Contents  on 10 January '19

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 10 January '19

Fifteen objects reported inside ten LD

Fifteen small celestial objects are reported passing inside ten lunar distances (LD) of our planet today. Nearest is 2019 AD, wich comes its closest to Earth this time around, reaching 2.99 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
0.04 LD Jan. 8 2019 AS5 1 m  4.57 to 6.87 LD Jan. 3 - 12 intruder, NHATS target, risk - DOU
2.56 LD Jan. 14 2019 AU6 16 m  7.12 from 9.01 LD yesterday - Jan. 19 NHATS target, risk
2.99 LD today 2019 AD 10 m  2.99 LD Jan. 2 - 18 NHATS target, Earth closest at 0848 UTC - DOU
3.46 LD Jan. 7 2019 AR7 15 m  4.07 to 4.64 LD Dec. 28 - Jan. 17 NEW - MPEC
3.92 LD Jan. 15 2019 AG7 29 m  8.50 from 9.88 LD yesterday - Jan. 22 NEW, risk - MPEC
4.87 LD Jan. 12 2019 AK3 13 m  6.37 from 8.12 LD yesterday - Jan. 16
5.60 LD Jan. 12 2018 YU2 18 m  5.72 from 6.02 LD Jan. 4 - 20 NHATS target - DOU
7.47 LD today 2018 YQ2 20 m  7.47 LD Jan. 4 - 15 NHATS target, Earth closest at 0006 UTC, risk
7.60 LD Jan. 13 2019 AR2 47 m  8.12 from 8.56 LD Jan. 7 - 19 NHATS target - DOU
7.76 LD today 2013 YM2 19 m  7.76 LD Jan. 3 - 16 NHATS target, Earth closest at 0128 UTC
7.77 LD Jan. 5 2019 AU 16 m  8.32 to 8.61 LD Dec. 27 - Jan. 14 NHATS target
7.8   LD Jan. 6* 2018 XO4 30 m  8.3 to 8.6 LD Dec. 30 - Jan. 13 EPU +/- 17 mins.*, NHATS target
8.1   LD Jan. 15* 2019 AT6 10 m  9.4 from 10.0 LD today - Jan. 20 EPU +/- 5 mins.*, NHATS target, enters ten LD - DOU
9.17 LD Jan. 4 2019 AX3 11 m  9.93 to 10.24 LD Dec. 30 - today NHATS target, exits ten LD
9.47 LD yesterday 2019 AX5 22 m  9.73 to 10.50 LD Jan. 7 - 10 exits ten LD - DOU
* EPU = Earth passage uncertainty

This report was generated at 1940 UTC with the discoveries of inbound risk-listed 2019 AG7 (MPEC) and outbound 2019 AR7 (MPEC), and with follow-up in today's DOU MPEC for inbound objects 2019 AT6, 2019 AR2, and 2018 YU2, passing 2019 AD, outbound objects 2019 AX5 and risk-listed intruder 2019 AS5, and risk-listed departed 2019 AQ2.

Approaching
7.5   LD Jan. 19* 2019 AB5 26 m  15.4 from 16.7 LD Jan. 15 - 24 EPU +/- 21 mins.*



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. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 10 January '19

The MPC's NEO Confirmation Page has 93 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 93 objects listed. Of these, 34 were "one nighters." So far The Tracking News has counted a total of 131 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 10 January '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 25 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-A167 - "22:34 UT" - 2016 BT39


MPEC 2019-A166 - "20:44 UT" - Comet P/2019 A3 (Panstarrs)


MPEC 2019-A165 - "18:00 UT" - 2016 PX66


MPEC 2019-A164 - "16:02 UT" - 2019 AL7


MPEC 2019-A163 - "15:58 UT" - 2019 AK7


MPEC 2019-A162 - "15:53 UT" - 2019 AH7


MPEC 2019-A161 - "15:48 UT" - 2019 AV7


MPEC 2019-A160 - "15:44 UT" - 2019 AU7


MPEC 2019-A159 - "15:39 UT" - 2019 AT7


MPEC 2019-A158 - "15:34 UT" - 2019 AS7


MPEC 2019-A157 - "15:29 UT" - 2019 AR7


MPEC 2019-A156 - "15:24 UT" - 2019 AQ7


MPEC 2019-A155 - "15:17 UT" - 2019 AP7


MPEC 2019-A154 - "15:08 UT" - 2019 AO7


MPEC 2019-A153 - "15:01 UT" - 2019 AN7


MPEC 2019-A152 - "14:55 UT" - 2019 AM7


MPEC 2019-A151 - "14:49 UT" - 2019 AJ7


<< DOU on 10 Jan. '19 >>  MPEC 2019-A150 - "13:07 UT" - Daily Orbit Update


MPEC 2019-A149 - "11:51 UT" - 2019 AG7


MPEC 2019-A148 - "11:38 UT" - 2017 YT5


MPEC 2019-A147 - "11:36 UT" - 2017 YQ3


MPEC 2019-A146 - "11:33 UT" - 2017 YZ1


MPEC 2019-A145 - "11:31 UT" - 2016 NZ55


MPEC 2019-A144 - "11:29 UT" - 2015 BJ92


MPEC 2019-A143 - "11:27 UT" - 2014 QR362

Observers  on 10 January '19

A total of 36 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2019-A150, 2019-A154 & 2019-A165 -- 2019 AT4, 2019 AO7, 2018 WP2, 2018 VZ8, 2018 VE4, 2018 EA1, 2016 PX66, 2013 BM76, 1994 XG, 267940, 162433
T05ATLAS Haleakala in Hawaii, 2 in MPECs 2019-A150 & 2019-A157 -- 2019 AR7, 2019 AP6
T08ATLAS Mauna Loa in Hawaii, 5 in MPECs 2019-A150 & 2019-A157 -- 2019 AR7, 2019 AR2, 2018 WR1, 2015 YU7, 2007 NL1
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-A154 -- 2019 AO7
160Castelmartini Obs. in Italy, 3 in MPEC 2019-A150 -- 2018 XV, 2003 NW1, 523604
703Catalina Sky Survey in Arizona, 1 in MPEC 2019-A149 -- 2019 AG7
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 3 in MPECs 2019-A151, 2019-A155 & 2019-A156 -- 2019 AQ7, 2019 AP7, 2019 AJ7
K51Celado Obs. in Italy, 2 in MPECs 2019-A154 & 2019-A164 -- 2019 AO7, 2019 AL7
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 16 in MPECs 2019-A149, 2019-A150, 2019-A151, 2019-A152, 2019-A155, 2019-A156, 2019-A158, 2019-A159, 2019-A160, 2019-A162, 2019-A163 & 2019-A164 -- 2019 AY4, 2019 AW4, 2019 AU7, 2019 AT7, 2019 AS7, 2019 AQ7, 2019 AP7, 2019 AM7, 2019 AM2, 2019 AL7, 2019 AK7, 2019 AJ7, 2019 AH7, 2019 AG7, 2019 AC5, 2018 RL
Z45Cosmos Obs., 2 in MPEC 2019-A150 -- 2061, 1943
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 11 in MPECs 2019-A143, 2019-A144, 2019-A145, 2019-A149, 2019-A150, 2019-A153, 2019-A157, 2019-A163 & 2019-A164 -- 2019 AR7, 2019 AQ2, 2019 AN7, 2019 AL7, 2019 AK7, 2019 AG7, 2019 AC3, 2018 XG5, 2016 NZ55, 2015 BJ92, 2014 QR362
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2019-A149 -- 2019 AG7
K88GINOP-KHK in Hungary, 1 in MPEC 2019-A154 -- 2019 AO7
J95Great Shefford Obs. in England, 6 in MPECs 2019-A149, 2019-A150, 2019-A154, 2019-A157 & 2019-A163 -- 2019 AX5, 2019 AR7, 2019 AO7, 2019 AK7, 2019 AG7, 2019 AD
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-A160 -- 2019 AU7
K38M57 Obs. in Italy, 1 in MPEC 2019-A154 -- 2019 AO7
D54MASTER-II Blagoveshchensk in Russia, 1 in MPEC 2019-A150 -- 308127
C94MASTER-II Tunka in Russia, 1 in MPEC 2019-A150 -- 308127
568^R. Wainscoat on Mauna Kea in Hawaii, 6 in MPECs 2019-A151, 2019-A153, 2019-A158, 2019-A159, 2019-A160 & 2019-A166 -- 2019 AU7, 2019 AT7, 2019 AS7, 2019 AN7, 2019 AJ7, P/2019 A3
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2019-A154, 2019-A156 & 2019-A167 -- 2019 AQ7, 2019 AO7, 2016 BT39
Z80Northolt Branch Obs. in England, 5 in MPEC 2019-A150 -- 2019 AR3, 2019 AR2, 2019 AD5, 2018 XV, 2018 XR
I41Palomar Transient Factory (PTF) in southern California, 4 in MPEC 2019-A150 -- 2013 VD13, 217628, 153591, 2062
F51Pan-STARRS 1 (PS1) in Hawaii, 29 in MPECs 2019-A146, 2019-A147, 2019-A148, 2019-A149, 2019-A150, 2019-A151, 2019-A152, 2019-A153, 2019-A155, 2019-A156, 2019-A158, 2019-A159, 2019-A160, 2019-A161, 2019-A163, 2019-A164, 2019-A166 & 2019-A167 -- 2019 AV7, 2019 AU7, 2019 AT7, 2019 AT6, 2019 AS7, 2019 AS, 2019 AQ7, 2019 AP7, 2019 AN7, 2019 AM7, 2019 AM5, 2019 AL7, 2019 AK7, 2019 AJ7, 2019 AG7, P/2019 A3, 2018 YV, 2018 TP2, 2018 EA1, 2017 YZ1, 2017 YT5, 2017 YQ3, 2017 XO60, 2016 BT39, 2015 BR515, 2014 YC, 2008 SW11, 512234, 137924
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2019-A166 -- P/2019 A3
K63Pascoli Obs. in Italy, 2 in MPECs 2019-A154 & 2019-A163 -- 2019 AO7, 2019 AK7
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2019-A166 -- P/2019 A3
104San Marcello Pistoiese Obs. in Italy, 3 in MPECs 2019-A154, 2019-A163 & 2019-A164 -- 2019 AO7, 2019 AL7, 2019 AK7
C95SATINO-1 in France, 1 in MPEC 2019-A150 -- 42286
204Schiaparelli Obs. in Italy, 2 in MPECs 2019-A153 & 2019-A154 -- 2019 AO7, 2019 AN7
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2019-A145 & 2019-A150 -- 2019 AX, 2018 YU2, 2016 NZ55, 2009 AS
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2019-A150, 2019-A154 & 2019-A163 -- 2019 AO7, 2019 AL2, 2019 AK7, 2019 AB3
I52Steward Obs. Mt. Lemmon Station in Arizona, 9 in MPECs 2019-A149, 2019-A150, 2019-A152, 2019-A153, 2019-A154, 2019-A157, 2019-A159, 2019-A163 & 2019-A164 -- 2019 AT7, 2019 AS6, 2019 AR7, 2019 AO7, 2019 AN7, 2019 AM7, 2019 AL7, 2019 AK7, 2019 AG7
381Tokyo-Kiso Obs. in Japan, 1 in MPEC 2019-A150 -- 2019 AD
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPECs 2019-A150, 2019-A151 & 2019-A162 -- 2019 AS5, 2019 AJ7, 2019 AH7
L01Visnjan Obs., 8 in MPECs 2019-A149, 2019-A150, 2019-A153, 2019-A154, 2019-A161, 2019-A163, 2019-A164 & 2019-A166 -- 2019 AX5, 2019 AV7, 2019 AO7, 2019 AN7, 2019 AL7, 2019 AK7, 2019 AG7, P/2019 A3
C51WISE in Earth polar orbit, 1 in MPEC 2019-A162 -- 2019 AH7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 January '19

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
2019 AG7NEODyS17052064-210871.11e-05-5.25-5.580NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2018-12-31.615 to 2019-01-10.244."
JPL Sentry16402064-210857.50361e-06-5.42-5.460JPL: Computed at 05:14 today Pacific time based on 31 observations spanning 9.6286 days (2018-Dec-31.614374 to 2019-Jan-10.24297). Diameter approximately 0.029 km. from weighted mean H=25.33.
2019 AU6NEODyS16402068-2118301.3e-05-5.94-6.43-NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2019-01-02.573 to 2019-01-09.335."
2019 AS5NEODyS17052074-211771.78e-07-10.47-10.880NEODyS #2 for the day: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2019-01-08.359 to 2019-01-09.466."
JPL Sentry16402085-209427.586e-08-10.85-10.90JPL: Computed at 07:48 today Pacific time based on 18 observations spanning 1.1061 days (2019-Jan-08.35867 to 2019-Jan-09.46477). Diameter approximately 0.001 km. from weighted mean H=32.30.
2019 AC3JPL Sentry16402084-2118190.000351105732-4.91-4.950JPL: Computed at 07:48 today Pacific time based on 17 observations spanning 6.4791 days (2019-Jan-03.58822 to 2019-Jan-10.067363). Diameter approximately 0.012 km. from weighted mean H=27.22.
2019 AW2NEODyS16402029-210891.33e-06-5.94-6.20NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2019-01-03.476 to 2019-01-08.997."
2019 AQ2NEODyS17052076-2114381.45e-06-6.53-6.790NEODyS #2 for the day: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2019-01-03.330 to 2019-01-09.891."
JPL Sentry16402090-211361.03715e-06-6.67-7.010JPL: Computed at 07:47 today Pacific time based on 45 observations spanning 6.5602 days (2019-Jan-03.32957 to 2019-Jan-09.889771). Diameter approximately 0.026 km. from weighted mean H=25.58.
2018 YW2NEODyS16402050-210153.42e-07-5.98-6.10NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2018-12-31.525 to 2019-01-09.449."
2018 YQ2NEODyS16402077-211841.95e-07-7.70-7.91-NEODyS: "Based on 52 optical observations (of which 1 are rejected as outliers) from 2018-12-31.159 to 2019-01-09.110."
2018 YO2NEODyS16402066-211291.77e-07-9.51-9.940NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2018-12-29.447 to 2019-01-08.348."
2018 XG5JPL Sentry16402083-208312.619e-07-4.37-4.370JPL: Computed at 07:35 today Pacific time based on 50 observations spanning 27.518 days (2018-Dec-13.39431 to 2019-Jan-09.912283). Diameter approximately 0.300 km. from weighted mean H=20.27.
NEODyS1640208312.19e-07-4.48-4.480NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2018-12-13.395 to 2019-01-09.085."
2018 XB4NEODyS16402066-2118678.03e-05-3.91-4.04-NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2018-12-13.344 to 2019-01-09.163."
2014 HN198NEODyS16402021-21151471.89e-08-7.89-8.90NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2014-04-28.050 to 2014-04-29.037."
2005 NX55NEODyS16402020-21081863.4e-08-5.39-6.470NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2005-07-11.164 to 2005-07-12.298."

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 10 January '19

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

2302Grabbed MPEC 2019-A167 - 2016 BT39 - see above
2101Grabbed MPEC 2019-A166 - Comet P/2019 A3 (Panstarrs) - see above
1940Generated Traffic Report
1804Grabbed MPEC 2019-A165 - 2016 PX66 - see above
1705Noted that NEODyS has posted 2019 AG7 as an impact risk - see above
Noted that NEODyS has updated its 2019 AQ2 risk assessment - see above
Noted that NEODyS has updated its 2019 AS5 risk assessment - see above
1640Noted that NEODyS has updated its 2005 NX55 risk assessment - see above
Noted that NEODyS has updated its 2014 HN198 risk assessment - see above
Noted that NEODyS has updated its 2018 XB4 risk assessment - see above
Noted that JPL Sentry has updated its 2018 XG5 risk assessment - see above
Noted that NEODyS has updated its 2018 XG5 risk assessment - see above
Noted that NEODyS has updated its 2018 YO2 risk assessment - see above
Noted that NEODyS has updated its 2018 YQ2 risk assessment - see above
Noted that NEODyS has updated its 2018 YW2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AC3 risk assessment - see above
Noted that JPL Sentry has posted 2019 AG7 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 AQ2 risk assessment - see above
Noted that NEODyS has updated its 2019 AQ2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AS5 risk assessment - see above
Noted that NEODyS has posted 2019 AS5 as an impact risk - see above
Noted that NEODyS has posted 2019 AU6 as an impact risk - see above
Noted that NEODyS has updated its 2019 AW2 risk assessment - see above
Grabbed MPEC 2019-A143 - 2014 QR362 - see above
Grabbed MPEC 2019-A144 - 2015 BJ92 - see above
Grabbed MPEC 2019-A145 - 2016 NZ55 - see above
Grabbed MPEC 2019-A146 - 2017 YZ1 - see above
Grabbed MPEC 2019-A147 - 2017 YQ3 - see above
Grabbed MPEC 2019-A148 - 2017 YT5 - see above
Grabbed MPEC 2019-A149 - 2019 AG7 - see above
Grabbed MPEC 2019-A150 - Daily Orbit Update - see above
Grabbed MPEC 2019-A151 - 2019 AJ7 - see above
Grabbed MPEC 2019-A152 - 2019 AM7 - see above
Grabbed MPEC 2019-A153 - 2019 AN7 - see above
Grabbed MPEC 2019-A154 - 2019 AO7 - see above
Grabbed MPEC 2019-A155 - 2019 AP7 - see above
Grabbed MPEC 2019-A156 - 2019 AQ7 - see above
Grabbed MPEC 2019-A157 - 2019 AR7 - see above
Grabbed MPEC 2019-A158 - 2019 AS7 - see above
Grabbed MPEC 2019-A159 - 2019 AT7 - see above
Grabbed MPEC 2019-A160 - 2019 AU7 - see above
Grabbed MPEC 2019-A161 - 2019 AV7 - see above
Grabbed MPEC 2019-A162 - 2019 AH7 - see above
Grabbed MPEC 2019-A163 - 2019 AK7 - see above
Grabbed MPEC 2019-A164 - 2019 AL7 - see above