Contents  on 19 August '20

Asteroid/Comet Connection (A/CC) Resources:

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

Radar Astrometry  on 19 August '20

Radar observation of five objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 1900 UTC when the database was dated 18 Aug.


Data update noted at 2231 UTC when the database was dated 19 Aug.



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 19 August '20

The MPC's NEO Confirmation Page has 93 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 93 objects listed. Of these, 52 were "one nighters." So far The Tracking News has counted a total of 149 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 19 August '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been 28 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-Q108 - "23:48 UT" - 2020 QY1


MPEC 2020-Q107 - "23:44 UT" - 2020 QX1


MPEC 2020-Q106 - "22:32 UT" - 2020 QV1


MPEC 2020-Q105 - "22:31 UT" - 2020 ME5


MPEC 2020-Q104 - "21:25 UT" - 2020 QU1


MPEC 2020-Q103 - "21:22 UT" - 2020 QT1


MPEC 2020-Q102 - "21:19 UT" - 2020 QS1


MPEC 2020-Q101 - "20:18 UT" - 2020 QR1


MPEC 2020-Q100 - "17:58 UT" - 2012 YK7


MPEC 2020-Q99 - "15:00 UT" - 2013 VZ9


<< DOU on 19 August '20 >>  MPEC 2020-Q98 - "12:10 UT" - Daily Orbit Update


MPEC 2020-Q97 - "11:56 UT" - 2020 QP1


MPEC 2020-Q96 - "11:55 UT" - 2020 QO1


MPEC 2020-Q95 - "11:34 UT" - 2020 QN1


MPEC 2020-Q94 - "11:33 UT" - 2020 QM1


MPEC 2020-Q93 - "07:42 UT" - 2020 QL1


MPEC 2020-Q92 - "06:41 UT" - 2020 QK1


MPEC 2020-Q91 - "06:37 UT" - 2020 QJ1


MPEC 2020-Q90 - "06:29 UT" - 2020 QG1


MPEC 2020-Q89 - "06:28 UT" - 2020 QF1


MPEC 2020-Q88 - "06:25 UT" - 2020 PR6


MPEC 2020-Q87 - "06:22 UT" - 2020 QE1


MPEC 2020-Q86 - "06:19 UT" - 2020 QD1


MPEC 2020-Q85 - "01:31 UT" - 2020 QY


MPEC 2020-Q84 - "01:24 UT" - 2020 PO6


MPEC 2020-Q83 - "01:22 UT" - 2020 PN6


MPEC 2020-Q82 - "01:08 UT" - 2020 QX


MPEC 2020-Q81 - "01:06 UT" - 2020 QW

Observers  on 19 August '20

A total of 49 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-Q98 -- 2020 PR3
251Arecibo in Puerto Rico, 5 in radar -- 2016 YO3, 2006 NL, 2004 XP14, 2002 BF25, 8014
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2020-Q81, 2020-Q82, 2020-Q87, 2020-Q94, 2020-Q95, 2020-Q98, 2020-Q102, 2020-Q103, 2020-Q106 & 2020-Q108 -- 2020 QY1, 2020 QX, 2020 QW, 2020 QV1, 2020 QT1, 2020 QS1, 2020 QN1, 2020 QM1, 2020 QE1, 2020 PR2
T05ATLAS Haleakala in Hawaii, 44 in MPECs 2020-Q85, 2020-Q94 & 2020-Q98 -- 2020 QY, 2020 QM1, 2020 PX3, 2020 PQ2, 2020 PM4, 2020 OQ2, 2020 OJ2, 2020 NM1, 2020 MC4, 2020 LB3, 2020 LA2, 2019 PZ2, 2019 NC1, 2019 AN5, 2016 PL1, 2016 NV38, 2016 ED85, 2014 QL433, 2014 NE64, 2014 LW21, 2013 UX14, 2013 TV144, 2011 FY2, 2009 PQ1, 2007 VX137, 2007 CH15, 2006 UD63, 2006 HB, 2005 QS10, 2003 BK47, 2002 JS2, 85804, 66008, 65690, 500094, 497135, 477492, 382625, 308043, 23187, 162980, 162173, 136900, 3752
T08ATLAS Mauna Loa in Hawaii, 46 in MPECs 2020-Q85, 2020-Q98 & 2020-Q105 -- 2020 QY, 2020 QJ, 2020 QH, 2020 OW3, 2020 OK5, 2020 OJ2, 2020 OA2, 2020 NA, 2020 ME5, 2020 MC4, 2020 LJ2, 2020 LB3, 2020 LA2, 2020 HS8, 2019 PZ2, 2019 AN5, 2016 PL1, 2016 AX147, 2014 NE64, 2014 LW21, 2013 UX14, 2013 TV144, 2011 QG9, 2009 PQ1, 2007 VX137, 2006 UD63, 2006 HB, 2002 JS2, 86829, 54789, 517103, 505657, 503960, 498066, 468730, 431775, 376707, 361123, 285567, 20826, 163014, 159402, 137799, 5645, 3908, 3691
C77Bernezzo Obs. in Italy, 2 in MPECs 2020-Q81 & 2020-Q94 -- 2020 QW, 2020 QM1
U63Burnt Tree Hill Obs., 1 in MPEC 2020-Q98 -- 136900
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2020-Q98 -- 2020 OG4, 2020 KN2, 2020 HQ4, 2020 GB1, 2020 DK, 2020 DF3
Z99Clixby Obs. in England, 1 in MPEC 2020-Q81 -- 2020 QW
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-Q94 -- 2020 QM1
958Dax Obs. in France, 1 in MPEC 2020-Q81 -- 2020 QW
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 13 in MPECs 2020-Q81, 2020-Q82, 2020-Q86, 2020-Q89, 2020-Q90, 2020-Q94, 2020-Q96, 2020-Q98 & 2020-Q99 -- 2020 QX, 2020 QW, 2020 QO1, 2020 QM1, 2020 QJ, 2020 QG1, 2020 QF1, 2020 QD1, 2020 PT4, 2020 PG6, 2020 PB1, 2020 OM3, 2013 VZ9
734Farpoint Obs. in Kansas, 8 in MPECs 2020-Q82, 2020-Q93, 2020-Q94, 2020-Q96, 2020-Q98 & 2020-Q108 -- 2020 QY1, 2020 QX, 2020 QW, 2020 QO1, 2020 QM1, 2020 QL1, 2020 NM1, 2020 LR
K83Forti Obs., 2 in MPECs 2020-Q81 & 2020-Q98 -- 2020 QW, 2020 PY2
L34Galhassin Robotic Telescope, 1 in MPEC 2020-Q81 -- 2020 QW
E94Gisborne Obs. in New Zealand, 1 in MPEC 2020-Q98 -- 2020 OS7
J95Great Shefford Obs. in England, 2 in MPECs 2020-Q81 & 2020-Q85 -- 2020 QY, 2020 QW
K78Iota Scorpii Obs., 1 in MPEC 2020-Q98 -- 2003 BK47
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-Q88 -- 2020 PR6
U68JPL SynTrack Robotic Telescope, 2 in MPEC 2020-Q98 -- 2020 PT2, 2020 OQ6
K85Kelmis Obs., 1 in MPEC 2020-Q98 -- 85275
381Kiso Obs. in Japan, 1 in MPEC 2020-Q81 -- 2020 QW
246KLENOT in the Czech Republic, 2 in MPECs 2020-Q106 & 2020-Q108 -- 2020 QY1, 2020 QV1
W92MASTER OAFA Obs., 1 in MPEC 2020-Q98 -- 54789
568^R. Wainscoat on Mauna Kea in Hawaii, 6 in MPECs 2020-Q83, 2020-Q90, 2020-Q92, 2020-Q98, 2020-Q101 & 2020-Q103 -- 2020 QT1, 2020 QR1, 2020 QK1, 2020 QG1, 2020 PY2, 2020 PN6
711McDonald Obs. in Texas, 1 in MPEC 2020-Q82 -- 2020 QX
G96Mt. Lemmon Survey (MLS) in Arizona, 54 in MPECs 2020-Q83, 2020-Q86, 2020-Q87, 2020-Q89, 2020-Q91, 2020-Q93, 2020-Q95, 2020-Q96, 2020-Q97, 2020-Q98, 2020-Q100 & 2020-Q104 -- 2020 QU1, 2020 QP1, 2020 QO1, 2020 QN1, 2020 QL1, 2020 QJ1, 2020 QF1, 2020 QE1, 2020 QD1, 2020 PV1, 2020 PN6, 2020 PF, 2020 PB1, 2020 OY5, 2020 OY3, 2020 OW6, 2020 OV6, 2020 OU4, 2020 OR, 2020 OM3, 2020 OA4, 2020 NC1, 2020 NA, 2020 MZ3, 2020 MP, 2020 LJ2, 2020 LE2, 2020 KN2, 2020 FA1, 2020 DF3, 2019 OH1, 2016 ED85, 2016 CB32, 2014 QL433, 2014 LQ26, 2013 LV28, 2013 AO60, 2012 YK7, 2012 RO1, 2012 PA, 2007 SW2, 2006 UD63, 2003 AY2, 87311, 489235, 476438, 408982, 408752, 407338, 354952, 27002, 23714, 136849, 106538
J69North Obs. in England, 2 in MPECs 2020-Q85 & 2020-Q98 -- 2020 QY, 2020 PS
Z80Northolt Branch Obs. in England, 4 in MPECs 2020-Q81 & 2020-Q98 -- 2020 QW, 2020 PQ2, 2019 AN5, 2016 NV38
F51Pan-STARRS 1 (PS1) in Hawaii, 85 in MPECs 2020-Q82, 2020-Q83, 2020-Q84, 2020-Q86, 2020-Q87, 2020-Q90, 2020-Q91, 2020-Q92, 2020-Q95, 2020-Q98, 2020-Q100, 2020-Q101, 2020-Q102, 2020-Q103, 2020-Q104, 2020-Q105, 2020-Q106, 2020-Q107 & 2020-Q108 -- 2020 QY1, 2020 QX1, 2020 QX, 2020 QV1, 2020 QU1, 2020 QU, 2020 QT1, 2020 QT, 2020 QS1, 2020 QR1, 2020 QN1, 2020 QN, 2020 QK1, 2020 QJ1, 2020 QG1, 2020 QE1, 2020 QD1, 2020 PZ, 2020 PY1, 2020 PX1, 2020 PU1, 2020 PQ3, 2020 PO6, 2020 PN6, 2020 PM2, 2020 PH2, 2020 PF5, 2020 PF1, 2020 PE6, 2020 PC4, 2020 PB5, 2020 PA5, 2020 PA1, 2020 OX6, 2020 OW6, 2020 OS7, 2020 ON1, 2020 OM3, 2020 OM1, 2020 OL, 2020 OK1, 2020 OH4, 2020 OG6, 2020 OG, 2020 OF7, 2020 OB6, 2020 OA2, 2020 NF, 2020 MR, 2020 ME5, 2020 LK2, 2020 LE2, 2020 LB3, 2020 KS1, 2020 HV1, 2019 GG20, 2018 XA5, 2015 XK351, 2015 NU13, 2015 NJ24, 2013 TV144, 2013 RF36, 2012 YK7, 2012 BS23, 2011 UG21, 2011 QG9, 2010 PM9, 2010 BB3, 2009 UE2, 2009 SN98, 2009 QN5, 2008 XE2, 2007 DB56, 2006 UD63, 2006 TU7, 2006 SA7, 2005 SH26, 2005 GZ110, 2004 TP1, 2004 MD, 429746, 27002, 136849, 8035, 4688
F52Pan-STARRS 2 (PS2) in Hawaii, 63 in MPECs 2020-Q82, 2020-Q84, 2020-Q90, 2020-Q92, 2020-Q93, 2020-Q94, 2020-Q98, 2020-Q100 & 2020-Q108 -- 2020 QY1, 2020 QX, 2020 QU, 2020 QT, 2020 QN, 2020 QM1, 2020 QM, 2020 QL1, 2020 QK1, 2020 QH, 2020 QG1, 2020 PX1, 2020 PV1, 2020 PS3, 2020 PO6, 2020 PK2, 2020 PG6, 2020 PF5, 2020 PD1, 2020 OX6, 2020 OV6, 2020 OU4, 2020 OT, 2020 OR7, 2020 OK7, 2020 OK5, 2020 OG6, 2020 OA2, 2020 NF, 2020 NC1, 2020 MP, 2020 MF2, 2020 MC4, 2020 MA4, 2020 LZ1, 2020 LJ2, 2020 LE2, 2020 LA2, 2020 KS1, 2020 JZ15, 2020 HV1, 2019 OH1, 2019 GG20, 2019 AN5, 2018 EE4, 2017 UP2, 2016 RU, 2016 CN246, 2015 PS57, 2015 PD, 2014 VM, 2014 QL390, 2013 TV144, 2013 LV28, 2013 AO60, 2012 YK7, 2010 PM9, 2010 BB3, 2009 SN98, 86666, 173689, 163250, 4197
K63Pascoli Obs. in Italy, 2 in MPECs 2020-Q81 & 2020-Q108 -- 2020 QY1, 2020 QW
V93Pin Oak Obs., 6 in MPEC 2020-Q98 -- 503960, 500094, 354952, 137108, 105140, 3691
D29Purple Mtn. Obs. Xuyi Station in China, 25 in MPEC 2020-Q98 -- 2020 PY2, 2020 PC3, 2020 OV6, 2020 OR, 2020 OA4, 2020 NF, 2020 LJ2, 2016 ED85, 2012 RO1, 2012 PA, 2005 QS10, 69230, 65803, 470678, 407653, 315020, 221980, 19764, 18736, 163081, 140288, 137120, 136900, 115052, 2201
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2020-Q81, 2020-Q85, 2020-Q89, 2020-Q94 & 2020-Q108 -- 2020 QY1, 2020 QY, 2020 QW, 2020 QM1, 2020 QF1
H36Sandlot Obs. in Kansas, 5 in MPECs 2020-Q82, 2020-Q94, 2020-Q98 & 2020-Q106 -- 2020 QX, 2020 QW, 2020 QV1, 2020 QM1, 2020 QL1
C95SATINO-1 in France, 3 in MPECs 2020-Q81, 2020-Q94 & 2020-Q98 -- 2020 QW, 2020 QM1, 2011 GO27
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-Q81 & 2020-Q98 -- 2020 QW, 2020 PQ2
033Schwarzschild Obs. in Germany, 21 in MPECs 2020-Q81, 2020-Q85, 2020-Q86, 2020-Q87, 2020-Q89, 2020-Q91, 2020-Q93, 2020-Q94, 2020-Q95, 2020-Q96, 2020-Q97, 2020-Q98, 2020-Q102, 2020-Q103, 2020-Q104, 2020-Q106 & 2020-Q108 -- 2020 QY1, 2020 QY, 2020 QW, 2020 QV1, 2020 QU1, 2020 QT1, 2020 QS1, 2020 QP1, 2020 QO1, 2020 QN1, 2020 QM1, 2020 QL1, 2020 QJ1, 2020 QF1, 2020 QE1, 2020 QD1, 2020 PY2, 2020 PS, 2020 PQ2, 2020 PE3, 2020 OT
Y00SONEAR in Brazil, 1 in MPEC 2020-Q98 -- 85275
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-Q81 & 2020-Q94 -- 2020 QW, 2020 QM1
I93St. Pardon de Conques Obs. in France, 7 in MPECs 2020-Q81, 2020-Q82, 2020-Q89, 2020-Q93, 2020-Q94, 2020-Q106 & 2020-Q108 -- 2020 QY1, 2020 QX, 2020 QW, 2020 QV1, 2020 QM1, 2020 QL1, 2020 QF1
I52Steward Obs. Mt. Lemmon Station in Arizona, 25 in MPECs 2020-Q81, 2020-Q82, 2020-Q86, 2020-Q87, 2020-Q89, 2020-Q93, 2020-Q94, 2020-Q96, 2020-Q97, 2020-Q98, 2020-Q100, 2020-Q106 & 2020-Q108 -- 2020 QY1, 2020 QX, 2020 QW, 2020 QV1, 2020 QP1, 2020 QP, 2020 QO1, 2020 QM1, 2020 QL1, 2020 QJ, 2020 QH, 2020 QF1, 2020 QF, 2020 QE1, 2020 QD1, 2020 PZ2, 2020 PS3, 2020 PR2, 2020 PQ2, 2020 PP4, 2020 PM4, 2020 PH3, 2020 OG4, 2020 MR, 2012 YK7
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 1 in MPEC 2020-Q82 -- 2020 QX
W33Transit Dreams Obs., 1 in MPEC 2020-Q98 -- 2020 PL2
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-Q81, 2020-Q82, 2020-Q85, 2020-Q94 & 2020-Q108 -- 2020 QY1, 2020 QY, 2020 QX, 2020 QW, 2020 QM1
C51WISE in Earth polar orbit, 4 in MPECs 2020-Q88 & 2020-Q98 -- 2020 PR6, 2020 MZ3, 2016 FY14, 1998 MR24
N88Xingming Obs. #3, 1 in MPEC 2020-Q81 -- 2020 QW
I41Zwicky Transient Facility (ZTF) in southern California, 12 in MPEC 2020-Q98 -- 2020 OW3, 2020 OA1, 2020 MC4, 2016 FY14, 420302, 419022, 357058, 163902, 15817, 138847, 108906, 4503
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 August '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 QN1JPL Sentry17052092-21201061.00862441e-05-4.52-5.280JPL: Computed at 06:15 today Pacific time based on 12 observations spanning 8.8615 days (2020-Aug-10.44627 to 2020-Aug-19.307758). Diameter approximately 0.079 km. from weighted mean H=23.16.
2020 QF1NEODyS17062082-210233.28e-05-6.44-6.440NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2020-08-18.269 to 2020-08-18.969."
JPL Sentry17052102-210212.692e-05-6.51-6.510JPL: Computed at 00:28 today Pacific time based on 21 observations spanning .70007 days (2020-Aug-18.26807 to 2020-Aug-18.968137). Diameter approximately 0.006 km. from weighted mean H=28.64.
2020 QCJPL Sentry17052038-204128.7579e-06-5.67-5.690JPL: Computed at 06:52 Aug. 18th Pacific time based on 23 observations spanning 1.6279 days (2020-Aug-16.479449 to 2020-Aug-18.10731). Diameter approximately 0.011 km. from weighted mean H=27.49.
2020 PJ6NEODyS00052066-2101107.25e-07-6.75-7.080NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-08-15.448 to 2020-08-18.154."
2020 PG6JPL Sentry17052029-2048110.0019505957-3.12-3.130JPL: Computed at 09:33 today Pacific time based on 15 observations spanning 5.5874 days (2020-Aug-13.327531 to 2020-Aug-18.914962). Diameter approximately 0.013 km. from weighted mean H=27.01.
2020 PT2JPL Sentry17052070-207011.579e-09-9.49-9.490JPL: Computed at 09:15 today Pacific time based on 38 observations spanning 5.0852 days (2020-Aug-12.332027 to 2020-Aug-17.41721). Diameter approximately 0.020 km. from weighted mean H=26.18.
2020 PQ2JPL Sentry17052066-206614.682e-07-5.78-5.780JPL: Computed at 08:55 today Pacific time based on 62 observations spanning 10.943 days (2020-Aug-08.477485 to 2020-Aug-19.4205). Diameter approximately 0.044 km. from weighted mean H=24.45.
2020 PU1JPL Sentry17052047-207031.2882e-06-6.66-7.020JPL: Computed at 08:36 today Pacific time based on 27 observations spanning 5.6038 days (2020-Aug-12.505525 to 2020-Aug-18.10933). Diameter approximately 0.017 km. from weighted mean H=26.49.
2020 PB1JPL Sentry17052057-206024.621e-09-6.42-6.580JPL: Computed at 09:33 today Pacific time based on 23 observations spanning 17.617 days (2020-Jul-30.494885 to 2020-Aug-17.112243). Diameter approximately 0.210 km. from weighted mean H=21.04.
2020 OY5JPL Sentry17052063-208141.4452e-06-5.00-5.390JPL: Computed at 08:35 today Pacific time based on 95 observations spanning 20.481 days (2020-Jul-26.44649 to 2020-Aug-15.927554). Diameter approximately 0.062 km. from weighted mean H=23.70.
2020 KN2JPL Sentry17052063-2120114.0445363e-05-5.11-5.120JPL: Computed at 09:03 today Pacific time based on 76 observations spanning 20.114 days (2020-May-14.26832 to 2020-Jun-03.38263). Diameter approximately 0.018 km. from weighted mean H=26.37.
2020 HQ4JPL Sentry17052051-2119477.264624e-05-5.40-6.070JPL: Computed at 08:43 today Pacific time based on 120 observations spanning 27.265 days (2020-Apr-22.14953 to 2020-May-19.414065). Diameter approximately 0.014 km. from weighted mean H=26.97.
2020 GB1JPL Sentry17052049-2116162.764151e-05-5.45-5.570JPL: Computed at 08:48 today Pacific time based on 131 observations spanning 4.4348 days (2020-Apr-02.534924 to 2020-Apr-06.969728). Diameter approximately 0.014 km. from weighted mean H=26.92.
2020 FA1JPL Sentry17052100-211950.00012960667-5.05-5.510JPL: Computed at 08:35 today Pacific time based on 69 observations spanning 92.784 days (2020-Mar-16.47938 to 2020-Jun-17.263335). Diameter approximately 0.019 km. from weighted mean H=26.28.
2020 DF3JPL Sentry17052067-208132.4111e-06-4.83-5.120JPL: Computed at 08:35 today Pacific time based on 80 observations spanning 20.801 days (2020-Feb-24.44469 to 2020-Mar-16.24531). Diameter approximately 0.050 km. from weighted mean H=24.17.
2020 DKJPL Sentry17052089-2119212.203872e-05-5.41-6.170JPL: Computed at 09:05 today Pacific time based on 51 observations spanning 4.8949 days (2020-Feb-16.30651 to 2020-Feb-21.20142). Diameter approximately 0.021 km. from weighted mean H=26.03.
2015 ME131JPL Sentry17052021-2089973.08443e-08-3.70-4.260JPL: Computed at 11:21 April 8th of 2017 Pacific time based on 6 observations spanning 1.8406 days (2015-Jun-23.58462 to 2015-Jun-25.42522). Diameter approximately 0.498 km. from weighted mean H=19.16.
2010 CK19JPL Sentry17052089-211674.39578e-06-7.17-7.730JPL: Computed at 15:39 April 8th of 2017 Pacific time based on 33 observations spanning 2.1365 days (2010-Feb-14.33293 to 2010-Feb-16.46946). Diameter approximately 0.009 km. from weighted mean H=27.91.
2007 PR25JPL Sentry17052094-211331.88439e-08-5.95-6.070JPL: Computed at 12:57 April 14th of 2017 Pacific time based on 43 observations spanning 6.9866 days (2007-Aug-13.22063 to 2007-Aug-20.20726). Diameter approximately 0.140 km. from weighted mean H=21.85.
2007 DX40JPL Sentry17052030-2111416.17626313e-05-3.80-4.220JPL: Computed at 14:44 April 7th of 2017 Pacific time based on 30 observations spanning 8.6956 days (2007-Feb-21.38963 to 2007-Mar-02.085188). Diameter approximately 0.040 km. from weighted mean H=24.62.

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

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

Chronology  on 19 August '20

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

2359Grabbed MPEC 2020-Q107 - 2020 QX1 - see above
Grabbed MPEC 2020-Q108 - 2020 QY1 - see above
2300Grabbed MPEC 2020-Q105 - 2020 ME5 - see above
Grabbed MPEC 2020-Q106 - 2020 QV1 - see above
2231Noted Radar Astrometry database update - see above
2204Grabbed MPEC 2020-Q101 - 2020 QR1 - see above
Grabbed MPEC 2020-Q102 - 2020 QS1 - see above
Grabbed MPEC 2020-Q103 - 2020 QT1 - see above
Grabbed MPEC 2020-Q104 - 2020 QU1 - see above
1900Noted Radar Astrometry database update - see above
1800Grabbed MPEC 2020-Q100 - 2012 YK7 - see above
1705Noted that JPL Sentry has updated its 2007 DX40 risk assessment - see above
Noted that JPL Sentry has updated its 2007 PR25 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CK19 risk assessment - see above
Noted that JPL Sentry has updated its 2015 ME131 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DF3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DK risk assessment - see above
Noted that JPL Sentry has updated its 2020 FA1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 GB1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HQ4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 KN2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 OY5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PB1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PG6 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PQ2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PT2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 PU1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 QC risk assessment - see above
Noted that JPL Sentry has posted 2020 QF1 as an impact risk - see above
Noted that NEODyS has posted 2020 QF1 as an impact risk - see above
Noted that JPL Sentry has posted 2020 QN1 as an impact risk - see above
Grabbed MPEC 2020-Q86 - 2020 QD1 - see above
Grabbed MPEC 2020-Q87 - 2020 QE1 - see above
Grabbed MPEC 2020-Q88 - 2020 PR6 - see above
Grabbed MPEC 2020-Q89 - 2020 QF1 - see above
Grabbed MPEC 2020-Q90 - 2020 QG1 - see above
Grabbed MPEC 2020-Q91 - 2020 QJ1 - see above
Grabbed MPEC 2020-Q92 - 2020 QK1 - see above
Grabbed MPEC 2020-Q93 - 2020 QL1 - see above
Grabbed MPEC 2020-Q94 - 2020 QM1 - see above
Grabbed MPEC 2020-Q95 - 2020 QN1 - see above
Grabbed MPEC 2020-Q96 - 2020 QO1 - see above
Grabbed MPEC 2020-Q97 - 2020 QP1 - see above
Grabbed MPEC 2020-Q98 - Daily Orbit Update - see above
Grabbed MPEC 2020-Q99 - 2013 VZ9 - see above
0444Grabbed MPEC 2020-Q81 - 2020 QW - see above
Grabbed MPEC 2020-Q82 - 2020 QX - see above
Grabbed MPEC 2020-Q83 - 2020 PN6 - see above
Grabbed MPEC 2020-Q84 - 2020 PO6 - see above
Grabbed MPEC 2020-Q85 - 2020 QY - see above