Contents  on 18 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 18 January '20

Nine objects reported inside ten LD

Today there are nine objects reported inside ten lunar distances (LD) of Earth, all of them out beyond six LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
3.71 LD Jan. 10 2019 YF4 13 m  6.10 to 6.61 LD Dec. 27 - Jan. 25 NHATS target - DOU
3.82 LD Jan. 12 2020 AB2 14 m  9.79 to 11.46 LD Jan. 7 - 18 NHATS target, exits ten LD
6.05 LD yesterday 2020 AL3 20 m  6.60 to 8.14 LD Jan. 14 - 19 DOU
6.5   LD Jan. 13* 2020 AE1 11 m  7.7 to 8.3 LD Jan. 5 - 21 EPU +/- 1.28 hours*, NHATS target
6.85 LD Jan. 16 2019 YD3 21 m  7.13 to 7.50 LD Jan. 9 - 22 NHATS target
7.43 LD tomorrow 2020 AM3 35 m  7.51 from 8.95 LD yesterday - Jan. 20 DOU
7.92 LD yesterday 2020 AN3 288 m  8.71 to 10.90 LD Jan. 15 - 18 exits ten LD, risk - DOU
8.23 LD Jan. 16 2020 AZ1 16 m  8.42 to 8.64 LD Jan. 9 - 22 NHATS target - DOU
9.08 LD yesterday 2020 AD1 19 m  9.09 to 9.15 LD Jan. 13 - 22 NHATS target - DOU
* 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  12.89 from 14.14 LD Jan. 21 - 28 NHATS target - DOU

This report was generated at 1945 UTC with follow-up in today's DOU MPEC for approaching 2020 AK3, inbound 2020 AM3, five outbound objects: 2020 AL3, 2020 AZ1, 2020 AD1, 2019 YF4, and risk-listed 2020 AN3, departed objects 2020 AH3 and risk-listed 2020 AY1, and distant 2016 BC14.

See also our new "Earth's Busy Neighborhood" page for more 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. "Distant" is used here to describe an object under observation that has approached Earth within ten LD since A/CC began these traffic reports almost thirteen years ago but is not currently coming so close. Object temporal distances are derived by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 18 January '20

The MPC's NEO Confirmation Page has 49 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 49 objects listed. Of these, 32 were "one nighters." So far The Tracking News has counted a total of 61 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 18 January '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-B06 - "15:00 UT" - 2015 BK509


<< DOU on 18 January '20 >>  MPEC 2020-B05 - "12:03 UT" - Daily Orbit Update

Observers  on 18 January '20

A total of 24 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2020-B05 -- 2019 YV3, 2019 YO4, 2019 YK4, 2019 WX, 2019 UB11, 2019 SF2
T05ATLAS Haleakala in Hawaii, 2 in MPEC 2020-B05 -- 349063, 162825
160Castelmartini Obs. in Italy, 5 in MPEC 2020-B05 -- 2013 PV2, 86326, 34613, 141052, 5626
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPEC 2020-B05 -- 2020 AU, 2020 AQ2, 2020 AM, 2020 AL, 2019 YO4, 2019 NM1, 2017 DQ37, 2009 NH
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 7 in MPECs 2020-B05 & 2020-B06 -- 2020 AV2, 2020 AN3, 2020 AK3, 2020 AJ3, 2019 XO2, 2015 XW377, 2015 BK509
J95Great Shefford Obs. in England, 10 in MPEC 2020-B05 -- 2020 AQ3, 2020 AQ1, 2020 AN3, 2020 AM3, 2020 AL3, 2020 AK3, 2020 AH3, 2020 AH1, 2020 AD1, 2019 YA5
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-B05 -- 2014 NF64
246KLENOT in the Czech Republic, 1 in MPEC 2020-B05 -- 2020 AY1
130Lumezzane Obs. in Italy, 12 in MPEC 2020-B05 -- 2020 AQ1, 2020 AD3, 2019 YK4, 2013 AW52, 2012 BU61, 2012 BD124, 2004 BT58, 427778, 416231, 416002, 310442, 163373
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-B05 -- 106589
474Mt. John Obs. in New Zealand, 7 in MPEC 2020-B05 -- 2020 AZ1, 2019 YY5, 2019 YW3, 2019 YJ4, 2019 XC1, 2019 WE5, 2019 TH7
K74Muensterschwarzach Obs. in Germany, 2 in MPEC 2020-B05 -- 2020 AQ1, 248926
J69North Obs. in England, 2 in MPEC 2020-B05 -- 2020 AM3, 2015 OX78
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2020-B05 -- 159504, 103067, 1864
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2020-B05 -- 2019 BJ5, 2017 TO4, 2016 WJ8, 2016 EZ157
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2020-B05 -- 2019 YM2
C95SATINO-1 in France, 1 in MPEC 2020-B05 -- 2015 HU116
691Spacewatch 0.9m telescope in Arizona, 10 in MPEC 2020-B05 -- 2019 YF4, 2019 XY2, 2019 WR6, 2019 WG4, 2019 UO9, 2019 OA5, 2019 MS3, 2017 BP31, 2011 YB40, 2011 UC292
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2020-B05 -- 2020 AS1, 2019 YF4, 2019 WX4, 2019 WO4, 2019 WH1, 2019 VP5, 2019 SU, 2015 MT96
I52Steward Obs. Mt. Lemmon Station in Arizona, 32 in MPEC 2020-B05 -- 2020 AZ2, 2020 AW1, 2020 AQ1, 2020 AO3, 2020 AL3, 2020 AK3, 2020 AJ3, 2020 AG1, 2019 YV3, 2019 YU3, 2019 YS4, 2019 YR6, 2019 YQ5, 2019 YP4, 2019 YM3, 2019 YM2, 2019 YL4, 2019 YK4, 2019 YH4, 2019 YE4, 2019 YE2, 2019 YD5, 2019 YC5, 2019 XW2, 2019 XA3, 2019 WF3, 2019 VE1, 2019 US12, 2019 OA5, 2019 MS3, 2017 SN14, 2016 BC14
G33Wickede Obs. in Germany, 1 in MPEC 2020-B05 -- 137199
C51WISE in Earth polar orbit, 5 in MPEC 2020-B05 -- 2006 XF2, 96744, 85628, 483878, 153842
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2020-B05 -- 18172, 9400, 1620
I41Zwicky Transient Facility in southern California, 1 in MPEC 2020-B05 -- 427778
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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 AN3NEODyS2300210612.33e-06-3.50-3.50NEODyS: "Based on 136 optical observations (of which 3 are rejected as outliers) from 2019-11-09.148 to 2020-01-17.873."
JPL Sentry16452106-210618.826e-07-3.90-3.900JPL: Computed at 05:47 today Pacific time based on 127 observations spanning 69.725 days (2019-Nov-09.147003 to 2020-Jan-17.872451). Diameter approximately 0.290 km. from weighted mean H=20.35.
2020 AY1NEODyS2300210319.23e-08-7.49-7.490NEODyS: "Based on 100 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-01-16.964."
2019 YP3NEODyS2300211111.21e-07-7.67-7.670NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2019-12-27.534 to 2020-01-17.328."
2019 YW2NEODyS23002113-211523.73e-08-7.24-7.30NEODyS: "Based on 126 optical observations (of which 4 are rejected as outliers) from 2019-12-24.514 to 2020-01-17.300."
2019 WG2NEODyS23002093-2118803.1e-05-4.66-5.00NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2019-11-24.496 to 2020-01-16.105."
2019 UN8NEODyS23002093-2114106.23e-07-8.48-8.990NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2019-10-25.250 to 2019-10-29.505."

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 18 January '20

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

2300Noted that NEODyS has updated its 2019 UN8 risk assessment - see above
Noted that NEODyS has updated its 2019 WG2 risk assessment - see above
Noted that NEODyS has updated its 2019 YP3 risk assessment - see above
Noted that NEODyS has updated its 2019 YW2 risk assessment - see above
Noted that NEODyS has updated its 2020 AN3 risk assessment - see above
Noted that NEODyS has updated its 2020 AY1 risk assessment - see above
1945Generated Traffic Report
1645Noted that JPL Sentry has updated its 2020 AN3 risk assessment - see above
Grabbed MPEC 2020-B05 - Daily Orbit Update - see above
Grabbed MPEC 2020-B06 - 2015 BK509 - see above