Contents  on 14 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 14 January '19

Fifteen objects reported inside ten LD

Fifteen minor planets are being tracked within ten lunar distances (LD) of our planet today. Nearest is risk-listed 2019 AU6, which comes its closest to Earth this time around, reaching 2.56 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.26 LD Jan. 12 2019 AE9 13 m  6.58 to 10.86 LD Jan. 10 - 14 intruder, exits ten LD
2.56 LD today 2019 AU6 16 m  2.56 LD Jan. 9 - 19 NHATS target, Earth closest at 0737 UTC, risk
2.99 LD Jan. 10 2019 AD 10 m  5.43 to 6.50 LD Jan. 2 - 18 NHATS target
3.46 LD Jan. 7 2019 AR7 15 m  6.83 to 7.65 LD Dec. 28 - Jan. 17 NHATS target
3.92 LD tomorrow 2019 AG7 29 m  4.18 from 4.92 LD Jan. 9 - 22 NHATS target, risk - DOU
4.13 LD Jan. 12 2019 AC9 24 m  4.92 to 6.43 LD Jan. 8 - 16
4.87 LD Jan. 12 2019 AK3 13 m  5.77 to 7.33 LD Jan. 9 - 16
5.60 LD Jan. 12 2018 YU2 18 m  5.90 to 6.29 LD Jan. 4 - 20 NHATS target
7.47 LD Jan. 10 2018 YQ2 20 m  9.03 to 9.81 LD Jan. 4 - 15 NHATS target, risk
7.60 LD yesterday 2019 AR2 47 m  7.62 to 7.76 LD Jan. 7 - 19 NHATS target - DOU
7.64 LD Jan. 16 2019 AU9 15 m  7.80 from 8.11 LD Jan. 10 - 22 NHATS target
7.76 LD Jan. 10 2013 YM2 22 m  8.63 to 9.09 LD Jan. 3 - 16 NHATS target
7.77 LD Jan. 5 2019 AU 16 m  9.77 to 10.23 LD Dec. 27 - today NHATS target, exits ten LD
8.08 LD tomorrow 2019 AT6 10 m  8.08 from 8.18 LD Jan. 10 - 20 NHATS target
8.62 LD tomorrow 2019 AM8 14 m  8.77 from 9.53 LD yesterday - Jan. 17 NHATS target

This report was generated at 1920 UTC with follow-up in today's DOU MPEC for inbound risk-listed 2019 AG7, outbound 2019 AR2, and departed objects 2018 XS4 and 2018 WV, plus astrometry from November-December for 163899 2003 SD220 and distant 68216 2001 CV26.

Approaching - sorted by 10-LD bubble entry date
7.45 LD Jan. 19 2019 AB5 27 m  10.50 from 11.61 LD tomorrow - Jan. 24
9.69 LD Jan. 16 2019 AR8 26 m  10.37 from 11.24 LD tomorrow - Jan. 18 NHATS target
5.6   LD Jan. 26* 2019 AA10 26 m  25.7 from 27.9 LD Jan. 22 - 30 Earth passage uncertainty +/- 8.72 hours*



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 that has approached Earth within ten LD since A/CC began these traffic reports twelve 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 14 January '19

The MPC's NEO Confirmation Page has 108 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 108 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 128 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 14 January '19

Minor Planet Electronic Circulars

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


<< DOU on 14 Jan. '19 >>  MPEC 2019-A234 - "13:06 UT" - Daily Orbit Update


MPEC 2019-A233 - "12:46 UT" - 2019 AO10


MPEC 2019-A232 - "12:42 UT" - 2019 AN10


MPEC 2019-A231 - "12:38 UT" - 2019 AM10


MPEC 2019-A230 - "12:33 UT" - 2019 AL10


MPEC 2019-A229 - "12:29 UT" - 2019 AK10


MPEC 2019-A228 - "12:25 UT" - 2019 AJ10


MPEC 2019-A227 - "12:20 UT" - 2019 AH10


MPEC 2019-A226 - "12:16 UT" - 2019 AG10


MPEC 2019-A225 - "03:18 UT" - 2016 YO3


MPEC 2019-A224 - "03:16 UT" - 2016 WU3


MPEC 2019-A223 - "03:14 UT" - 2016 UT80


MPEC 2019-A222 - "03:12 UT" - 2016 UL41


MPEC 2019-A221 - "03:09 UT" - 2016 LU9

Observers  on 14 January '19

A total of 30 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPEC 2019-A234 -- 2018 PX7, 2018 PU10, 2018 PO9, 2018 PM23, 2018 OA1, 2017 HW1, 2014 XD8, 2013 SO20, 2013 NT11, 523662, 153951, 141078
T05ATLAS Haleakala in Hawaii, 35 in MPEC 2019-A234 -- 2018 XY2, 2018 XV, 2018 XT2, 2013 VD13, 2012 GS5, 2002 VE68, 523815, 523628, 518635, 518463, 455550, 446924, 427643, 414903, 37336, 36284, 31345, 302169, 256412, 250697, 250162, 208617, 18109, 17274, 163818, 154300, 137032, 13553, 12538, 6456, 5143, 4401, 1916, 1865, 719
T08ATLAS Mauna Loa in Hawaii, 16 in MPEC 2019-A234 -- 2019 AG7, 65706, 523631, 523604, 523595, 457260, 454177, 454100, 450779, 414960, 409204, 242147, 16816, 163899, 3552, 3200
160Castelmartini Obs. in Italy, 3 in MPEC 2019-A234 -- 2011 OL5, 457260, 141498
703Catalina Sky Survey (CSS) in Arizona, 25 in MPECs 2019-A227 & 2019-A234 -- 2019 AH10, 2013 VD13, 90403, 85804, 65706, 55532, 523604, 523603, 523595, 523587, 457260, 454177, 450779, 42286, 409204, 345705, 277473, 275611, 242147, 16816, 163899, 159495, 141498, 3691, 1620
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPECs 2019-A228, 2019-A233 & 2019-A234 -- 2019 AZ3, 2019 AY8, 2019 AO3, 2019 AO10, 2019 AJ10, 2019 AB3, 2018 XS4, 2018 XF5
L29Drebach-South Obs., 1 in MPEC 2019-A233 -- 2019 AO10
L05Dridri Obs. in Italy, 1 in MPEC 2019-A234 -- 1943
K83Forti Obs., 1 in MPEC 2019-A234 -- 2019 AR2
K73Gravina Obs. in Italy, 1 in MPEC 2019-A234 -- 18109
J95Great Shefford Obs. in England, 3 in MPECs 2019-A227, 2019-A229 & 2019-A231 -- 2019 AM10, 2019 AK10, 2019 AH10
511Haute Provence Obs. in Germany, 1 in MPEC 2019-A234 -- 2019 AR3
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-A234 -- 2019 AG7
C94MASTER-II Tunka in Russia, 1 in MPEC 2019-A234 -- 308127
A06Mataro Obs. in Spain, 1 in MPEC 2019-A234 -- 2019 AA9
568^R. Wainscoat on Mauna Kea in Hawaii, 4 in MPECs 2019-A226, 2019-A229, 2019-A230 & 2019-A231 -- 2019 AM10, 2019 AL10, 2019 AK10, 2019 AG10
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2019-A234 -- 2018 SA3, 2013 PA7
474Mt. John Obs. in New Zealand, 3 in MPECs 2019-A228, 2019-A232 & 2019-A233 -- 2019 AO10, 2019 AN10, 2019 AJ10
G96Mt. Lemmon Survey (MLS) in Arizona, 16 in MPECs 2019-A228, 2019-A232, 2019-A233 & 2019-A234 -- 2019 AO10, 2019 AN10, 2019 AJ10, 2003 WY87, 523779, 520808, 518635, 446791, 31345, 244670, 192559, 17511, 140333, 13553, 11500, 4055
F51Pan-STARRS 1 (PS1) in Hawaii, 32 in MPECs 2019-A221, 2019-A222, 2019-A223, 2019-A224, 2019-A225, 2019-A226, 2019-A227, 2019-A229, 2019-A230, 2019-A231, 2019-A232, 2019-A233 & 2019-A234 -- 2019 AW3, 2019 AV6, 2019 AT9, 2019 AT4, 2019 AP8, 2019 AP3, 2019 AO10, 2019 AN6, 2019 AN10, 2019 AM10, 2019 AL10, 2019 AK10, 2019 AH10, 2019 AG10, 2019 AF3, 2018 YV, 2018 YD3, 2018 YA3, 2018 XY2, 2016 YO3, 2016 WU3, 2016 UT80, 2016 UL41, 2016 TY92, 2016 RN1, 2016 RH18, 2016 PX66, 2016 LU9, 2016 JN17, 459462, 329390, 234145
F52Pan-STARRS 2 (PS2) in Hawaii, 11 in MPEC 2019-A234 -- 2018 NB, 2017 KE35, 452314, 417612, 414903, 388567, 256670, 226514, 143624, 138893, 9058
K63Pascoli Obs. in Italy, 2 in MPECs 2019-A227 & 2019-A231 -- 2019 AM10, 2019 AH10
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2019-A229 -- 2019 AK10
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2019-A227 & 2019-A229 -- 2019 AK10, 2019 AH10
C95SATINO-1 in France, 1 in MPEC 2019-A234 -- 68216
Q21Southern Utsunomiya in Japan, 1 in MPEC 2019-A234 -- 3200
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2019-A234 -- 155140
I52Steward Obs. Mt. Lemmon Station in Arizona, 5 in MPECs 2019-A227, 2019-A228, 2019-A231, 2019-A232 & 2019-A233 -- 2019 AO10, 2019 AN10, 2019 AM10, 2019 AJ10, 2019 AH10
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2019-A234 -- 2018 XR3, 2018 WV, 2018 LM4, 523812
L01Visnjan Obs., 1 in MPEC 2019-A227 -- 2019 AH10
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 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 AG7JPL Sentry17002064-206414.883e-07-6.57-6.570JPL: Computed at 08:29 today Pacific time based on 60 observations spanning 12.962 days (2018-Dec-31.614374 to 2019-Jan-13.57594). Diameter approximately 0.029 km. from weighted mean H=25.34.
NEODyS17002064-210745.67e-08-7.52-7.530NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2018-12-31.615 to 2019-01-13.577."

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 14 January '19

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

1920Generated Traffic Report
1700Noted that JPL Sentry has updated its 2019 AG7 risk assessment - see above
Noted that NEODyS has updated its 2019 AG7 risk assessment - see above
Grabbed MPEC 2019-A226 - 2019 AG10 - see above
Grabbed MPEC 2019-A227 - 2019 AH10 - see above
Grabbed MPEC 2019-A228 - 2019 AJ10 - see above
Grabbed MPEC 2019-A229 - 2019 AK10 - see above
Grabbed MPEC 2019-A230 - 2019 AL10 - see above
Grabbed MPEC 2019-A231 - 2019 AM10 - see above
Grabbed MPEC 2019-A232 - 2019 AN10 - see above
Grabbed MPEC 2019-A233 - 2019 AO10 - see above
Grabbed MPEC 2019-A234 - Daily Orbit Update - see above
0437Grabbed MPEC 2019-A221 - 2016 LU9 - see above
Grabbed MPEC 2019-A222 - 2016 UL41 - see above
Grabbed MPEC 2019-A223 - 2016 UT80 - see above
Grabbed MPEC 2019-A224 - 2016 WU3 - see above
Grabbed MPEC 2019-A225 - 2016 YO3 - see above