Contents  on 12 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 12 November '13

Five objects reported inside ten LD

Five objects are reported to be located inside ten lunar distances (LD) of our planet today. Radar target 2001 AV43 is inbound from 6.22 to 5.54 LD and 2011 JY1 from 8.85 to 7.37 LD, while the others are outbound: intruder 2013 VJ11 from 6.92 to 8.97 LD and 2013 VK11 from 7.17 to 8.68 LD, and 2013 VO11 departs from inside ten LD, passing from 9.64 to 11.93 LD.

Coming around next, newly announced 2013 VK13 arrives inside ten LD on November 17th and radar target 2013 NJ arrives on November 19th.

This report was updated at 2105 UTC with the discovery of departed 2013 VP13 (MPEC). Today's first traffic report was generated at 1842 UTC with new discoveries 2013 VK13 (MPEC) and departed 2013 VJ13 (MPEC). We also note that radar data was posted late yesterday for 2011 JY1. No DOU MPEC has been issued yet today.

Advisory:  The Minor Planet Center posted a note yesterday advising that "Automatic issuance of DOU MPECs will be suspended temporarily while we reconfigure the procedure. There will be manual issuance of DOU MPECs at odd time[s] over the next few days."



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.

Radar Astrometry  on 12 November '13

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2224 UTC when the database was dated 12 Nov.


Data update noted at 2334 UTC when the database was dated 12 Nov.

NEOCP Activity  on 12 November '13

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2326 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, seven were "one nighters." So far The Tracking News has counted a total of 55 listings on the NEOCP today.

New MPECs  on 12 November '13

Minor Planet Electronic Circulars

As of last check at 2326 UTC, there have been eighteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation.


MPEC 2013-V83 - "17:51 UT" - 2013 VQ13


MPEC 2013-V82 - "17:46 UT" - 2013 VP13


MPEC 2013-V81 - "17:41 UT" - 2013 VO13


MPEC 2013-V80 - "17:35 UT" - 2013 VN13


MPEC 2013-V79 - "16:50 UT" - 2008 WT62


MPEC 2013-V78 - "12:40 UT" - 2013 VM13


MPEC 2013-V77 - "12:35 UT" - 2013 VL13


MPEC 2013-V76 - "12:28 UT" - 2013 VK13


MPEC 2013-V75 - "12:23 UT" - 2013 VJ13


MPEC 2013-V74 - "12:17 UT" - 2013 VH13


MPEC 2013-V73 - "12:12 UT" - 2013 VG13


MPEC 2013-V72 - "12:07 UT" - 2013 VF13


MPEC 2013-V71 - "12:01 UT" - 2013 VE13


MPEC 2013-V70 - "11:54 UT" - 2013 VD13


MPEC 2013-V69 - "11:48 UT" - 2013 VC13


MPEC 2013-V68 - "02:54 UT" - 2013 VR12


MPEC 2013-V67 - "02:49 UT" - 2013 VQ12


MPEC 2013-V66 - "02:43 UT" - 2013 VP12

Observers  on 12 November '13

A total of 24 observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 2 in radar -- 2013 VO5, 2011 JY1
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2013-V66, 2013-V67, 2013-V68, 2013-V69, 2013-V70, 2013-V71, 2013-V73 & 2013-V75 -- 2013 VR12, 2013 VQ12, 2013 VP12, 2013 VJ13, 2013 VG13, 2013 VE13, 2013 VD13, 2013 VC13
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-V81 -- 2013 VO13
I58Betera Obs., 1 in MPEC 2013-V81 -- 2013 VO13
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-V71 -- 2013 VE13
703Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2013-V70, 2013-V71, 2013-V77 & 2013-V81 -- 2013 VO13, 2013 VL13, 2013 VE13, 2013 VD13
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2013-V70, 2013-V71 & 2013-V77 -- 2013 VL13, 2013 VE13, 2013 VD13
958Dax Obs. in France, 1 in MPEC 2013-V70 -- 2013 VD13
448Desert Moon Obs. in New Mexico, 3 in MPECs 2013-V69, 2013-V70 & 2013-V81 -- 2013 VO13, 2013 VD13, 2013 VC13
203GiaGa Obs. in Italy, 1 in MPEC 2013-V81 -- 2013 VO13
J95Great Shefford Obs. in England, 1 in MPEC 2013-V70 -- 2013 VD13
V37LCOGT Fort Davis in Texas, 1 in MPEC 2013-V75 -- 2013 VJ13
K91LCOGT Sutherland A in South Africa, 3 in MPECs 2013-V70, 2013-V71 & 2013-V72 -- 2013 VF13, 2013 VE13, 2013 VD13
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2013-V67, 2013-V70, 2013-V74, 2013-V81 & 2013-V83 -- 2013 VQ13, 2013 VQ12, 2013 VO13, 2013 VH13, 2013 VD13
711McDonald Obs. in Texas, 2 in MPECs 2013-V75 & 2013-V78 -- 2013 VM13, 2013 VJ13
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2013-V66, 2013-V68, 2013-V69, 2013-V71, 2013-V72, 2013-V73, 2013-V74, 2013-V75, 2013-V76, 2013-V77, 2013-V78, 2013-V80, 2013-V82 & 2013-V83 -- 2013 VR12, 2013 VQ13, 2013 VP13, 2013 VP12, 2013 VN13, 2013 VM13, 2013 VL13, 2013 VK13, 2013 VJ13, 2013 VH13, 2013 VG13, 2013 VF13, 2013 VE13, 2013 VC13
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-V67 -- 2013 VQ12
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2013-V70 -- 2013 VD13
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-V68 -- 2013 VR12
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-V70 -- 2013 VD13
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-V70 -- 2013 VD13
291Spacewatch 1.8m telescope in Arizona, 13 in MPECs 2013-V66, 2013-V67, 2013-V69, 2013-V70, 2013-V71, 2013-V72, 2013-V73, 2013-V74, 2013-V75, 2013-V76, 2013-V78, 2013-V80 & 2013-V82 -- 2013 VQ12, 2013 VP13, 2013 VP12, 2013 VN13, 2013 VM13, 2013 VK13, 2013 VJ13, 2013 VH13, 2013 VG13, 2013 VF13, 2013 VE13, 2013 VD13, 2013 VC13
673!Jana Pittichova via Table Mtn. Obs. in southern California, 4 in MPECs 2013-V66, 2013-V69, 2013-V70 & 2013-V75 -- 2013 VP12, 2013 VJ13, 2013 VD13, 2013 VC13
926Tenagra II Obs. in Arizona, 12 in MPECs 2013-V66, 2013-V68, 2013-V70, 2013-V71, 2013-V72, 2013-V73, 2013-V75, 2013-V76, 2013-V77, 2013-V79, 2013-V81 & 2013-V83 -- 2013 VR12, 2013 VQ13, 2013 VP12, 2013 VO13, 2013 VL13, 2013 VK13, 2013 VJ13, 2013 VG13, 2013 VF13, 2013 VE13, 2013 VD13, 2008 WT62
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 November '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: JPL at 2328 and NEODyS at 2327 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 VJ13JPL Sentry17052092-2112252.4e-06-5.13-5.710JPL: "Analysis based on 38 observations spanning 2.0200 days (2013-Nov-10.13475 to 2013-Nov-12.15479)." Diameter approximately 0.062 km. from mean, weighted H=23.7.
NEODyS17052098-2110121.77e-06-5.26-5.560NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2013-11-10.136 to 2013-11-12.156."
2013 VC13JPL Sentry17052017-208134.3e-10-5.12-5.150JPL: "Analysis based on 30 observations spanning 3.9861 days (2013-Nov-08.10564 to 2013-Nov-12.09173)." Diameter approximately 0.709 km. from mean, weighted H=18.4.
NEODyS17052037-2109285.03e-09-4.95-5.680NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2013-11-08.106 to 2013-11-12.093."
2013 VJ11NEODyS1705R E M O V E D-
2009 VZ39JPL Sentry05042013-21107876.9e-06-6.25-7.480JPL: "Analysis based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546)." Diameter approximately 0.009 km. from mean, weighted H=27.9.

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 12 November '13

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

2334Noted Radar Astrometry database update - see above
2224Noted Radar Astrometry database update - see above
2105Updated Traffic Report
1807Grabbed MPEC 2013-V81 - 2013 VO13 - see above
Grabbed MPEC 2013-V82 - 2013 VP13 - see above
Grabbed MPEC 2013-V83 - 2013 VQ13 - see above
1737Grabbed MPEC 2013-V80 - 2013 VN13 - see above
1705Noted that JPL Sentry has posted 2013 VC13 as an impact risk - see above
Noted that NEODyS has posted 2013 VC13 as an impact risk - see above
Noted that NEODyS has removed 2013 VJ11 as an impact risk - see above
Noted that JPL Sentry has posted 2013 VJ13 as an impact risk - see above
Noted that NEODyS has posted 2013 VJ13 as an impact risk - see above
Grabbed MPEC 2013-V69 - 2013 VC13 - see above
Grabbed MPEC 2013-V70 - 2013 VD13 - see above
Grabbed MPEC 2013-V71 - 2013 VE13 - see above
Grabbed MPEC 2013-V72 - 2013 VF13 - see above
Grabbed MPEC 2013-V73 - 2013 VG13 - see above
Grabbed MPEC 2013-V74 - 2013 VH13 - see above
Grabbed MPEC 2013-V75 - 2013 VJ13 - see above
Grabbed MPEC 2013-V76 - 2013 VK13 - see above
Grabbed MPEC 2013-V77 - 2013 VL13 - see above
Grabbed MPEC 2013-V78 - 2013 VM13 - see above
Grabbed MPEC 2013-V79 - 2008 WT62 - see above
0504Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above
Grabbed MPEC 2013-V66 - 2013 VP12 - see above
Grabbed MPEC 2013-V67 - 2013 VQ12 - see above
Grabbed MPEC 2013-V68 - 2013 VR12 - see above