Contents  on 22 January '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.

Traffic Report  on 22 January '20

Sixteen objects reported inside ten LD

There are sixteen asteroids reported moving within ten lunar distances (LD) of Earth today. Nearest is risk-listed 2020 BB, which is inside our planet's gravitational sphere of influence and comes its closest to the Moon this time around -- 2.32 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
2.00 LD yesterday 2020 BB 6 m  2.01 to 2.25 LD Jan. 9 - Feb. 2 NHATS target, Moon closest 2.32 LD at
0551 UTC, risk - DOU
2.56 LD tomorrow 2020 BB1 8 m  2.72 from 4.31 LD Jan. 19 - 27 DOU
2.7   LD Jan. 14* 2020 BH 8 m  6.6 to 7.3 LD Jan. 1 - 26 EPU +/- 5 mins.*, NHATS target, risk
2.99 LD Jan. 14 2020 BS 9 m  7.31 to 8.17 LD Jan. 4 - 25 NHATS target - DOU
3.67 LD yesterday 2020 BP 25 m  3.82 to 6.06 LD Jan. 19 - 24 DOU
3.71 LD Jan. 10 2019 YF4 13 m  8.22 to 8.77 LD Dec. 27 - Jan. 25 NHATS target
3.82 LD yesterday 2020 BY 43 m  3.83 to 5.59 LD Jan. 19 - 24 DOU
6.4   LD Jan. 19* 2020 BK 16 m  6.9 to 7.4 LD Jan. 11 - 27 EPU +/- 12 mins.*, NHATS target
6.62 LD yesterday 2020 BS1 19 m  6.64 to 6.86 LD Jan. 15 - 27 NHATS target - DOU
6.85 LD Jan. 16 2019 YD3 21 m  9.29 to 10.05 LD Jan. 9 - 22 NHATS target, exits ten LD - DOU
7.7   LD Jan. 24* 2020 BF1 21 m  7.8 from 8.1 LD Jan. 18 - 30 EPU +/- 20 mins.*, NHATS target, risk
8.23 LD Jan. 16 2020 AZ1 16 m  9.78 to 10.28 LD Jan. 9 - 22 NHATS target, exits ten LD
8.30 LD Jan. 25 2020 AK3 21 m  9.04 from 9.77 LD yesterday - Jan. 28 NHATS target - DOU
8.6   LD Jan. 15* 2020 BV2 9 m  10.0 to 10.4 LD Jan. 9 - 22 NEW, EPU +/- 14 mins.*, exits ten LD - MPEC
9.08 LD Jan. 17 2020 AD1 19 m  9.96 to 10.40 LD Jan. 13 - 22 NHATS target, exits ten LD
9.8   LD yesterday* 2020 BN 9 m  9.8 to 9.9 LD Jan. 20 - 23 EPU +/- 25 mins.*
* EPU = Earth passage uncertainty
Approaching
Earth passage I D ~Size Distance today  Inside ten LD Notes
3.69 LD Feb. 4 2013 BA74 27 m  20.60 from 22.27 LD Jan. 29 - Feb. 9

This report was generated at 2220 UTC with the discovery of outbound 2020 BV2 (MPEC) and with follow-up in today's DOU MPEC for inbound objects 2020 AK3 and risk-listed 2020 BB1, six outbound objects: 2020 BS1, 2020 BY, 2020 BS, 2020 BP, 2019 YD3, and risk-listed 2020 BB, and three departed objects: 2019 YX1, 2019 YA1, and risk-listed 2020 BY1.

See also our "Earth's Busy Neighborhood," a new page still in development with more traffic info and quicker discovery reporting.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

Radar Astrometry  on 22 January '20

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2302 UTC when the database was dated 22 Jan.



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 22 January '20

The MPC's NEO Confirmation Page has 100 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 100 objects listed. Of these, 49 were "one nighters." So far The Tracking News has counted a total of 130 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 22 January '20

Minor Planet Electronic Circulars

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


MPEC 2020-B87 - "23:14 UT" - 2020 BO3


MPEC 2020-B86 - "23:06 UT" - 2020 BN3


MPEC 2020-B85 - "23:01 UT" - 2020 BK3


MPEC 2020-B84 - "22:59 UT" - 2020 BJ3


MPEC 2020-B83 - "22:33 UT" - 2020 BH3


MPEC 2020-B82 - "22:30 UT" - 2020 BG3


MPEC 2020-B81 - "19:37 UT" - 2020 BB3


MPEC 2020-B80 - "16:26 UT" - 2020 BX2


MPEC 2020-B79 - "16:18 UT" - 2020 BW2


MPEC 2020-B78 - "16:15 UT" - 2020 BV2


MPEC 2020-B77 - "16:12 UT" - 2020 BU2


MPEC 2020-B76 - "16:06 UT" - 2020 BT2


MPEC 2020-B75 - "15:55 UT" - 2020 BS2


MPEC 2020-B74 - "15:50 UT" - 2020 BR2


MPEC 2020-B73 - "13:41 UT" - 2020 BQ2


<< DOU on 22 January '20 >>  MPEC 2020-B72 - "12:07 UT" - Daily Orbit Update


MPEC 2020-B71 - "01:24 UT" - 2020 BP2

Observers  on 22 January '20

A total of 44 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2020-B72 & 2020-B81 -- 2020 BB3, 2003 OC3
251Arecibo in Puerto Rico, 1 in radar -- 2011 WN15
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2020-B71, 2020-B73, 2020-B76, 2020-B81, 2020-B84, 2020-B86 & 2020-B87 -- 2020 BT2, 2020 BQ2, 2020 BP2, 2020 BO3, 2020 BN3, 2020 BJ3, 2020 BB3
T05ATLAS Haleakala in Hawaii, 23 in MPECs 2020-B72 & 2020-B81 -- 2020 BB3, 2016 XO23, 2016 LE9, 2015 XK351, 2006 KY86, 66008, 65690, 525364, 470951, 458732, 450160, 391275, 349063, 20826, 162825, 143947, 143527, 137925, 11405, 8566, 5131, 4954, 3691
T08ATLAS Mauna Loa in Hawaii, 45 in MPECs 2020-B72, 2020-B73, 2020-B81 & 2020-B85 -- 2020 BQ2, 2020 BO1, 2020 BK3, 2020 BB3, 2020 AD3, 2019 YD2, 2019 XN1, 2019 SH6, 2019 SH1, 2017 MX4, 2016 AX147, 2015 OX78, 2014 NF64, 2011 CT4, 2004 MD, 1996 AE2, 99248, 86326, 85628, 52768, 511684, 511523, 463282, 458745, 455322, 438452, 437316, 427778, 374188, 36284, 34613, 307070, 276397, 25916, 232368, 214088, 163373, 138846, 137924, 103067, 10145, 6239, 3752, 1864, 1627
703Catalina Sky Survey in Arizona, 1 in MPEC 2020-B72 -- 86666
309&Marco Micheli via Cerro Paranal in Chile, 1 in MPEC 2020-B72 -- 2019 YX1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2020-B71 & 2020-B76 -- 2020 BT2, 2020 BP2
Z99Clixby Obs. in England, 3 in MPECs 2020-B72 & 2020-B82 -- 2020 BV, 2020 BG3, 2020 BE
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2020-B73 & 2020-B81 -- 2020 BQ2, 2020 BB3
958Dax Obs. in France, 1 in MPEC 2020-B73 -- 2020 BQ2
K87Dettelbach Vineyard Obs. in Germany, 2 in MPECs 2020-B72 & 2020-B82 -- 2020 BJ1, 2020 BG3
K05Eden Obs., 1 in MPEC 2020-B72 -- 437316
734Farpoint Obs. in Kansas, 1 in MPEC 2020-B82 -- 2020 BG3
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2020-B72, 2020-B81 & 2020-B85 -- 2020 BY, 2020 BK3, 2020 BB3
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2020-B81 -- 2020 BB3
W46Foxfire Village Obs., 2 in MPEC 2020-B72 -- 2020 BE, 2015 OX78
203GiaGa Obs. in Italy, 1 in MPEC 2020-B85 -- 2020 BK3
J95Great Shefford Obs. in England, 4 in MPECs 2020-B73, 2020-B75, 2020-B81 & 2020-B82 -- 2020 BS2, 2020 BQ2, 2020 BG3, 2020 BB3
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-B72 -- 2003 OC3
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-B72 -- 2011 CT4
246KLENOT in the Czech Republic, 21 in MPECs 2020-B71, 2020-B72, 2020-B73, 2020-B81, 2020-B82, 2020-B86 & 2020-B87 -- 2020 BY1, 2020 BV, 2020 BS1, 2020 BS, 2020 BR, 2020 BQ2, 2020 BP2, 2020 BO3, 2020 BO1, 2020 BN3, 2020 BJ1, 2020 BH1, 2020 BG3, 2020 BE, 2020 BB3, 2020 BB1, 2020 BB, 2020 AO3, 2020 AK3, 2020 AD3, 2012 TO139
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-B72 -- 163373
Z43Landehen Obs., 1 in MPEC 2020-B72 -- 2020 BP
Q63LCO Siding Spring A in New South Wales, 1 in MPEC 2020-B81 -- 2020 BB3
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2020-B82 -- 2020 BG3
U71MPC code U71, 3 in MPEC 2020-B72 -- 52768, 437316, 333555
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2020-B72 & 2020-B82 -- 2020 BG3, 2018 TC6, 2017 SW20
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-B72 -- 2020 AD3
F51Pan-STARRS 1 (PS1) in Hawaii, 40 in MPECs 2020-B71, 2020-B72, 2020-B73, 2020-B74, 2020-B76, 2020-B77, 2020-B78, 2020-B79, 2020-B80, 2020-B81, 2020-B82, 2020-B83 & 2020-B85 -- 2020 BX2, 2020 BW2, 2020 BV2, 2020 BU2, 2020 BU1, 2020 BT2, 2020 BR2, 2020 BQ2, 2020 BP2, 2020 BK3, 2020 BH3, 2020 BG3, 2020 BB3, 2019 YX5, 2019 YP4, 2019 YG4, 2019 OA3, 2017 MX4, 2017 BF3, 2014 YW34, 2014 YV43, 2014 YU43, 2010 RN82, 2009 FU4, 2008 TP10, 2005 SQ, 488490, 474223, 463216, 456973, 444628, 385497, 185702, 162452, 155334, 154029, 136582, 103067, 1916, 719
F52Pan-STARRS 2 (PS2) in Hawaii, 50 in MPECs 2020-B71, 2020-B72, 2020-B74, 2020-B75, 2020-B78, 2020-B80, 2020-B84, 2020-B85, 2020-B86 & 2020-B87 -- 2020 BX2, 2020 BV2, 2020 BS2, 2020 BR2, 2020 BQ1, 2020 BP2, 2020 BO3, 2020 BN3, 2020 BK3, 2020 BJ3, 2019 YD3, 2019 YA1, 2019 WB6, 2019 TZ1, 2019 SV7, 2019 SH6, 2019 QF2, 2019 OA5, 2016 AX147, 2016 AR130, 2014 YV43, 2014 MM55, 2013 CN128, 2012 TO139, 2011 UC292, 2011 CT4, 2009 NH, 2005 SQ, 90075, 68548, 516986, 458062, 455322, 438452, 374188, 363831, 354876, 349219, 338347, 235086, 232368, 228368, 190166, 175189, 164221, 163081, 153958, 152679, 5626, 1627
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2020-B82, 2020-B84, 2020-B85 & 2020-B86 -- 2020 BN3, 2020 BK3, 2020 BJ3, 2020 BG3
H36Sandlot Obs. in Kansas, 1 in MPEC 2020-B75 -- 2020 BS2
C95SATINO-1 in France, 1 in MPEC 2020-B72 -- 2013 CA88
K96Savelli Obs., 3 in MPECs 2020-B82, 2020-B85 & 2020-B86 -- 2020 BN3, 2020 BK3, 2020 BG3
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-B82 -- 2020 BG3
033Schwarzschild Obs. in Germany, 18 in MPECs 2020-B71, 2020-B72, 2020-B73, 2020-B74, 2020-B75, 2020-B76, 2020-B77, 2020-B78, 2020-B79, 2020-B80, 2020-B82, 2020-B83, 2020-B84, 2020-B86 & 2020-B87 -- 2020 BX2, 2020 BW2, 2020 BV2, 2020 BU2, 2020 BT2, 2020 BS2, 2020 BR2, 2020 BQ2, 2020 BP2, 2020 BO3, 2020 BN3, 2020 BJ3, 2020 BH3, 2020 BG3, 2019 BO1, 2016 WE1, 2011 CT4, 2004 BT58
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-B72 -- 2017 VW1
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-B73 & 2020-B83 -- 2020 BQ2, 2020 BH3
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-B73 -- 2020 BQ2
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-B82 -- 2020 BG3
A16Tentlingen Obs. in Switzerland, 5 in MPEC 2020-B72 -- 99248, 163373, 11405, 6456, 6455
L01Visnjan Obs., 10 in MPECs 2020-B75, 2020-B76, 2020-B80, 2020-B81, 2020-B82, 2020-B83, 2020-B84, 2020-B85, 2020-B86 & 2020-B87 -- 2020 BX2, 2020 BT2, 2020 BS2, 2020 BO3, 2020 BN3, 2020 BK3, 2020 BJ3, 2020 BH3, 2020 BG3, 2020 BB3
G33Wickede Obs. in Germany, 1 in MPEC 2020-B72 -- 437316
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 January '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 BY1JPL Sentry17002049-205731.5374437e-05-4.98-4.980JPL: Computed at 08:17 today Pacific time based on 37 observations spanning 1.4808 days (2020-Jan-20.460859 to 2020-Jan-21.94169). Diameter approximately 0.020 km. from weighted mean H=26.15.
NEODyS1700204921.51e-05-5.00-5.00NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2020-01-20.462 to 2020-01-21.942."
2020 BB1NEODyS1700R E M O V E D-
2020 BBJPL Sentry17002107-210712.733e-07-8.76-8.760JPL: Computed at 08:09 today Pacific time based on 80 observations spanning 3.7774 days (2020-Jan-18.28892 to 2020-Jan-22.06637). Diameter approximately 0.006 km. from weighted mean H=28.59.
NEODyS17002101-211541.88e-07-8.97-9.190NEODyS: "Based on 80 optical observations (of which 1 are rejected as outliers) from 2020-01-18.290 to 2020-01-22.067."

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 22 January '20

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

2358Grabbed MPEC 2020-B86 - 2020 BN3 - see above
Grabbed MPEC 2020-B87 - 2020 BO3 - see above
2302Grabbed MPEC 2020-B82 - 2020 BG3 - see above
Grabbed MPEC 2020-B83 - 2020 BH3 - see above
Grabbed MPEC 2020-B84 - 2020 BJ3 - see above
Grabbed MPEC 2020-B85 - 2020 BK3 - see above
Noted Radar Astrometry database update - see above
2220Generated Traffic Report
2200Grabbed MPEC 2020-B81 - 2020 BB3 - see above
1700Noted that JPL Sentry has updated its 2020 BB risk assessment - see above
Noted that NEODyS has updated its 2020 BB risk assessment - see above
Noted that NEODyS has removed 2020 BB1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 BY1 risk assessment - see above
Noted that NEODyS has updated its 2020 BY1 risk assessment - see above
Grabbed MPEC 2020-B72 - Daily Orbit Update - see above
Grabbed MPEC 2020-B73 - 2020 BQ2 - see above
Grabbed MPEC 2020-B74 - 2020 BR2 - see above
Grabbed MPEC 2020-B75 - 2020 BS2 - see above
Grabbed MPEC 2020-B76 - 2020 BT2 - see above
Grabbed MPEC 2020-B77 - 2020 BU2 - see above
Grabbed MPEC 2020-B78 - 2020 BV2 - see above
Grabbed MPEC 2020-B79 - 2020 BW2 - see above
Grabbed MPEC 2020-B80 - 2020 BX2 - see above
0136Grabbed MPEC 2020-B71 - 2020 BP2 - see above