Contents  on 1 December '13

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 1 December '13

Four objects reported inside ten LD

There are four asteroids reported passing within ten lunar distances (LD) of Earth today. Radar target 2013 NJ is outbound from 7.82 to 9.28 LD and 2013 WY from 9.03 to 9.68 LD, and intruder 2013 WH25 exits ten LD, transiting from 9.18 to 13.84 LD, while 2013 WV43 enters our ten-LD reporting "bubble," coming in from 10.40 to 9.75 LD.

This report was updated at 1756 UTC with follow-up in today's DOU MPEC for 2013 WY and 2013 NJ. Today's first traffic report was generated at 1623 UTC.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Object distances are interpreted 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 1 December '13

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 78 listings on the NEOCP today.

New MPECs  on 1 December '13

Minor Planet Electronic Circulars

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


<< OOC on 1 Dec. '13 >> MPEC 2013-X10 - "21:00 UT" - Observations and Orbits of Comets


MPEC 2013-X09 - "18:24 UT" - 2010 SH15


MPEC 2013-X08 - "18:16 UT" - 2003 QF70


<< DOU on 1 Dec. '13 >>  MPEC 2013-X07 - "17:32 UT" - Daily Orbit Update


MPEC 2013-X06 - "14:17 UT" - 2013 WW45


MPEC 2013-X05 - "14:11 UT" - 2013 WV45


MPEC 2013-X04 - "14:04 UT" - 2013 WU45


MPEC 2013-X03 - "13:58 UT" - 2013 WT45


MPEC 2013-X02 - "13:52 UT" - 2013 WS45


MPEC 2013-X01 - "13:44 UT" - 2013 WR45

Observers  on 1 December '13

A total of 87 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 12 in MPEC 2013-X10 -- C/2013 V5, C/2013 V4, C/2013 V3, C/2013 V1, C/2013 N4, P/2013 J2, C/2012 X1, C/2012 A2, C/2011 J2, 290P, 154P, 2P
J24Altamira Obs. in the Canary Islands, 12 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2013 V1, C/2013 R1, P/2013 J2, C/2012 J1, C/2012 F6, C/2012 A2, 292P, 291P, 154P, 119P
Z74Amanecer de Arrakis Obs., 2 in MPEC 2013-X10 -- C/2013 V3, 154P
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-X07 -- 2013 WS45
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPECs 2013-X01, 2013-X02, 2013-X03, 2013-X04, 2013-X05, 2013-X06, 2013-X07, 2013-X08 & 2013-X09 -- 2013 WW45, 2013 WV45, 2013 WU45, 2013 WT45, 2013 WT43, 2013 WS45, 2013 WR45, 2010 SH15, 2003 QF70
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-X10 -- 154P
300Bisei Spaceguard Center in Japan, 2 in MPECs 2013-X04 & 2013-X07 -- 2013 WU45, 2013 VK5
C86Blanes Obs. in Spain, 1 in MPEC 2013-X10 -- 290P
I99Blanquita Obs. in Spain, 3 in MPECs 2013-X07 & 2013-X10 -- C/2013 V1, 2013 NJ, 290P
Q68Blue Mountains Obs. in New South Wales, 5 in MPEC 2013-X10 -- C/2013 V5, C/2013 E2, C/2011 F1, 292P, 119P
215Buchloe Obs. in Germany, 5 in MPEC 2013-X10 -- C/2013 V4, C/2013 V2, C/2013 US10, C/2013 U2, 154P
W96Campo Catino Austral Obs. (CAO) in Chile, 7 in MPEC 2013-X10 -- C/2013 V1, C/2013 N4, C/2013 A1, C/2012 V2, C/2009 P1, 154P, 32P
I72Carpe Noctem Obs., 12 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2013 R1, C/2012 X1, C/2012 J1, C/2011 J2, C/2010 S1, 290P, 257P, 154P, 119P, 4P
160Castelmartini Obs. in Italy, 3 in MPEC 2013-X10 -- C/2010 S1, 154P, 119P
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2013-X02, 2013-X04 & 2013-X10 -- 2013 WU45, 2013 WS45, C/2013 V4, C/2013 V3, C/2013 V1, 291P, 269P, 257P, 184P
K51Celado Obs., 1 in MPEC 2013-X10 -- P/2013 R3
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2013-X02, 2013-X06 & 2013-X07 -- 2013 WW45, 2013 WT44, 2013 WT43, 2013 WS45, 2013 VF13, 2013 UG9, 2013 UE3, 2013 QG17, 2013 JT22, 2013 GG69, 144900, 13651
I84Cerro del Viento Obs., 2 in MPEC 2013-X10 -- 290P, 154P
A77Chante-Perdrix Obs. in France, 13 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2013 R1, C/2012 X1, C/2012 A2, C/2010 S1, 292P, 290P, 257P, 184P, 154P, 124P, 4P
B92Chinon Obs. in France, 2 in MPEC 2013-X10 -- C/2013 V1, 154P
J01Cielo Profundo Obs. in Spain, 9 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2013 V1, C/2012 X1, C/2011 J2, C/2009 F4, 290P, 270P, 84P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2013-X10 -- C/2012 A2
958Dax Obs. in France, 3 in MPECs 2013-X03, 2013-X04 & 2013-X06 -- 2013 WW45, 2013 WU45, 2013 WT45
I57Elche Obs., 2 in MPEC 2013-X10 -- C/2013 R1, 154P
006Fabra Obs. in Spain, 1 in MPEC 2013-X07 -- 2010 CL19
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-X07 -- 2010 CL19
G26Fushan Obs., 3 in MPEC 2013-X10 -- C/2013 V3, C/2012 F6, 154P
372Geisei Obs. in Japan, 4 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2012 X1, 17P
203GiaGa Obs. in Italy, 2 in MPECs 2013-X03 & 2013-X06 -- 2013 WW45, 2013 WT45
E94Gisborne Obs. in New Zealand, 1 in MPEC 2013-X10 -- C/2013 V3
J95Great Shefford Obs. in England, 3 in MPECs 2013-X03, 2013-X06 & 2013-X07 -- 2013 WW45, 2013 WT45, 2010 CL19
355Hadano Obs. in Japan, 2 in MPECs 2013-X03 & 2013-X07 -- 2013 WT45, 2013 UR3
K25Haute Provence Sud Obs., 11 in MPEC 2013-X10 -- C/2013 V5, C/2013 V3, C/2013 V2, C/2013 V1, P/2013 T2, C/2013 R1, C/2013 P3, P/2013 O2, C/2012 A2, 269P, 52P
D88Hiratsuka Obs. in Japan, 5 in MPEC 2013-X10 -- C/2013 V2, C/2010 U3, C/2009 F4, 290P, 52P
J37Huelva Obs. in Spain, 1 in MPEC 2013-X10 -- C/2012 S1
D00ISON-Kislovodsk Obs., 1 in MPEC 2013-X10 -- C/2013 V3
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-X10 -- C/2013 V3
G41Insperity Obs., 4 in MPEC 2013-X07 -- 52760, 251346, 137126, 3200
C32Ka-Dar Obs. TAU Station in Russia, 3 in MPEC 2013-X10 -- C/2013 V1, C/2013 U1, P/2013 CU129
585Kiev Comet Station in the Ukraine, 8 in MPEC 2013-X10 -- C/2013 V1, P/2013 O2, C/2012 F6, C/2011 L4, C/2010 S1, C/2009 F4, 257P, 154P
D95Kurihara Obs. in Japan, 9 in MPEC 2013-X10 -- C/2013 US10, P/2013 R3, P/2013 J2, C/2013 E2, C/2012 F6, C/2010 S1, 257P, 154P, 32P
212La Dehesilla Obs. in Spain, 5 in MPEC 2013-X10 -- C/2010 S1, 154P, 119P, 102P, 4P
J38La Vara Obs. in Spain, 9 in MPEC 2013-X10 -- C/2013 V3, C/2013 V2, C/2013 V1, C/2013 R1, C/2012 J1, C/2012 F6, 290P, 154P, 119P
844Los Molinos Obs. in Uruguay, 8 in MPEC 2013-X07 -- 2013 UR3, 2013 UH9, 2013 TB80, 2013 NJ, 2010 CL19, 87684, 368664, 24445
130Lumezzane Obs. in Italy, 4 in MPEC 2013-X10 -- C/2013 US10, C/2013 P3, 110P, 32P
P34Lvye Obs., 1 in MPEC 2013-X10 -- 154P
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-X03 -- 2013 WT45
C10Maisoncelles Obs. in France, 3 in MPEC 2013-X10 -- P/2013 W1, C/2013 V5, 154P
A06Mataro Obs. in Spain, 5 in MPECs 2013-X07 & 2013-X10 -- 2013 UR3, 2010 CL19, 2003 WX25, 251346, 154P
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2013-X01 & 2013-X06 -- 2013 WW45, 2013 WR45
213Montcabre Obs. in Spain, 5 in MPEC 2013-X10 -- C/2013 R1, P/2013 O2, C/2012 X1, 154P, 4P
945Monte Deva Obs. in Spain, 1 in MPEC 2013-X10 -- 154P
C91Montevenere Obs., 4 in MPEC 2013-X10 -- 257P, 184P, 154P, 119P
900Moriyama Obs. in Japan, 9 in MPEC 2013-X10 -- C/2013 V3, C/2013 R1, P/2013 J2, C/2013 E2, C/2012 A2, C/2010 S1, 291P, 257P, 32P
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2013-X02, 2013-X05 & 2013-X10 -- 2013 WV45, 2013 WS45, 291P, 271P, 269P, 215P, 184P, 9P
J15Muxagata Obs., 1 in MPEC 2013-X10 -- C/2012 X1
A13Naef Obs. in Switzerland, 1 in MPEC 2013-X10 -- 119P
D81Nagano Obs. in Japan, 2 in MPEC 2013-X10 -- 154P, 119P
A24New Millennium Obs. in Italy, 7 in MPEC 2013-X10 -- P/2013 O2, C/2012 A1, 291P, 290P, 178P, 84P, 52P
C47Nonndorf Obs. in Austria, 10 in MPEC 2013-X10 -- C/2013 V1, C/2012 J1, C/2012 F6, C/2011 J2, C/2010 S1, 291P, 290P, 257P, 154P, 52P
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2013-X10 -- 273P
C23Olmen Obs. in Belgium, 15 in MPECs 2013-X07 & 2013-X10 -- C/2013 V2, C/2013 V1, C/2013 R1, C/2012 U1, C/2012 J1, C/2012 F6, C/2012 A2, 2010 CL19, 290P, 257P, 184P, 154P, 119P, 102P, 52P
I61Ourense Obs., 1 in MPEC 2013-X10 -- 84P
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2013-X01, 2013-X03, 2013-X06 & 2013-X10 -- 2013 WW45, 2013 WT45, 2013 WR45, P/2013 T2, P/2013 O2, P/2011 S1, 269P, 172P, 158P, 52P, 40P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2013-X10 -- C/2013 V5, C/2013 V2, C/2013 V1, C/2013 U2, C/2012 U1, C/2012 J1, C/2012 A1, 290P, 178P, 84P
D29Purple Mtn. Obs. Xuyi Station in China, 16 in MPECs 2013-X02, 2013-X07 & 2013-X10 -- 2013 WS45, 2013 TB80, 2012 ER14, C/2009 S3, 2008 JR26, 2005 RQ6, 53435, 378610, 168378, 137062, 10165, 3988, 291P, 271P, 269P, 158P
L04ROASTERR-1 Obs., 1 in MPEC 2013-X10 -- 290P
D03Rantiga Obs., 1 in MPEC 2013-X10 -- 271P
939Rodeno Obs. in Spain, 11 in MPEC 2013-X10 -- C/2013 V1, P/2013 J2, C/2012 J1, C/2012 F6, C/2012 A2, C/2010 S1, 291P, 290P, 154P, 84P, 52P
H36Sandlot Obs. in Kansas, 7 in MPECs 2013-X04, 2013-X06, 2013-X07 & 2013-X10 -- 2013 WY, 2013 WW45, 2013 WU45, 2013 WA44, 2013 VV4, 2010 CL19, 178P
B70Sant Celoni Obs. in Spain, 1 in MPEC 2013-X10 -- 52P
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-X10 -- C/2013 V3
204Schiaparelli Obs. in Italy, 6 in MPECs 2013-X01, 2013-X02, 2013-X03, 2013-X04, 2013-X05 & 2013-X06 -- 2013 WW45, 2013 WV45, 2013 WU45, 2013 WT45, 2013 WS45, 2013 WR45
G68Sierra Stars Obs. in northern California, 1 in MPEC 2013-X10 -- 257P
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-X10 -- C/2013 R1
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2013-X10 -- C/2009 S3, 291P, 178P
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2013-X07 -- 2013 WT43
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2013-X04 -- 2013 WU45
K21St. Saturnin les Avignon Obs., 6 in MPEC 2013-X10 -- C/2013 V2, C/2012 X1, C/2012 F6, 290P, 154P, 4P
I81Tarbatness Obs. in Scotland, 1 in MPEC 2013-X10 -- 290P
926Tenagra II Obs. in Arizona, 2 in MPECs 2013-X01 & 2013-X10 -- 2013 WR45, 52P
C35Terrassa Obs., 1 in MPEC 2013-X10 -- 257P
B51Vallauris Obs. in France, 3 in MPEC 2013-X10 -- C/2013 V3, C/2013 R1, C/2012 X1
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2013-X10 -- C/2013 V3
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-X10 -- C/2013 V5
I899program code 9 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-X10 -- C/2013 V3
Q62(program code "(" (17) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-X10 -- P/2013 W1
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 11 in MPEC 2013-X10 -- C/2013 S1, P/2013 R3, P/2013 P5, C/2013 P4, C/2013 O3, C/2013 G6, P/2013 CU129, 98P, 29P, 26P, 17P
Q62[program code "[" (25) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-X10 -- C/2013 A1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 December '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program 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
2013 WZ44NEODyS15572111-2112122.23e-06-6.23-6.850NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2013-11-28.412 to 2013-11-30.254."
2013 WX44NEODyS15572071-207112.18e-07-7.14-7.140NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2013-11-27.505 to 2013-11-30.167."
2013 WA44JPL Sentry2024R E M O V E DJPL: Risk listing removed at 2002 UTC.
2013 WT43JPL Sentry20242052-209352.2e-07-4.99-5.140JPL: "Analysis based on 24 observations spanning 5.0641 days (2013-Nov-26.32112 to 2013-Dec-01.38522)." Diameter approximately 0.112 km. from mean, weighted H=22.4.
2013 WR43NEODyS1557R E M O V E D-
2013 WMNEODyS15572047-210541.86e-06-4.56-4.780NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2013-11-25.247 to 2013-11-29.196."
2013 VM5NEODyS15572057-210635.0e-09-8.43-8.440NEODyS: "Based on 25 optical observations (of which 5 are rejected as outliers) from 2013-11-04.436 to 2013-11-26.420."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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 1 December '13

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

2116Grabbed MPEC 2013-X10 - Observations and Orbits of Comets - see above
2024Noted that JPL Sentry has removed 2013 WA44 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 WT43 risk assessment - see above
1839Grabbed MPEC 2013-X08 - 2003 QF70 - see above
Grabbed MPEC 2013-X09 - 2010 SH15 - see above
1756Updated Traffic Report
1753Grabbed MPEC 2013-X07 - Daily Orbit Update - see above
1557Noted that NEODyS has updated its 2013 VM5 risk assessment - see above
Noted that NEODyS has updated its 2013 WM risk assessment - see above
Noted that NEODyS has removed 2013 WR43 as an impact risk - see above
Noted that NEODyS has posted 2013 WX44 as an impact risk - see above
Noted that NEODyS has posted 2013 WZ44 as an impact risk - see above
Grabbed MPEC 2013-X01 - 2013 WR45 - see above
Grabbed MPEC 2013-X02 - 2013 WS45 - see above
Grabbed MPEC 2013-X03 - 2013 WT45 - see above
Grabbed MPEC 2013-X04 - 2013 WU45 - see above
Grabbed MPEC 2013-X05 - 2013 WV45 - see above
Grabbed MPEC 2013-X06 - 2013 WW45 - see above