jan. 18.40-43p3)
K13P02V 2013 PV2 (arc=3 opp, H=20.0 ~339m) from Castelmartini Obs. (Jan. 9.85-86p3)
K13A52W 2013 AW52 (arc=5 opp, H=20.0 ~339m) from Lumezzane Obs. (Jan. 16.90p3)
K12BC4D 2012 BD124 (arc=4 opp, H=19.2 ~490m) from Lumezzane Obs. (Jan. 16.84-85p4)
K12B61U 2012 BU61 (Q=4.490 AU, arc=3 opp, H=21.5 ~170m) from Lumezzane Obs. (Jan. 16.74-75p2)
K11Y40B 2011 YB40 (Q=4.072 AU, arc=3 opp, H=19.2 ~490m) from Spacewatch 0.9m (Jan. 18.11-13p3)
K09N00H 2009 NH from CSS-Kuiper (Jan. 18.31-34p4 at G=21.6-22.6)
K06X02F 2006 XF2 (arc=2 opp, H=19.9 ~355m) from WISE (Jan. 16.33p1, 16.46p2, 16.59p1, 16.72p1, 16.85p1, 16.98p1, 17.11p1 & 17.24p1)
m3878 483878 2005 YS165 from WISE (Jan. 15.35p1, 15.74p2, 16.07p1, 16.13p1 & 16.79p1)
g7778 427778 2005 BE from the Zwicky Transient Facility (ZTF) (Jan. 15.37-39p3) and Lumezzane Obs. (Jan. 16.94-95p4)
f6231 416231 2003 AJ73 from Lumezzane Obs. (Jan. 16.86-87p3)
f6002 416002 2002 BN from Lumezzane Obs. (Jan. 16.95p1)
Y9063 349063 2006 XA from ATLAS Haleakala (Jan. 17.53-55p4)
V0442 310442 2000 CH59 from Lumezzane Obs. (Jan. 16.88-89p4)
O8926 248926 2006 WZ2 from Muensterschwarzach Obs. (Jan. 17.22p3)
G3373 163373 2002 PZ39 from Lumezzane Obs. (Jan. 17.02-03p4)
G2825 162825 2001 BO61 from ATLAS Haleakala (Jan. 17.52-54p3)
F9504 159504 2000 WO67 from Oukaimeden Obs. (Jan. 4.98-01p4)
F3842 153842 2001 XT30 from WISE (Jan. 14.99p1, 15.58p1, 15.71p2, 15.84p1, 15.98p1, 16.04p1, 16.11p1, 16.24p1, 16.37p1, 16.63p1 & 16.76p1)
E1052 141052 2001 XR1 from Castelmartini Obs. (Jan. 9.91-92p2)
D7199 137199 1999 KX4 from Wickede Obs. (Jan. 16.82-83p8)
A6589 106589 2000 WN107 from MASTER IAC Obs. (Jan. 15.89-90p2)
A3067 103067 1999 XA143 from Oukaimeden Obs. (Jan. 2.11-13p4)
96744 96744 1999 OW3 from WISE (Jan. 13.87p1)
86326 86326 1999 WK13 from Castelmartini Obs. (Jan. 9.84-85p3)
85628 85628 1998 KV2 from WISE (Jan. 16.79p1, 16.92p1, 17.05p1, 17.18p1 & 17.31p1)
34613 34613 2000 UR13 from Castelmartini Obs. (Jan. 9.96p2)
18172 18172 2000 QL7 from Wishing Star Obs. (Jan. 18.01p3)
09400 9400 1994 TW1 from Wishing Star Obs. (Jan. 17.96p3)
05626 5626 1991 FE from Castelmartini Obs. (Jan. 10.01p3)
01864 1864 Daedalus (1971 FA) from Oukaimeden Obs. (Jan. 5.21-24p4)
01620 1620 Geographos (1951 RA) from Wishing Star Obs. (Jan. 17.98p3)

Observers on 18 January '20

A total of 24 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2020-B05 -- 2019 YV3, 2019 YO4, 2019 YK4, 2019 WX, 2019 UB11, 2019 SF2
`T05`	ATLAS Haleakala in Hawaii, 2 in MPEC 2020-B05 -- 349063, 162825
`160`	Castelmartini Obs. in Italy, 5 in MPEC 2020-B05 -- 2013 PV2, 86326, 34613, 141052, 5626
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPEC 2020-B05 -- 2020 AU, 2020 AQ2, 2020 AM, 2020 AL, 2019 YO4, 2019 NM1, 2017 DQ37, 2009 NH
`J04`	ESA Optical Ground Station (ESA OGS) in the Canary Islands, 7 in MPECs 2020-B05 & 2020-B06 -- 2020 AV2, 2020 AN3, 2020 AK3, 2020 AJ3, 2019 XO2, 2015 XW377, 2015 BK509
`J95`	Great Shefford Obs. in England, 10 in MPEC 2020-B05 -- 2020 AQ3, 2020 AQ1, 2020 AN3, 2020 AM3, 2020 AL3, 2020 AK3, 2020 AH3, 2020 AH1, 2020 AD1, 2019 YA5
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-B05 -- 2014 NF64
`246`	KLENOT in the Czech Republic, 1 in MPEC 2020-B05 -- 2020 AY1
`130`	Lumezzane Obs. in Italy, 12 in MPEC 2020-B05 -- 2020 AQ1, 2020 AD3, 2019 YK4, 2013 AW52, 2012 BU61, 2012 BD124, 2004 BT58, 427778, 416231, 416002, 310442, 163373
`Z22`	MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-B05 -- 106589
`474`	Mt. John Obs. in New Zealand, 7 in MPEC 2020-B05 -- 2020 AZ1, 2019 YY5, 2019 YW3, 2019 YJ4, 2019 XC1, 2019 WE5, 2019 TH7
`K74`	Muensterschwarzach Obs. in Germany, 2 in MPEC 2020-B05 -- 2020 AQ1, 248926
`J69`	North Obs. in England, 2 in MPEC 2020-B05 -- 2020 AM3, 2015 OX78
`J43`	Oukaimeden Obs. in Morocco, 3 in MPEC 2020-B05 -- 159504, 103067, 1864
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2020-B05 -- 2019 BJ5, 2017 TO4, 2016 WJ8, 2016 EZ157
`F52`	Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-B05 -- 2019 YM2
`C95`	SATINO-1 in France, 1 in MPEC 2020-B05 -- 2015 HU116
`691`	Spacewatch 0.9m telescope in Arizona, 10 in MPEC 2020-B05 -- 2019 YF4, 2019 XY2, 2019 WR6, 2019 WG4, 2019 UO9, 2019 OA5, 2019 MS3, 2017 BP31, 2011 YB40, 2011 UC292
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2020-B05 -- 2020 AS1, 2019 YF4, 2019 WX4, 2019 WO4, 2019 WH1, 2019 VP5, 2019 SU, 2015 MT96
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 32 in MPEC 2020-B05 -- 2020 AZ2, 2020 AW1, 2020 AQ1, 2020 AO3, 2020 AL3, 2020 AK3, 2020 AJ3, 2020 AG1, 2019 YV3, 2019 YU3, 2019 YS4, 2019 YR6, 2019 YQ5, 2019 YP4, 2019 YM3, 2019 YM2, 2019 YL4, 2019 YK4, 2019 YH4, 2019 YE4, 2019 YE2, 2019 YD5, 2019 YC5, 2019 XW2, 2019 XA3, 2019 WF3, 2019 VE1, 2019 US12, 2019 OA5, 2019 MS3, 2017 SN14, 2016 BC14
`G33`	Wickede Obs. in Germany, 1 in MPEC 2020-B05 -- 137199
`C51`	WISE in Earth polar orbit, 5 in MPEC 2020-B05 -- 2006 XF2, 96744, 85628, 483878, 153842
`I15`	Wishing Star Obs. in Rhode Island, 3 in MPEC 2020-B05 -- 18172, 9400, 1620
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-B05 -- 427778

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

Impact Risk Monitoring on 18 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 AN3	NEODyS	2300	2106	1	2.33e-06	-3.50	-3.5	0	NEODyS: "Based on 136 optical observations (of which 3 are rejected as outliers) from 2019-11-09.148 to 2020-01-17.873."
2020 AN3	JPL Sentry	1645	2106-2106	1	8.826e-07	-3.90	-3.90	0	JPL: Computed at 05:47 today Pacific time based on 127 observations spanning 69.725 days (2019-Nov-09.147003 to 2020-Jan-17.872451). Diameter approximately 0.290 km. from weighted mean H=20.35.

2020 AY1	NEODyS	2300	2103	1	9.23e-08	-7.49	-7.49	0	NEODyS: "Based on 100 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-01-16.964."

2019 YP3	NEODyS	2300	2111	1	1.21e-07	-7.67	-7.67	0	NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2019-12-27.534 to 2020-01-17.328."

2019 YW2	NEODyS	2300	2113-2115	2	3.73e-08	-7.24	-7.3	0	NEODyS: "Based on 126 optical observations (of which 4 are rejected as outliers) from 2019-12-24.514 to 2020-01-17.300."

2019 WG2	NEODyS	2300	2093-2118	80	3.1e-05	-4.66	-5.0	0	NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2019-11-24.496 to 2020-01-16.105."

2019 UN8	NEODyS	2300	2093-2114	10	6.23e-07	-8.48	-8.99	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2019-10-25.250 to 2019-10-29.505."

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 18 January '20

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

2300	Noted that NEODyS has updated its 2019 UN8 risk assessment - see above Noted that NEODyS has updated its 2019 WG2 risk assessment - see above Noted that NEODyS has updated its 2019 YP3 risk assessment - see above Noted that NEODyS has updated its 2019 YW2 risk assessment - see above Noted that NEODyS has updated its 2020 AN3 risk assessment - see above Noted that NEODyS has updated its 2020 AY1 risk assessment - see above
1945	Generated Traffic Report
1645	Noted that JPL Sentry has updated its 2020 AN3 risk assessment - see above Grabbed MPEC 2020-B05 - Daily Orbit Update - see above Grabbed MPEC 2020-B06 - 2015 BK509 - see above

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