Contents  on 13 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 13 January '19

Sixteen objects reported inside ten LD

Sixteen asteroidal objects are reported within ten lunar distances (LD) of Earth today. Nearest are intruder 2019 AE9, which exits Earth's sphere of gravitational influence, flying away from 2.31 to 6.58 LD, and risk-listed 2019 AU6, inbound from 3.68 to 2.64 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 yesterday 2019 AE9 13 m  2.31 to 6.58 LD Jan. 10 - 14 intruder, exits Earth SOI
2.56 LD tomorrow 2019 AU6 16 m  2.64 from 3.68 LD Jan. 9 - 19 NHATS target, risk - DOU
2.99 LD Jan. 10 2019 AD 10 m  4.45 to 5.43 LD Jan. 2 - 18 NHATS target
3.46 LD Jan. 7 2019 AR7 15 m  6.04 to 6.83 LD Dec. 28 - Jan. 17 NHATS target - DOU
3.92 LD Jan. 15 2019 AG7 29 m  4.92 from 5.96 LD Jan. 9 - 22 NHATS target, risk - DOU
4.13 LD yesterday 2019 AC9 24 m  4.15 to 4.92 LD Jan. 8 - 16
4.87 LD yesterday 2019 AK3 13 m  4.92 to 5.77 LD Jan. 9 - 16 DOU
5.60 LD yesterday 2018 YU2 18 m  5.66 to 5.90 LD Jan. 4 - 20 NHATS target - DOU
7.47 LD Jan. 10 2018 YQ2 20 m  8.38 to 9.03 LD Jan. 4 - 15 NHATS target, risk
7.60 LD today 2019 AR2 47 m  7.60 LD Jan. 7 - 19 NHATS target, Earth closest at 1428 UTC
7.64 LD Jan. 16 2019 AU9 15 m  8.11 from 8.56 LD Jan. 10 - 22 NEW, NHATS target - MPEC, DOU
7.76 LD Jan. 10 2013 YM2 22 m  8.25 to 8.63 LD Jan. 3 - 16 NHATS target
7.77 LD Jan. 5 2019 AU 16 m  9.34 to 9.77 LD Dec. 27 - tomorrow NHATS target
7.8   LD Jan. 6* 2018 XO4 30 m  9.5 to 10.1 LD Dec. 30 - today EPU +/- 17 mins.*, NHATS target, exits ten LD
8.08 LD Jan. 15 2019 AT6 10 m  8.18 from 8.44 LD Jan. 10 - 20 NHATS target
8.62 LD Jan. 15 2019 AM8 14 m  9.53 from 10.81 LD today - Jan. 17 NHATS target, enters ten LD
* EPU = Earth passage uncertainty

This report was generated at 2157 UTC with the discoveries announced late yesterday of inbound 2019 AU9 (MPEC, DOU) and today of approaching 2019 AA10 (MPEC), and with follow-up in today's DOU MPEC for departed objects 2019 AL6 and 2019 AT and for six objects in the active traffic tables above and below, plus observation of distant 2009 UC19 from November.

Approaching - sorted by 10-LD bubble entry date
7.45 LD Jan. 19 2019 AB5 27 m  11.61 from 12.79 LD Jan. 15 - 24 DOU
9.69 LD Jan. 16 2019 AR8 26 m  11.24 from 12.38 LD Jan. 15 - 18 NHATS target
5.6   LD Jan. 26* 2019 AA10 26 m  27.9 from 30.1 LD Jan. 22 - 30 NEW, EPU +/- 8.72 hours* - MPEC



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 come within ten LD since A/CC began these traffic reports (2007) but is not so close currently. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 13 January '19

The MPC's NEO Confirmation Page has 114 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 114 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 122 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 13 January '19

Minor Planet Electronic Circulars

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


MPEC 2019-A220 - "16:39 UT" - 2019 AA10


MPEC 2019-A219 - "16:32 UT" - 2019 AZ9


MPEC 2019-A218 - "16:27 UT" - 2019 AY9


<< DOU on 13 Jan. '19 >>  MPEC 2019-A217 - "13:36 UT" - Daily Orbit Update


MPEC 2019-A216 - "13:07 UT" - 2017 NQ6


MPEC 2019-A215 - "13:04 UT" - 2017 MW7


MPEC 2019-A214 - "13:01 UT" - 2017 FE128


MPEC 2019-A213 - "12:58 UT" - 2017 EN


MPEC 2019-A212 - "12:56 UT" - 2017 DR36


MPEC 2019-A211 - "12:53 UT" - 2017 BK123


MPEC 2019-A210 - "12:49 UT" - 2017 BG85


MPEC 2019-A209 - "12:47 UT" - 2017 BL6


MPEC 2019-A208 - "12:44 UT" - 2016 PT8


MPEC 2019-A207 - "01:04 UT" - 2017 RD15


MPEC 2019-A206 - "00:53 UT" - 2017 SN17


MPEC 2019-A205 - "00:51 UT" - 2017 SE19

Observers  on 13 January '19

A total of 40 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 29 in MPECs 2019-A208 & 2019-A217 -- 2019 AR6, 2019 AL6, 2019 AG2, 2018 XB4, 2018 TO6, 2018 SX2, 2018 OB1, 2018 LX15, 2016 PT8, 2016 PL66, 2014 YM44, 2013 NT11, 2013 DQ9, 2012 GS5, 2011 AW55, 2009 UC19, 2006 QS89, 2005 MX1, 2003 WY87, 2002 RO137, 523662, 498918, 38239, 357028, 354182, 322775, 235086, 153951, 3360
T05ATLAS Haleakala in Hawaii, 8 in MPECs 2019-A208 & 2019-A217 -- 2019 AR3, 2019 AD5, 2019 AA9, 2016 PT8, 2009 SV17, 2007 NL1, 418929, 1627
T08ATLAS Mauna Loa in Hawaii, 5 in MPEC 2019-A217 -- 2002 VE68, 523811, 442742, 2340, 2061
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-A208 -- 2016 PT8
U63Burnt Tree Hill Obs., 1 in MPEC 2019-A217 -- 523815
160Castelmartini Obs. in Italy, 13 in MPEC 2019-A217 -- 2018 WR1, 2018 TC3, 2007 YU56, 2004 XP14, 99799, 450238, 33342, 242147, 217807, 18109, 4401, 3200, 1916
703Catalina Sky Survey (CSS) in Arizona, 89 in MPEC 2019-A217 -- 2011 OL5, 2009 SV17, 2006 OH15, 2004 PX27, 2004 FW1, 2002 AA2, 2001 VC2, 99935, 90403, 54789, 523824, 523811, 523803, 523641, 523631, 523628, 523603, 518735, 518640, 518635, 518463, 516803, 512245, 511684, 509505, 480885, 476904, 459462, 458122, 453778, 427643, 422787, 419829, 410088, 381677, 376864, 37336, 36183, 345813, 345705, 33342, 318411, 31345, 31210, 25916, 253106, 244670, 231134, 228502, 22771, 217807, 217796, 21277, 21088, 204232, 186822, 185851, 18109, 170891, 163818, 159608, 154656, 152931, 139359, 138859, 138175, 137924, 137805, 137802, 137032, 13553, 12711, 12538, 11311, 108519, 9856, 7482, 6178, 5646, 5143, 5131, 4055, 3691, 2340, 1916, 1865, 1627, 1620, 719
K51Celado Obs. in Italy, 1 in MPEC 2019-A208 -- 2016 PT8
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 16 in MPECs 2019-A217, 2019-A218, 2019-A219 & 2019-A220 -- 2019 AZ9, 2019 AZ3, 2019 AY9, 2019 AY3, 2019 AV9, 2019 AU9, 2019 AS9, 2019 AS7, 2019 AP9, 2019 AO7, 2019 AL7, 2019 AK7, 2019 AJ3, 2019 AB5, 2019 AA10, 2018 XF5
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2019-A208 -- 2016 PT8
L29Drebach-South Obs., 1 in MPEC 2019-A217 -- 2007 YU56
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2019-A208 -- 2016 PT8
006Fabra Obs. in Spain, 1 in MPEC 2019-A217 -- 2002 VE68
K83Forti Obs., 3 in MPEC 2019-A217 -- 2009 SV17, 523604, 457260
157Frasso Sabino Obs. in Italy, 1 in MPEC 2019-A217 -- 2004 XP14
203GiaGa Obs. in Italy, 1 in MPEC 2019-A208 -- 2016 PT8
J95Great Shefford Obs. in England, 1 in MPEC 2019-A208 -- 2016 PT8
I89'Steven M. Tilley in Louisiana via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2019-A217 -- 2018 XV
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-A218 -- 2019 AY9
Z21LCO Tenerife Aqawan A#1 in the Canary Islands, 1 in MPEC 2019-A217 -- 2016 AZ8
K38M57 Obs. in Italy, 2 in MPECs 2019-A208 & 2019-A217 -- 2016 PT8, 2007 YU56
C94MASTER-II Tunka in Russia, 1 in MPEC 2019-A217 -- 308127
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2019-A219 & 2019-A220 -- 2019 AZ9, 2019 AA10
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2019-A217 -- 2016 WZ7
474Mt. John Obs. in New Zealand, 3 in MPEC 2019-A217 -- 2019 AG7, 2019 AC3, 2018 YU2
G96Mt. Lemmon Survey (MLS) in Arizona, 68 in MPECs 2019-A208, 2019-A217 & 2019-A218 -- 2019 AY9, 2018 FJ4, 2017 KE35, 2016 VS5, 2016 PT8, 2015 XC1, 2015 SF20, 2012 GS5, 96744, 523815, 523811, 523803, 523779, 523628, 523610, 520808, 468005, 455550, 452314, 446924, 442742, 438429, 417612, 414903, 382395, 376864, 349068, 329571, 31210, 306595, 303174, 302169, 256412, 252558, 250697, 250162, 244670, 234145, 230111, 226198, 225312, 224926, 21088, 186822, 18109, 163818, 163081, 162168, 162149, 155140, 155110, 154300, 152952, 143643, 138925, 137802, 137032, 136635, 12538, 11398, 6456, 5863, 5587, 5131, 4055, 3838, 2329, 1865
F51Pan-STARRS 1 (PS1) in Hawaii, 25 in MPECs 2019-A205, 2019-A206, 2019-A207, 2019-A209, 2019-A210, 2019-A211, 2019-A212, 2019-A213, 2019-A214, 2019-A215, 2019-A216, 2019-A217, 2019-A218, 2019-A219 & 2019-A220 -- 2019 AZ9, 2019 AY9, 2019 AT4, 2019 AT, 2019 AN6, 2019 AN2, 2019 AL8, 2019 AF3, 2019 AA10, 2017 SN17, 2017 SE19, 2017 RD15, 2017 NQ6, 2017 MW7, 2017 GM7, 2017 FE128, 2017 EN, 2017 DR36, 2017 BL6, 2017 BK123, 2017 BG85, 2017 AM4, 2015 YE21, 2007 YU56, 480885
K63Pascoli Obs. in Italy, 1 in MPEC 2019-A208 -- 2016 PT8
B49Paus Obs. in Spain, 2 in MPECs 2019-A208 & 2019-A217 -- 2016 PT8, 2007 YU56
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2019-A208 -- 2016 PT8
233San Vito Obs. in Italy, 1 in MPEC 2019-A217 -- 2061
C95SATINO-1 in France, 1 in MPEC 2019-A217 -- 65706
204Schiaparelli Obs. in Italy, 8 in MPECs 2019-A208 & 2019-A217 -- 2019 AR7, 2019 AR5, 2019 AK3, 2019 AG7, 2019 AC, 2019 AB5, 2018 VB9, 2016 PT8
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-A217 -- 2019 AG7
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2019-A217 -- 2014 YR43, 2009 FU23, 2007 NL1, 2007 HW4, 88263, 442742, 34613
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2019-A217 -- 2018 YW2
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2019-A208 -- 2016 PT8
I52Steward Obs. Mt. Lemmon Station in Arizona, 9 in MPECs 2019-A208, 2019-A217, 2019-A218 & 2019-A219 -- 2019 AZ9, 2019 AY9, 2019 AY3, 2019 AQ5, 2019 AP6, 2018 YW2, 2018 XN, 2018 WR1, 2016 PT8
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2019-A217 -- 2019 AU6, 2019 AG7, 2018 YW2
L01Visnjan Obs., 2 in MPECs 2019-A208 & 2019-A217 -- 2016 PT8, 2007 YU56
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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 AG7JPL Sentry17302064-206411.228e-06-6.17-6.170JPL: Computed at 09:07 today Pacific time based on 54 observations spanning 11.969 days (2018-Dec-31.614374 to 2019-Jan-12.583386). Diameter approximately 0.029 km. from weighted mean H=25.32.
NEODyS17302064-210922.04e-06-5.96-5.960NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2018-12-31.615 to 2019-01-12.584."
2019 AU6JPL Sentry17302064-2103119.676968e-05-4.86-5.110JPL: Computed at 08:54 today Pacific time based on 29 observations spanning 10.008 days (2019-Jan-02.571913 to 2019-Jan-12.579984). Diameter approximately 0.016 km. from weighted mean H=26.57.
NEODyS17302064-2118302.94e-04-4.37-4.58n/aNEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2019-01-02.573 to 2019-01-12.581."
2019 AC3JPL Sentry17302091-2118100.0003422066-4.92-4.930JPL: Computed at 08:35 today Pacific time based on 31 observations spanning 8.9773 days (2019-Jan-03.58822 to 2019-Jan-12.565526). Diameter approximately 0.012 km. from weighted mean H=27.24.
NEODyS17302091-2118222.95e-04-5.00-5.33n/aNEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2019-01-03.589 to 2019-01-12.566."
2018 YW2JPL Sentry17302050-208131.5957e-06-5.37-5.620JPL: Computed at 08:28 today Pacific time based on 51 observations spanning 12.000 days (2018-Dec-31.52399 to 2019-Jan-12.52421). Diameter approximately 0.055 km. from weighted mean H=23.95.
NEODyS17302050-210154.44e-07-5.86-5.950NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2018-12-31.525 to 2019-01-12.525."
2018 XB4JPL Sentry17302052-2118378.48304845e-05-3.87-3.990JPL: Computed at 08:34 today Pacific time based on 55 observations spanning 28.902 days (2018-Dec-13.34358 to 2019-Jan-11.24526). Diameter approximately 0.054 km. from weighted mean H=23.97.
NEODyS17302066-2118678.48e-05-3.89-4.0n/aNEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2018-12-13.344 to 2019-01-11.246."

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 13 January '19

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

2157Generated Traffic Report
1730Noted that JPL Sentry has updated its 2018 XB4 risk assessment - see above
Noted that NEODyS has updated its 2018 XB4 risk assessment - see above
Noted that JPL Sentry has updated its 2018 YW2 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 NEODyS has updated its 2019 AC3 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AG7 risk assessment - see above
Noted that NEODyS has updated its 2019 AG7 risk assessment - see above
Noted that JPL Sentry has updated its 2019 AU6 risk assessment - see above
Noted that NEODyS has updated its 2019 AU6 risk assessment - see above
Grabbed MPEC 2019-A208 - 2016 PT8 - see above
Grabbed MPEC 2019-A209 - 2017 BL6 - see above
Grabbed MPEC 2019-A210 - 2017 BG85 - see above
Grabbed MPEC 2019-A211 - 2017 BK123 - see above
Grabbed MPEC 2019-A212 - 2017 DR36 - see above
Grabbed MPEC 2019-A213 - 2017 EN - see above
Grabbed MPEC 2019-A214 - 2017 FE128 - see above
Grabbed MPEC 2019-A215 - 2017 MW7 - see above
Grabbed MPEC 2019-A216 - 2017 NQ6 - see above
Grabbed MPEC 2019-A217 - Daily Orbit Update - see above
Grabbed MPEC 2019-A218 - 2019 AY9 - see above
Grabbed MPEC 2019-A219 - 2019 AZ9 - see above
Grabbed MPEC 2019-A220 - 2019 AA10 - see above
0145Grabbed MPEC 2019-A205 - 2017 SE19 - see above
Grabbed MPEC 2019-A206 - 2017 SN17 - see above
Grabbed MPEC 2019-A207 - 2017 RD15 - see above