Contents  on 19 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 19 January '19

Nine objects reported inside ten LD

There are nine minor planets being tracked within ten lunar distances (LD) of our planet today. Nearest is 2019 AG7, outbound from 6.07 to 7.29 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  9.73 to 11.68 LD Jan. 9 - 19 NHATS target, exits ten LD, risk
3.14 LD Jan. 12 2019 AT13 14 m  7.97 to 9.08 LD Jan. 4 - 20 NHATS target
3.92 LD Jan. 15 2019 AG7 28 m  6.07 to 7.29 LD Jan. 9 - 22 NHATS target - DOU
5.60 LD Jan. 12 2018 YU2 18 m  8.89 to 9.70 LD Jan. 4 - 20 NHATS target
6.95 LD Jan. 23 2019 AS11 15 m  7.55 from 7.98 LD Jan. 15 - 30 NHATS target
7.45 LD today 2019 AB5 27 m  7.45 LD Jan. 15 - 24 Earth closest at 2255 UTC
7.60 LD Jan. 13 2019 AR2 47 m  9.64 to 10.36 LD Jan. 7 - 19 NHATS target, exits ten LD - DOU
7.64 LD Jan. 16 2019 AU9 15 m  8.18 to 8.65 LD Jan. 10 - 22 NHATS target - DOU
8.08 LD Jan. 15 2019 AT6 10 m  9.19 to 9.77 LD Jan. 10 - 20 NHATS target

This report was generated at 2220 UTC with follow-up in today's DOU MPEC for outbound objects 2019 AU9, 2019 AG7, and 2019 AR2, and for departed risk-listed intruder 2019 AW2, along with astrometry for eleven other objects from last September or November.

Approaching - sorted by 10-LD bubble entry date
7.6   LD Jan. 25* 2019 AJ13 8 m  10.2 from 11.1 LD tomorrow - Jan. 29 EPU +/- 5 mins.*, NHATS target
8.59 LD Jan. 25 2019 AG11 19 m  12.66 from 13.96 LD Jan. 22 - 28
5.6   LD Jan. 26* 2019 AA10 26 m  15.2 from 17.2 LD Jan. 22 - 30 EPU +/- 8.72 hours*
9.1   LD Jan. 25* 2019 AN12 28 m  25.0 from 29.3 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 19 January '19

The MPC's NEO Confirmation Page has 77 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 77 objects listed. Of these, 38 were "one nighters." So far The Tracking News has counted a total of 81 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 19 January '19

Minor Planet Electronic Circulars

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


<< DOU on 19 Jan. '19 >>  MPEC 2019-B54 - "13:08 UT" - Daily Orbit Update


MPEC 2019-B53 - "11:42 UT" - 2019 BL


MPEC 2019-B52 - "11:37 UT" - 2019 BK

Observers  on 19 January '19

A total of 23 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 43 in MPEC 2019-B54 -- 2018 XT, 2018 WY2, 2018 WA, 2018 VZ1, 2018 VX, 2018 VW1, 2018 VU6, 2018 VN5, 2018 VL3, 2018 VK5, 2018 VK1, 2018 VG5, 2018 VG3, 2018 VC, 2018 UZ, 2018 UG3, 2018 UA1, 2018 TV4, 2018 TU2, 2018 TT1, 2018 TQ2, 2018 TG5, 2018 TA, 2018 SX2, 2018 SR3, 2018 SK3, 2018 SA3, 2018 RY3, 2018 RL, 2018 RA3, 2018 QZ, 2018 NR, 2018 LU15, 2018 LS2, 2018 GJ1, 2018 FJ4, 2016 VH2, 2015 UH51, 2013 TS132, 2012 BN11, 2011 UD256, 2009 ME9, 2004 FW1
T05ATLAS Haleakala in Hawaii, 71 in MPECs 2019-B52 & 2019-B54 -- 2019 BK, 2018 GX4, 2014 XR6, 2012 MM11, 2010 GT7, 2002 VE68, 99799, 88263, 68950, 68216, 54401, 523824, 523815, 523803, 523779, 523641, 523628, 523610, 483472, 457260, 455550, 442742, 414960, 412995, 381564, 376864, 37336, 33342, 31345, 265661, 25916, 250162, 244670, 228502, 217807, 21277, 208617, 20790, 18736, 186822, 18109, 180186, 17274, 170891, 16834, 162004, 155110, 154656, 141498, 141079, 140928, 137084, 137032, 13553, 12538, 11398, 6456, 6178, 5797, 5646, 5143, 5131, 4401, 3691, 3200, 2212, 2061, 1943, 1916, 1627, 719
T08ATLAS Mauna Loa in Hawaii, 49 in MPECs 2019-B52 & 2019-B54 -- 2019 BK, 2002 VE68, 2001 WO15, 99799, 96315, 88263, 68216, 65706, 54789, 54401, 523805, 523631, 523628, 523604, 523587, 518463, 457260, 412995, 33342, 308043, 265661, 25916, 242147, 217807, 208617, 20790, 20460, 18736, 186822, 18109, 16834, 16816, 163899, 162004, 159495, 141079, 140928, 137062, 6456, 5646, 5143, 3552, 3200, 2212, 2061, 1943, 1627, 1620, 719
703Catalina Sky Survey (CSS) in Arizona, 90 in MPECs 2019-B52 & 2019-B54 -- 2019 BK, 2018 WH2, 2018 WE1, 2018 VX6, 2018 VU6, 2018 VF3, 2018 TS, 2018 TK2, 2018 TC3, 2018 RL, 2018 QN1, 2018 PE22, 2018 GX4, 2015 YU7, 2015 WY1, 2014 XR6, 2012 MM11, 2012 GS5, 2011 WM46, 2011 AA37, 2010 GT7, 2009 XV1, 2007 VD12, 2006 WR127, 2003 NW1, 2002 VE68, 2001 VC2, 99799, 88263, 65674, 55532, 54401, 52387, 523815, 523803, 523631, 523604, 523603, 523595, 518735, 518635, 518463, 457260, 457212, 455550, 454177, 442742, 438429, 427643, 414960, 414903, 413002, 397847, 37336, 31345, 303174, 25916, 253106, 250697, 250162, 244670, 242147, 217807, 208617, 18109, 17274, 170891, 16834, 163818, 162687, 162004, 154300, 141079, 140928, 138937, 138852, 137805, 137062, 13553, 12538, 11398, 7482, 4401, 3552, 3288, 3200, 1916, 1865, 1627, 719
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPEC 2019-B54 -- 2019 AU9, 2019 AS7
L29Drebach-South Obs., 1 in MPEC 2019-B52 -- 2019 BK
006Fabra Obs. in Spain, 2 in MPEC 2019-B54 -- 2003 NW1, 457260
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2019-B52 -- 2019 BK
E89Geyserland Obs. in New Zealand, 2 in MPEC 2019-B54 -- 512244, 418929
H15ISON New Mexico Obs. in New Mexico, 3 in MPEC 2019-B54 -- 2010 GT7, 442742, 414903
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-B52 -- 2019 BK
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2019-B52 -- 2019 BK
695^Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2019-B54 -- 2018 TC3
G96Mt. Lemmon Survey (MLS) in Arizona, 76 in MPEC 2019-B54 -- 2018 XR, 2018 WP2, 2018 WP, 2018 WN2, 2018 WH1, 2018 VZ8, 2018 VY5, 2018 VX, 2018 VS9, 2018 VM3, 2018 VH1, 2018 VF3, 2018 VC5, 2018 UJ1, 2018 TS5, 2018 RU5, 2018 QN1, 2018 PE22, 2018 NR, 2018 LQ15, 2016 WZ7, 2015 XY378, 2015 MQ101, 2014 XR6, 2014 MP60, 2013 XH4, 2013 WU45, 2013 VE13, 2011 XE1, 2011 HE24, 2011 AA37, 2010 MR, 2010 MF1, 2008 YR2, 2008 WX32, 2008 WP1, 2006 WR127, 2005 WF57, 2005 WF4, 2002 GA, 2001 XG1, 1999 RB32, 96315, 85804, 65996, 54401, 52387, 523604, 512245, 481025, 457260, 447903, 446938, 444627, 424482, 420262, 419829, 382459, 381564, 380476, 354182, 34613, 333707, 329395, 325769, 285638, 228368, 170891, 162004, 159495, 155334, 141056, 5324, 3552, 3200, 2212
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2019-B54 -- 2014 XR6, 523610, 256412
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2019-B53 -- 2019 BL
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2019-B53 -- 2019 BL
C95SATINO-1 in France, 1 in MPEC 2019-B54 -- 137802
204Schiaparelli Obs. in Italy, 17 in MPEC 2019-B54 -- 2019 AX, 2019 AW7, 2019 AT3, 2019 AR2, 2019 AQ3, 2019 AN2, 2019 AM6, 2019 AK10, 2019 AH10, 2019 AG7, 2018 YS, 2018 XU2, 2018 XR, 2016 AZ8, 2013 LH16, 2013 BW76, 2011 WS2
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-B54 -- 2019 AR5
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2019-B54 -- 2015 HV171, 31345, 5751
I52Steward Obs. Mt. Lemmon Station in Arizona, 15 in MPECs 2019-B52, 2019-B53 & 2019-B54 -- 2019 BL, 2019 BK, 2019 AS6, 2019 AR4, 2019 AP6, 2019 AM13, 2019 AM10, 2019 AK10, 2019 AG7, 2018 YZ1, 2018 YH, 2018 WL1, 2018 WE1, 2018 VZ9, 2016 FA4
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2019-B54 -- 2019 AW2, 2019 AG12, 2018 YW2, 2018 XG5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 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 AG12JPL Sentry18002091-209112.572e-08-7.26-7.260JPL: Computed at 08:54 today Pacific time based on 14 observations spanning 5.9429 days (2019-Jan-11.52794 to 2019-Jan-17.470826). Diameter approximately 0.055 km. from weighted mean H=23.95.
2019 AW2JPL Sentry18002072-207212.851e-06-5.65-5.650JPL: Computed at 08:45 today Pacific time based on 39 observations spanning 13.929 days (2019-Jan-03.47489 to 2019-Jan-17.403565). Diameter approximately 0.030 km. from weighted mean H=25.28.
2018 YW2JPL Sentry18002050-208136.376e-07-5.81-6.190JPL: Computed at 08:48 today Pacific time based on 56 observations spanning 17.133 days (2018-Dec-31.52399 to 2019-Jan-17.657165). Diameter approximately 0.054 km. from weighted mean H=23.98.
2018 WH1JPL Sentry18002076-2112141.101333e-05-7.12-7.700JPL: Computed at 08:53 today Pacific time based on 69 observations spanning 16.066 days (2018-Nov-27.25828 to 2018-Dec-13.323814). Diameter approximately 0.007 km. from weighted mean H=28.52.
2018 WE1JPL Sentry18002071-207421.99e-09-9.22-9.470JPL: Computed at 09:02 today Pacific time based on 88 observations spanning 17.896 days (2018-Nov-26.46885 to 2018-Dec-14.36487). Diameter approximately 0.021 km. from weighted mean H=26.01.
2018 VCJPL Sentry18002109-211551.18266e-05-6.02-6.160JPL: Computed at 08:40 today Pacific time based on 141 observations spanning 36.008 days (2018-Nov-01.24873 to 2018-Dec-07.257089). Diameter approximately 0.019 km. from weighted mean H=26.29.

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 19 January '19

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

2220Generated Traffic Report
1800Noted that JPL Sentry has updated its 2018 VC risk assessment - see above
Noted that JPL Sentry has updated its 2018 WE1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 WH1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 YW2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AG12 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AW2 risk assessment - see above
Grabbed MPEC 2019-B52 - 2019 BK - see above
Grabbed MPEC 2019-B53 - 2019 BL - see above
Grabbed MPEC 2019-B54 - Daily Orbit Update - see above