Contents  on 28 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 28 February '20

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 49 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 28 February '20

Minor Planet Electronic Circulars

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


MPEC 2020-D134 - "23:00 UT" - 2020 DD4


MPEC 2020-D133 - "22:58 UT" - 2020 DC4


MPEC 2020-D132 - "22:56 UT" - 2020 DB4


MPEC 2020-D131 - "22:29 UT" - 2020 DA4


MPEC 2020-D130 - "21:04 UT" - 2020 DZ3


MPEC 2020-D129 - "21:02 UT" - 2020 DY3


<< DOU on 28 February '20 >>  MPEC 2020-D128 - "12:23 UT" - Daily Orbit Update


MPEC 2020-D127 - "05:09 UT" - 2020 DW3


MPEC 2020-D126 - "05:03 UT" - 2020 DV3


MPEC 2020-D125 - "04:55 UT" - 2020 DU3


MPEC 2020-D124 - "04:47 UT" - 2020 DT3


MPEC 2020-D123 - "03:19 UT" - 2020 DS3


MPEC 2020-D122 - "03:17 UT" - 2020 DR3


MPEC 2020-D121 - "03:15 UT" - 2020 DQ3


MPEC 2020-D120 - "03:13 UT" - 2020 DP3

Observers  on 28 February '20

A total of 57 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-D131 -- 2020 DA4
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-D128 & 2020-D130 -- 2020 DZ3, 2020 DR2, 2020 BE12, 2020 BB1, 2002 PO75, 351508
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2020-D128 -- 106589
T08ATLAS Mauna Loa in Hawaii, 14 in MPECs 2020-D121 & 2020-D128 -- 2020 DQ3, 2019 XG1, 2017 BM123, 2009 AH16, 52768, 511523, 463282, 448818, 162080, 137199, 136993, 111253, 9400, 1866
Z84Calar Alto Schmidt in Spain, 2 in MPECs 2020-D131 & 2020-D134 -- 2020 DD4, 2020 DA4
160Castelmartini Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
703Catalina Sky Survey (CSS) in Arizona, 34 in MPECs 2020-D120, 2020-D122, 2020-D126, 2020-D128, 2020-D130 & 2020-D132 -- 2020 DZ3, 2020 DV3, 2020 DR3, 2020 DP3, 2020 DE3, 2020 DB4, 2020 CA3, 2020 AZ2, 2019 UO, 2019 TH7, 2016 LE9, 2015 RH2, 2013 CL89, 2011 CX46, 2008 EE5, 2006 PY17, 2004 CH52, 2003 OC3, 2000 BO28, 1999 DB2, 90075, 65690, 492143, 402267, 250620, 175189, 162038, 154229, 152561, 143527, 11066, 106589, 8566, 2329
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-D125 -- 2020 DU3
309&Marco Micheli via Cerro Paranal in Chile, 2 in MPEC 2020-D128 -- 2020 CQ1, 2020 CE1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2020-D128, 2020-D129, 2020-D131, 2020-D132 & 2020-D133 -- 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DP3, 2020 DL2, 2020 DC4, 2020 DB4, 2020 DA4
Z99Clixby Obs. in England, 4 in MPECs 2020-D121, 2020-D122, 2020-D128 & 2020-D131 -- 2020 DR3, 2020 DQ3, 2020 DC3, 2020 DA4
958Dax Obs. in France, 1 in MPEC 2020-D131 -- 2020 DA4
G372program code 2 via Discovery Channel Telescope (DCT) in Arizona, 2 in MPEC 2020-D128 -- 2019 QR6, 2019 PR2
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 13 in MPECs 2020-D120, 2020-D122, 2020-D123, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D130, 2020-D131, 2020-D132, 2020-D133 & 2020-D134 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DV3, 2020 DS3, 2020 DR3, 2020 DR2, 2020 DP3, 2020 DF3, 2020 DD4, 2020 DC4, 2020 DB4, 2020 DA4
734Farpoint Obs. in Kansas, 9 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D128, 2020-D129, 2020-D130, 2020-D131 & 2020-D132 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DB4, 2020 DA4
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
L34Galhassin Robotic Telescope, 1 in MPEC 2020-D131 -- 2020 DA4
X31Galilei Obs., 3 in MPECs 2020-D122, 2020-D126 & 2020-D131 -- 2020 DV3, 2020 DR3, 2020 DA4
203GiaGa Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
J95Great Shefford Obs. in England, 7 in MPECs 2020-D121, 2020-D122, 2020-D125, 2020-D127, 2020-D128, 2020-D131 & 2020-D132 -- 2020 DW3, 2020 DU3, 2020 DR3, 2020 DQ3, 2020 DM3, 2020 DB4, 2020 DA4
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2020-D131 -- 2020 DA4
W86LCO Cerro Tololo B in Chile, 1 in MPEC 2020-D120 -- 2020 DP3
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2020-D130 -- 2020 DZ3
Q63LCO Siding Spring A in New South Wales, 2 in MPECs 2020-D120 & 2020-D130 -- 2020 DZ3, 2020 DP3
711McDonald Obs. in Texas, 8 in MPECs 2020-D120, 2020-D121, 2020-D123, 2020-D124, 2020-D126, 2020-D127, 2020-D130 & 2020-D131 -- 2020 DZ3, 2020 DW3, 2020 DV3, 2020 DT3, 2020 DS3, 2020 DQ3, 2020 DP3, 2020 DA4
159Monte Agliale Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
V01Mountainville Obs. in Utah, 1 in MPEC 2020-D121 -- 2020 DQ3
G96Mt. Lemmon Survey (MLS) in Arizona, 34 in MPECs 2020-D120, 2020-D122, 2020-D123, 2020-D124, 2020-D125, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D131, 2020-D133 & 2020-D134 -- 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DP3, 2020 DN1, 2020 DF2, 2020 DD4, 2020 DC4, 2020 DA4, 2020 DA2, 2020 CB1, 2020 CA3, 2020 BX14, 2020 BW2, 2020 BJ11, 2020 BE15, 2020 BA4, 2019 TH7, 2018 ET2, 2018 AG2, 2017 DU15, 2016 RW33, 2015 DJ155, 2015 DD200, 2015 BT515, 2015 AB, 2010 EF181, 2010 CH55, 2004 RV2, 2004 CH52
J69North Obs. in England, 3 in MPECs 2020-D121, 2020-D122 & 2020-D131 -- 2020 DR3, 2020 DQ3, 2020 DA4
Z80Northolt Branch Obs. in England, 2 in MPECs 2020-D121 & 2020-D131 -- 2020 DQ3, 2020 DA4
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2020-D128 -- 2019 AG13, 2010 US7
K63Pascoli Obs. in Italy, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D129, 2020-D131 & 2020-D132 -- 2020 DY3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DB4, 2020 DA4
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2020-D128 -- 2020 DX, 2020 DR2, 2020 BP14, 2016 UT80, 2016 AX147, 2008 EE5, 2005 SQ, 52768, 35107
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-D131 -- 2020 DA4
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-D128 -- 2020 BS1, 2020 AQ1
L18QOS Obs., 3 in MPEC 2020-D128 -- 2020 DX, 2017 BM123, 40267
L04ROASTERR-1 in Romania, 2 in MPECs 2020-D121 & 2020-D131 -- 2020 DQ3, 2020 DA4
H36Sandlot Obs. in Kansas, 5 in MPECs 2020-D120, 2020-D125, 2020-D128, 2020-D129 & 2020-D131 -- 2020 DY3, 2020 DU3, 2020 DP3, 2020 DA4, 2016 FG15
C95SATINO-1 in France, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D124, 2020-D126, 2020-D128 & 2020-D131 -- 2020 DV3, 2020 DT3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DA4, 2009 FU4
K96Savelli Obs., 4 in MPECs 2020-D128, 2020-D130, 2020-D131 & 2020-D132 -- 2020 DZ3, 2020 DM3, 2020 DB4, 2020 DA4
204Schiaparelli Obs. in Italy, 3 in MPECs 2020-D121, 2020-D130 & 2020-D131 -- 2020 DZ3, 2020 DQ3, 2020 DA4
033Schwarzschild Obs. in Germany, 2 in MPECs 2020-D123 & 2020-D128 -- 2020 DS3, 2020 DC3
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D128 -- 2020 DP2
G40-program code "-" (22) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D128 -- 2020 DQ3
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-D128 -- 2020 DR2
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2020-D128 -- 2020 DF3, 2020 BS11, 2020 BC16, 2016 AX147, 2008 UB95
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-D128 -- 1995 CR
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-D128 & 2020-D131 -- 2020 DQ3, 2020 DA4
I93St. Pardon de Conques Obs. in France, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D125, 2020-D127, 2020-D129 & 2020-D131 -- 2020 DY3, 2020 DW3, 2020 DU3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DA4
I52Steward Obs. Mt. Lemmon Station in Arizona, 14 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D124, 2020-D125, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D130, 2020-D131, 2020-D132, 2020-D133 & 2020-D134 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DD4, 2020 DC4, 2020 DB4, 2020 DA4
Q38Swan Hill Obs., 1 in MPEC 2020-D128 -- 2020 BZ12
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 2 in MPECs 2020-D123 & 2020-D131 -- 2020 DS3, 2020 DA4
W33Transit Dreams Obs., 4 in MPEC 2020-D128 -- 2000 BO28, 65690, 52768, 35107
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-D128 -- 2020 BN7
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2020-D128 -- 2020 CD3
L01Visnjan Obs. in Croatia, 5 in MPECs 2020-D120, 2020-D122, 2020-D131, 2020-D133 & 2020-D134 -- 2020 DR3, 2020 DP3, 2020 DD4, 2020 DC4, 2020 DA4
C51WISE in Earth polar orbit, 1 in MPEC 2020-D128 -- 416231
I41Zwicky Transient Facility (ZTF) in southern California, 20 in MPEC 2020-D128 -- 2020 BH11, 2019 XG, 2017 MX4, 2013 UR3, 99248, 90367, 511243, 482244, 415267, 36284, 338347, 331792, 214088, 20255, 18172, 162080, 15745, 137099, 137064, 7088
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 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 DN3NEODyS16302104-211793.94e-07-7.46-7.990NEODyS: "Based on 57 optical observations (of which 0 are rejected as outliers) from 2020-02-26.217 to 2020-02-27.337."
2020 DM3JPL Sentry16302109-210911.960e-07-7.38-7.380JPL: Computed at 06:50 today Pacific time based on 53 observations spanning 1.8610 days (2020-Feb-26.14966 to 2020-Feb-28.01069). Diameter approximately 0.020 km. from weighted mean H=26.17.
NEODyS1630210917.42e-09-8.82-8.820NEODyS: "Based on 53 optical observations (of which 1 are rejected as outliers) from 2020-02-26.150 to 2020-02-28.011."
2020 DF3JPL Sentry16302053-2115134.651653e-06-4.67-5.130JPL: Computed at 06:37 today Pacific time based on 51 observations spanning 3.7788 days (2020-Feb-24.44469 to 2020-Feb-28.22348). Diameter approximately 0.050 km. from weighted mean H=24.13.
NEODyS16302050-2117192.14e-06-5.02-5.40NEODyS: "Based on 51 optical observations (of which 1 are rejected as outliers) from 2020-02-24.445 to 2020-02-28.224."
2020 DR2JPL Sentry23122074-211441.52659786e-05-1.65-1.941JPL #2 for the day: Computed at 14:29 today Pacific time based on 155 observations spanning 7.6498 days (2020-Feb-20.19345 to 2020-Feb-27.843204). Diameter approximately 0.590 km. from weighted mean H=18.80.
NEODyS16302074-211441.4e-05-1.69-1.991NEODyS: "Based on 162 optical observations (of which 2 are rejected as outliers) from 2020-02-20.194 to 2020-02-28.112."
2020 DF2NEODyS1630211713.2e-11-11.27-11.270NEODyS: "Based on 64 optical observations (of which 1 are rejected as outliers) from 2020-02-19.162 to 2020-02-27.250."
2020 CD3JPL Sentry23122061-2118240.02178499458-5.22-5.550JPL #3 for the day: Computed at 14:39 today Pacific time based on 55 observations spanning 12.134 days (2020-Feb-15.51114 to 2020-Feb-27.645156). Diameter approximately 0.002 km. from weighted mean H=31.72.
2020 CQ1JPL Sentry23122052-2107160.00131544566-4.92-4.950JPL #2 for the day: Computed at 15:03 today Pacific time based on 41 observations spanning 21.927 days (2020-Feb-05.3547 to 2020-Feb-27.281772). Diameter approximately 0.006 km. from weighted mean H=28.83.
NEODyS16302052-2118647.17e-03-4.21-4.70NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2020-02-05.356 to 2020-02-27.283."
2020 CE1JPL Sentry16302095-209523.68e-07-6.81-7.090JPL: Computed at 06:31 today Pacific time based on 31 observations spanning 24.925 days (2020-Feb-02.15265 to 2020-Feb-27.077916). Diameter approximately 0.026 km. from weighted mean H=25.60.
NEODyS1630209523.44e-08-7.86-8.150NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-02-02.153 to 2020-02-27.079."

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 28 February '20

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

2312Noted that JPL Sentry has updated its 2020 CD3 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 DR2 risk assessment - see above
Grabbed MPEC 2020-D131 - 2020 DA4 - see above
Grabbed MPEC 2020-D132 - 2020 DB4 - see above
Grabbed MPEC 2020-D133 - 2020 DC4 - see above
Grabbed MPEC 2020-D134 - 2020 DD4 - see above
2209Grabbed MPEC 2020-D129 - 2020 DY3 - see above
Grabbed MPEC 2020-D130 - 2020 DZ3 - see above
1630Noted that JPL Sentry has updated its 2020 CD3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CE1 risk assessment - see above
Noted that NEODyS has updated its 2020 CE1 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 posted 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 DM3 risk assessment - see above
Noted that NEODyS has posted 2020 DM3 as an impact risk - see above
Noted that NEODyS has posted 2020 DN3 as an impact risk - 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
Grabbed MPEC 2020-D128 - Daily Orbit Update - see above
0642Grabbed MPEC 2020-D126 - 2020 DV3 - see above
Grabbed MPEC 2020-D127 - 2020 DW3 - see above
0500Grabbed MPEC 2020-D124 - 2020 DT3 - see above
Grabbed MPEC 2020-D125 - 2020 DU3 - see above
0407Grabbed MPEC 2020-D120 - 2020 DP3 - see above
Grabbed MPEC 2020-D121 - 2020 DQ3 - see above
Grabbed MPEC 2020-D122 - 2020 DR3 - see above
Grabbed MPEC 2020-D123 - 2020 DS3 - see above
0105Noted that JPL Sentry has updated its 2020 CD3 risk assessment - see above