Contents  on 13 November '12

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 13 November '12

Six objects reported inside ten LD

Six visitors are reported to be within ten lunar distances (LD) of our planet today. Newly announced intruder 2012 VJ38 comes inside the Earth-Moon system, moving from 1.27 to 0.59 LD. Inside Earth's Hill sphere, 2012 VC26 is headed away from 2.64 to 3.38 LD.

Further out, risk-listed 2012 UY68 is inbound from 6.82 to 6.71 LD and 2012 UV136 is outbound from 6.31 to 6.74 LD, while 2012 VQ6 leaves ten LD, traveling from 7.52 to 10.37 LD, as does 2012 VA26, passing from 9.03 to 10.97 LD.

Next up, 2012 VB26 arrives inside ten LD on November 16th and radar target 2010 JK1 arrives on November 22nd.

This report was updated at 1904 UTC to note today's DOU MPEC with additional observations of 2012 VJ38 and follow-up for departed 2012 UK171. Today's first traffic report was generated at 0707 UTC with new discovery 2012 VJ38 (MPEC).


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.

Radar Astrometry  on 13 November '12

Radar observation of one object

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


Data update noted at 2133 UTC when the database was dated 13 Nov.

NEOCP Activity  on 13 November '12

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 54 listings on the NEOCP today.

New MPECs  on 13 November '12

Minor Planet Electronic Circulars

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


MPEC 2012-V79 - "21:13 UT" - P/2004 F1 = 2012 V3 (NEAT)


MPEC 2012-V78 - "15:14 UT" - 2012 VJ46


MPEC 2012-V77 - "15:11 UT" - 2012 VH46


MPEC 2012-V76 - "15:09 UT" - 2012 VG46


MPEC 2012-V75 - "15:06 UT" - 2012 VF46


MPEC 2012-V74 - "14:08 UT" - 2012 VE46


<< DOU on 13 Nov. '12 >>  MPEC 2012-V73 - "06:05 UT" - Daily Orbit Update


MPEC 2012-V72 - "05:11 UT" - 2012 VJ38

Observers  on 13 November '12

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2012-V75 & 2012-V76 -- 2012 VG46, 2012 VF46
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-V76 -- 2012 VG46
G36CASADO in Spain, 1 in MPEC 2012-V73 -- 277958
703Catalina Sky Survey (CSS) in Arizona, 19 in MPECs 2012-V72, 2012-V73 & 2012-V76 -- 2012 VJ38, 2012 VG46, 2012 UK171, 2012 UA174, 2012 TJ146, 2012 OO, 2010 HQ80, 2008 XE2, 2008 HV4, 34613, 329669, 329338, 220839, 162082, 153306, 144411, 11054, 5587, 3908
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPECs 2012-V73, 2012-V74 & 2012-V75 -- 2012 VF5, 2012 VF46, 2012 VE46, 2008 RE80, 2002 VV17
958Dax Obs. in France, 1 in MPEC 2012-V72 -- 2012 VJ38
448Desert Moon Obs. in New Mexico, 3 in MPEC 2012-V73 -- 2012 UA174, 199145, 162082
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2012-V75 -- 2012 VF46
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPECs 2012-V73, 2012-V75, 2012-V77 & 2012-V78 -- 2012 VJ46, 2012 VH46, 2012 VF46, 2012 VC6, 2012 TT
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 214869
J95Great Shefford Obs. in England, 2 in MPECs 2012-V72 & 2012-V75 -- 2012 VJ38, 2012 VF46
C43Hoyerswerda Obs. in Germany, 2 in MPECs 2012-V72 & 2012-V76 -- 2012 VJ38, 2012 VG46
704LINEAR in New Mexico, 28 in MPECs 2012-V73 & 2012-V75 -- 2012 VF46, 2012 TK123, 2012 TA79, 2012 LE11, 2008 XE2, 2006 WN1, 2005 UC, 99907, 85839, 341050, 338176, 33342, 329275, 326291, 275558, 192563, 162900, 162082, 153951, 152941, 137199, 137052, 11054, 8034, 6455, 4487, 4183, 887
900Moriyama Obs. in Japan, 1 in MPEC 2012-V72 -- 2012 VJ38
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2012-V73, 2012-V76, 2012-V77, 2012-V78 & 2012-V79 -- 2012 VJ46, 2012 VJ38, 2012 VH46, 2012 VG46, P/2012 V3, 2012 QY14, 2011 BJ39, 337119, 326777, 256004, 162142, 153220, 8034, 4947
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2012-V73 & 2012-V74 -- 2012 VE46, 2012 OO, 145656
A32Panker Obs. in Germany, 1 in MPEC 2012-V73 -- 4947
H36Sandlot Obs. in Kansas, 2 in MPECs 2012-V73 & 2012-V78 -- 2012 VJ46, 2012 PP28
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2012-V73 -- 343098, 334412, 333908
291Spacewatch 1.8m telescope in Arizona, 18 in MPECs 2012-V73, 2012-V74, 2012-V77 & 2012-V78 -- 2012 VZ4, 2012 VO6, 2012 VL6, 2012 VJ6, 2012 VJ46, 2012 VH46, 2012 VF6, 2012 VF37, 2012 VF26, 2012 VE5, 2012 VE46, 2012 UZ33, 2012 UR138, 2012 UR136, 2012 UE34, 2012 TX284, 2012 PP28, 2011 BA45
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-V76 -- 2012 VG46
954Teide Obs. in the Canary Islands, 1 in MPEC 2012-V75 -- 2012 VF46
926Tenagra II Obs. in Arizona, 2 in MPEC 2012-V73 -- 2012 JR17, 237442
G56Walnut Creek Obs. in northern California, 1 in MPEC 2012-V73 -- 2012 VJ38
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 November '12

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
2012 VJ38JPL Sentry17002031-2107551.4e-03-4.30-4.310JPL: "Analysis based on 36 observations spanning .98084 days (2012-Nov-12.23058 to 2012-Nov-13.21142)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
NEODyS17002031-2097591.93e-04-5.17-5.190NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2012-11-12.231 to 2012-11-13.212."
2012 VF37JPL Sentry1700R E M O V E DJPL: Risk listing removed at 0950 UTC.
NEODyS1700R E M O V E D-
2012 VJ6JPL Sentry1700R E M O V E DJPL: Risk listing removed at 0949 UTC.
NEODyS1700R E M O V E D-
2012 VE5JPL Sentry1700R E M O V E DJPL: Risk listing removed at 0948 UTC.
2012 UE34JPL Sentry17002092-211151.6e-05-4.28-4.590JPL: "Analysis based on 37 observations spanning 24.977 days (2012-Oct-18.393522 to 2012-Nov-12.37081)." Diameter approximately 0.080 km. from mean, weighted H=23.1.
2010 VP139JPL Sentry04152013-21091172.1e-06-7.59-8.500JPL: "Analysis based on 12 observations spanning .04588 days (2010-Nov-14.27911 to 2010-Nov-14.32499)." Diameter approximately 0.006 km. from mean, weighted H=28.7.
2009 VZ39JPL Sentry04152013-21107896.9e-06-6.22-7.480JPL: "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 13 November '12

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

2133Grabbed MPEC 2012-V79 - P/2004 F1 = 2012 V3 (NEAT) - see above
Noted Radar Astrometry database update - see above
1904Updated Traffic Report
1700Noted that JPL Sentry has updated its 2012 UE34 risk assessment - see above
Noted that JPL Sentry has removed 2012 VE5 as an impact risk - see above
Noted that JPL Sentry has removed 2012 VF37 as an impact risk - see above
Noted that NEODyS has removed 2012 VF37 as an impact risk - see above
Noted that JPL Sentry has posted 2012 VJ38 as an impact risk - see above
Noted that NEODyS has posted 2012 VJ38 as an impact risk - see above
Noted that JPL Sentry has removed 2012 VJ6 as an impact risk - see above
Noted that NEODyS has removed 2012 VJ6 as an impact risk - see above
Grabbed MPEC 2012-V73 - Daily Orbit Update - see above
Grabbed MPEC 2012-V74 - 2012 VE46 - see above
Grabbed MPEC 2012-V75 - 2012 VF46 - see above
Grabbed MPEC 2012-V76 - 2012 VG46 - see above
Grabbed MPEC 2012-V77 - 2012 VH46 - see above
Grabbed MPEC 2012-V78 - 2012 VJ46 - see above
0625Grabbed MPEC 2012-V72 - 2012 VJ38 - see above
0415Noted that JPL Sentry has updated its 2009 VZ39 risk assessment - see above
Noted that JPL Sentry has updated its 2010 VP139 risk assessment - see above