Contents  on 20 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 20 February '20

The MPC's NEO Confirmation Page has 38 listings

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 38 objects listed. Of these, 21 were "one nighters." So far The Tracking News has counted a total of 52 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 20 February '20

Minor Planet Electronic Circulars

As of last check at 2330 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-D81 - "22:23 UT" - 2020 DG2


MPEC 2020-D80 - "20:26 UT" - 2020 DF2


MPEC 2020-D79 - "20:23 UT" - 2020 DE2


MPEC 2020-D78 - "19:56 UT" - 2020 DD2


MPEC 2020-D77 - "19:34 UT" - 2020 DC2


MPEC 2020-D76 - "16:42 UT" - 2020 DB2


MPEC 2020-D75 - "12:32 UT" - 2020 DA2


<< DOU on 20 February '20 >>  MPEC 2020-D74 - "12:10 UT" - Daily Orbit Update


MPEC 2020-D73 - "06:57 UT" - 2020 DZ1


MPEC 2020-D72 - "04:52 UT" - 2010 EF181


MPEC 2020-D71 - "04:38 UT" - 2020 DY1

Observers  on 20 February '20

A total of 43 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-D75 -- 2020 DA2
H21Astronomical Research Obs. Westfield in Illinois, 19 in MPECs 2020-D71, 2020-D72, 2020-D73, 2020-D74, 2020-D75, 2020-D76 & 2020-D77 -- 2020 DZ1, 2020 DY1, 2020 DF, 2020 DC2, 2020 DB2, 2020 DA2, 2020 BW7, 2020 BW10, 2020 BT, 2020 BS5, 2020 BO3, 2020 BJ3, 2020 BE12, 2019 YR6, 2016 HD19, 2015 BQ510, 2011 HS60, 2010 EF181, 481984
C77Bernezzo Obs. in Italy, 1 in MPEC 2020-D78 -- 2020 DD2
Z84Calar Alto Schmidt in Spain, 3 in MPEC 2020-D74 -- 2020 DX1, 2020 CT, 2020 CO
160Castelmartini Obs. in Italy, 18 in MPEC 2020-D74 -- 2020 CF2, 2019 SH6, 2016 CA138, 2016 AX147, 2015 BK509, 90075, 85628, 54686, 512245, 500094, 374188, 36284, 353947, 35107, 34613, 162038, 154993, 11066
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2020-D73 & 2020-D75 -- 2020 DZ1, 2020 DA2
K51Celado Obs. in Italy, 3 in MPECs 2020-D73, 2020-D78 & 2020-D80 -- 2020 DZ1, 2020 DF2, 2020 DD2
958Dax Obs. in France, 3 in MPECs 2020-D73, 2020-D75 & 2020-D78 -- 2020 DZ1, 2020 DD2, 2020 DA2
203GiaGa Obs. in Italy, 1 in MPEC 2020-D73 -- 2020 DZ1
J95Great Shefford Obs. in England, 3 in MPECs 2020-D71, 2020-D73 & 2020-D80 -- 2020 DZ1, 2020 DY1, 2020 DF2
D00ISON Kislovodsk Obs. in Russia, 1 in MPEC 2020-D74 -- 2020 DD
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-D78 -- 2020 DD2
6951Marc W. Buie via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2020-D72 -- 2010 EF181
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-D74 -- 52768
K38M57 Obs. in Italy, 1 in MPEC 2020-D78 -- 2020 DD2
932McCarthy Obs. in Connecticut, 1 in MPEC 2020-D78 -- 2020 DD2
118Modra Obs. in Slovakia, 1 in MPEC 2020-D73 -- 2020 DZ1
474Mt. John Obs. in New Zealand, 4 in MPECs 2020-D74 & 2020-D75 -- 2020 DC, 2020 DA2, 2020 CL1, 2020 BH2
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2020-D71, 2020-D72, 2020-D75, 2020-D76, 2020-D77, 2020-D78, 2020-D79 & 2020-D81 -- 2020 DY1, 2020 DG2, 2020 DE2, 2020 DD2, 2020 DC2, 2020 DB2, 2020 DA2, 2010 EF181
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2020-D81 -- 2020 DG2
F52Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2020-D71 & 2020-D72 -- 2020 DY1, 2010 EF181
K63Pascoli Obs. in Italy, 2 in MPECs 2020-D73 & 2020-D78 -- 2020 DZ1, 2020 DD2
B49Paus Obs. in Spain, 4 in MPECs 2020-D73, 2020-D74 & 2020-D78 -- 2020 DZ1, 2020 DD2, 2020 CP2, 2020 BZ11
586Pic du Midi Obs. in France, 1 in MPEC 2020-D74 -- 99942
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-D74 -- 2020 DB1
654Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-D80 -- 2020 DF2
L04ROASTERR-1 in Romania, 2 in MPECs 2020-D74 & 2020-D78 -- 2020 DD2, 2019 WB6
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-D81 -- 2020 DG2
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-D73 -- 2020 DZ1
C95SATINO-1 in France, 3 in MPECs 2020-D73, 2020-D74 & 2020-D78 -- 2020 DZ1, 2020 DD2, 2013 CL89
204Schiaparelli Obs. in Italy, 2 in MPECs 2020-D73 & 2020-D78 -- 2020 DZ1, 2020 DD2
033Schwarzschild Obs. in Germany, 13 in MPECs 2020-D71, 2020-D72, 2020-D73, 2020-D74, 2020-D75, 2020-D77, 2020-D78 & 2020-D80 -- 2020 DZ1, 2020 DY1, 2020 DF2, 2020 DD2, 2020 DC2, 2020 DA2, 2017 DQ37, 2017 BP31, 2017 BM123, 2017 BB94, 2016 WE1, 2014 YU43, 2010 EF181
W88!W.F. Cashwell in Nevada via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-D74 -- 2017 BM123
Y00SONEAR in Brazil, 2 in MPEC 2020-D74 -- 35107, 20826
587Sormano Obs. in Italy, 1 in MPEC 2020-D80 -- 2020 DF2
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2020-D74 -- 2020 DV, 2020 CF, 2020 BW13, 2020 BR1, 2020 BJ14, 2006 BA9, 1995 CR
I93St. Pardon de Conques Obs. in France, 6 in MPECs 2020-D71, 2020-D73, 2020-D75, 2020-D78, 2020-D80 & 2020-D81 -- 2020 DZ1, 2020 DY1, 2020 DG2, 2020 DF2, 2020 DD2, 2020 DA2
I52Steward Obs. Mt. Lemmon Station in Arizona, 44 in MPECs 2020-D71, 2020-D72, 2020-D73, 2020-D74, 2020-D75, 2020-D76, 2020-D77, 2020-D79 & 2020-D81 -- 2020 DZ1, 2020 DY1, 2020 DY, 2020 DX, 2020 DS, 2020 DQ, 2020 DO1, 2020 DO, 2020 DN, 2020 DM1, 2020 DL, 2020 DK, 2020 DJ1, 2020 DH, 2020 DG2, 2020 DF1, 2020 DE2, 2020 DE1, 2020 DE, 2020 DD1, 2020 DC2, 2020 DC, 2020 DB2, 2020 DB1, 2020 DA2, 2020 CX1, 2020 CX, 2020 CW2, 2020 CF2, 2020 CB3, 2020 CA3, 2020 BZ11, 2020 BX7, 2020 BU12, 2020 BS11, 2020 BR10, 2020 BO5, 2020 BN15, 2020 BD14, 2020 BA4, 2019 YK6, 2019 UO, 2012 XA133, 2010 EF181
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2020-D74 -- 2020 DK, 2020 CF2, 2020 BY15
L01Visnjan Obs. in Croatia, 9 in MPECs 2020-D71, 2020-D72, 2020-D73, 2020-D75, 2020-D76, 2020-D78, 2020-D79, 2020-D80 & 2020-D81 -- 2020 DZ1, 2020 DY1, 2020 DG2, 2020 DF2, 2020 DE2, 2020 DD2, 2020 DB2, 2020 DA2, 2010 EF181
C51WISE in Earth polar orbit, 3 in MPEC 2020-D74 -- 86450, 137199, 11405
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2020-D74 -- 248926, 18172
I41Zwicky Transient Facility (ZTF) in southern California, 31 in MPECs 2020-D74, 2020-D78 & 2020-D80 -- 2020 DF2, 2020 DD2, 2020 BG8, 2020 BE2, 2020 BB16, 2020 BA4, 2019 YG7, 2017 MX4, 2017 BP31, 2016 GZ215, 2016 AX147, 2015 DE200, 2012 BE124, 2011 AM24, 2009 AH16, 85490, 512245, 492143, 482244, 477524, 455322, 425450, 415267, 391275, 34613, 307070, 237805, 214088, 159454, 136582, 1627
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 February '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2330 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 DC2JPL Sentry21032036-2115248.51077e-08-4.21-4.920JPL: Computed at 13:01 today Pacific time based on 21 observations spanning 3.9998 days (2020-Feb-16.19081 to 2020-Feb-20.19062). Diameter approximately 0.460 km. from weighted mean H=19.35.
2020 DJ1JPL Sentry16402083-2117421.52839131e-05-4.95-5.320JPL: Computed at 05:53 today Pacific time based on 18 observations spanning 2.8716 days (2020-Feb-17.24178 to 2020-Feb-20.11335). Diameter approximately 0.036 km. from weighted mean H=24.89.
2020 DVNEODyS1640R E M O V E D-
2020 DKJPL Sentry16402089-2119232.14026e-05-5.43-6.010JPL: Computed at 06:05 today Pacific time based on 38 observations spanning 3.8300 days (2020-Feb-16.30651 to 2020-Feb-20.13647). Diameter approximately 0.021 km. from weighted mean H=26.02.
NEODyS16402093-2118352.14e-05-5.45-5.960NEODyS: "Based on 35 optical observations (of which 3 are rejected as outliers) from 2020-02-16.307 to 2020-02-19.112."
2020 CO2NEODyS16402048-2118321.58e-05-5.63-5.940NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2020-02-14.297 to 2020-02-19.116."
2020 CF2JPL Sentry16402072-2120167.907265e-06-6.79-7.160JPL: Computed at 05:43 today Pacific time based on 54 observations spanning 6.9967 days (2020-Feb-13.349028 to 2020-Feb-20.34576). Diameter approximately 0.011 km. from weighted mean H=27.52.
NEODyS16402072-2118237.62e-04-4.75-4.760NEODyS: "Based on 46 optical observations (of which 2 are rejected as outliers) from 2020-02-13.349 to 2020-02-19.403."
2020 BJ14JPL Sentry16402082-208211.255e-06-5.67-5.670JPL: Computed at 05:28 today Pacific time based on 75 observations spanning 20.868 days (2020-Jan-30.399864 to 2020-Feb-20.26766). Diameter approximately 0.048 km. from weighted mean H=24.25.
2020 AN3NEODyS1640210612.73e-07-4.46-4.460NEODyS: "Based on 150 optical observations (of which 3 are rejected as outliers) from 2019-11-09.148 to 2020-02-19.210."

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 20 February '20

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

2300Grabbed MPEC 2020-D81 - 2020 DG2 - see above
2103Noted that JPL Sentry has posted 2020 DC2 as an impact risk - see above
2032Grabbed MPEC 2020-D79 - 2020 DE2 - see above
Grabbed MPEC 2020-D80 - 2020 DF2 - see above
2000Grabbed MPEC 2020-D77 - 2020 DC2 - see above
Grabbed MPEC 2020-D78 - 2020 DD2 - see above
1700Grabbed MPEC 2020-D76 - 2020 DB2 - see above
1640Noted that NEODyS has updated its 2020 AN3 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BJ14 risk assessment - see above
Noted that JPL Sentry has updated its 2020 CF2 risk assessment - see above
Noted that NEODyS has updated its 2020 CF2 risk assessment - see above
Noted that NEODyS has updated its 2020 CO2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DJ1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 DK risk assessment - see above
Noted that NEODyS has updated its 2020 DK risk assessment - see above
Noted that NEODyS has removed 2020 DV as an impact risk - see above
Grabbed MPEC 2020-D74 - Daily Orbit Update - see above
Grabbed MPEC 2020-D75 - 2020 DA2 - see above
0700Grabbed MPEC 2020-D73 - 2020 DZ1 - see above
0600Grabbed MPEC 2020-D71 - 2020 DY1 - see above
Grabbed MPEC 2020-D72 - 2010 EF181 - see above