2020-04-29 Tracking News

Contents on 29 April '20

IAU Minor Planet Center
- NEOCP Activity -- 116 listings
- New MPECs -- thirteen MPECs
Observers -- 31 observers
Impact Risk Monitoring -- nine objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1131 risk-listed objects, 49 have had news in the last 31 days. Updated at 2001 UTC on 29 April.
Earth's Busy Neighborhood traffic page
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.

NEOCP Activity on 29 April '20

The MPC's NEO Confirmation Page has 116 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 116 objects listed. Of these, 75 were "one nighters." So far The Tracking News has counted a total of 132 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 April '20

Minor Planet Electronic Circulars

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

MPEC 2020-H222 time-stamped "00:36 UT" - 2020 HN8 - see below
MPEC 2020-H223 time-stamped "11:43 UT" - 2020 HO8 - see below
MPEC 2020-H224 time-stamped "11:44 UT" - 2020 HP8 - see below
MPEC 2020-H225 time-stamped "11:46 UT" - 2020 HQ8 - see below
MPEC 2020-H226 time-stamped "11:47 UT" - 2020 HR8 - see below
MPEC 2020-H227 time-stamped "11:49 UT" - 2020 HS8 - see below
MPEC 2020-H228 time-stamped "11:50 UT" - 2020 HT8 - see below
MPEC 2020-H229 time-stamped "12:14 UT" - Daily Orbit Update - see below
MPEC 2020-H230 time-stamped "12:55 UT" - 2020 HV8 - see below
MPEC 2020-H231 time-stamped "18:55 UT" - 2020 HY8 - see below
MPEC 2020-H232 time-stamped "19:13 UT" - 2006 GV2 - see below
MPEC 2020-H233 time-stamped "19:14 UT" - 2017 GT6 - see below
MPEC 2020-H234 time-stamped "22:36 UT" - 2020 HA9

MPEC 2020-H234 - "22:36 UT" - 2020 HA9

K20H09A 2020 HA9 (small asteroid, H=25.2 ~31m) was picked up at 0953 UT on 27 April by Pan-STARRS 1 (PS1), observing it at April 27.41-44p4 at w=21.88-22.12, 28.38-41p3 at w=21.91-22.18, and 29.43-46p5 at G=21.4-22.0. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (April 29.33-34p3).

MPEC 2020-H233 - "19:14 UT" - 2017 GT6

K17G06T 2017 GT6 (small asteroid, H=22.7 ~98m) from PS1 (April 18.46-48p2 at G=20.2-21.1 & 19.41p1 at G=22.1), the Mt. Lemmon Survey (MLS) (April 29.22-23p4), and Steward Obs. Mt. Lemmon Station (April 29.32-33p4)

MPEC 2020-H232 - "19:13 UT" - 2006 GV2

K06G02V 2006 GV2 (q=0.335 AU, H=19.6 ~407m) from PS1 (2015 Jan. 24.23-27p4 at G=20.8-21.8, 2015 Feb. 12.23-26p3 at G=20.6-9, 2015 Feb. 13.23-27p4 at G=20.7-21.2, 2017 March 21.35-36p2 at G=22.2-6, 2017 Dec. 28.53-54p2 at G=21.7-9 & 2018 Jan. 12.46-50p4 at G=20.9-21.6), MLS (April 29.24-25p3), and Steward Mt. Lemmon Sta. (April 29.35p4)

MPEC 2020-H231 - "18:55 UT" - 2020 HY8

K20H08Y 2020 HY8 (risk listed, Q=4.489 AU, Earth MOID=9.6 LD, H=22.8 ~93m) was picked up at 0917 UT on 27 April by MLS, observing it at April 27.39-40p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 27.44p4, 28.27p3 & 29.26-27p4), KLENOT (April 27.96p3), Visnjan Obs. (April 28.00-01p3), and Mt. John Obs. (April 28.69-70p4 & 29.58p3).

MPEC 2020-H230 - "12:55 UT" - 2020 HV8

K20H08V 2020 HV8 (Earth MOID=2.1 LD, H=27.9 ~9m) was picked up at 0807 UT on 28 April by MLS, observing it at April 28.34-35p4 at G=21.5-22.0 and 29.35p4 at G=21.7-22.1. This detection was confirmed by CSS-Kuiper (April 28.40-42p3 at G=21.2-6 & 29.43-44p4 at G=21.7-22.6).

<< DOU on 29 April '20 >> MPEC 2020-H229 - "12:14 UT" - Daily Orbit Update

Observations of risk-listed objects
K20H07M 2020 HM7 (small asteroid, arc=4 days, H=25.9 ~22m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (April 29.25p3)
K20H07E 2020 HE7 (small asteroid, arc=3 days, H=28.8 ~6m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (April 29.18-19p4)
K20H06Q 2020 HQ6 (small asteroid, Q=4.265 AU, arc=8 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (April 29.42-43p3)
K20H06M 2020 HM6 (small asteroid, arc=4 days, H=26.6 ~16m, close passer) from PS1 (April 28.43-46p4)
K20H04Q 2020 HQ4 (small asteroid, arc=7 days, H=26.8 ~15m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (April 29.24p4)
K20H04J 2020 HJ4 (arc=13 days, H=20.0 ~339m) from MLS (April 16.35p1 at G=22.4 & 26.31p1 at G=21.4) and CSS-Kuiper (April 29.29-30p3 at G=22.2-7)
K20H03K 2020 HK3 (small asteroid, arc=9 days, H=24.2 ~49m, close passer) from ATLAS Haleakala (April 28.47-51p4)
Observations of recently (no longer) risk-listed objects
K20H04Z 2020 HZ4 (small asteroid, Q=4.384 AU, arc=13 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (April 29.43p3)
Observations of close-passing objects
K20H07T 2020 HT7 (arc=2 days, H=26.9 ~14m, NHATS target) from the Zwicky Transient Facility (ZTF) (April 28.38p2 & 28.44p2), Pomona College Table Mtn. Obs. (PCTMO) (April 28.43-50p3), ATLAS Haleakala (April 28.49-50p7), Andrushivka Obs. (April 28.93-95p7), Paus Obs. (April 28.99p2), Steward Mt. Lemmon Sta. (April 29.33-34p4), and MLS (April 29.44-46p4)
K20H07S 2020 HS7 (arc=0 days, H=29.1 ~5m) from Hidetaka Sato via iTelescope Obs. Mayhill (April 28.17p4) and M. Suzuki via iTelescope Obs. Siding Spring (April 28.49p4)
K20H07R 2020 HR7 (arc=3 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (April 29.39p4)
K20H06Y 2020 HY6 (arc=3 days, H=26.9 ~14m) from Mt. John Obs. (April 28.43p4) and Steward Mt. Lemmon Sta. (April 29.23-24p3)
K20H06W 2020 HW6 (arc=3 days, H=26.0 ~21m, NHATS target) from ATLAS Mauna Loa (April 28.44-45p3)
K20H06E 2020 HE6 (arc=4 days, H=25.6 ~26m) from PS1 (April 28.42-45p4)
K20H06B 2020 HB6 (arc=4 days, H=24.1 ~51m, NHATS target) from ATLAS Mauna Loa (April 28.36-49p8)
K20H05E 2020 HE5 (arc=7 days, H=27.7 ~10m, NHATS target) from CSS-Kuiper (April 29.42-44p4)
K20H04N 2020 HN4 (arc=8 days, H=25.6 ~26m) from CSS-Kuiper (April 29.38-42p3 at G=22.3-23.0)
K20H03U 2020 HU3 (arc=6 days, H=26.0 ~21m) from Astronomical Research Obs. Westfield (April 27.32-33p3 at V=22.1-2)
K20H03T 2020 HT3 (arc=7 days, H=25.3 ~29m, NHATS target) from ZTF (April 28.34-37p4) and PCTMO (April 28.40-48p3)
K20H02U 2020 HU2 (arc=12 days, H=26.5 ~17m, NHATS target) from PS1 (April 28.38-41p4) and Steward Mt. Lemmon Sta. (April 29.43p4)
K20H01E 2020 HE1 (arc=11 days, H=27.4 ~11m, NHATS target) from ARO Westfield (April 27.26-27p3 at V=22.1-6)
K20F02W 2020 FW2 (arc=48 days, H=24.1 ~51m) from ARO Westfield (April 27.39-40p3 at V=22.2-4)
K20B10W 2020 BW10 (arc=27 days, H=25.5 ~27m) from SATINO-1 (Jan. 28.99-01p2)
K16H06P 2016 HP6 (arc=3 opp, H=25.4 ~28m, NHATS target) from MLS (April 28.26-27p4)
K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from ATLAS Mauna Loa (April 28.39-41p4)
c8945 388945 2008 TZ3 from ATLAS Haleakala (April 28.39-42p4) and program code 1 via Kuban State Univ. Obs. (April 28.74-76p3 & 28.80-82p7)
Observation campaigns (NHATS targets, radar support)
K20H07Q 2020 HQ7 (arc=3 days, H=26.1 ~20m, NHATS) from Steward Mt. Lemmon Sta. (April 29.28-29p3)
K20H03Q 2020 HQ3 (arc=10 days, H=25.4 ~28m, NHATS) from Steward Mt. Lemmon Sta. (April 29.43p4)
K12E08M 2012 EM8 (arc=2 opp, H=24.7 ~39m, NHATS) from Pan-STARRS 2 (PS2) (April 28.42-44p3)
K06F36H 2006 FH36 (arc=3 opp, H=23.1 ~81m, NHATS) from ATLAS Mauna Loa (April 28.33-38p4)
J0166 190166 2005 UP156 (radar) from ATLAS Haleakala (April 28.35-38p4)
02102 2102 Tantalus (1975 YA) (radar) from ATLAS Haleakala (April 28.58-62p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20H08A 2020 HA8 (arc=2 days, H=22.2 ~123m) from Schwarzschild Obs. (April 27.91-92p3)
K20H07O 2020 HO7 (arc=3 days, H=23.8 ~59m) from Steward Mt. Lemmon Sta. (April 29.24-25p3)
K20H07N 2020 HN7 (arc=3 days, H=24.5 ~43m) from Steward Mt. Lemmon Sta. (April 29.24p3)
K20H07L 2020 HL7 (arc=3 days, H=22.9 ~89m) from PS2 (April 28.26-29p3)
K20H06S 2020 HS6 (arc=4 days, H=22.2 ~123m) from PS1 (April 28.43-45p2)
K20H06N 2020 HN6 (arc=4 days, H=22.7 ~98m) from Mt. John Obs. (April 28.47p4)
K20H05P 2020 HP5 (arc=7 days, H=25.1 ~32m) from Steward Mt. Lemmon Sta. (April 29.22p3)
K20H05K 2020 HK5 (arc=7 days, H=25.2 ~31m) from ARO Westfield (April 27.22-23p3 at V=22.1-3)
K20H03L 2020 HL3 (arc=8 days, H=24.0 ~54m) from Mt. John Obs. (April 28.38p4)
K20H02M 2020 HM2 (arc=26 days, H=25.7 ~25m) from PS1 (April 28.54-58p4)
K20H02H 2020 HH2 (arc=10 days, H=23.0 ~85m) from MLS (April 28.38-39p3)
K20H01V 2020 HV1 (arc=10 days, H=22.6 ~102m) from PS2 (April 28.41-44p3)
K20H01U 2020 HU1 (i=43.5°, arc=10 days, H=23.5 ~68m) from CSS-Kuiper (April 29.32-33p3)
K20H01Q 2020 HQ1 (arc=10 days, H=23.5 ~68m) from PS2 (April 28.56-60p3)
K20H01D 2020 HD1 (arc=17 days, H=23.7 ~62m) from ARO Westfield (April 27.15-17p3 at V=21.8-22.1)
K20H00Y 2020 HY (arc=11 days, H=23.0 ~85m) from PS1 (April 28.50-53p4) and Purple Mtn. Obs. Xuyi Station (April 28.64-67p3)
K20G01P 2020 GP1 (arc=24 days, H=23.6 ~65m) from ARO Westfield (April 27.23-24p3 at V=22.3-5)
K20F07A 2020 FA7 (arc=43 days, H=22.3 ~117m) from the Catalina Sky Survey (CSS) (April 28.31-32p3)
K20F06W 2020 FW6 (arc=29 days, H=23.2 ~78m) from ARO Westfield (April 27.19-20p3 at V=21.9-22.2)
K20F03A 2020 FA3 (arc=37 days, H=23.3 ~74m) from PS2 (April 28.35-39p4)
K20F02O 2020 FO2 (arc=94 days, H=22.4 ~112m) from PS2 (April 28.35-39p3)
K10J03J 2010 JJ3 (arc=2 opp, H=23.7 ~62m) from ATLAS Mauna Loa (April 28.36-40p4)
K10G06B 2010 GB6 (arc=3 opp, H=22.1 ~129m) from ARO Westfield (April 27.33-34p3 at V=21.8-22.3)
K09H77U 2009 HU77 (arc=2 opp, H=23.4 ~71m) from PS1 (April 28.32-36p3)
K02X40Q 2002 XQ40 (arc=5 opp, H=22.3 ~117m) from Xuyi Sta. (April 28.69-71p2)
K00H40O 2000 HO40 (q=0.360 AU, arc=3 opp, H=22.2 ~123m) from ATLAS Mauna Loa (April 28.46-55p4)
K19Y00A 2019 YA (arc=133 days, H=21.8 ~148m) from ARO Westfield (April 27.28-29p2 at V=22.2-3)
K19X00G 2019 XG (arc=150 days, H=21.9 ~141m) from ARO Westfield (April 27.13-14p3 at V=21.9-22.1)
Observations of other objects
K20H06D 2020 HD6 from PS1 (April 28.38-41p4 at w=21.91-22.34)
K20H05S 2020 HS5 (arc=11 days, H=19.8 ~371m) from CSS-Kuiper (April 29.34-35p3)
K20H05H 2020 HH5 (Q=4.496 AU, arc=9 days, H=19.1 ~513m) from MLS (April 28.33-35p4)
K20H02E 2020 HE2 (arc=10 days, H=21.2 ~195m) from MLS (April 28.25-27p4)
K20H01F 2020 HF1 (arc=12 days, H=19.0 ~537m) from ATLAS Mauna Loa (April 28.35-39p4)
K20G03N 2020 GN3 (arc=38 days, H=19.1 ~513m) from PS1 (April 28.42-44p2)
K20G03F 2020 GF3 (arc=25 days, H=19.8 ~371m) from ATLAS Haleakala (April 28.41-46p4) and JAXA Space Tracking & Communications Center (JAXA STCC) (April 28.72-73p3)
K20G02D 2020 GD2 (arc=178 days, H=20.5 ~269m) from ATLAS Mauna Loa (April 28.36-42p4)
K20F06B 2020 FB6 (arc=34 days, H=20.7 ~245m) from ATLAS Haleakala (April 28.45-50p4)
K20F01S 2020 FS1 (arc=41 days, H=21.1 ~204m) from ARO Westfield (April 27.09-11p3 at V=22.0-22.4)
K20B08G 2020 BG8 (arc=126 days, H=21.1 ~204m) from MLS (April 28.25-27p3 at G=21.3-22.2)
K20B05O 2020 BO5 (arc=99 days, H=21.0 ~214m) from ATLAS Mauna Loa (April 28.42-49p4)
K19L06L 2019 LL6 (arc=167 days, H=20.6 ~257m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Nov. 27.49p1 & 2019 Nov. 28.56p1)
K18E04E 2018 EE4 (arc=4 opp, H=20.5 ~269m) from MLS (April 28.44-45p4)
K17O18S 2017 OS18 (arc=3 opp, H=20.1 ~323m) from PS1 (April 28.38-41p4)
K15VE2U 2015 VU142 (arc=2 opp, H=19.5 ~426m) from Xuyi Sta. (April 28.69-72p3)
K15U52K 2015 UK52 (arc=3 opp, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (April 29.22-23p3)
K15TE5A 2015 TA145 (arc=3 opp, H=21.5 ~170m) from Xuyi Sta. (April 28.66-67p2)
K15TE3X 2015 TX143 (arc=6 opp, H=19.8 ~371m) from CSS (April 28.29-30p4)
K15S02Y 2015 SY2 (arc=3 opp, H=19.3 ~467m) from PS1 (April 28.38-39p2)
K15O35L 2015 OL35 (Q=4.255 AU, arc=2 opp, H=18.1 ~812m) from MLS (April 28.15-16p3)
K15H10B 2015 HB10 (arc=4 opp, H=18.2 ~776m) from PS1 (April 28.42-46p7)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from CSS (April 28.39-41p4)
K15FB8T 2015 FT118 (arc=3 opp, H=20.6 ~257m) from ZTF (April 26.33-37p4)
K14X08G 2014 XG8 (i=57.1°, arc=4 opp, H=17.4 ~1.12 km) from Steward Mt. Lemmon Sta. (April 29.48p3 at G=22.1-3)
K12TP9B 2012 TB259 (arc=2 opp, H=21.3 ~186m) from MLS (April 28.27-29p4)
K11F02Z 2011 FZ2 (Q=4.750 AU, arc=4 opp, H=17.5 ~1.07 km) from ATLAS Haleakala (April 28.59-62p4)
K10X11D 2010 XD11 (q=0.326 AU, Q=4.098 AU, arc=4 opp, H=17.9 ~891m) from CSS (April 28.20-21p4)
K10J33K 2010 JK33 (arc=3 opp, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (April 29.28-29p3)
K10ED5C 2010 EC135 (arc=3 opp, H=20.2 ~309m) from Xuyi Sta. (April 28.63-66p3)
K09W07Z 2009 WZ7 (arc=3 opp, H=19.8 ~371m) from ATLAS Haleakala (April 28.54-55p4)
J98M24R 1998 MR24 (arc=5 opp, H=19.2 ~490m) from PS1 (April 28.59-61p4)
J98H03N 1998 HN3 (Q=5.029 AU, arc=4 opp, H=18.3 ~741m) from PS1 (April 28.38-41p4)
r9940 539940 2017 HW1 from SONEAR (April 28.08p3), ATLAS Haleakala (April 28.41-46p5), Al-Fulaij Obs. (April 28.77p1), and QOS Obs. (April 28.93-95p22)
q3670 523670 2013 EP41 from MLS (April 28.34-35p4)
q2684 522684 2016 JP from ATLAS Haleakala (April 28.51-52p4)
q0585 520585 2014 OA2 from Xuyi Sta. (April 28.65-66p2)
p5446 515446 2013 UG5 from PS1 (April 28.42-46p4)
o0094 500094 2012 BC20 from CSS (April 28.22-23p4)
n8066 498066 2007 RM133 from ZTF (April 27.39-40p2)
n1565 491565 2012 QF49 from MLS (April 28.21-23p4)
n0684 490684 2010 LL34 from ARO Westfield (April 27.37p3 at V=21.8-22.1)
m3878 483878 2005 YS165 from CSS (April 28.35-37p4)
m2566 482566 2012 WK4 from MLS (April 28.19-21p4) and Xuyi Sta. (April 28.57p1)
k8910 468910 2014 KQ76 from MLS (April 28.38-39p3) and ATLAS Haleakala (April 28.45-48p4)
k5892 465892 2010 UT7 from MLS (April 28.30-31p4)
h6324 436324 2010 GZ6 from PS2 (April 28.41-44p4)
h6030 436030 2009 JO2 from MLS (April 28.44-46p4) and ATLAS Haleakala (April 28.52-53p4)
h3992 433992 2000 HD74 from ZTF (April 27.39-42p4)
f8265 418265 2008 EA32 from ZTF (April 27.15p2 & 29.14-15p3)
e2267 402267 2005 QE166 from PS2 (April 28.25-29p4)
d4783 394783 2008 HD3 from ATLAS Mauna Loa (April 28.40-42p4)
d0929 390929 2005 GP21 from PS1 (April 28.32-36p4)
c5268 385268 2001 RC12 from PS1 (April 28.31-35p4)
c0929 380929 2006 HU30 from MLS (April 28.23-25p8) and Xuyi Sta. (April 28.60-63p3)
b3428 373428 1999 TC5 from ATLAS Haleakala (April 28.39-41p4)
Z0536 350536 2000 QY69 from PS1 (April 28.28-30p3)
Y9063 349063 2006 XA from ATLAS Mauna Loa (April 28.58-61p4) and Xuyi Sta. (April 28.82-83p3)
X5746 335746 2007 EJ26 from MLS (April 28.36-37p4)
X3555 333555 2005 VY17 from CSS (April 28.33-34p4)
X0659 330659 2008 GG2 from Xuyi Sta. (April 28.64-65p2)
V8050 318050 2004 FC32 from ZTF (April 27.27-34p3), MLS (April 28.27-29p4), and ATLAS Haleakala (April 28.40-42p4)
S5110 285110 1995 MA1 from PS1 (April 28.50-54p4)
R6732 276732 2004 EV9 from ZTF (April 26.17-21p2)
R6274 276274 2002 SS41 from PS2 (April 28.31-35p6)
R5976 275976 2001 XV10 from PS1 (April 28.42-46p4)
R5714 275714 2000 YH4 from PS1 (April 28.50-54p4)
P3586 253586 2003 TX7 from MLS (April 28.42-44p4)
P0614 250614 2005 GG from MLS (April 28.40-41p4)
O8926 248926 2006 WZ2 from Xuyi Sta. (April 28.52-55p3)
O2216 242216 2003 RN10 from MLS (April 28.46-47p4)
L9527 219527 2001 QK142 from PS1 (April 28.43-46p4)
I9973 189973 2003 XE11 from PS1 (April 28.43-46p4)
I4990 184990 2006 KE89 from ATLAS Haleakala (April 28.53-56p4)
H5729 175729 1998 BB10 from ARO Westfield (April 27.38-39p2 at V=22.0-22.3)
G9675 169675 2002 JM97 from ATLAS Mauna Loa (April 28.47-49p4) and Xuyi Sta. (April 28.77-80p3)
G3683 163683 2002 YP2 from MLS (April 28.23-25p4)
G3679 163679 2002 XG84 from PS1 (April 28.38-41p4 at w=21.4-22.1)
F9686 159686 2002 LB6 from PS1 (April 28.28-31p7)
F4993 154993 2005 EA94 from MLS (April 28.21-23p4) and Xuyi Sta. (April 28.56-58p3)
E2781 142781 2002 UM11 from PS1 (April 28.55-59p4)
E2555 142555 2002 TB58 from ATLAS Mauna Loa (April 28.34-38p4)
E1531 141531 2002 GB from ATLAS Mauna Loa (April 28.45-46p5)
E1053 141053 2001 XT1 from PS1 (April 28.42-45p2)
D9289 139289 2001 KR1 from PS2 (April 28.31-35p4 & 28.40-44p4)
D7170 137170 1999 HF1 from ATLAS Haleakala (April 28.59-63p4)
D6993 136993 1998 ST49 from MLS (April 28.19-21p4)
D6795 136795 1997 BQ from MLS (April 28.12-14p4)
D6618 136618 1994 CN2 from ATLAS Haleakala (April 28.35-38p4)
99935 99935 2002 AV4 from ATLAS Mauna Loa (April 28.36-39p3)
90075 90075 2002 VU94 from ATLAS Haleakala (April 28.26-29p4)
89830 89830 2002 CE from CSS (April 28.22-24p4)
85275 85275 1994 LY from ATLAS Haleakala (April 28.52-54p4)
68350 68350 2001 MK3 from ZTF (April 25.38-42p2, 27.39-43p2, 27.49p1 & 28.38-42p2)
65674 65674 1988 SM from PS2 (April 28.25-29p4)
54401 54401 2000 LM from ATLAS Mauna Loa (April 28.42-46p4)
53110 53110 1999 AR7 from ZTF (April 27.15-16p2 & 29.15p2)
52768 52768 1998 OR2 from Olmen Obs. (April 24.82-98p11), Linhaceira Obs. (April 28.87-01p8), and Huelva Obs. (April 28.98-01p3)
36183 36183 1999 TX16 from ATLAS Mauna Loa (April 28.48p3), PS1 (April 28.55-58p4), and Xuyi Sta. (April 28.72-75p3)
26760 26760 2001 KP41 from ATLAS Haleakala (April 28.35-37p4)
21277 21277 1996 TO5 from PS1 (April 28.50-54p3)
20255 20255 1998 FX2 from ZTF (April 28.18-20p4)
19764 19764 2000 NF5 from ATLAS Mauna Loa (April 28.53-55p3)
17188 17188 1999 WC2 from MLS (April 28.46-47p4)
16064 16064 Davidharvey (1999 RH27) from PS1 (April 28.42-45p4)
11311 11311 Peleus (1993 XN2) from Xuyi Sta. (April 28.63-66p2)
11284 11284 Belenus (1990 BA) from ATLAS Mauna Loa (April 28.45-46p4)
09400 9400 1994 TW1 from CSS (April 28.17-19p4)
08566 8566 1996 EN from ATLAS Haleakala (April 28.27-28p4)
08014 8014 1990 MF from ATLAS Mauna Loa (April 28.46-48p4)
06047 6047 1991 TB1 from ATLAS Haleakala (April 28.27-30p4)
05693 5693 1993 EA from MLS (April 28.17-18p4) and Xuyi Sta. (April 28.52-54p3)
05626 5626 1991 FE from ATLAS Haleakala (April 28.27-29p4)
04954 4954 Eric (1990 SQ) from ATLAS Mauna Loa (April 28.36-39p4)
03352 3352 McAuliffe (1981 CW) from ATLAS Mauna Loa (April 28.54-55p4)
01866 1866 Sisyphus (1972 XA) from CSS (April 28.17-19p4)
01864 1864 Daedalus (1971 FA) from ATLAS Haleakala (April 28.28-31p4) and Xuyi Sta. (April 28.52-54p3)
01685 1685 Toro (1948 OA) from ATLAS Mauna Loa (April 28.59-61p3)
01627 1627 Ivar (1929 SH) from MLS (April 28.14-16p4), ATLAS Haleakala (April 28.25-27p4), and Xuyi Sta. (April 28.52-54p3)

MPEC 2020-H228 - "11:50 UT" - 2020 HT8

K20H08T 2020 HT8 (Earth MOID=0.2 LD, H=28.6 ~6m) was picked up at 1230 UT on 27 April by PS1, observing it at April 27.52-56p3. This detection was confirmed by Schwarzschild Obs. (April 27.89-90p3), Visnjan Obs. (April 28.07-08p3), ARO Westfield (April 28.27-28p4), PS2 (April 28.56-59p2), and CSS-Kuiper (April 29.35-36p3 at G=22.3-8).

MPEC 2020-H227 - "11:49 UT" - 2020 HS8

K20H08S 2020 HS8 (H=21.2 ~195m) was picked up at 1324 UT on 26 April by PS1, observing it at April 26.56-58p3. This detection was confirmed by ARO Westfield (April 27.28-29p3 & 28.36p2) and Steward Mt. Lemmon Sta. (April 27.34-35p4 at G=23.1 & 29.40-41p3 at G=21.0-5).

MPEC 2020-H226 - "11:47 UT" - 2020 HR8

K20H08R 2020 HR8 (Earth MOID=3.2 LD, H=26.9 ~14m) was picked up at 0956 UT on 27 April by PS1, observing it at April 27.41-45p3 and 28.38-41p4. This detection was confirmed by Schwarzschild Obs. (April 27.95-96p3), Steward Mt. Lemmon Sta. (April 28.30p3 & 29.21-22p3), and Mt. John Obs. (April 28.56p4).

MPEC 2020-H225 - "11:46 UT" - 2020 HQ8

K20H08Q 2020 HQ8 (small asteroid, Earth MOID=10.0 LD, H=26.3 ~19m) was picked up at 1230 UT on 27 April by PS1, observing it at April 27.52-54p3 and 28.38-41p4. This detection was confirmed by Schwarzschild Obs. (April 27.89p3), KLENOT (April 27.91p4), Visnjan Obs. (April 27.97p4), ARO Westfield (April 28.28-29p3), and Steward Mt. Lemmon Sta. (April 28.34p4 & 29.38p3).

MPEC 2020-H224 - "11:44 UT" - 2020 HP8

K20H08P 2020 HP8 (H=20.2 ~309m) was picked up at 0517 UT on 27 April by MLS, observing it at April 27.22-24p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 27.26-27p4, 28.17-18p4 & 29.16-17p4), KLENOT (April 27.82p5), Visnjan Obs. (April 27.85-86p3), and Mt. John Obs. (April 28.36-37p4 & 29.44-45p4).

MPEC 2020-H223 - "11:43 UT" - 2020 HO8

K20H08O 2020 HO8 (H=21.4 ~178m) was picked up at 0641 UT on 26 April by PS1, observing it at April 26.28-31p4 and 27.27-29p3. This detection was confirmed by KLENOT (April 26.82-83p4 & 27.81p2), Visnjan Obs. (April 26.83p4), Schwarzschild Obs. (April 26.84p3 & 27.89p3), St. Pardon de Conques Obs. (April 26.92-93p3), ARO Westfield (April 27.08-09p4), MLS (April 27.22-23p4), Steward Mt. Lemmon Sta. (April 28.14p4 & 29.16p4), and Mt. John Obs. (April 29.46p4).

MPEC 2020-H222 - "00:36 UT" - 2020 HN8

K20H08N 2020 HN8 (small asteroid, H=23.7 ~62m) was picked up at 1110 UT on 19 April by PS1, observing it at April 19.47-50p4, 21.41-44p3, 25.44-46p3, and 26.43-45p3.

Observers on 29 April '20

A total of 31 observers appear in today's MPECs.

Code	Observer / observatory
`C97`	Al-Fulaij Obs., 1 in MPEC 2020-H229 -- 539940
`A50`	Andrushivka Obs. in Ukraine, 1 in MPEC 2020-H229 -- 2020 HT7
`H21`	Astronomical Research Obs. Westfield in Illinois, 17 in MPECs 2020-H223, 2020-H225, 2020-H227, 2020-H228 & 2020-H229 -- 2020 HU3, 2020 HT8, 2020 HS8, 2020 HQ8, 2020 HO8, 2020 HK5, 2020 HE1, 2020 HD1, 2020 GP1, 2020 FW6, 2020 FW2, 2020 FS1, 2019 YA, 2019 XG, 2010 GB6, 490684, 175729
`T05`	ATLAS Haleakala in Hawaii, 26 in MPEC 2020-H229 -- 2020 HT7, 2020 HK3, 2020 GF3, 2020 FB6, 2011 FZ2, 2009 WZ7, 90075, 85275, 539940, 522684, 468910, 436030, 388945, 373428, 318050, 26760, 190166, 184990, 137170, 136618, 8566, 6047, 5626, 2102, 1864, 1627
`T08`	ATLAS Mauna Loa in Hawaii, 23 in MPEC 2020-H229 -- 2020 HW6, 2020 HF1, 2020 HB6, 2020 GD2, 2020 BO5, 2014 JO25, 2010 JJ3, 2006 FH36, 2000 HO40, 99935, 54401, 394783, 36183, 349063, 19764, 169675, 142555, 141531, 11284, 8014, 4954, 3352, 1685
`703`	Catalina Sky Survey (CSS) in Arizona, 10 in MPEC 2020-H229 -- 2020 FA7, 2015 TX143, 2015 FP332, 2010 XD11, 89830, 500094, 483878, 333555, 9400, 1866
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPECs 2020-H228, 2020-H229, 2020-H230 & 2020-H234 -- 2020 HV8, 2020 HU1, 2020 HT8, 2020 HS5, 2020 HN4, 2020 HJ4, 2020 HE5, 2020 HA9
`J37`	Huelva Obs. in Spain, 1 in MPEC 2020-H229 -- 52768
`H06\|`	Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-H229 -- 2020 HS7
`Q62[`	M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-H229 -- 2020 HS7
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-H229 -- 2020 GF3
`246`	KLENOT in the Czech Republic, 4 in MPECs 2020-H223, 2020-H224, 2020-H225 & 2020-H231 -- 2020 HY8, 2020 HQ8, 2020 HP8, 2020 HO8
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-H229 -- 388945
`938`	Linhaceira Obs. in Portugal, 1 in MPEC 2020-H229 -- 52768
`474`	Mt. John Obs. in New Zealand, 7 in MPECs 2020-H223, 2020-H224, 2020-H226, 2020-H229 & 2020-H231 -- 2020 HY8, 2020 HY6, 2020 HR8, 2020 HP8, 2020 HO8, 2020 HN6, 2020 HL3
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 35 in MPECs 2020-H223, 2020-H224, 2020-H229, 2020-H230, 2020-H231, 2020-H232 & 2020-H233 -- 2020 HY8, 2020 HV8, 2020 HT7, 2020 HP8, 2020 HO8, 2020 HJ4, 2020 HH5, 2020 HH2, 2020 HE2, 2020 BG8, 2018 EE4, 2017 GT6, 2016 HP6, 2015 OL35, 2012 TB259, 2006 GV2, 523670, 491565, 482566, 468910, 465892, 436030, 380929, 335746, 318050, 253586, 250614, 242216, 17188, 163683, 154993, 136993, 136795, 5693, 1627
`C23`	Olmen Obs. in Belgium, 1 in MPEC 2020-H229 -- 52768
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 39 in MPECs 2020-H222, 2020-H223, 2020-H225, 2020-H226, 2020-H227, 2020-H228, 2020-H229, 2020-H232, 2020-H233 & 2020-H234 -- 2020 HY, 2020 HU2, 2020 HT8, 2020 HS8, 2020 HS6, 2020 HR8, 2020 HQ8, 2020 HO8, 2020 HN8, 2020 HM6, 2020 HM2, 2020 HE6, 2020 HD6, 2020 HA9, 2020 GN3, 2017 OS18, 2017 GT6, 2015 SY2, 2015 HB10, 2009 HU77, 2006 GV2, 1998 MR24, 1998 HN3, 515446, 390929, 385268, 36183, 350536, 285110, 275976, 275714, 219527, 21277, 189973, 163679, 16064, 159686, 142781, 141053
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 12 in MPECs 2020-H228 & 2020-H229 -- 2020 HV1, 2020 HT8, 2020 HQ1, 2020 HL7, 2020 FO2, 2020 FA3, 2012 EM8, 65674, 436324, 402267, 276274, 139289
`B49`	Paus Obs. in Spain, 1 in MPEC 2020-H229 -- 2020 HT7
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-H229 -- 2020 HT7, 2020 HT3
`D29`	Purple Mtn. Obs. Xuyi Station in China, 18 in MPEC 2020-H229 -- 2020 HY, 2015 VU142, 2015 TA145, 2010 EC135, 2002 XQ40, 520585, 482566, 380929, 36183, 349063, 330659, 248926, 169675, 154993, 11311, 5693, 1864, 1627
`L18`	QOS Obs., 1 in MPEC 2020-H229 -- 539940
`C95`	SATINO-1 in France, 1 in MPEC 2020-H229 -- 2020 BW10
`033`	Schwarzschild Obs. in Germany, 5 in MPECs 2020-H223, 2020-H225, 2020-H226, 2020-H228 & 2020-H229 -- 2020 HT8, 2020 HR8, 2020 HQ8, 2020 HO8, 2020 HA8
`Y00`	SONEAR in Brazil, 1 in MPEC 2020-H229 -- 539940
`I93`	St. Pardon de Conques Obs. in France, 1 in MPEC 2020-H223 -- 2020 HO8
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 25 in MPECs 2020-H223, 2020-H224, 2020-H225, 2020-H226, 2020-H227, 2020-H229, 2020-H231, 2020-H232 & 2020-H233 -- 2020 HZ4, 2020 HY8, 2020 HY6, 2020 HU2, 2020 HT7, 2020 HS8, 2020 HR8, 2020 HR7, 2020 HQ8, 2020 HQ7, 2020 HQ6, 2020 HQ4, 2020 HQ3, 2020 HP8, 2020 HP5, 2020 HO8, 2020 HO7, 2020 HN7, 2020 HM7, 2020 HE7, 2017 GT6, 2015 UK52, 2014 XG8, 2010 JK33, 2006 GV2
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-H229 -- 2019 LL6
`L01`	Visnjan Obs. in Croatia, 5 in MPECs 2020-H223, 2020-H224, 2020-H225, 2020-H228 & 2020-H231 -- 2020 HY8, 2020 HT8, 2020 HQ8, 2020 HP8, 2020 HO8
`I41`	Zwicky Transient Facility (ZTF) in southern California, 11 in MPEC 2020-H229 -- 2020 HT7, 2020 HT3, 2015 FT118, 68350, 53110, 498066, 433992, 418265, 318050, 276732, 20255

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

Impact Risk Monitoring on 29 April '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 HY8	JPL Sentry	2000	2056-2073	2	8.9337e-08	-5.67	-5.70	0	JPL: Computed at 12:58 today Pacific time based on 27 observations spanning 2.1958 days (2020-Apr-27.38722 to 2020-Apr-29.583027). Diameter approximately 0.095 km. from weighted mean H=22.77.

2020 HW7	NEODyS	1700	2044-2117	5	1.93e-07	-7.64	-7.7	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2020-04-26.366 to 2020-04-28.488."

2020 HM7	NEODyS	1700	2088	1	1.51e-08	-8.40	-8.4	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2020-04-25.559 to 2020-04-29.251."

2020 HE7	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1457 UTC today
2020 HE7	NEODyS	1700	2086-2111	3	3.12e-09	-10.79	-10.95	0	NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2020-04-26.330 to 2020-04-29.190."

2020 HQ6	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1428 UTC today

2020 HM6	JPL Sentry	1700	2090-2090	1	4.350e-09	-9.17	-9.17	0	JPL: Computed at 08:08 today Pacific time based on 45 observations spanning 4.1083 days (2020-Apr-24.35008 to 2020-Apr-28.458346). Diameter approximately 0.016 km. from weighted mean H=26.60.
2020 HM6	NEODyS	1700	2083-2090	3	1.8e-08	-8.52	-8.62	0	NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2020-04-24.351 to 2020-04-28.459."

2020 HQ4	JPL Sentry	1700	2052-2119	39	0.0001385846158	-5.00	-5.37	0	JPL: Computed at 07:43 today Pacific time based on 85 observations spanning 7.0881 days (2020-Apr-22.14953 to 2020-Apr-29.2376). Diameter approximately 0.015 km. from weighted mean H=26.82.
2020 HQ4	NEODyS	1700	2051-2118	162	1.59e-04	-4.96	-5.34	0	NEODyS: "Based on 88 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-04-29.238."

2020 HJ4	NEODyS	1700	R E M O V E D						-
2020 HJ4	JPL Sentry	1800	2063-2063	1	5.147e-10	-6.84	-6.84	0	JPL #2 for the day: Computed at 10:28 today Pacific time based on 33 observations spanning 12.952 days (2020-Apr-16.351354 to 2020-Apr-29.30299). Diameter approximately 0.320 km. from weighted mean H=20.12.

2020 HK3	NEODyS	1700	2073	1	1.12e-08	-7.29	-7.29	0	NEODyS: "Based on 76 optical observations (of which 0 are rejected as outliers) from 2020-04-19.547 to 2020-04-28.511."

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 April '20

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

2300	Grabbed MPEC 2020-H234 - 2020 HA9 - see above
2000	Noted that JPL Sentry has posted 2020 HY8 as an impact risk - see above Grabbed MPEC 2020-H232 - 2006 GV2 - see above Grabbed MPEC 2020-H233 - 2017 GT6 - see above
1900	Grabbed MPEC 2020-H231 - 2020 HY8 - see above
1800	Noted that JPL Sentry has updated its 2020 HJ4 risk assessment - see above
1700	Noted that JPL Sentry has removed 2020 HE7 as an impact risk - see above Noted that NEODyS has updated its 2020 HE7 risk assessment - see above Noted that JPL Sentry has updated its 2020 HJ4 risk assessment - see above Noted that NEODyS has removed 2020 HJ4 as an impact risk - see above Noted that NEODyS has updated its 2020 HK3 risk assessment - see above Noted that JPL Sentry has reposted 2020 HM6 as an impact risk - see above Noted that NEODyS has updated its 2020 HM6 risk assessment - see above Noted that NEODyS has updated its 2020 HM7 risk assessment - see above Noted that JPL Sentry has updated its 2020 HQ4 risk assessment - see above Noted that NEODyS has updated its 2020 HQ4 risk assessment - see above Noted that JPL Sentry has removed 2020 HQ6 as an impact risk - see above Noted that NEODyS has posted 2020 HW7 as an impact risk - see above Grabbed MPEC 2020-H223 - 2020 HO8 - see above Grabbed MPEC 2020-H224 - 2020 HP8 - see above Grabbed MPEC 2020-H225 - 2020 HQ8 - see above Grabbed MPEC 2020-H226 - 2020 HR8 - see above Grabbed MPEC 2020-H227 - 2020 HS8 - see above Grabbed MPEC 2020-H228 - 2020 HT8 - see above Grabbed MPEC 2020-H229 - Daily Orbit Update - see above Grabbed MPEC 2020-H230 - 2020 HV8 - see above
0441	Grabbed MPEC 2020-H222 - 2020 HN8 - see above

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