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Contents  on 11 March '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.

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NEOCP Activity  on 11 March '20

The MPC's NEO Confirmation Page has 7 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven objects listed. Of these, four were "one nighters."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

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New MPECs  on 11 March '20

Minor Planet Electronic Circulars

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


MPEC 2020-E42 - "15:00 UT" - 2017 RE110


<< DOU on 11 March '20 >>  MPEC 2020-E41 - "12:06 UT" - Daily Orbit Update

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Observers  on 11 March '20

Nineteen observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 8 in MPEC 2020-E41 -- 90075, 65690, 492143, 36284, 138127, 8566, 5626, 4055
T08ATLAS Mauna Loa in Hawaii, 9 in MPEC 2020-E41 -- 2019 XG1, 90367, 89830, 52768, 500094, 448818, 35107, 154993, 1864
470Ceccano Obs. in Italy, 1 in MPEC 2020-E41 -- 52768
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 46 in MPECs 2020-E41 & 2020-E42 -- 2020 DZ1, 2020 DX, 2020 DV1, 2020 DR2, 2020 DN1, 2020 DN, 2020 DJ1, 2020 DG2, 2020 DF2, 2020 DC2, 2020 DA2, 2020 CN1, 2020 CM2, 2020 CL1, 2020 CG1, 2020 CA3, 2020 CA2, 2020 BX10, 2020 BW2, 2020 BU5, 2020 BU12, 2020 BT12, 2020 BR13, 2020 BQ1, 2020 BO5, 2020 BN10, 2020 BL9, 2020 BG6, 2020 BE15, 2020 BD15, 2020 BD14, 2020 BB13, 2020 BA6, 2020 AN3, 2019 YZ5, 2019 YY5, 2019 YL1, 2019 YC5, 2019 XB2, 2019 WR3, 2019 UO, 2019 UJ15, 2019 UC4, 2019 TH7, 2017 RE110, 2016 RF40
W84!program code "!" (10) via DECam in Chile, 3 in MPEC 2020-E41 -- 495316, 388945, 363076
G375program code 5 via Discovery Channel Telescope (DCT) in Arizona, 4 in MPEC 2020-E41 -- 2020 DG4, 2020 DF3, 2020 CQ1, 2020 CK2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-E41 -- 52768
950.EURONEAR via La Palma in the Canary Islands, 1 in MPEC 2020-E41 -- 2005 SQ
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2020-E41 -- 65690
Z22MASTER IAC Obs. in the Canary Islands, 2 in MPEC 2020-E41 -- 5626, 1627
711McDonald Obs. in Texas, 1 in MPEC 2020-E41 -- 2020 AP3
C82Nastro Verde Obs. in Italy, 1 in MPEC 2020-E41 -- 52768
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2020-E41 -- 52768, 35107, 159454
F52Pan-STARRS 2 (PS2) in Hawaii, 5 in MPEC 2020-E41 -- 2020 DR2, 90075, 52768, 162038, 1864
K81PMPHR Obs., 1 in MPEC 2020-E41 -- 5626
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 5 in MPEC 2020-E41 -- 86450, 512245, 511684, 159454, 136795
233San Vito Obs. in Italy, 2 in MPEC 2020-E41 -- 40267, 11405
C95SATINO-1 in France, 1 in MPEC 2020-E41 -- 2017 XD
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-E41 -- 35107
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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Impact Risk Monitoring  on 11 March '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 DG4NEODyS21002094-2118143.64e-06-7.33-7.780NEODyS #2 for the day: "Based on 42 optical observations (of which 1 are rejected as outliers) from 2020-02-27.295 to 2020-03-05.488."
JPL Sentry19152093-2120151.0094887e-05-6.88-7.370JPL #2 for the day: Computed at 12:08 today Pacific time based on 41 observations spanning 7.1935 days (2020-Feb-27.29404 to 2020-Mar-05.487554). Diameter approximately 0.008 km. from weighted mean H=28.17.
2020 DF3NEODyS21002067-2115109.37e-07-5.28-5.50NEODyS #2 for the day: "Based on 71 optical observations (of which 1 are rejected as outliers) from 2020-02-24.445 to 2020-03-05.464."
JPL Sentry19152067-211549.8386e-07-5.23-5.430JPL #2 for the day: Computed at 12:03 today Pacific time based on 71 observations spanning 10.018 days (2020-Feb-24.44469 to 2020-Mar-05.46304). Diameter approximately 0.050 km. from weighted mean H=24.16.
2020 DR2JPL Sentry1615R E M O V E DJPL: Risk listing removed at 1349 UTC today
NEODyS1615R E M O V E D-
2020 DF2NEODyS1615211713.82e-11-11.20-11.20NEODyS: "Based on 70 optical observations (of which 1 are rejected as outliers) from 2020-02-19.162 to 2020-02-29.423."
2020 DJ1JPL Sentry16152083-2117252.55647624e-05-4.72-4.960JPL: Computed at 06:34 today Pacific time based on 24 observations spanning 6.8708 days (2020-Feb-17.24178 to 2020-Feb-24.1126). Diameter approximately 0.036 km. from weighted mean H=24.85.
NEODyS16152068-2117541.82e-05-4.88-5.350NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2020-02-17.243 to 2020-02-24.113."
2020 CK2NEODyS21002057-21181005.62e-05-6.63-7.420NEODyS #2 for the day: "Based on 30 optical observations (of which 1 are rejected as outliers) from 2020-02-14.506 to 2020-03-05.481."
JPL Sentry19152057-2118445.006605e-05-6.71-7.530JPL #2 for the day: Computed at 12:04 today Pacific time based on 30 observations spanning 19.975 days (2020-Feb-14.50537 to 2020-Mar-05.48032). Diameter approximately 0.005 km. from weighted mean H=29.26.
2020 CQ1NEODyS21002070-2118484.25e-03-4.42-4.420NEODyS #2 for the day: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2020-02-05.356 to 2020-03-05.508."
JPL Sentry19152070-2119140.00451141679-4.37-4.380JPL #2 for the day: Computed at 12:03 today Pacific time based on 47 observations spanning 29.152 days (2020-Feb-05.3547 to 2020-Mar-05.506938). Diameter approximately 0.006 km. from weighted mean H=28.81.
2020 AN3JPL Sentry16152106-210614.392e-08-5.25-5.250JPL: Computed at 06:30 today Pacific time based on 157 observations spanning 113.95 days (2019-Nov-09.147003 to 2020-Mar-02.1012). Diameter approximately 0.280 km. from weighted mean H=20.45.
NEODyS1615210618.74e-08-4.97-4.970NEODyS: "Based on 166 optical observations (of which 3 are rejected as outliers) from 2019-11-09.148 to 2020-03-02.102."
2008 EM68JPL Sentry16152020-211610901.08447711e-05-5.58-6.250JPL: Computed at 00:27 April 7th of 2017 Pacific time based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183). Diameter approximately 0.010 km. from weighted mean H=27.72.

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.

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Chronology  on 11 March '20

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

2100Noted that NEODyS has updated its 2020 CK2 risk assessment - see above
Noted that NEODyS has updated its 2020 CQ1 risk assessment - see above
Noted that NEODyS has updated its 2020 DF3 risk assessment - see above
Noted that NEODyS has updated its 2020 DG4 risk assessment - see above
1915Noted that JPL Sentry has updated its 2020 CK2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CQ1 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 DG4 risk assessment - see above
1615Noted that JPL Sentry has updated its 2008 EM68 risk assessment - see above
Noted that JPL Sentry has updated its 2020 AN3 risk assessment - see above
Noted that NEODyS has updated its 2020 AN3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CK2 risk assessment - see above
Noted that NEODyS has updated its 2020 CK2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CQ1 risk assessment - see above
Noted that NEODyS has updated its 2020 CQ1 risk assessment - see above
Noted that NEODyS has reposted 2020 DF2 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 DF3 risk assessment - see above
Noted that NEODyS has updated its 2020 DF3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DG4 risk assessment - see above
Noted that NEODyS has updated its 2020 DG4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DJ1 risk assessment - see above
Noted that NEODyS has updated its 2020 DJ1 risk assessment - see above
Noted that JPL Sentry has removed 2020 DR2 as an impact risk - see above
Noted that NEODyS has removed 2020 DR2 as an impact risk - see above
Grabbed MPEC 2020-E41 - Daily Orbit Update - see above
Grabbed MPEC 2020-E42 - 2017 RE110 - see above