Contents  on 18 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 18 January '19

Eleven objects reported inside ten LD

Eleven transient natural objects are known to be inside ten lunar distances (LD) of Earth today. Nearest is 2019 AG7, which travels outward from 5.01 to 6.07 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
2.56 LD Jan. 14 2019 AU6 16 m  7.81 to 9.73 LD Jan. 9 - 19 NHATS target, risk
2.99 LD Jan. 10 2019 AD 10 m  9.96 to 11.14 LD Jan. 2 - 18 NHATS target, exits ten LD
3.14 LD Jan. 12 2019 AT13 14 m  6.88 to 7.97 LD Jan. 4 - 20 NHATS target
3.92 LD Jan. 15 2019 AG7 28 m  5.01 to 6.07 LD Jan. 9 - 22 NHATS target - DOU
5.60 LD Jan. 12 2018 YU2 18 m  8.13 to 8.89 LD Jan. 4 - 20 NHATS target
6.95 LD Jan. 23 2019 AS11 15 m  7.98 from 8.50 LD Jan. 15 - 30 NHATS target
7.45 LD tomorrow 2019 AB5 27 m  7.59 from 8.00 LD Jan. 15 - 24
7.60 LD Jan. 13 2019 AR2 47 m  9.01 to 9.64 LD Jan. 7 - 19 NHATS target - DOU
7.64 LD Jan. 16 2019 AU9 15 m  7.85 to 8.18 LD Jan. 10 - 22 NHATS target
8.08 LD Jan. 15 2019 AT6 10 m  8.71 to 9.19 LD Jan. 10 - 20 NHATS target
9.69 LD Jan. 16 2019 AR8 26 m  9.96 to 10.61 LD Jan. 15 - 18 NHATS target, exits ten LD

This report was generated at 2020 UTC with precovery observations of 2018 EJ4 (MPEC) from 2011, 2014, and 2017, and with follow-up in today's DOU MPEC for approaching risk-listed 2019 AG11, outbound objects 2019 AR2 and risk-listed 2019 AG7, and departed risk-listed 2019 AK12, plus astrometry for 68216 2001 CV26 and observation from March 2017 of risk-listed 2017 FB102.

Approaching - sorted by 10-LD bubble entry date
7.6   LD Jan. 25* 2019 AJ13 8 m  11.1 from 12.2 LD Jan. 20 - 29 EPU +/- 5 mins.*, NHATS target
8.59 LD Jan. 25 2019 AG11 19 m  13.96 from 15.34 LD Jan. 22 - 28 DOU
5.6   LD Jan. 26* 2019 AA10 26 m  17.2 from 19.3 LD Jan. 22 - 30 EPU +/- 8.72 hours*
9.1   LD Jan. 25* 2019 AN12 28 m  29.3 from 33.7 LD Jan. 24 - 25 EPU +/- 18 mins.*
* EPU = Earth passage uncertainty



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 18 January '19

The MPC's NEO Confirmation Page has 79 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 79 objects listed. Of these, 40 were "one nighters." The Tracking News counted a total of 84 listings on the NEOCP on this day.

New MPECs  on 18 January '19

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there were five MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-B51 - "15:25 UT" - 2019 AW13


MPEC 2019-B50 - "15:19 UT" - 2019 AV13


<< DOU on 18 Jan. '19 >>  MPEC 2019-B49 - "13:09 UT" - Daily Orbit Update


MPEC 2019-B48 - "12:16 UT" - Comet C/2018 Y1 (Iwamoto)


MPEC 2019-B47 - "03:22 UT" - 2018 EJ4

Observers  on 18 January '19

A total of 47 observers appeared in this day's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 1 in MPEC 2019-B48 -- C/2018 Y1
349Ageo Obs. in Japan, 1 in MPEC 2019-B48 -- C/2018 Y1
E23Arcadia Obs. in New South Wales, 1 in MPEC 2019-B51 -- 2019 AW13
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2019-B49 -- 2018 VQ8, 2018 VN3, 2018 UQ2, 2018 TQ2, 2018 TC3
T05ATLAS Haleakala in Hawaii, 144 in MPECs 2019-B49 & 2019-B51 -- 2019 AW13, 2019 AR2, 2018 XV, 2018 TC3, 2018 KV, 2017 YH, 2016 CA136, 2016 AZ8, 2014 XR6, 2013 LH16, 2012 MM11, 2011 OL5, 2007 YQ56, 2006 OH15, 2005 YY36, 2004 XP14, 2003 NW1, 2002 XC91, 99799, 90403, 88263, 86324, 68950, 68346, 68216, 66272, 65706, 55532, 54789, 523824, 523779, 523610, 523604, 523595, 523587, 512245, 512244, 488789, 480885, 476904, 459462, 459458, 458122, 457260, 455550, 454177, 454101, 450238, 442742, 422787, 418929, 418849, 417581, 414960, 412995, 410088, 409204, 40263, 382825, 381677, 380476, 376864, 37336, 36284, 349068, 345813, 345722, 345705, 33342, 325769, 325395, 31345, 31210, 308127, 275611, 267221, 25916, 250697, 244670, 242147, 231134, 228502, 217807, 21277, 21088, 20790, 20460, 18736, 186822, 18109, 180186, 164120, 163902, 163693, 163081, 163051, 159608, 154656, 154652, 153243, 152742, 141498, 141484, 141053, 140928, 139359, 138937, 138925, 138859, 138175, 137925, 137805, 137802, 137084, 136793, 12711, 12538, 11398, 7358, 6456, 6455, 6178, 5879, 5751, 5646, 5143, 5131, 4957, 4596, 4401, 4055, 3691, 3552, 3200, 3199, 2212, 2061, 1980, 1943, 1916, 1863, 1627, 1620, 719
T08ATLAS Mauna Loa in Hawaii, 31 in MPECs 2019-B48 & 2019-B49 -- 2019 AR5, C/2018 Y1, 2018 GX4, 2005 YY36, 88263, 68216, 523610, 455550, 442742, 417581, 376864, 325395, 31345, 31210, 25916, 250697, 250162, 21088, 18109, 17274, 139359, 137032, 12538, 5587, 5143, 4401, 3199, 1917, 1916, 1627, 719
215Buchloe Obs. in Germany, 1 in MPEC 2019-B48 -- C/2018 Y1
W96Campo Catino Austral Obs. in Chile, 1 in MPEC 2019-B48 -- C/2018 Y1
703Catalina Sky Survey (CSS) in Arizona, 21 in MPEC 2019-B49 -- 2016 CA136, 2005 YY36, 2005 CL7, 523824, 458122, 417581, 39796, 35107, 31210, 25916, 22771, 21088, 163902, 139359, 108519, 9162, 5646, 5587, 4596, 1866, 1627
A77Chante-Perdrix Obs. in France, 1 in MPEC 2019-B48 -- C/2018 Y1
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2019-B48 -- C/2018 Y1
Z39Costa Teguise Obs. in the Canary Islands, 1 in MPEC 2019-B48 -- C/2018 Y1
W84%program code "%" (14) via DECam in Chile, 1 in MPEC 2019-B49 -- 2017 FB102
L29Drebach-South Obs., 1 in MPEC 2019-B51 -- 2019 AW13
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPEC 2019-B49 -- 2017 BL3, 2016 TL18
006Fabra Obs. in Spain, 1 in MPEC 2019-B49 -- 18109
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2019-B50 -- 2019 AV13
D88Hiratsuka Obs. in Japan, 1 in MPEC 2019-B48 -- C/2018 Y1
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2019-B48 -- C/2018 Y1
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-B48 -- C/2018 Y1
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-B48 -- C/2018 Y1
Q67JBL Obs., 1 in MPEC 2019-B48 -- C/2018 Y1
D95Kurihara Obs. in Japan, 1 in MPEC 2019-B48 -- C/2018 Y1
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-B49 -- 2019 AN13
213Montcabre Obs. in Spain, 1 in MPEC 2019-B48 -- C/2018 Y1
474Mt. John Obs. in New Zealand, 1 in MPEC 2019-B48 -- C/2018 Y1
G96Mt. Lemmon Survey (MLS) in Arizona, 23 in MPEC 2019-B49 -- 2019 AZ2, 2019 AV6, 2019 AV4, 2019 AO8, 2019 AD5, 2018 YB3, 2018 XY2, 2018 XU6, 2015 BY310, 2010 MR, 2009 SV17, 2004 BY21, 523805, 482054, 352102, 204232, 185851, 153243, 141053, 138937, 137802, 100085, 3671
Z80Northolt Branch Obs. in England, 1 in MPEC 2019-B49 -- 2019 AA9
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2019-B47, 2019-B49 & 2019-B50 -- 2019 AV13, 2019 AM6, 2018 EJ4, 2005 GE60, 68346, 523811, 516155, 481542, 459386, 418929, 387717, 381906, 32906, 21088, 154656, 153249
F52Pan-STARRS 2 (PS2) in Hawaii, 12 in MPEC 2019-B49 -- 2019 AV4, 2018 XY2, 2009 SV17, 2006 CU, 99935, 85804, 397847, 265661, 154656, 153243, 137802, 3691
323Perth Obs. in Western Australia, 1 in MPEC 2019-B48 -- C/2018 Y1
D29Purple Mtn. Obs. Xuyi Station in China, 19 in MPEC 2019-B49 -- 2015 YE21, 68063, 511684, 453778, 382825, 33342, 31210, 234145, 230111, 185851, 163902, 153243, 138925, 6178, 5646, 5131, 4015, 1916, 1863
C95SATINO-1 in France, 1 in MPEC 2019-B49 -- 137084
204Schiaparelli Obs. in Italy, 1 in MPEC 2019-B50 -- 2019 AV13
Y28Sertao de Itaparica Obs. (OASI) in Brazil, 2 in MPEC 2019-B49 -- 2017 BL3, 2016 TL18
Q11Shinshiro Obs., 1 in MPEC 2019-B48 -- C/2018 Y1
G40Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-B48 -- C/2018 Y1
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPECs 2019-B48 & 2019-B49 -- C/2018 Y1, 2016 AZ8
W88Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-B48 -- C/2018 Y1
W88%program code "%" (14) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-B48 -- C/2018 Y1
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 2 in MPECs 2019-B48 & 2019-B51 -- 2019 AW13, C/2018 Y1
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-B49 -- 2019 AR5
Q21Southern Utsunomiya in Japan, 1 in MPEC 2019-B48 -- C/2018 Y1
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2019-B49 -- 2018 TO1, 417581, 31345
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2019-B50 -- 2019 AV13
Q38Swan Hill Obs., 1 in MPEC 2019-B48 -- C/2018 Y1
461SZTE Asteroid Program in Hungary, 1 in MPEC 2019-B48 -- C/2018 Y1
J22Tacande Obs. in the Canary Islands, 1 in MPEC 2019-B48 -- C/2018 Y1
I81Tarbatness Obs. in Scotland, 1 in MPEC 2019-B48 -- C/2018 Y1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 7 in MPEC 2019-B49 -- 2019 AP11, 2019 AO8, 2019 AK12, 2019 AG7, 2019 AG11, 2019 AC3, 2018 XB4
K41Vegaquattro Obs. in Italy, 1 in MPEC 2019-B49 -- 2019 AO7
L01Visnjan Obs., 1 in MPEC 2019-B50 -- 2019 AV13
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 January '19

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
2019 AK12JPL Sentry17302101-211941.10739e-06-7.34-7.710JPL: Computed at 08:15 today Pacific time based on 31 observations spanning 2.9658 days (2019-Jan-14.442192 to 2019-Jan-17.407977). Diameter approximately 0.011 km. from weighted mean H=27.49.
2019 AP11JPL Sentry1730R E M O V E DJPL: Risk listing removed at 1620 UTC today
2019 AG11JPL Sentry1730R E M O V E DJPL: Risk listing removed at 1607 UTC today
NEODyS1730R E M O V E D-
2019 AG7JPL Sentry1730R E M O V E DJPL: Risk listing removed at 1617 UTC today
2019 AC3JPL Sentry17302091-211887.266133e-05-5.60-5.610JPL: Computed at 08:04 today Pacific time based on 39 observations spanning 13.875 days (2019-Jan-03.58822 to 2019-Jan-17.46289). Diameter approximately 0.012 km. from weighted mean H=27.24.
2018 XB4JPL Sentry17302052-2118220.000112691486-3.76-3.800JPL: Computed at 07:43 today Pacific time based on 59 observations spanning 32.892 days (2018-Dec-13.34358 to 2019-Jan-15.23541). Diameter approximately 0.054 km. from weighted mean H=23.97.
2017 FB102JPL Sentry17302054-211351.7873e-07-7.67-8.040JPL: Computed at 07:33 today Pacific time based on 33 observations spanning 6.2426 days (2017-Mar-27.25836 to 2017-Apr-02.50099). Diameter approximately 0.015 km. from weighted mean H=26.80.

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 '19

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

2020Generated Traffic Report
1730Noted that JPL Sentry has updated its 2017 FB102 risk assessment - see above
Noted that JPL Sentry has updated its 2018 XB4 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AC3 risk assessment - see above
Noted that JPL Sentry has removed 2019 AG11 as an impact risk - see above
Noted that NEODyS has removed 2019 AG11 as an impact risk - see above
Noted that JPL Sentry has removed 2019 AG7 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 AK12 risk assessment - see above
Noted that JPL Sentry has removed 2019 AP11 as an impact risk - see above
Grabbed MPEC 2019-B48 - Comet C/2018 Y1 (Iwamoto) - see above
Grabbed MPEC 2019-B49 - Daily Orbit Update - see above
Grabbed MPEC 2019-B50 - 2019 AV13 - see above
Grabbed MPEC 2019-B51 - 2019 AW13 - see above
0517Grabbed MPEC 2019-B47 - 2018 EJ4 - see above