2020-05-16 Tracking News

Contents on 16 May '20

IAU Minor Planet Center
- NEOCP Activity -- 99 listings
- New MPECs -- seven MPECs
Observers -- 52 observers
Impact Risk Monitoring -- three objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1135 risk-listed objects, 67 have had news in the last 31 days. Updated at 2359 UTC on 16 May.
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 16 May '20

The MPC's NEO Confirmation Page has 99 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 99 objects listed. Of these, 59 were "one nighters." So far The Tracking News has counted a total of 111 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 16 May '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-K01 time-stamped "01:12 UT" - 2020 JU1 - see below
MPEC 2020-K02 time-stamped "12:10 UT" - Daily Orbit Update - see below
MPEC 2020-K03 time-stamped "13:46 UT" - 2011 JA - see below
MPEC 2020-K04 time-stamped "15:00 UT" - 2018 XA5 - see below
MPEC 2020-K05 time-stamped "20:17 UT" - 2020 JV1 - see below
MPEC 2020-K06 time-stamped "22:01 UT" - 2020 JX1 - see below
MPEC 2020-K07 time-stamped "22:10 UT" - 2020 JY1

MPEC 2020-K07 - "22:10 UT" - 2020 JY1

K20J01Y 2020 JY1 (small asteroid, Earth MOID=1.8 LD, H=25.3 ~29m) was picked up at 1051 UT on 15 May by ATLAS Mauna Loa, observing it at May 15.45-47p4. This detection was confirmed by Schwarzschild Obs. (May 15.87p3, 16.07p3 & 16.85p3), Guidestar Obs. (May 15.90-91p4), Pascoli Obs. (May 15.92-93p3), Northolt Branch Obs. (May 15.95-97p3), Clixby Obs. (May 15.95p3), Squirrel Valley Obs. (May 16.10-13p4), Pan-STARRS 2 (PS2) (May 16.47-51p3), and Arcadia Obs. (May 16.56-58p3).

MPEC 2020-K06 - "22:01 UT" - 2020 JX1

K20J01X 2020 JX1 (risk listed, Earth MOID=1.4 LD, H=23.9 ~56m) was picked up at 0712 UT on 14 May by Pan-STARRS 1 (PS1), observing it at May 14.30-33p3 and 16.28-31p4. This detection was confirmed by R. Wainscoat on Mauna Kea (May 16.44-45p4).

MPEC 2020-K05 - "20:17 UT" - 2020 JV1

K20J01V 2020 JV1 (small asteroid, H=26.5 ~17m) was picked up at 0933 UT on 15 May by PS1, observing it at May 15.40-43p4. This detection was confirmed by Schwarzschild Obs. (May 15.92p5), Steward Obs. Mt. Lemmon Station (May 16.16-17p4 at G=21.0-22.1), Pomona College Table Mtn. Obs. (PCTMO) (May 16.37-46p4), and R. Wainscoat/Mauna Kea (May 16.51p4).

MPEC 2020-K04 - "15:00 UT" - 2018 XA5

K18X05A 2018 XA5 (H=23.7 ~62m, NHATS) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Sept. 25.55p1 at G=23.95 & 2019 Sept. 26.47p1 at G=24.15)

MPEC 2020-K03 - "13:46 UT" - 2011 JA

K11J00A 2011 JA (i=41.6°, Earth MOID=0.1 LD, H=21.4 ~178m) from PS1 (2019 Oct. 31.30-33p3 at G=21.8-22.5), PS2 (2019 Dec. 8.22p1), and the Mt. Lemmon Survey (MLS) (May 16.17-20p4 at G=20.9-21.3 & 16.32p4 at G=21.1-22.2)

<< DOU on 16 May '20 >> MPEC 2020-K02 - "12:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K20H04Q 2020 HQ4 (small asteroid, arc=23 days, H=26.9 ~14m, close passer, NHATS target) from PS1 (May 15.44-48p4)
Observations of recently (no longer) risk-listed objects
K20J00P 2020 JP (Q=5.581 AU, arc=12 days, H=21.0 ~214m) from Guidestar Obs. (May 16.06-07p3) and Transit Dreams Obs. (May 16.26-28p3)
K20H07M 2020 HM7 (small asteroid, arc=20 days, H=25.8 ~23m, close passer, NHATS target) from PS1 (May 15.31-33p3 at w=22.34-80)
Observations of close-passing objects
K20J01T 2020 JT1 (arc=2 days, H=24.3 ~47m) from Dettelbach Vineyard Obs. (May 15.87-89p3) and Clixby Obs. (May 15.91-92p5)
K20J01R 2020 JR1 (arc=2 days, H=27.8 ~9m, NHATS target) from PS1 (May 15.40-43p4), Schwarzschild Obs. (May 16.01p3), and Steward Mt. Lemmon Sta. (May 16.39-40p4)
K20J01Q 2020 JQ1 (q=0.356 AU, arc=2 days, H=26.1 ~20m) from Steward Mt. Lemmon Sta. (May 16.15-16p4)
K20J01M 2020 JM1 (arc=3 days, H=26.1 ~20m, NHATS target) from Steward Mt. Lemmon Sta. (May 16.38p4)
K20J01L 2020 JL1 (arc=2 days, H=28.2 ~8m) from Steward Mt. Lemmon Sta. (May 16.35p4)
K20J01K 2020 JK1 (arc=2 days, H=27.6 ~10m, NHATS target) from Great Shefford Obs. (May 15.01-02p4) and Steward Mt. Lemmon Sta. (May 16.31p4)
K20J01F 2020 JF1 (arc=2 days, H=27.1 ~13m) from Great Shefford Obs. (May 15.96-97p3)
K20J01B 2020 JB1 (arc=3 days, H=26.5 ~17m, NHATS target) from Steward Mt. Lemmon Sta. (May 16.31p4)
K20J00Y 2020 JY (arc=4 days, H=24.5 ~43m) from Dettelbach Vineyard Obs. (May 16.03-05p3), Guidestar Obs. (May 16.03-05p4), Transit Dreams Obs. (May 16.25p3), and Steward Mt. Lemmon Sta. (May 16.39p4)
K20J00R 2020 JR (arc=10 days, H=25.0 ~34m, NHATS target) from Steward Mt. Lemmon Sta. (May 16.39p4)
K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from PS1 (May 15.30-34p4) and Transit Dreams Obs. (May 16.17-18p2)
K13X22A 2013 XA22 (arc=2 opp, H=22.8 ~93m, NHATS target) from ATLAS Mauna Loa (May 15.48-52p4)
Observation campaigns (NHATS targets, radar support)
K20J01G 2020 JG1 (arc=4 days, H=26.2 ~19m, NHATS) from Steward Mt. Lemmon Sta. (May 16.35-36p4)
K20J01E 2020 JE1 (arc=3 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (May 16.15p4)
K20J00M 2020 JM (arc=12 days, H=26.2 ~19m, NHATS) from PS1 (May 15.44-47p3)
K19Y03W 2019 YW3 (arc=143 days, H=22.8 ~93m, NHATS) from PS1 (May 15.39-42p3)
J0166 190166 2005 UP156 (radar) from ATLAS Mauna Loa (May 15.38-40p4) and Transit Dreams Obs. (May 16.06-07p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20J01P 2020 JP1 (arc=3 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 16.35-36p4)
K20J01O 2020 JO1 (arc=3 days, H=24.0 ~54m) from Steward Mt. Lemmon Sta. (May 16.36p4)
K20J01J 2020 JJ1 (i=36.9°, arc=3 days, H=23.4 ~71m) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (May 16.38p4)
K20J01C 2020 JC1 (arc=3 days, H=26.0 ~21m) from Steward Mt. Lemmon Sta. (May 16.15p4)
K20J01A 2020 JA1 (arc=3 days, H=26.9 ~14m) from Steward Mt. Lemmon Sta. (May 16.31p4)
K20J00X 2020 JX (arc=4 days, H=23.9 ~56m) from Steward Mt. Lemmon Sta. (May 16.42p4)
K20J00T 2020 JT (arc=15 days, H=22.4 ~112m) from Steward Mt. Lemmon Sta. (May 16.46p4)
K20J00B 2020 JB (arc=15 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (May 16.41p4)
K20H10C 2020 HC10 (arc=17 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 16.46p4)
K20H09R 2020 HR9 (Q=4.201 AU, arc=54 days, H=24.3 ~47m) from MLS (May 15.31-33p4)
K20H09G 2020 HG9 (arc=18 days, H=23.3 ~74m) from ATLAS Mauna Loa (May 15.41-43p4) and Steward Mt. Lemmon Sta. (May 16.37p4)
K20H07X 2020 HX7 (arc=19 days, H=25.4 ~28m) from PS1 (May 15.44-48p3)
K20H07D 2020 HD7 (arc=25 days, H=25.5 ~27m) from Steward Mt. Lemmon Sta. (May 16.41-42p4)
K20H06S 2020 HS6 (Q=4.057 AU, arc=22 days, H=22.2 ~123m) from Great Shefford Obs. (May 15.91-93p2) and Steward Mt. Lemmon Sta. (May 16.16p3)
K20H02T 2020 HT2 (arc=55 days, H=22.3 ~117m) from ATLAS Mauna Loa (May 15.41-43p4)
K20H02H 2020 HH2 (arc=28 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (May 16.43p4)
K20F07A 2020 FA7 (arc=61 days, H=22.3 ~117m) from Astronomical Research Obs. Westfield (April 11.08p3) and Steward Mt. Lemmon Sta. (May 16.46-47p4)
K20F03A 2020 FA3 (arc=54 days, H=23.3 ~74m) from MLS (May 15.14-16p3)
K17F90Q 2017 FQ90 (arc=2 opp, H=22.2 ~123m) from PS1 (May 15.40-43p4)
K20H06H 2020 HH6 (arc=33 days, H=21.9 ~141m) from PS1 (May 15.50-54p4)
Observations of other objects
K20H09W 2020 HW9 (q=0.330 AU, arc=18 days, H=19.2 ~490m) from MLS (May 15.29-31p4) and Steward Mt. Lemmon Sta. (May 16.38p3)
K20H05H 2020 HH5 (Q=4.515 AU, arc=27 days, H=19.1 ~513m) from CSS-Kuiper (May 16.39p4 at G=21.6-22.2)
K20H02V 2020 HV2 (Q=4.914 AU, arc=29 days, H=18.9 ~562m) from Steward Mt. Lemmon Sta. (May 16.44-45p4)
K20G03N 2020 GN3 (arc=55 days, H=19.1 ~513m) from PS1 (May 15.31-33p3)
K20G03F 2020 GF3 (arc=42 days, H=19.8 ~371m) from program code "(" (17) via Slooh.com Chile Obs. (May 15.22-23p2)
K20F05K 2020 FK5 from ARO Westfield (April 16.08-10p3 at V=22.1-5)
K20F03W 2020 FW3 (arc=55 days, H=21.2 ~195m) from MLS (May 15.33-35p4)
K20D00Q 2020 DQ (arc=60 days, H=21.4 ~178m) from ARO Westfield (April 16.08-09p2 at V=22.5-6)
K19W06B 2019 WB6 from ARO Westfield (March 7.08-09p6)
K18G04X 2018 GX4 (arc=3 opp, H=19.2 ~490m) from ATLAS Mauna Loa (May 15.43-46p4)
K17M07W 2017 MW7 (arc=4 opp, H=21.2 ~195m) from MLS (May 15.42-44p4 at G=21.5-22.1)
K17F90E 2017 FE90 from ARO Westfield (April 10.24p5)
K17B32E 2017 BE32 (arc=2 opp, H=19.4 ~446m) from Steward Mt. Lemmon Sta. (May 16.14p4)
K16F14Y 2016 FY14 (arc=2 opp, H=19.1 ~513m) from Steward Mt. Lemmon Sta. (May 16.47p4)
K16AE7X 2016 AX147 (arc=4 opp, H=17.8 ~933m) from ATLAS Mauna Loa (May 15.28-30p4)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from the Catalina Sky Survey (CSS) (May 15.35-36p3) and ATLAS Haleakala (May 15.49-53p4)
K10G62W 2010 GW62 (arc=7 opp, H=19.4 ~446m) from MLS (May 15.40-41p4)
K10G25F 2010 GF25 (i=38.5°, q=0.374 AU, arc=4 opp, H=19.1 ~513m) from ARO Westfield (March 26.05-07p3 at V=22.1-5)
K10E43J 2010 EJ43 (arc=4 opp, H=20.9 ~224m) from PS1 (May 15.31-35p4 at w=21.9-22.3)
K07O00Y 2007 OY (arc=2 opp, H=20.8 ~234m) from PS1 (May 15.39-43p3)
K03SF4J 2003 SJ154 (arc=4 opp, H=18.9 ~562m) from PS2 (May 16.28-31p3)
K03M02S 2003 MS2 (arc=3 opp, H=21.1 ~204m) from PS1 (May 15.51-55p4)
K02V85R 2002 VR85 (arc=3 opp, H=20.3 ~295m) from ATLAS Mauna Loa (May 15.48-52p4)
K00WA7M 2000 WM107 (Q=4.085 AU, arc=5 opp, H=18.7 ~616m) from PS1 (May 15.39-43p4 at w=21.6-22.2)
K00K00A 2000 KA from Landehen Obs. (May 14.96-98p5)
K00CA1R 2000 CR101 (arc=4 opp, H=20.2 ~309m) from PS1 (May 15.44-46p3)
q4530 524530 2002 XC91 from ATLAS Haleakala (May 15.35-37p3)
p5446 515446 2013 UG5 from PS1 (May 15.31-34p3)
n9582 499582 2010 TH19 from PS1 (May 15.31-33p3)
n8066 498066 2007 RM133 from ATLAS Mauna Loa (May 15.56-59p4)
n4880 494880 2008 SQ7 from ARO Westfield (April 10.25-27p12)
n4706 494706 2005 GL9 from ATLAS Mauna Loa (May 15.45-47p4)
k8448 468448 2003 LS3 from ARO Westfield (March 26.34-36p3 at V=21.8-22.4)
h6030 436030 2009 JO2 from Whiskey Creek Obs. (May 3.29-33p3 & 12.21-25p3) and ATLAS Haleakala (May 15.45-47p4)
h3992 433992 2000 HD74 from Whiskey Creek Obs. (May 3.30-33p3 & 12.20-24p3) and PS1 (May 15.45-47p3)
d6730 396730 2003 KX16 from ATLAS Mauna Loa (May 15.58-60p4)
b8526 378526 2007 VH186 from ARO Westfield (April 2.09p2 at V=22.0-22.2)
b4188 374188 2005 AD3 from ATLAS Mauna Loa (May 15.27-30p7)
X5758 335758 2007 EM88 from PS1 (May 15.45-48p4)
X3555 333555 2005 VY17 from Transit Dreams Obs. (May 16.22p1)
X1471 331471 1984 QY1 from ATLAS Haleakala (May 15.60-62p4)
V8050 318050 2004 FC32 from Transit Dreams Obs. (May 16.20-21p3)
R6049 276049 2002 CE26 from ARO Westfield (April 16.39p3 at V=21.8-22.1)
R5976 275976 2001 XV10 from PS1 (May 15.31-35p4)
N1792 231792 2000 DH8 from PS1 (May 15.55-59p4)
L8863 218863 2006 WO127 from ATLAS Mauna Loa (May 15.48-52p4)
I6822 186822 2004 FE31 from ATLAS Mauna Loa (May 15.44-46p4)
I4990 184990 2006 KE89 from ATLAS Haleakala (May 15.54p2 & 15.61p1)
H5189 175189 2005 EC224 from ATLAS Mauna Loa (May 15.43-45p4) and Transit Dreams Obs. (May 16.24p3)
G3373 163373 2002 PZ39 from Univ. of Narino Obs. (Feb. 12.04-09p20, 14.01p2 & 15.03p2), LiShan Obs. (Feb. 12.53-54p3), and Castelmartini Obs. (Feb. 15.79p3)
G2004 162004 1991 VE from QOS Obs. (Jan. 14.88p1), Castelmartini Obs. (Jan. 23.83p3 & Feb. 7.75p3), the Zwicky Transient Facility (ZTF) (Jan. 26.14-16p3), Wishing Star Obs. (Jan. 29.96-97p3), and Tentlingen Obs. (Jan. 31.76-79p8 & Feb. 6.80-84p5)
F9929 159929 2005 UK from ATLAS Mauna Loa (May 15.35-38p4) and Transit Dreams Obs. (May 16.08-09p3)
F3315 153315 2001 NH6 from ARO Westfield (April 2.31p2 at V=22.2)
E2781 142781 2002 UM11 from ATLAS Mauna Loa (May 15.48-52p4)
E2555 142555 2002 TB58 from ATLAS Mauna Loa (May 15.38-40p4) and Transit Dreams Obs. (May 16.14-15p3)
E1495 141495 2002 EZ11 from PS2 (May 16.28-30p3)
E1053 141053 2001 XT1 from PS1 (May 15.30-34p4) and ATLAS Mauna Loa (May 15.40-42p4)
D8847 138847 2000 VE62 from Landehen Obs. (May 14.90-93p4)
D7911 137911 2000 AB246 from PS1 (May 15.44-47p3)
D7199 137199 1999 KX4 from CSS (May 15.34-36p4) and ATLAS Haleakala (May 15.41-43p4)
D7064 137064 1998 WP5 from Transit Dreams Obs. (May 16.15-16p3)
D6923 136923 1998 JH2 from ATLAS Mauna Loa (May 15.41-43p4)
D6874 136874 1998 FH74 from Whiskey Creek Obs. (May 3.30-34p3 & 12.21-26p3) and ATLAS Mauna Loa (May 15.54-56p4)
B5052 115052 2003 RD6 from ARO Westfield (April 11.08-09p4)
A6589 106589 2000 WN107 from Landehen Obs. (May 14.91-94p4)
99935 99935 2002 AV4 from Transit Dreams Obs. (May 16.13p3)
86667 86667 2000 FO10 from Steward Mt. Lemmon Sta. (May 12.40p4), Tentlingen Obs. (May 15.91-95p4), and Transit Dreams Obs. (May 16.19-20p3)
85628 85628 1998 KV2 from ATLAS Mauna Loa (May 15.46-47p3) and Tentlingen Obs. (May 15.96-99p4)
85184 85184 1991 JG1 from JPL SynTrack Robotic Telescope (May 13.36-40p3), program code 1 via Kuban State Univ. Obs. (May 13.84-99p119 & 15.77-88p10), Landehen Obs. (May 14.96-98p4), and MLS (May 15.14-16p4)
68350 68350 2001 MK3 from Whiskey Creek Obs. (May 3.29-32p3 & 12.21-26p3) and ATLAS Haleakala (May 15.46-48p4)
68278 68278 2001 FC7 from ATLAS Mauna Loa (May 15.41-43p4)
66407 66407 1999 LQ28 from ATLAS Mauna Loa (May 15.58-59p3)
66251 66251 1999 GJ2 from ATLAS Mauna Loa (May 15.43-46p4)
52768 52768 1998 OR2 from SGT Obs. (April 8.94p1), Castelmartini Obs. (April 25.78p1), Terrassa Obs. (April 25.88p4), Spica Obs. (April 25.93p3), Vulpecula Obs. (April 26.80p1 & 26.96p1), Purple Mtn. Obs. Xuyi Station (April 27.56-58p3 & 28.51p3), San Vito Obs. (April 27.79-80p8), Mirasteilas Obs. (April 27.83-87p2), PMPHR Obs. (April 27.84p2), Linhaceira Obs. (April 27.86p1, 27.91p1, 27.98-02p3, 28.85-88p2 & 29.00p1), Wiggins Obs. (April 28.13-15p18), Huelva Obs. (April 29.01p1), Southern Utsunomiya (April 29.53-58p47), Al Sadeem Obs. (April 29.74p1), and Vegaquattro Obs. (April 29.81-86p4)
40267 40267 1999 GJ4 from AAAA Buenos Aires Obs. (Feb. 13.05-08p2), AHS Obs. (Feb. 16.13p2 & 20.10-11p3), LiShan Obs. (Feb. 16.53-54p14), PASTIS Obs. (Feb. 20.86-87p3), Castelmartini Obs. (Feb. 20.86p3 & 22.82p3), Transit Dreams Obs. (Feb. 22.02-04p5), and QOS Obs. (Feb. 27.88p1)
35107 35107 1991 VH from Transit Dreams Obs. (May 16.10-11p3)
11284 11284 Belenus (1990 BA) from PS1 (May 15.44-47p4)
11066 11066 Sigurd (1992 CC1) from ATLAS Mauna Loa (May 15.33-35p4)
06050 6050 Miwablock (1992 AE) from ATLAS Mauna Loa (May 15.47-49p4)
04954 4954 Eric (1990 SQ) from PS1 (May 15.30-34p4)
02329 2329 Orthos (1976 WA) from SATINO-1 (Feb. 19.06-07p2)
02202 2202 Pele (1972 RA) from ARO Westfield (April 15.37-38p3 at V=22.1-5)
01917 1917 Cuyo (1968 AA) from ATLAS Mauna Loa (May 15.47-52p4)

MPEC 2020-K01 - "01:12 UT" - 2020 JU1

K20J01U 2020 JU1 (Earth MOID=7.4 LD, H=24.4 ~45m, NHATS) was picked up at 0958 UT on 14 May by PS2, observing it at May 14.42-46p4. This detection was confirmed by Great Shefford Obs. (May 15.03-06p3), Schwarzschild Obs. (May 15.04-05p3 & 15.96p3), and Steward Mt. Lemmon Sta. (May 15.30-31p4).

Observers on 16 May '20

A total of 52 observers appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2020-K02 -- 40267
`U71`	AHS Obs., 1 in MPEC 2020-K02 -- 40267
`M43`	Al Sadeem Obs. in Abu Dhabi, 1 in MPEC 2020-K02 -- 52768
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-K07 -- 2020 JY1
`H21`	Astronomical Research Obs. Westfield in Illinois, 13 in MPEC 2020-K02 -- 2020 FK5, 2020 FA7, 2020 DQ, 2019 WB6, 2017 FE90, 2010 GF25, 494880, 468448, 378526, 276049, 153315, 115052, 2202
`T05`	ATLAS Haleakala in Hawaii, 7 in MPEC 2020-K02 -- 2015 FP332, 68350, 524530, 436030, 331471, 184990, 137199
`T08`	ATLAS Mauna Loa in Hawaii, 28 in MPECs 2020-K02 & 2020-K07 -- 2020 JY1, 2020 HT2, 2020 HG9, 2018 GX4, 2016 AX147, 2013 XA22, 2002 VR85, 85628, 68278, 66407, 66251, 498066, 494706, 396730, 374188, 218863, 190166, 186822, 175189, 159929, 142781, 142555, 141053, 136923, 136874, 11066, 6050, 1917
`160`	Castelmartini Obs. in Italy, 4 in MPEC 2020-K02 -- 52768, 40267, 163373, 162004
`703`	Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2020-K02 -- 2015 FP332, 137199
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPEC 2020-K02 -- 2020 JJ1, 2020 HH5
`Z99`	Clixby Obs. in England, 2 in MPECs 2020-K02 & 2020-K07 -- 2020 JY1, 2020 JT1
`K87`	Dettelbach Vineyard Obs. in Germany, 2 in MPEC 2020-K02 -- 2020 JY, 2020 JT1
`J95`	Great Shefford Obs. in England, 4 in MPECs 2020-K01 & 2020-K02 -- 2020 JU1, 2020 JK1, 2020 JF1, 2020 HS6
`A17`	Guidestar Obs. in Germany, 3 in MPECs 2020-K02 & 2020-K07 -- 2020 JY1, 2020 JY, 2020 JP
`J37`	Huelva Obs. in Spain, 1 in MPEC 2020-K02 -- 52768
`U68`	JPL SynTrack Robotic Telescope, 1 in MPEC 2020-K02 -- 85184
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-K02 -- 85184
`Z43`	Landehen Obs., 4 in MPEC 2020-K02 -- 2000 KA, 85184, 138847, 106589
`938`	Linhaceira Obs. in Portugal, 1 in MPEC 2020-K02 -- 52768
`O85`	LiShan Obs., 2 in MPEC 2020-K02 -- 40267, 163373
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-K05 & 2020-K06 -- 2020 JX1, 2020 JV1
`B67`	Mirasteilas Obs. in Switzerland, 1 in MPEC 2020-K02 -- 52768
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2020-K02 & 2020-K03 -- 2020 HW9, 2020 HR9, 2020 FW3, 2020 FA3, 2017 MW7, 2011 JA, 2010 GW62, 85184
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-K07 -- 2020 JY1
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 28 in MPECs 2020-K02, 2020-K03, 2020-K05 & 2020-K06 -- 2020 JX1, 2020 JV1, 2020 JR1, 2020 JM, 2020 HX7, 2020 HQ4, 2020 HM7, 2020 HH6, 2020 GN3, 2019 YW3, 2017 FQ90, 2014 JO25, 2011 JA, 2010 EJ43, 2007 OY, 2003 MS2, 2000 WM107, 2000 CR101, 515446, 499582, 433992, 335758, 275976, 231792, 141053, 137911, 11284, 4954
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-K01, 2020-K02, 2020-K03 & 2020-K07 -- 2020 JY1, 2020 JU1, 2011 JA, 2003 SJ154, 141495
`K63`	Pascoli Obs. in Italy, 1 in MPEC 2020-K07 -- 2020 JY1
`K19`	PASTIS Obs. in France, 1 in MPEC 2020-K02 -- 40267
`K81`	PMPHR Obs., 1 in MPEC 2020-K02 -- 52768
`654`	Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-K05 -- 2020 JV1
`D29`	Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2020-K02 -- 52768
`L18`	QOS Obs., 2 in MPEC 2020-K02 -- 40267, 162004
`233`	San Vito Obs. in Italy, 1 in MPEC 2020-K02 -- 52768
`C95`	SATINO-1 in France, 1 in MPEC 2020-K02 -- 2329
`033`	Schwarzschild Obs. in Germany, 4 in MPECs 2020-K01, 2020-K02, 2020-K05 & 2020-K07 -- 2020 JY1, 2020 JV1, 2020 JU1, 2020 JR1
`L03`	SGT Obs., 1 in MPEC 2020-K02 -- 52768
`W88(`	program code "(" (17) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-K02 -- 2020 GF3
`Q21`	Southern Utsunomiya in Japan, 1 in MPEC 2020-K02 -- 52768
`L39`	Spica Obs., 1 in MPEC 2020-K02 -- 52768
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-K07 -- 2020 JY1
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 30 in MPECs 2020-K01, 2020-K02 & 2020-K05 -- 2020 JY, 2020 JX, 2020 JV1, 2020 JU1, 2020 JT, 2020 JR1, 2020 JR, 2020 JQ1, 2020 JP1, 2020 JO1, 2020 JM1, 2020 JL1, 2020 JK1, 2020 JG1, 2020 JE1, 2020 JC1, 2020 JB1, 2020 JB, 2020 JA1, 2020 HW9, 2020 HV2, 2020 HS6, 2020 HH2, 2020 HG9, 2020 HD7, 2020 HC10, 2020 FA7, 2017 BE32, 2016 FY14, 86667
`A16`	Tentlingen Obs. in Switzerland, 3 in MPEC 2020-K02 -- 86667, 85628, 162004
`C35`	Terrassa Obs. in Spain, 1 in MPEC 2020-K02 -- 52768
`W33`	Transit Dreams Obs., 14 in MPEC 2020-K02 -- 2020 JY, 2020 JP, 2014 JO25, 99935, 86667, 40267, 35107, 333555, 318050, 190166, 175189, 159929, 142555, 137064
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-K04 -- 2018 XA5
`H78`	Univ. of Narino Obs. in Colombia, 1 in MPEC 2020-K02 -- 163373
`K41`	Vegaquattro Obs. in Italy, 1 in MPEC 2020-K02 -- 52768
`G23`	Vulpecula Obs., 1 in MPEC 2020-K02 -- 52768
`V19`	Whiskey Creek Obs., 4 in MPEC 2020-K02 -- 68350, 436030, 433992, 136874
`718`	Wiggins Obs. in Utah, 1 in MPEC 2020-K02 -- 52768
`I15`	Wishing Star Obs. in Rhode Island, 1 in MPEC 2020-K02 -- 162004
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-K02 -- 162004

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

Impact Risk Monitoring on 16 May '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2359 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 JX1	JPL Sentry	2359	2031-2117	29	1.20616603e-05	-4.75	-5.20	0	JPL: Computed at 16:06 today Pacific time based on 11 observations spanning 2.1472 days (2020-May-14.300108 to 2020-May-16.447304). Diameter approximately 0.052 km. from weighted mean H=24.07.

2020 JS1	NEODyS	1700	2022-2105	24	8.88e-07	-6.36	-6.46	0	NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2020-05-13.357 to 2020-05-14.992."

2020 HQ4	JPL Sentry	1700	2059-2120	60	9.337663e-05	-5.26	-5.94	0	JPL: Computed at 07:14 today Pacific time based on 108 observations spanning 23.327 days (2020-Apr-22.14953 to 2020-May-15.476544). Diameter approximately 0.014 km. from weighted mean H=26.91.
2020 HQ4	NEODyS	1700	2051-2118	129	7.76e-05	-5.40	-6.09	0	NEODyS: "Based on 111 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-05-15.477."

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 16 May '20

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

2359	Noted that JPL Sentry has posted 2020 JX1 as an impact risk - see above
2304	Grabbed MPEC 2020-K06 - 2020 JX1 - see above Grabbed MPEC 2020-K07 - 2020 JY1 - see above
2200	Grabbed MPEC 2020-K05 - 2020 JV1 - see above
1700	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 NEODyS has posted 2020 JS1 as an impact risk - see above Grabbed MPEC 2020-K02 - Daily Orbit Update - see above Grabbed MPEC 2020-K03 - 2011 JA - see above Grabbed MPEC 2020-K04 - 2018 XA5 - see above
0430	Grabbed MPEC 2020-K01 - 2020 JU1 - see above

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