Contents  on 4 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.

NEOCP Activity  on 4 March '20

The MPC's NEO Confirmation Page has 13 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had thirteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of fourteen 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 4 March '20

Minor Planet Electronic Circulars

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


MPEC 2020-E14 - "21:27 UT" - 2020 DB5


MPEC 2020-E13 - "15:00 UT" - 2016 RF40


<< DOU on 4 March '20 >>  MPEC 2020-E12 - "12:03 UT" - Daily Orbit Update


MPEC 2020-E11 - "02:30 UT" - 2019 AR13

Observers  on 4 March '20

A total of 27 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2020-E12 -- 2020 DS, 2020 DB1, 360192
T05ATLAS Haleakala in Hawaii, 24 in MPEC 2020-E12 -- 2020 DX, 2020 DP2, 2019 XN1, 2019 WB6, 2016 AX147, 2010 UE7, 86067, 66008, 54686, 500094, 40267, 388838, 36284, 353947, 35107, 34613, 18172, 15745, 137064, 7088, 5693, 5626, 2102, 1864
T08ATLAS Mauna Loa in Hawaii, 6 in MPEC 2020-E12 -- 2020 BO5, 2019 UO, 2015 RH2, 1999 DB2, 144411, 4954
V00Bok Telescope in Arizona, 1 in MPEC 2020-E14 -- 2020 DB5
Z84Calar Alto Schmidt in Spain, 2 in MPEC 2020-E12 -- 2020 DP3, 2020 DB
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 18 in MPEC 2020-E12 -- 2020 DV4, 2020 DV3, 2020 DT4, 2020 DS3, 2020 DQ4, 2020 DP2, 2020 DO4, 2020 DN3, 2020 DM4, 2020 DL4, 2020 DK4, 2020 DJ4, 2020 DH4, 2020 DF1, 2020 DC3, 2020 CZ2, 2020 CF2, 2017 BE32
G58Chabot Obs. in northern California, 3 in MPEC 2020-E12 -- 2017 DQ37, 2017 BE92, 2003 SS84
Z99Clixby Obs. in England, 3 in MPEC 2020-E12 -- 2020 DX, 2015 OL35, 89830
J95Great Shefford Obs. in England, 5 in MPEC 2020-E12 -- 2020 DX, 2020 DR2, 2020 CX2, 2020 BZ12, 2020 BP14
W86LCO Cerro Tololo B in Chile, 1 in MPEC 2020-E13 -- 2016 RF40
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2020-E13 -- 2016 RF40
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-E12 -- 1866
L52MASTER Tavrida, 1 in MPEC 2020-E12 -- 1866
C94MASTER-II Tunka in Russia, 1 in MPEC 2020-E12 -- 1866
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-E14 -- 2020 DB5
474Mt. John Obs. in New Zealand, 10 in MPECs 2020-E12 & 2020-E14 -- 2020 DZ1, 2020 DQ3, 2020 DP3, 2020 DB5, 2020 DA4, 2020 CM2, 2020 CL1, 2020 BU12, 2020 BS12, 2017 BE32
J69North Obs. in England, 1 in MPEC 2020-E12 -- 2017 BM123
Z80Northolt Branch Obs. in England, 4 in MPEC 2020-E12 -- 2020 DX, 2017 BM123, 52768, 500094
F52Pan-STARRS 2 (PS2) in Hawaii, 9 in MPEC 2020-E12 -- 2020 DU4, 2020 AZ2, 2004 CH52, 65690, 363599, 274138, 136618, 11066, 2329
K63Pascoli Obs. in Italy, 1 in MPEC 2020-E12 -- 500094
C95SATINO-1 in France, 1 in MPEC 2020-E12 -- 2010 XD11
033Schwarzschild Obs. in Germany, 1 in MPEC 2020-E14 -- 2020 DB5
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2020-E12 -- 2020 DR2, 2020 DN3, 2020 DG4, 2020 CF2
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 2 in MPEC 2020-E12 -- 2020 BD14, 2019 YG7
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-E11 & 2020-E12 -- 2020 BB5, 2019 AR13
C51WISE in Earth polar orbit, 2 in MPEC 2020-E12 -- 159929, 11885
I41Zwicky Transient Facility (ZTF) in southern California, 8 in MPEC 2020-E12 -- 2019 WB6, 90367, 89830, 539940, 491565, 482244, 425450, 388838
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 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 DB5JPL Sentry23022025-21193251.816357e-06-2.73-3.550JPL: Computed at 14:41 today Pacific time based on 17 observations spanning 4.1270 days (2020-Feb-29.51672 to 2020-Mar-04.643712). Diameter approximately 0.506 km. from weighted mean H=19.13.
2020 DG4NEODyS17022094-2118154.03e-06-7.35-7.910NEODyS: "Based on 33 optical observations (of which 1 are rejected as outliers) from 2020-02-27.295 to 2020-03-04.356."
JPL Sentry16302093-2114141.0999678e-05-6.91-7.530JPL: Computed at 06:38 today Pacific time based on 32 observations spanning 6.0615 days (2020-Feb-27.29404 to 2020-Mar-04.35558). Diameter approximately 0.007 km. from weighted mean H=28.31.
2020 DN3NEODyS17022107-211796.17e-07-7.31-7.550NEODyS: "Based on 66 optical observations (of which 0 are rejected as outliers) from 2020-02-26.217 to 2020-03-04.327."
JPL Sentry16302107-211968.19827e-07-7.16-7.690JPL: Computed at 06:33 today Pacific time based on 66 observations spanning 7.1101 days (2020-Feb-26.21575 to 2020-Mar-04.32587). Diameter approximately 0.015 km. from weighted mean H=26.82.
2020 DR2JPL Sentry17022074-208121.1965e-05-1.76-1.921JPL: Computed at 06:53 today Pacific time based on 179 observations spanning 13.081 days (2020-Feb-20.19345 to 2020-Mar-04.27439). Diameter approximately 0.590 km. from weighted mean H=18.80.
NEODyS17022074-208129.09e-06-1.89-2.011NEODyS: "Based on 186 optical observations (of which 2 are rejected as outliers) from 2020-02-20.194 to 2020-03-04.275."
2020 CF2NEODyS17022104-211683.68e-06-7.15-7.450NEODyS: "Based on 90 optical observations (of which 6 are rejected as outliers) from 2020-02-13.349 to 2020-03-04.449."
JPL Sentry16302072-2120127.612396e-06-6.82-7.130JPL: Computed at 06:42 today Pacific time based on 85 observations spanning 20.045 days (2020-Feb-13.349028 to 2020-Mar-04.39432). Diameter approximately 0.011 km. from weighted mean H=27.53.
2020 BB5NEODyS17022092-2118183.04e-04-6.11-6.120NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2020-01-23.324 to 2020-01-31.487."
JPL Sentry16302092-2119110.000244798158-6.18-6.200JPL: Computed at 06:32 today Pacific time based on 48 observations spanning 8.1631 days (2020-Jan-23.32313 to 2020-Jan-31.486274). Diameter approximately 0.004 km. from weighted mean H=29.67.
2008 EL68JPL Sentry16302020-21135953.09788468e-05-5.52-6.210JPL: Computed at 11:57 April 9th of 2017 Pacific time based on 8 observations spanning .07124 days (2008-Mar-06.40768 to 2008-Mar-06.47892). Diameter approximately 0.009 km. from weighted mean H=27.92.

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 4 March '20

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

2302Noted that JPL Sentry has posted 2020 DB5 as an impact risk - see above
2200Grabbed MPEC 2020-E14 - 2020 DB5 - see above
1702Noted that NEODyS has updated its 2020 BB5 risk assessment - see above
Noted that NEODyS has updated its 2020 CF2 risk assessment - see above
Noted that NEODyS has updated its 2020 DG4 risk assessment - see above
Noted that NEODyS has updated its 2020 DN3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above
Noted that NEODyS has updated its 2020 DR2 risk assessment - see above
1630Noted that JPL Sentry has updated its 2008 EL68 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BB5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CF2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DG4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DN3 risk assessment - see above
Grabbed MPEC 2020-E12 - Daily Orbit Update - see above
Grabbed MPEC 2020-E13 - 2016 RF40 - see above
0508Grabbed MPEC 2020-E11 - 2019 AR13 - see above