Contents  on 25 February '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 25 February '20

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 23 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 25 February '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-D104 - "22:53 UT" - 2020 CD3: Temporarily Captured Object


<< DOU on 25 February '20 >>  MPEC 2020-D103 - "12:17 UT" - Daily Orbit Update

Observers  on 25 February '20

A total of 37 observers appear in today's MPECs.

CodeObserver / observatory
M43Al Sadeem Obs. in Abu Dhabi, 2 in MPEC 2020-D103 -- 52768, 35107
Z35Aras de los Olmos Obs. in Spain, 1 in MPEC 2020-D103 -- 138925
H21Astronomical Research Obs. Westfield in Illinois, 21 in MPEC 2020-D103 -- 2020 DR2, 2020 DF1, 2020 CC2, 2020 BY9, 2020 BW10, 2020 BO3, 2020 BL13, 2020 BK5, 2020 BH5, 2020 AU, 2020 AS2, 2019 YR6, 2019 YE2, 2019 QV5, 2019 OZ1, 2018 KP1, 2018 KB1, 2016 TK, 2015 FE37, 242147, 164221
T05ATLAS Haleakala in Hawaii, 31 in MPEC 2020-D103 -- 2020 DZ1, 2020 DP2, 2019 XN1, 2019 WB6, 2019 SH6, 2017 BM123, 2016 AX147, 2015 OL35, 2015 BK509, 2005 SQ, 86450, 85628, 68350, 66008, 506459, 500094, 388838, 36284, 353947, 35107, 34613, 30825, 306462, 214088, 15745, 11405, 7088, 5693, 5626, 1864, 1627
T08ATLAS Mauna Loa in Hawaii, 15 in MPEC 2020-D103 -- 2020 DR2, 2019 UO, 2010 AB78, 96315, 86667, 65690, 494880, 458452, 424965, 329340, 19764, 138847, 115052, 7088, 4954
V00Bok Telescope in Arizona, 1 in MPEC 2020-D104 -- 2020 CD3
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2020-D104 -- 2020 CD3
160Castelmartini Obs. in Italy, 5 in MPEC 2020-D103 -- 2020 DX, 2020 BZ12, 2019 WB6, 2017 BM123, 2015 BK509
703Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2020-D103 -- 2019 XG1, 2016 WE1, 2009 AH16, 89830, 136993
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 12 in MPEC 2020-D103 -- 2020 DO, 2020 DN, 2020 DM1, 2020 BU8, 2020 BP13, 2020 BG15, 2019 YN6, 2015 FE33, 2015 BJ514, 2013 RM43, 2013 GS38, 2006 GB
309'Martin Altmann in Germany via Cerro Paranal in Chile, 1 in MPEC 2020-D103 -- 500094
8071Marc W. Buie via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-D103 -- 2015 VK142
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-D103 -- 10145
006Fabra Obs. in Spain, 1 in MPEC 2020-D103 -- 35107
E89Geyserland Obs. in New Zealand, 7 in MPEC 2020-D103 -- 90075, 163243, 11405, 11066, 8566, 5626, 1627
J95Great Shefford Obs. in England, 2 in MPECs 2020-D103 & 2020-D104 -- 2020 DW1, 2020 CD3
130Lumezzane Obs. in Italy, 1 in MPEC 2020-D103 -- 248926
W92MASTER OAFA Obs., 1 in MPEC 2020-D103 -- 1864
C94MASTER-II Tunka in Russia, 1 in MPEC 2020-D103 -- 2019 XG1
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2020-D103 -- 2020 BB16, 2020 AZ2, 2000 BO28
474Mt. John Obs. in New Zealand, 13 in MPEC 2020-D103 -- 2020 DV1, 2020 DS2, 2020 DC, 2020 CU1, 2020 CG1, 2020 CF2, 2020 BZ12, 2020 BO5, 2020 BN10, 2020 BL8, 2020 BA4, 2019 YH4, 2019 UJ2
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2020-D103 & 2020-D104 -- 2020 CD3, 2015 XE352, 2015 TT351
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2020-D103 -- 2015 RE83, 2015 MO11
F52Pan-STARRS 2 (PS2) in Hawaii, 3 in MPEC 2020-D103 -- 2015 RZ35, 2015 NW9, 2015 FT344
B49Paus Obs. in Spain, 1 in MPEC 2020-D103 -- 2015 BK509
122Pises Obs. in France, 5 in MPEC 2020-D103 -- 391275, 34613, 18172, 159454, 1627
654Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-D103 -- 2020 BX10
L04ROASTERR-1 in Romania, 1 in MPEC 2020-D103 -- 2020 DZ1
C95SATINO-1 in France, 1 in MPEC 2020-D103 -- 1999 DB2
033Schwarzschild Obs. in Germany, 3 in MPEC 2020-D103 -- 2020 DP2, 2020 DJ2, 2020 DD2
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2020-D103 -- 2020 BX7, 2020 BX3, 2020 BG15, 2019 YH4, 2019 WF3, 2015 XE352, 2011 UC292
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2020-D103 & 2020-D104 -- 2020 CH1, 2020 CD3, 2019 YP5, 2019 BT2, 2013 JA17
I52Steward Obs. Mt. Lemmon Station in Arizona, 14 in MPECs 2020-D103 & 2020-D104 -- 2020 DY, 2020 DX1, 2020 DQ, 2020 DN1, 2020 DF1, 2020 CX2, 2020 CX1, 2020 CD3, 2020 BX3, 2020 BV13, 2020 BR10, 2020 BP15, 2020 BM14, 2015 FZ344
L75Tartu Obs. in Estonia, 2 in MPEC 2020-D103 -- 2005 RB, 433
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-D103 -- 2008 UB95
L01Visnjan Obs. in Croatia, 7 in MPECs 2020-D103 & 2020-D104 -- 2020 DX1, 2020 CD3, 2019 YE4, 2017 BP31, 2017 BM123, 2017 BE92, 2011 GD60
I41Zwicky Transient Facility (ZTF) in southern California, 25 in MPEC 2020-D103 -- 2020 BH11, 2020 BE2, 2019 YD2, 2019 TZ4, 2018 BN3, 2017 MX4, 2017 DJ34, 2015 OX78, 2014 YD35, 2014 QX390, 2013 UR3, 99248, 455554, 438452, 415267, 388838, 35107, 331876, 232368, 18172, 15745, 152889, 138205, 136582, 10145
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 February '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 DR2JPL Sentry21212073-2117153.9973562e-06-2.22-2.680JPL: Computed at 12:53 today Pacific time based on 126 observations spanning 4.1475 days (2020-Feb-20.19345 to 2020-Feb-24.340985). Diameter approximately 0.590 km. from weighted mean H=18.80.
NEODyS16302062-2114174.77e-06-2.15-2.50NEODyS: "Based on 127 optical observations (of which 1 are rejected as outliers) from 2020-02-20.194 to 2020-02-24.342."
2020 CF2JPL Sentry21212072-211797.209995e-06-6.83-7.110JPL: Computed at 13:04 today Pacific time based on 70 observations spanning 11.224 days (2020-Feb-13.349028 to 2020-Feb-24.573501). Diameter approximately 0.011 km. from weighted mean H=27.52.
NEODyS16302096-211693.06e-04-5.15-5.150NEODyS: "Based on 71 optical observations (of which 2 are rejected as outliers) from 2020-02-13.349 to 2020-02-24.574."

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 25 February '20

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

2358Grabbed MPEC 2020-D104 - 2020 CD3: Temporarily Captured Object - see above
2121Noted that JPL Sentry has updated its 2020 CF2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above
1630Noted that NEODyS has updated its 2020 CF2 risk assessment - see above
Noted that NEODyS has updated its 2020 DR2 risk assessment - see above
Grabbed MPEC 2020-D103 - Daily Orbit Update - see above