Contents  on 21 November '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 21 November '13

Three objects reported inside ten LD

There are three objects reported to be within ten lunar distances (LD) of our planet today. Within Earth's Hill sphere, radar target 2001 AV43 is outbound from 3.41 to 3.87 LD. Further out, radar target is inbound from 2013 NJ from 8.22 to 6.77 LD and 2013 VK13 is outbound from 8.76 to 9.87 LD.

This report was generated at 1615 UTC.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. 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 21 November '13

The MPC's NEO Confirmation Page has 6 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six objects listed. So far The Tracking News has counted a total of seven listings on the NEOCP today.

New MPECs  on 21 November '13

Minor Planet Electronic Circulars

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


<< DOU on 21 Nov. '13 >>  MPEC 2013-W08 - "17:16 UT" - Daily Orbit Update


<< OOC on 21 Nov. '13 >> MPEC 2013-W07 - "17:02 UT" - Observations and Orbits of Comets

Observers  on 21 November '13

A total of 50 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 9 in MPEC 2013-W07 -- C/2013 V5, C/2013 V4, C/2013 V3, C/2013 V2, C/2013 V1, C/2013 R1, C/2012 X1, C/2012 S1, 2P
J24Altamira Obs. in the Canary Islands, 17 in MPEC 2013-W07 -- C/2013 V3, C/2013 V2, C/2013 V1, C/2013 R1, P/2013 J2, C/2012 J1, C/2012 F6, C/2012 A2, C/2011 J2, C/2010 S1, C/2009 F4, 292P, 291P, 257P, 154P, 17P, 4P
Z74Amanecer de Arrakis Obs., 2 in MPEC 2013-W07 -- C/2013 R1, C/2012 S1
C34Baja Obs. in Hungary, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, C/2011 J2, 290P
C89Belgrade Obs. Vidojevica Station in Serbia, 1 in MPEC 2013-W07 -- C/2013 V1
C86Blanes Obs. in Spain, 3 in MPEC 2013-W07 -- C/2013 R1, C/2012 X1, C/2012 S1
I99Blanquita Obs. in Spain, 2 in MPEC 2013-W07 -- C/2012 S1, 154P
821Bosque Alegre Obs. in Argentina, 1 in MPEC 2013-W08 -- 2013 GG69
B96Brixiis Obs. in Belgium, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, C/2012 X1, C/2012 S1
W96Campo Catino Austral Obs. (CAO) in Chile, 7 in MPEC 2013-W07 -- C/2013 V5, C/2013 V3, C/2013 V1, C/2013 R1, C/2013 G6, C/2012 V2, C/2012 S1
I72Carpe Noctem Obs., 4 in MPEC 2013-W07 -- C/2013 R1, C/2011 J2, C/2010 S1, 154P
309%program code "%" (14) via Cerro Paranal in Chile, 1 in MPEC 2013-W07 -- C/2013 A1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 16 in MPEC 2013-W08 -- 2013 VQ4, 2013 VP12, 2013 VM4, 2013 VL13, 2013 VG13, 2013 VF13, 2013 VC13, 2013 UP8, 2013 TN69, 2013 TL135, 2013 MH7, 2013 GG69, 2011 BJ2, 87684, 310560, 138883
A77Chante-Perdrix Obs. in France, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, P/2013 J2, 154P
B92Chinon Obs. in France, 2 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1
J01Cielo Profundo Obs. in Spain, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, C/2012 X1, C/2012 S1
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-W07 -- C/2013 V3
448Desert Moon Obs. in New Mexico, 2 in MPECs 2013-W07 & 2013-W08 -- C/2013 V5, 377732
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-W07 -- 154P
G26Fushan Obs., 1 in MPEC 2013-W07 -- 154P
372Geisei Obs. in Japan, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 V1, P/2013 T2, C/2012 F6
D00ISON-Kislovodsk Obs., 1 in MPEC 2013-W07 -- C/2013 V3
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2013-W07 -- C/2012 X1, C/2012 S1, C/2010 S1
585Kiev Comet Station in the Ukraine, 1 in MPEC 2013-W07 -- C/2013 R1
D95Kurihara Obs. in Japan, 12 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, P/2013 O2, C/2013 N4, C/2012 X1, C/2012 S1, C/2011 J2, 291P, 290P, 84P, 32P, 2P
130Lumezzane Obs. in Italy, 6 in MPEC 2013-W07 -- C/2012 U1, 290P, 178P, 124P, 119P, 84P
P34Lvye Obs., 6 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, C/2012 X1, C/2012 F6, C/2011 J2, 290P
A06Mataro Obs. in Spain, 2 in MPEC 2013-W07 -- C/2013 R1, C/2012 S1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-W08 -- 2012 FR62
118Modra Obs. in Slovakia, 3 in MPEC 2013-W07 -- C/2013 V5, C/2013 V3, C/2013 V2
213Montcabre Obs. in Spain, 3 in MPEC 2013-W07 -- C/2012 F6, C/2010 S1, 154P
900Moriyama Obs. in Japan, 3 in MPEC 2013-W07 -- C/2013 R1, C/2012 X1, C/2012 S1
D81Nagano Obs. in Japan, 1 in MPEC 2013-W07 -- C/2013 R1
583Odessa-Mayaki Obs. in the Ukraine, 4 in MPEC 2013-W07 -- 273P, 257P, 154P, 119P
C23Olmen Obs. in Belgium, 4 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1, C/2012 X1, C/2012 S1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2013-W07 -- C/2013 V2, P/2013 J2, C/2012 K8, C/2012 J1, C/2012 F6, C/2010 S1, 290P, 154P, 84P
D29Purple Mtn. Obs. Xuyi Station in China, 6 in MPECs 2013-W07 & 2013-W08 -- 251346, 17511, 162566, 5143, 4450, 257P
L04ROASTERR-1 Obs., 2 in MPEC 2013-W07 -- C/2011 J2, 154P
J41Raheny Obs. in Ireland, 1 in MPEC 2013-W08 -- 2013 VY13
071Rhozen Obs. in Bulgaria, 8 in MPEC 2013-W07 -- C/2012 X1, C/2012 S1, C/2012 K1, C/2011 L4, C/2011 J2, C/2010 S1, C/2006 S3, 29P
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-W07 -- 178P
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPEC 2013-W07 -- C/2013 R1, C/2012 X1
510Siegen Obs. in Germany, 2 in MPEC 2013-W07 -- C/2013 R1, 290P
K90Sopot Obs., 5 in MPEC 2013-W07 -- C/2012 J1, C/2012 F6, C/2010 S1, 290P, 154P
587Sormano Obs. in Italy, 1 in MPEC 2013-W07 -- C/2013 A1
C36Starry Wanderer Obs. in Belarus, 2 in MPEC 2013-W07 -- C/2013 V3, C/2013 R1
I42Westport Obs. in Massachusetts, 2 in MPEC 2013-W08 -- 2013 VD13, 2013 TL117
H06iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2013-W07 -- C/2012 S1, 154P
H06#M. Suzuki via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-W07 -- C/2013 R1
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-W07 -- C/2012 S1
I899program code 9 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-W07 -- C/2013 R1
Q62(program code "(" (17) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-W07 -- 154P
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 3 in MPEC 2013-W07 -- C/2013 C2, C/2012 X2, C/2012 V2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 November '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 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 VW13NEODyS16142076-2097198.35e-05-4.66-4.850NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2013-11-12.174 to 2013-11-13.182."
2013 VC13NEODyS16142037-209492.32e-09-5.28-5.680NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2013-11-08.106 to 2013-11-12.093."
JPL Sentry2115R E M O V E DJPL: Risk listing removed at 1905 UTC.
2013 UR1JPL Sentry0125205022.0e-06-6.63-6.670JPL: "Analysis based on 25 observations spanning 7.0358 days (2013-Oct-23.38002 to 2013-Oct-30.415818)." Diameter approximately 0.009 km. from mean, weighted H=27.8.
2011 OB26JPL Sentry16142099-2113224.5e-05-4.91-5.340JPL: "Analysis based on 28 observations spanning 10.049 days (2011-Jul-28.4734 to 2011-Aug-07.52249)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
2011 CF22JPL Sentry22152031-2085711.8e-05-7.13-7.620JPL: "Analysis based on 10 observations spanning .10754 days (2011-Feb-07.37648 to 2011-Feb-07.48402)." Diameter approximately 0.002 km. from mean, weighted H=30.9.
2010 XPJPL Sentry22452026-2092151.1e-08-8.69-9.290JPL: "Analysis based on 15 observations spanning .11834 days (2010-Dec-02.24919 to 2010-Dec-02.36753)." Diameter approximately 0.014 km. from mean, weighted H=26.8.
2010 MZ112JPL Sentry22452029-21111601.9e-06-5.58-6.600JPL: "Analysis based on 7 observations spanning .72773 days (2010-Jun-23.95574 to 2010-Jun-24.68347)." Diameter approximately 0.035 km. from mean, weighted H=25.0.
2008 YD3JPL Sentry23582032-2107333.0e-07-7.11-7.710JPL: "Analysis based on 11 observations spanning .14315 days (2008-Dec-22.34245 to 2008-Dec-22.4856)." Diameter approximately 0.020 km. from mean, weighted H=26.2.
2008 UV99JPL Sentry23142019-2108292.6e-07-3.43-3.570JPL: "Analysis based on 22 observations spanning .90541 days (2008-Oct-31.11917 to 2008-Nov-01.02458)." Diameter approximately 0.400 km. from mean, weighted H=19.6.
2005 ED224JPL Sentry22152018-206462.9e-06-3.91-4.170JPL: "Analysis based on 11 observations spanning 3.1215 days (2005-Mar-13.26326 to 2005-Mar-16.38477)." Diameter approximately 0.054 km. from mean, weighted H=24.0.
2004 ME6JPL Sentry22152017-2113501.3e-07-5.51-6.280JPL: "Analysis based on 8 observations spanning .87335 days (2004-Jun-25.35729 to 2004-Jun-26.23064)." Diameter approximately 0.101 km. from mean, weighted H=22.6.
2001 CA21JPL Sentry21152020-207344.0e-09-4.25-4.490JPL: "Analysis based on 10 observations spanning 1.9210 days (2001-Feb-02.45718 to 2001-Feb-04.37822)." Diameter approximately 0.679 km. from mean, weighted H=18.5.

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 21 November '13

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

2358Noted that JPL Sentry has updated its 2008 YD3 risk assessment - see above
2314Noted that JPL Sentry has updated its 2008 UV99 risk assessment - see above
2245Noted that JPL Sentry has updated its 2010 MZ112 risk assessment - see above
Noted that JPL Sentry has updated its 2010 XP risk assessment - see above
2215Noted that JPL Sentry has updated its 2004 ME6 risk assessment - see above
Noted that JPL Sentry has updated its 2005 ED224 risk assessment - see above
Noted that JPL Sentry has updated its 2011 CF22 risk assessment - see above
2115Noted that JPL Sentry has updated its 2001 CA21 risk assessment - see above
Noted that JPL Sentry has removed 2013 VC13 as an impact risk - see above
1815Grabbed MPEC 2013-W07 - Observations and Orbits of Comets - see above
Grabbed MPEC 2013-W08 - Daily Orbit Update - see above
1615Generated Traffic Report
1614Noted that JPL Sentry has updated its 2011 OB26 risk assessment - see above
Noted that NEODyS has updated its 2013 VC13 risk assessment - see above
Noted that NEODyS has updated its 2013 VW13 risk assessment - see above
0125Noted that JPL Sentry has updated its 2013 UR1 risk assessment - see above