2020-06-01 Tracking News

Contents on 1 June '20

IAU Minor Planet Center
- NEOCP Activity -- 44 listings
- New MPECs -- five MPECs
Observers -- 34 observers
Impact Risk Monitoring -- six objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1149 risk-listed objects, 885 have had news in the last 31 days. Updated at 1705 UTC on 1 June.
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 1 June '20

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 30 were "one nighters." So far The Tracking News has counted a total of 56 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 1 June '20

Minor Planet Electronic Circulars

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

MPEC 2020-L01 time-stamped "01:16 UT" - 2020 KK7 - see below
MPEC 2020-L02 time-stamped "12:02 UT" - Daily Orbit Update - see below
MPEC 2020-L03 time-stamped "17:50 UT" - Comet C/2020 K6 (Rankin) - see below
MPEC 2020-L04 time-stamped "19:15 UT" - 2020 KP7 - see below
MPEC 2020-L05 time-stamped "19:17 UT" - 2020 KQ7

MPEC 2020-L05 - "19:17 UT" - 2020 KQ7

K20K07Q 2020 KQ7 (small asteroid, Earth MOID=3.9 LD, H=26.7 ~15m) was picked up at 1221 UT on 31 May by Pan-STARRS 2 (PS2), observing it at May 31.51-55p4. This detection was confirmed by Pan-STARRS 1 (PS1) (May 28.47-50p4) and Steward Obs. Mt. Lemmon Station (June 1.35-36p4).

MPEC 2020-L04 - "19:15 UT" - 2020 KP7

K20K07P 2020 KP7 (borderline-small, H=21.8 ~148m) was picked up at 1312 UT on 30 May by PS1, observing it at May 18.58-60p4 at G=22.4-6 and 30.55-59p7 at w=21.72-22.25. This detection was confirmed by Mt. John Obs. (May 31.69-70p3) and Astronomical Research Obs. Westfield (June 1.35p2).

MPEC 2020-L03 - "17:50 UT" - Comet C/2020 K6 (Rankin)

CK20K060 C/2020 K6 (Rankin) (i=103.8°, q=6.001 AU, TP=2021 Aug. 24.22437 TT) was picked up at 0855 UT on 26 May by the Mt. Lemmon Survey (MLS), observing it at May 26.37-39p4 and 27.41-44p4. This detection was confirmed by Steward Mt. Lemmon Sta. (May 26.44-46p4, 29.41-43p3 & June 1.36-39p4), Mt. John Obs. (May 26.60-61p4), Hidetaka Sato via iTelescope Obs. Siding Spring (May 26.81-82p2), and Schiaparelli Obs. (May 28.04-07p2).

<< DOU on 1 June '20 >> MPEC 2020-L02 - "12:02 UT" - Daily Orbit Update

Observations of risk-listed objects
K06S00C 2006 SC from program code 4 via Plaskett 1.8m Telescope (2006 Sept. 25.31-32p2)
Observations of recently (no longer) risk-listed objects
K20K03O 2020 KO3 (arc=13 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 1.46-47p4)
K20J03C 2020 JC3 (Q=4.116 AU, arc=16 days, H=21.5 ~170m) from Mt. John Obs. (May 31.39-41p3)
K20J01X 2020 JX1 (small asteroid, arc=17 days, H=23.8 ~59m, close passer, NHATS target) from Mt. John Obs. (May 31.32-33p3)
K20J00U 2020 JU (arc=26 days, H=21.1 ~204m, NHATS target) from ATLAS Mauna Loa (May 31.59-61p4) and Mt. John Obs. (May 31.72p5)
Observations of close-passing objects
K20K07B 2020 KB7 (arc=2 days, H=27.7 ~10m, NHATS target) from ATLAS Mauna Loa (May 31.45p2 & 31.49p1), Mt. John Obs. (May 31.51p4), and Great Shefford Obs. (June 1.04p3)
K20K00V 2020 KV from Mt. John Obs. (May 31.31p3)
K20J00R 2020 JR (arc=25 days, H=25.1 ~32m, NHATS target) from Mt. John Obs. (May 31.49-50p4)
K13X22A 2013 XA22 (arc=2 opp, H=22.9 ~89m, NHATS target) from Castelmartini Obs. (May 28.92p3), Tentlingen Obs. (May 29.97-99p4), Northolt Branch Obs. (May 30.96p3), Pin Oak Obs. (May 31.15-22p3), ATLAS Mauna Loa (May 31.39-40p3), Dettelbach Vineyard Obs. (May 31.92-93p3), and Foxfire Village Obs. (June 1.09p3)
Observation campaigns (NHATS targets, radar support)
K20K05R 2020 KR5 (arc=7 days, H=22.3 ~117m, NHATS) from ATLAS Mauna Loa (May 31.52-54p4) and Steward Mt. Lemmon Sta. (June 1.46p3)
K20K04T 2020 KT4 (arc=7 days, H=23.1 ~81m, NHATS) from Mt. John Obs. (May 31.58-59p3)
K20K04D 2020 KD4 (arc=34 days, H=26.2 ~19m, NHATS) from Mt. John Obs. (May 31.45-46p4)
K15R36E 2015 RE36 (NHATS) from the Sloan Digital Sky Survey (SDSS) (2009 Sept. 16.35p2)
02102 2102 Tantalus (1975 YA) (radar) from ATLAS Mauna Loa (May 31.56-57p3 & 31.62p1)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20K07A 2020 KA7 (arc=3 days, H=25.3 ~29m) from ARO Westfield (May 31.14-15p3) and Great Shefford Obs. (May 31.99-01p3)
K20K06S 2020 KS6 (i=49.1°, Q=4.156 AU, arc=4 days, H=22.7 ~98m) from Great Shefford Obs. (May 31.96-98p3)
K20K05N 2020 KN5 (arc=7 days, H=25.3 ~29m) from Mt. John Obs. (May 31.37p4)
K20K05B 2020 KB5 (arc=6 days, H=24.8 ~37m) from Mt. John Obs. (May 31.44-45p4)
K20K04G 2020 KG4 (Q=4.594 AU, arc=9 days, H=25.0 ~34m) from Mt. John Obs. (May 31.53p4), Dettelbach Vineyard Obs. (May 31.99p2), and Steward Mt. Lemmon Sta. (June 1.46p4)
K20K03G 2020 KG3 (arc=28 days, H=23.9 ~56m) from Mt. John Obs. (May 31.38p4)
K20K02B 2020 KB2 (arc=14 days, H=24.6 ~41m) from ARO Westfield (May 31.16-17p3 at V=22.2-4)
K20K00G 2020 KG (arc=19 days, H=24.0 ~54m) from ARO Westfield (May 31.19-21p3 at V=22.2-4)
K20J02G 2020 JG2 (arc=17 days, H=23.2 ~78m) from Steward Mt. Lemmon Sta. (June 1.45p3)
K20J01A 2020 JA1 (arc=18 days, H=26.7 ~15m) from PS1 (May 31.56-59p4 at w=22.00-22.67)
K20H09V 2020 HV9 (arc=36 days, H=22.7 ~98m) from Mt. John Obs. (May 31.43p4)
K20H02T 2020 HT2 (arc=71 days, H=22.4 ~112m) from Mt. John Obs. (May 31.34-35p4)
K20K05E 2020 KE5 (arc=8 days, H=21.9 ~141m) from Mt. John Obs. (May 31.41-43p4)
K20H06H 2020 HH6 (arc=49 days, H=21.9 ~141m) from Mirasteilas Obs. (May 31.95-98p3)
K20A02R 2020 AR2 (arc=148 days, H=21.8 ~148m) from PS1 (May 31.57-59p3 at w=22.16-53)
Observations of other objects
K20K06G 2020 KG6 (q=0.190 AU, arc=5 days, H=19.2 ~490m) from Mt. John Obs. (May 31.35-36p4)
K20K05Q 2020 KQ5 (Q=4.689 AU, arc=7 days, H=20.2 ~309m) from ATLAS Mauna Loa (May 31.43-44p4), Mt. John Obs. (May 31.55-56p3), and Dettelbach Vineyard Obs. (June 1.00-01p3)
K20K04N 2020 KN4 (arc=8 days, H=21.4 ~178m) from ATLAS Mauna Loa (May 31.50-59p4), PS2 (May 31.52-56p6), Dettelbach Vineyard Obs. (June 1.04-06p2), and Steward Mt. Lemmon Sta. (June 1.45-46p4)
K20J03L 2020 JL3 (arc=16 days, H=21.7 ~155m) from Mt. John Obs. (May 31.33-34p4)
K20H10Y 2020 HY10 (arc=73 days, H=20.4 ~282m) from ARO Westfield (May 31.12-14p3 at V=22.0-22.1)
K20H08S 2020 HS8 (arc=36 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 1.46p3)
K17M00E 2017 ME (i=41.4°, arc=3 opp, H=17.9 ~891m) from ATLAS Mauna Loa (May 31.50-58p4) and Dettelbach Vineyard Obs. (June 1.02-04p3)
K17K04T 2017 KT4 (i=46.8°, arc=5 opp, H=17.2 ~1.23 km) from SDSS (2003 March 24.24p3 & 2003 March 26.34p3)
K16V03H 2016 VH3 (i=45.1°, arc=2 opp, H=18.6 ~645m) from SDSS (2001 Nov. 12.30p4 & 2001 Nov. 21.27-28p3)
K16S01G 2016 SG1 (i=36.2°, arc=8 opp, H=17.3 ~1.17 km) from SDSS (2009 Sept. 28.41p2)
K16P08F 2016 PF8 (arc=5 opp, H=21.3 ~186m) from SDSS (2002 Oct. 31.31p3)
K16L11M 2016 LM11 (i=36.5°, arc=3 opp, H=19.0 ~537m) from SDSS (2005 June 4.20p3)
K16H03V 2016 HV3 (arc=3 opp, H=20.0 ~339m) from SDSS (2004 June 14.21-22p3)
K16GM2A 2016 GA222 (arc=3 opp, H=20.0 ~339m) from SDSS (2008 Sept. 24.26p2)
K16F14Y 2016 FY14 (arc=2 opp, H=19.1 ~513m) from ATLAS Mauna Loa (May 31.55-57p4) and PS2 (May 31.57-60p4)
K16CJ4B 2016 CB194 (Q=4.101 AU, arc=6 opp, H=17.6 ~1.02 km) from SDSS (2004 Jan. 31.41p7 & 2004 Feb. 17.34p3)
K16AE7X 2016 AX147 (arc=4 opp, H=17.8 ~933m) from ATLAS Mauna Loa (May 31.27-30p5)
K15XQ1W 2015 XW261 (arc=3 opp, H=21.4 ~178m) from SDSS (2009 Jan. 16.18p3)
K15MB6N 2015 MN116 from SDSS (2009 Jan. 17.06p3)
K15M66N 2015 MN66 (arc=5 opp, H=20.1 ~323m) from SDSS (2000 May 4.36p3 & 2000 May 5.37p3)
K15H10H 2015 HH10 (arc=6 opp, H=18.3 ~741m) from ATLAS Mauna Loa (May 31.56-58p4)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from ATLAS Haleakala (May 31.42-45p5)
K15FS4V 2015 FV284 (arc=2 opp, H=20.8 ~234m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2015 June 17.29p1 at G=24.33)
K15Bp4J 2015 BJ514 (i=60.5°, arc=5 opp, H=17.8 ~933m) from SDSS (2004 March 18.11-12p2)
K14L21W 2014 LW21 (Q=5.412 AU, arc=3 opp, H=18.4 ~708m) from Clixby Obs. (May 31.03-04p4) and ATLAS Mauna Loa (May 31.48-50p4)
K13C36T 2013 CT36 (Q=4.478 AU, arc=4 opp, H=19.1 ~513m) from PS1 (May 31.52-55p4)
K10ED5C 2010 EC135 (arc=3 opp, H=20.3 ~295m) from Castelmartini Obs. (May 28.90-91p3), Tentlingen Obs. (May 30.91-94p4), and Northolt Branch Obs. (May 30.93-95p3)
K09WD9M 2009 WM139 (arc=3 opp, H=18.6 ~645m) from ARO Westfield (May 31.32-34p3 at V=22.3-5)
K09Q36B 2009 QB36 (Q=4.009 AU, arc=6 opp, H=17.8 ~933m) from PS1 (May 31.53-55p3)
K08L16W 2008 LW16 (arc=2 opp, H=20.0 ~339m) from PS2 (May 31.39-41p3)
K07H82X 2007 HX82 (Q=4.101 AU, arc=3 opp, H=20.4 ~282m) from Mirasteilas Obs. (May 31.88-90p3)
K07B29J 2007 BJ29 (q=0.381 AU, arc=3 opp, H=18.8 ~589m) from Tholen 2.24m (2016 April 13.63-64p2)
K06UL6N 2006 UN216 (Q=5.200 AU, arc=2 opp, H=18.9 ~562m) from Guidestar Obs. (2006 Oct. 30.92-97p3)
K06U63D 2006 UD63 (arc=4 opp, H=18.9 ~562m) from ATLAS Mauna Loa (May 31.48-50p4)
K06H00B 2006 HB (arc=4 opp, H=18.9 ~562m) from ATLAS Mauna Loa (May 31.47-48p4) and Dettelbach Vineyard Obs. (June 1.07p2)
K04L03U 2004 LU3 (arc=5 opp, H=18.4 ~708m) from Clixby Obs. (May 31.05-07p5) and ATLAS Mauna Loa (May 31.36-41p4)
K03O03C 2003 OC3 (arc=6 opp, H=18.8 ~589m) from Clixby Obs. (May 31.08-09p3)
K02V85R 2002 VR85 (arc=3 opp, H=20.4 ~282m) from ATLAS Mauna Loa (May 31.38-41p4)
K00W63L 2000 WL63 (arc=5 opp, H=19.8 ~371m) from PS1 (May 31.57-59p3)
p3170 513170 2004 KH15 from ATLAS Mauna Loa (May 31.48-50p4)
o0094 500094 2012 BC20 from PS1 (May 31.39-42p2)
n5615 495615 2015 PQ291 from Tentlingen Obs. (May 30.86-89p3), Pin Oak Obs. (May 31.13-20p3), and ATLAS Mauna Loa (May 31.31-34p4)
n4706 494706 2005 GL9 from ATLAS Mauna Loa (May 31.39-44p4)
l7885 477885 2011 JT9 from Tentlingen Obs. (May 31.01-04p5)
g9094 429094 2009 SG2 from Enrique Solano on Mauna Kea (2009 Oct. 11.33-34p2)
f7816 417816 2007 FA from SDSS (2000 April 27.28-29p4)
f6224 416224 2002 XM90 from PS1 (May 31.56-59p4)
f6151 416151 2002 RQ25 from SDSS (2009 Oct. 15.14-15p4)
f5715 415715 1999 AU23 from PS1 (May 31.58-60p3 at w=21.5-22.1)
f4429 414429 2009 DC43 from SDSS (2002 Nov. 7.31p3)
d6794 396794 2004 KT from SDSS (2003 Sept. 28.21-22p3 & 2009 Jan. 18.10p4)
d2704 392704 2012 AE1 from SDSS (2003 March 31.18-19p3)
c5605 385605 2005 EJ225 from SDSS (2005 Feb. 4.25p4)
Y9063 349063 2006 XA from ATLAS Mauna Loa (May 31.53-54p4)
X1471 331471 1984 QY1 from MASTER IAC Obs. (May 31.07p2 & 31.15p1) and Forti Obs. (May 31.93p5)
V5098 315098 2007 EX from ATLAS Mauna Loa (May 31.27-29p4)
V2956 312956 1997 CZ3 from SDSS (1999 March 22.24p2)
V1321 311321 2005 NP1 from PS2 (May 31.57-60p4)
M8502 228502 2001 TE2 from Solano/Mauna Kea (2010 Sept. 21.49p2)
M2165 222165 2000 AX93 from PS1 (May 31.57-60p4)
I6822 186822 2004 FE31 from Purple Mtn. Obs. Xuyi Station (May 28.60p1)
I4990 184990 2006 KE89 from Pin Oak Obs. (May 31.25-31p3) and ATLAS Haleakala (May 31.47-48p3)
H5189 175189 2005 EC224 from Cherokee Ridge Obs. (May 24.18-25p3, 30.17p1 & 30.22-26p2), Pin Oak Obs. (May 31.14-21p3), and ATLAS Mauna Loa (May 31.34-39p4)
G2566 162566 2000 RJ34 from PS1 (May 31.57-59p3)
G2470 162470 2000 KX43 from ATLAS Mauna Loa (May 31.47-48p4)
F9929 159929 2005 UK from Tentlingen Obs. (May 29.86p3)
F4278 154278 2002 TB9 from PS1 (May 31.28-32p4)
D8852 138852 2000 WN10 from Cormons Obs. (2006 Nov. 29.73-74p2)
D7199 137199 1999 KX4 from Bredenkamp Obs. (May 29.95-96p3 & 30.91-92p3), program code 1 via Kuban State Univ. Obs. (May 30.76-84p67 & 31.77-85p26), and Pin Oak Obs. (May 31.16-23p3)
D6923 136923 1998 JH2 from ATLAS Mauna Loa (May 31.31-34p4)
D6874 136874 1998 FH74 from Tentlingen Obs. (May 30.97-00p4), Pin Oak Obs. (May 31.25-30p3), ATLAS Mauna Loa (May 31.36-37p4), and Forti Obs. (May 31.94-95p3)
A6589 106589 2000 WN107 from Kuban State Univ. Obs./code 1 (May 30.85-92p15) and ATLAS Haleakala (May 31.26-29p4)
90147 90147 2002 YK14 from PS1 (May 31.57-59p3)
90075 90075 2002 VU94 from ATLAS Mauna Loa (May 31.27-29p4)
85989 85989 1999 JD6 from ATLAS Mauna Loa (May 31.55-57p4)
68350 68350 2001 MK3 from the Zwicky Transient Facility (ZTF) (May 31.29p1 & 31.40p1) and PS2 (May 31.43-46p4)
68348 68348 2001 LO7 from ATLAS Mauna Loa (May 31.42-43p4)
66407 66407 1999 LQ28 from ATLAS Mauna Loa (May 31.47-50p6)
66251 66251 1999 GJ2 from Xuyi Sta. (May 28.57-60p3) and ATLAS Mauna Loa (May 31.33-35p4)
54789 54789 2001 MZ7 from ATLAS Mauna Loa (May 31.55-57p4)
54401 54401 2000 LM from ATLAS Mauna Loa (May 31.31-33p4)
52768 52768 1998 OR2 from ROCG (May 31.15-18p3)
35396 35396 1997 XF11 from Solano/Mauna Kea (2009 June 23.28-29p2)
19764 19764 2000 NF5 from ATLAS Mauna Loa (May 31.57-62p5)
11066 11066 Sigurd (1992 CC1) from ATLAS Mauna Loa (May 31.29-31p4)
08014 8014 1990 MF from Castelmartini Obs. (May 28.93p3), Northolt Branch Obs. (May 30.97p3), Pin Oak Obs. (May 31.24-29p3), and ATLAS Mauna Loa (May 31.37-40p4)
07977 7977 1977 QQ5 from ATLAS Mauna Loa (May 31.46-48p4)
06050 6050 Miwablock (1992 AE) from ATLAS Mauna Loa (May 31.36-38p4)
05751 5751 Zao (1992 AC) from ATLAS Mauna Loa (May 31.53-54p4)
05693 5693 1993 EA from SATINO-1 (2019 March 16.10-12p4)
05011 5011 Ptah (6743 P-L) from PS1 (May 31.57-60p4)
01917 1917 Cuyo (1968 AA) from ATLAS Mauna Loa (May 31.40-44p4)
01685 1685 Toro (1948 OA) from ATLAS Mauna Loa (May 31.57-62p5)

MPEC 2020-L01 - "01:16 UT" - 2020 KK7

K20K07K 2020 KK7 (risk listed, Earth MOID=1.3 LD, H=26.31 ~19m, close passer) was picked up at 0722 UT on 25 May by MLS, observing it at May 25.31-32p3. This detection was confirmed by PS1 (May 16.32-36p7 at G=22.1-23.0), PS2 (May 20.42-44p3 at G=22.4 & 24.40-43p7 at G=21.0-22.6), ATLAS Mauna Loa (May 31.38-41p4), and Great Shefford Obs. (May 31.94-96p6 & June 1.03-04p3).

Observers on 1 June '20

A total of 34 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-L02 & 2020-L04 -- 2020 KP7, 2020 KG, 2020 KB2, 2020 KA7, 2020 HY10, 2009 WM139
`T05`	ATLAS Haleakala in Hawaii, 3 in MPEC 2020-L02 -- 2015 FP332, 184990, 106589
`T08`	ATLAS Mauna Loa in Hawaii, 41 in MPECs 2020-L01 & 2020-L02 -- 2020 KR5, 2020 KQ5, 2020 KN4, 2020 KK7, 2020 KB7, 2020 JU, 2017 ME, 2016 FY14, 2016 AX147, 2015 HH10, 2014 LW21, 2013 XA22, 2006 UD63, 2006 HB, 2004 LU3, 2002 VR85, 90075, 85989, 68348, 66407, 66251, 54789, 54401, 513170, 495615, 494706, 349063, 315098, 19764, 175189, 162470, 136923, 136874, 11066, 8014, 7977, 6050, 5751, 2102, 1917, 1685
`L65`	Bredenkamp Obs., 1 in MPEC 2020-L02 -- 137199
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 8014
`V94`	Cherokee Ridge Obs., 1 in MPEC 2020-L02 -- 175189
`Z99`	Clixby Obs. in England, 3 in MPEC 2020-L02 -- 2014 LW21, 2004 LU3, 2003 OC3
`A94`	Cormons Obs. in Italy, 1 in MPEC 2020-L02 -- 138852
`K87`	Dettelbach Vineyard Obs. in Germany, 6 in MPEC 2020-L02 -- 2020 KQ5, 2020 KN4, 2020 KG4, 2017 ME, 2013 XA22, 2006 HB
`K83`	Forti Obs., 2 in MPEC 2020-L02 -- 331471, 136874
`W46`	Foxfire Village Obs., 1 in MPEC 2020-L02 -- 2013 XA22
`J95`	Great Shefford Obs. in England, 4 in MPECs 2020-L01 & 2020-L02 -- 2020 KS6, 2020 KK7, 2020 KB7, 2020 KA7
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2020-L02 -- 2006 UN216
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-L03 -- C/2020 K6
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-L02 -- 137199, 106589
`Z22`	MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-L02 -- 331471
568`	Enrique Solano in Spain on Mauna Kea in Hawaii, 3 in MPEC 2020-L02 -- 429094, 35396, 228502
`B67`	Mirasteilas Obs. in Switzerland, 2 in MPEC 2020-L02 -- 2020 HH6, 2007 HX82
`474`	Mt. John Obs. in New Zealand, 20 in MPECs 2020-L02, 2020-L03 & 2020-L04 -- 2020 KV, 2020 KT4, 2020 KQ5, 2020 KP7, 2020 KN5, 2020 KG6, 2020 KG4, 2020 KG3, 2020 KE5, 2020 KD4, 2020 KB7, 2020 KB5, C/2020 K6, 2020 JX1, 2020 JU, 2020 JR, 2020 JL3, 2020 JC3, 2020 HV9, 2020 HT2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2020-L01 & 2020-L03 -- 2020 KK7, C/2020 K6
`Z80`	Northolt Branch Obs. in England, 3 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 8014
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2020-L01, 2020-L02, 2020-L04 & 2020-L05 -- 2020 KQ7, 2020 KP7, 2020 KK7, 2020 JA1, 2020 AR2, 2013 CT36, 2009 QB36, 2000 WL63, 90147, 500094, 416224, 415715, 222165, 162566, 154278, 5011
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 7 in MPECs 2020-L01, 2020-L02 & 2020-L05 -- 2020 KQ7, 2020 KN4, 2020 KK7, 2016 FY14, 2008 LW16, 68350, 311321
`V93`	Pin Oak Obs., 7 in MPEC 2020-L02 -- 2013 XA22, 495615, 184990, 175189, 137199, 136874, 8014
`6584`	program code 4 via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-L02 -- 2006 SC
`D29`	Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2020-L02 -- 66251, 186822
`Y16`	ROCG, 1 in MPEC 2020-L02 -- 52768
`C95`	SATINO-1 in France, 1 in MPEC 2020-L02 -- 5693
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2020-L03 -- C/2020 K6
`645`	Sloan Digital Sky Survey (SDSS) in New Mexico, 20 in MPEC 2020-L02 -- 2017 KT4, 2016 VH3, 2016 SG1, 2016 PF8, 2016 LM11, 2016 HV3, 2016 GA222, 2016 CB194, 2015 XW261, 2015 RE36, 2015 MN66, 2015 MN116, 2015 BJ514, 417816, 416151, 414429, 396794, 392704, 385605, 312956
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 8 in MPECs 2020-L02, 2020-L03 & 2020-L05 -- 2020 KR5, 2020 KQ7, 2020 KO3, 2020 KN4, 2020 KG4, C/2020 K6, 2020 JG2, 2020 HS8
`A16`	Tentlingen Obs. in Switzerland, 6 in MPEC 2020-L02 -- 2013 XA22, 2010 EC135, 495615, 477885, 159929, 136874
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2020-L02 -- 2015 FV284, 2007 BJ29
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-L02 -- 68350

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

Impact Risk Monitoring on 1 June '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 KK7	NEODyS	1703	2115	1	6.6e-09	-8.99	-8.99	0	NEODyS: "Based on 33 optical observations (of which 1 are rejected as outliers) from 2020-05-16.325 to 2020-06-01.040."

2020 KC5	JPL Sentry	1600	2083-2106	3	1.96446e-05	-6.08	-6.09	0	JPL: Computed at 06:30 May 31st Pacific time based on 44 observations spanning 3.6988 days (2020-May-26.365344 to 2020-May-30.064179). Diameter approximately 0.011 km. from weighted mean H=27.35.

2019 KY3	JPL Sentry	1600	2101-2110	2	2.1302e-07	-7.50	-7.54	0	JPL: Computed at 06:59 Dec. 16th of 2019 Pacific time based on 41 observations spanning 6.9110 days (2019-May-25.379332 to 2019-Jun-01.29035). Diameter approximately 0.016 km. from weighted mean H=26.59.

2018 LB	JPL Sentry	1600	2092-2116	11	3.61698e-06	-6.28	-6.80	0	JPL: Computed at 19:49 June 3rd of 2018 Pacific time based on 33 observations spanning .97953 days (2018-Jun-01.16813 to 2018-Jun-02.147665). Diameter approximately 0.022 km. from weighted mean H=25.99.

2015 KH158	JPL Sentry	1600	2043-2115	18	6.10736e-08	-7.65	-7.99	0	JPL: Computed at 07:36 April 9th of 2017 Pacific time based on 10 observations spanning 1.0122 days (2015-May-23.15043 to 2015-May-24.16259). Diameter approximately 0.021 km. from weighted mean H=26.00.

2006 SC	NEODyS	1703	2047-2106	5	1.02e-05	-5.06	-5.06	0	NEODyS: "Based on 113 optical observations (of which 9 are rejected as outliers) from 2006-09-16.247 to 2006-10-13.404."
2006 SC	JPL Sentry	1600	2043-2109	8	1.632894e-06	-5.80	-5.94	0	JPL: Computed at 06:38 today Pacific time based on 107 observations spanning 27.157 days (2006-Sep-16.24646 to 2006-Oct-13.403084). Diameter approximately 0.031 km. from weighted mean H=25.22.

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 1 June '20

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

2101	Grabbed MPEC 2020-L04 - 2020 KP7 - see above Grabbed MPEC 2020-L05 - 2020 KQ7 - see above
1805	Grabbed MPEC 2020-L03 - Comet C/2020 K6 (Rankin) - see above
1703	Noted that NEODyS has updated its 2006 SC risk assessment - see above Noted that NEODyS has posted 2020 KK7 as an impact risk - see above
1600	Noted that JPL Sentry has updated its 2006 SC risk assessment - see above Noted that JPL Sentry has updated its 2015 KH158 risk assessment - see above Noted that JPL Sentry has updated its 2018 LB risk assessment - see above Noted that JPL Sentry has updated its 2019 KY3 risk assessment - see above Noted that JPL Sentry has updated its 2020 KC5 risk assessment - see above Grabbed MPEC 2020-L02 - Daily Orbit Update - see above
0517	Grabbed MPEC 2020-L01 - 2020 KK7 - see above

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