Contents  on 20 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 20 January '20

Sixteen objects reported inside ten LD

There are sixteen minor objects reported inside ten lunar distances (LD) of Earth today. The nearest of these, risk-listed 2020 BB, enters our planet's sphere of gravitational influence, gliding in from 2.46 to 2.09 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 tomorrow 2020 BB 6 m  2.09 from 2.46 LD Jan. 9 - Feb. 2 NHATS target, enters Earth SOI, risk - DOU
2.6   LD Jan. 23* 2020 BB1 8 m  6.5 from 8.9 LD yesterday - Jan. 27 NEW, EPU +/- 39 mins.*, risk - MPEC
2.7   LD Jan. 14* 2020 BH 8 m  5.3 to 5.9 LD Jan. 1 - 26 EPU +/- 5 mins.*, NHATS target, risk
2.99 LD Jan. 14 2020 BS 9 m  5.67 to 6.48 LD Jan. 4 - 25 NHATS target - DOU
3.67 LD tomorrow 2020 BP 27 m  4.55 from 7.42 LD yesterday - Jan. 24
3.71 LD Jan. 10 2019 YF4 13 m  7.14 to 7.67 LD Dec. 27 - Jan. 25 NHATS target
3.82 LD tomorrow 2020 BY 44 m  5.14 from 8.15 LD yesterday - Jan. 24 NEW - MPEC
6.4   LD yesterday* 2020 BK 16 m  6.4 to 6.6 LD Jan. 11 - 27 EPU +/- 12 mins.*, NHATS target
6.5   LD Jan. 13* 2020 AE1 11 m  8.8 to 9.5 LD Jan. 5 - 21 EPU +/- 1.28 hours*, NHATS target
6.85 LD Jan. 16 2019 YD3 21 m  8.00 to 8.60 LD Jan. 9 - 22 NHATS target
7.43 LD yesterday 2020 AM3 35 m  7.97 to 10.07 LD Jan. 17 - 20 exits ten LD
7.7   LD Jan. 24* 2020 BF1 21 m  8.4 from 8.9 LD Jan. 18 - 30 NEW, EPU +/- 20 mins.*, risk - MPEC
8.2   LD Jan. 17* 2020 BL 14 m  9.1 to 9.9 LD Jan. 13 - 21 EPU +/- 7 mins.*
8.23 LD Jan. 16 2020 AZ1 16 m  8.95 to 9.34 LD Jan. 9 - 22 NHATS target
9.08 LD Jan. 17 2020 AD1 19 m  9.33 to 9.60 LD Jan. 13 - 22 NHATS target
9.8   LD tomorrow* 2020 BN 9 m  9.9 from 10.2 LD today - Jan. 23 EPU +/- 25 mins.*, enters ten LD
* EPU = Earth passage uncertainty
Approaching
Earth passage I D ~Size Distance today  Inside ten LD Notes
8.29 LD Jan. 25 2020 AK3 21 m  10.68 from 11.73 LD tomorrow - Jan. 28 NHATS target

This report was generated at 1950 UTC with five discoveries, starting with outbound 2020 BS (MPEC, DOU), announced late yesterday, and, from today, inbound 2020 BY (MPEC), risk-listed inbound 2020 BF1 (MPEC) and 2020 BB1 (MPEC), and departed risk-listed 2020 BD1 (MPEC), which flew by us at about 4.03 LD on January 16th. Today's DOU MPEC has follow-up for inbound risk-listed 2020 BB and three departed objects: 2020 BD, 2019 YA1, and risk-listed 2020 AY1.



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.

NEOCP Activity  on 20 January '20

The MPC's NEO Confirmation Page has 96 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 96 objects listed. Of these, 54 were "one nighters." So far The Tracking News has counted a total of 125 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 January '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been 24 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-B48 - "23:42 UT" - 2020 BR1


MPEC 2020-B47 - "23:41 UT" - 2020 BQ1


MPEC 2020-B46 - "23:39 UT" - 2020 BP1


MPEC 2020-B45 - "23:37 UT" - 2020 BO1


MPEC 2020-B44 - "23:34 UT" - 2020 BN1


MPEC 2020-B43 - "23:29 UT" - 2020 BM1


MPEC 2020-B42 - "23:27 UT" - 2020 BL1


MPEC 2020-B41 - "23:26 UT" - 2020 BK1


MPEC 2020-B40 - "21:45 UT" - 2020 BJ1


MPEC 2020-B39 - "19:10 UT" - 2020 BH1


MPEC 2020-B38 - "15:00 UT" - 2018 FQ5


<< DOU on 20 January '20 >>  MPEC 2020-B37 - "12:05 UT" - Daily Orbit Update


MPEC 2020-B36 - "11:58 UT" - 2020 BD1


MPEC 2020-B35 - "11:57 UT" - 2020 BB1


MPEC 2020-B34 - "11:57 UT" - 2020 BA1


MPEC 2020-B33 - "11:55 UT" - 2020 BG1


MPEC 2020-B32 - "11:55 UT" - 2020 BF1


MPEC 2020-B31 - "11:53 UT" - 2020 BC1


MPEC 2020-B30 - "11:52 UT" - 2020 BE1


MPEC 2020-B29 - "11:49 UT" - 2020 BZ


MPEC 2020-B28 - "11:47 UT" - 2020 BY


MPEC 2020-B27 - "11:45 UT" - 2020 BX


MPEC 2020-B26 - "11:42 UT" - 2020 BW


MPEC 2020-B25 - "11:39 UT" - 2020 BV

Observers  on 20 January '20

A total of 48 observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 26 in MPECs 2020-B28 & 2020-B37 -- 2020 BY, 2020 BB, 2019 XN1, 2016 UT80, 2004 MD, 1996 AE2, 99248, 86326, 85628, 511684, 438452, 427778, 374188, 36284, 34613, 276397, 214088, 163373, 141052, 137084, 9400, 4450, 3200, 1864, 1627, 1620
T08ATLAS Mauna Loa in Hawaii, 22 in MPECs 2020-B28, 2020-B37 & 2020-B45 -- 2020 BY, 2020 BO1, 2017 XD, 2016 LE9, 2013 DU, 2006 DY, 66008, 525364, 504074, 470951, 458452, 38086, 349063, 162825, 159454, 143527, 141765, 138883, 138847, 137925, 8566, 3691
X74Campo dos Amarais Obs., 1 in MPEC 2020-B45 -- 2020 BO1
160Castelmartini Obs. in Italy, 15 in MPEC 2020-B37 -- 2019 YC, 2019 YA, 2019 XX, 2019 XU2, 2019 UB11, 2016 UT80, 2013 PV2, 99248, 86326, 36236, 338347, 141052, 106538, 6239, 1620
703Catalina Sky Survey (CSS) in Arizona, 30 in MPECs 2020-B37 & 2020-B45 -- 2020 BO1, 2020 AH1, 2016 XO23, 2015 XK351, 2015 OL35, 2006 KY86, 90075, 66959, 54686, 53110, 492143, 488490, 458732, 428223, 391275, 35107, 349063, 338347, 310442, 203015, 173561, 138013, 137925, 11405, 106589, 106538, 10115, 7092, 6569, 2059
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPECs 2020-B27 & 2020-B43 -- 2020 BX, 2020 BM1
Z99Clixby Obs. in England, 1 in MPEC 2020-B39 -- 2020 BH1
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-B45 -- 2020 BO1
958Dax Obs. in France, 3 in MPECs 2020-B37, 2020-B39 & 2020-B45 -- 2020 BS, 2020 BO1, 2020 BH1
K87Dettelbach Vineyard Obs. in Germany, 2 in MPECs 2020-B39 & 2020-B40 -- 2020 BJ1, 2020 BH1
734Farpoint Obs. in Kansas, 4 in MPECs 2020-B25 & 2020-B37 -- 2020 BV, 2015 BC92, 2013 AS27, 2004 BT58
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-B39 & 2020-B45 -- 2020 BO1, 2020 BH1
E89Geyserland Obs. in New Zealand, 2 in MPEC 2020-B37 -- 137925, 11405
J95Great Shefford Obs. in England, 6 in MPECs 2020-B29, 2020-B31, 2020-B37, 2020-B39, 2020-B40 & 2020-B45 -- 2020 BZ, 2020 BO1, 2020 BJ1, 2020 BH1, 2020 BC1, 2020 BB
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-B45 -- 2020 BO1
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-B45 -- 2020 BO1
Z43Landehen Obs., 1 in MPEC 2020-B45 -- 2020 BO1
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2020-B37 -- 2020 BE
H01Magdalena Ridge Obs. (MRO) in New Mexico, 16 in MPECs 2020-B25, 2020-B26, 2020-B27, 2020-B29, 2020-B30, 2020-B31, 2020-B32, 2020-B34, 2020-B35, 2020-B39, 2020-B40, 2020-B42, 2020-B43, 2020-B45, 2020-B46 & 2020-B48 -- 2020 BZ, 2020 BX, 2020 BW, 2020 BV, 2020 BR1, 2020 BP1, 2020 BO1, 2020 BM1, 2020 BL1, 2020 BJ1, 2020 BH1, 2020 BF1, 2020 BE1, 2020 BC1, 2020 BB1, 2020 BA1
L51MARGO in Ukraine, 1 in MPEC 2020-B25 -- 2020 BV
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-B37 -- 137170
711McDonald Obs. in Texas, 8 in MPECs 2020-B30, 2020-B37, 2020-B39, 2020-B40 & 2020-B47 -- 2020 BQ1, 2020 BJ1, 2020 BH1, 2020 BE1, 2020 BC, 2019 YR5, 2019 TL4, 2012 TO139
V14Moose Springs Obs., 1 in MPEC 2020-B37 -- 2011 WN15
474Mt. John Obs. in New Zealand, 2 in MPECs 2020-B37 & 2020-B45 -- 2020 BO1, 2020 BB
G96Mt. Lemmon Survey (MLS) in Arizona, 44 in MPECs 2020-B26, 2020-B27, 2020-B29, 2020-B30, 2020-B31, 2020-B32, 2020-B34, 2020-B35, 2020-B36, 2020-B37, 2020-B39, 2020-B40, 2020-B42, 2020-B43, 2020-B46 & 2020-B48 -- 2020 BZ, 2020 BX, 2020 BW, 2020 BR1, 2020 BP1, 2020 BM1, 2020 BL1, 2020 BJ1, 2020 BH1, 2020 BF1, 2020 BE1, 2020 BD1, 2020 BC1, 2020 BB1, 2020 BA1, 2020 AY1, 2020 AJ3, 2020 AA3, 2019 YP5, 2019 YK4, 2019 XX, 2019 XG1, 2019 QR6, 2019 PR2, 2017 SN14, 2014 PF68, 2012 AB11, 2010 UH7, 2008 YX32, 2008 XP, 2005 QX151, 1998 SE35, 523775, 516155, 459386, 416591, 415267, 397471, 363814, 323179, 185702, 152575, 137099, 6455
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2020-B37 -- 2004 FJ11
J69North Obs. in England, 5 in MPECs 2020-B37 & 2020-B45 -- 2020 BR, 2020 BO1, 2020 BO, 2020 BE, 2020 BB
Z80Northolt Branch Obs. in England, 3 in MPECs 2020-B37 & 2020-B45 -- 2020 BO1, 52768, 18172
C23Olmen Obs. in Belgium, 3 in MPECs 2020-B37 & 2020-B45 -- 2020 BO1, 52768, 437316
F51Pan-STARRS 1 (PS1) in Hawaii, 36 in MPECs 2020-B25, 2020-B26, 2020-B27, 2020-B28, 2020-B33, 2020-B36, 2020-B37, 2020-B41, 2020-B42, 2020-B44, 2020-B45 & 2020-B47 -- 2020 BY, 2020 BX, 2020 BW, 2020 BV, 2020 BQ1, 2020 BO1, 2020 BN1, 2020 BL1, 2020 BK1, 2020 BG1, 2020 BD1, 2020 AW2, 2020 AK, 2019 YY5, 2019 YU3, 2019 YR5, 2019 XN1, 2019 WB6, 2019 TH7, 2017 BM123, 2016 YO3, 2014 YW34, 2009 WF, 65690, 500094, 456973, 413038, 359242, 203015, 189700, 183548, 164217, 163694, 15745, 155334, 5646
F52Pan-STARRS 2 (PS2) in Hawaii, 15 in MPECs 2020-B31, 2020-B32, 2020-B33, 2020-B34, 2020-B37, 2020-B42, 2020-B43, 2020-B44 & 2020-B48 -- 2020 BR1, 2020 BN1, 2020 BM1, 2020 BL1, 2020 BG1, 2020 BF1, 2020 BC1, 2020 BA1, 2019 YR4, 90075, 413421, 285944, 5626, 2329, 719
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 16 in MPEC 2020-B37 -- 2020 AD3, 2019 YD2, 2019 XW2, 2019 XG1, 2019 SH6, 2017 AE5, 2014 NF64, 2011 CT4, 2004 MD, 2002 EY2, 1996 AE2, 52768, 310442, 137120, 103067, 10115
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-B45 -- 2020 BO1
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-B25 & 2020-B37 -- 2020 BV, 2019 YR5
C95SATINO-1 in France, 2 in MPECs 2020-B37 & 2020-B39 -- 2020 BH1, 2012 BE124
204Schiaparelli Obs. in Italy, 1 in MPEC 2020-B45 -- 2020 BO1
033Schwarzschild Obs. in Germany, 9 in MPECs 2020-B40, 2020-B41, 2020-B42, 2020-B43, 2020-B44, 2020-B45, 2020-B46, 2020-B47 & 2020-B48 -- 2020 BR1, 2020 BQ1, 2020 BP1, 2020 BO1, 2020 BN1, 2020 BM1, 2020 BL1, 2020 BK1, 2020 BJ1
587Sormano Obs. in Italy, 4 in MPECs 2020-B31 & 2020-B37 -- 2020 BD, 2020 BC1, 2020 BC, 2020 AV2
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2020-B37 -- 2019 UT9, 2017 ME, 2016 AX147, 25330
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2020-B37 -- 2019 YA1, 2019 TM2
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-B25, 2020-B39 & 2020-B45 -- 2020 BV, 2020 BO1, 2020 BH1
Z86St. Mellons Obs. in Wales, 1 in MPEC 2020-B37 -- 2004 BT58
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2020-B39 & 2020-B40 -- 2020 BJ1, 2020 BH1
I52Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPECs 2020-B26, 2020-B27, 2020-B29, 2020-B30, 2020-B31, 2020-B32, 2020-B33, 2020-B34, 2020-B35, 2020-B37, 2020-B39, 2020-B40, 2020-B42, 2020-B45, 2020-B46 & 2020-B47 -- 2020 BZ, 2020 BX, 2020 BW, 2020 BQ1, 2020 BP1, 2020 BO1, 2020 BL1, 2020 BJ1, 2020 BH1, 2020 BG1, 2020 BF1, 2020 BE1, 2020 BC1, 2020 BC, 2020 BB1, 2020 BA1, 52768
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2020-B37 -- 30825, 137925, 3988
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-B38 -- 2018 FQ5
L01Visnjan Obs., 12 in MPECs 2020-B25, 2020-B28, 2020-B30, 2020-B37, 2020-B39, 2020-B40, 2020-B41, 2020-B42, 2020-B44, 2020-B45, 2020-B46 & 2020-B47 -- 2020 BY, 2020 BV, 2020 BQ1, 2020 BP1, 2020 BO1, 2020 BN1, 2020 BL1, 2020 BK1, 2020 BJ1, 2020 BH1, 2020 BE1, 2019 XN1
718Wiggins Obs. in Utah, 1 in MPEC 2020-B45 -- 2020 BO1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 January '20

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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 BF1JPL Sentry16052065-211138.962e-09-8.77-9.060JPL: Computed at 05:10 today Pacific time based on 19 observations spanning .91693 days (2020-Jan-19.5176 to 2020-Jan-20.434534). Diameter approximately 0.021 km. from weighted mean H=26.09.
2020 BD1JPL Sentry16052048-204822.83637e-08-8.26-8.260JPL: Computed at 05:02 today Pacific time based on 9 observations spanning .98057 days (2020-Jan-18.35637 to 2020-Jan-19.33694). Diameter approximately 0.011 km. from weighted mean H=27.35.
NEODyS16052048-2118114.04e-08-8.18-8.230NEODyS: "Based on 10 optical observations (of which 1 are rejected as outliers) from 2020-01-18.352 to 2020-01-19.338."
2020 BB1NEODyS1605210715.51e-11-12.02-12.020NEODyS: "Based on 14 optical observations (of which 1 are rejected as outliers) from 2020-01-19.272 to 2020-01-20.197."
2020 BBJPL Sentry16052107-211023.5429e-07-8.70-8.780JPL: Computed at 05:38 today Pacific time based on 62 observations spanning 1.5844 days (2020-Jan-18.28892 to 2020-Jan-19.873326). Diameter approximately 0.006 km. from weighted mean H=28.69.
NEODyS16052100-211772.9e-07-8.82-9.260NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2020-01-18.290 to 2020-01-19.874."
2020 AY1JPL Sentry16052103-210311.301e-07-7.33-7.330JPL: Computed at 05:41 today Pacific time based on 102 observations spanning 13.992 days (2020-Jan-05.24158 to 2020-Jan-19.23395). Diameter approximately 0.032 km. from weighted mean H=25.12.
NEODyS1605210315.38e-08-7.73-7.730NEODyS: "Based on 103 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-01-19.235."

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 January '20

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

2359Grabbed MPEC 2020-B41 - 2020 BK1 - see above
Grabbed MPEC 2020-B42 - 2020 BL1 - see above
Grabbed MPEC 2020-B43 - 2020 BM1 - see above
Grabbed MPEC 2020-B44 - 2020 BN1 - see above
Grabbed MPEC 2020-B45 - 2020 BO1 - see above
Grabbed MPEC 2020-B46 - 2020 BP1 - see above
Grabbed MPEC 2020-B47 - 2020 BQ1 - see above
Grabbed MPEC 2020-B48 - 2020 BR1 - see above
2200Grabbed MPEC 2020-B40 - 2020 BJ1 - see above
1950Generated Traffic Report
1931Grabbed MPEC 2020-B39 - 2020 BH1 - see above
1605Noted that JPL Sentry has reposted 2020 AY1 as an impact risk - see above
Noted that NEODyS has updated its 2020 AY1 risk assessment - see above
Noted 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 posted 2020 BB1 as an impact risk - see above
Noted that JPL Sentry has posted 2020 BD1 as an impact risk - see above
Noted that NEODyS has posted 2020 BD1 as an impact risk - see above
Noted that JPL Sentry has posted 2020 BF1 as an impact risk - see above
Grabbed MPEC 2020-B25 - 2020 BV - see above
Grabbed MPEC 2020-B26 - 2020 BW - see above
Grabbed MPEC 2020-B27 - 2020 BX - see above
Grabbed MPEC 2020-B28 - 2020 BY - see above
Grabbed MPEC 2020-B29 - 2020 BZ - see above
Grabbed MPEC 2020-B30 - 2020 BE1 - see above
Grabbed MPEC 2020-B31 - 2020 BC1 - see above
Grabbed MPEC 2020-B32 - 2020 BF1 - see above
Grabbed MPEC 2020-B33 - 2020 BG1 - see above
Grabbed MPEC 2020-B34 - 2020 BA1 - see above
Grabbed MPEC 2020-B35 - 2020 BB1 - see above
Grabbed MPEC 2020-B36 - 2020 BD1 - see above
Grabbed MPEC 2020-B37 - Daily Orbit Update - see above
Grabbed MPEC 2020-B38 - 2018 FQ5 - see above