Contents  on 7 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 7 November '12

Eight objects reported inside ten LD

Eight asteroids are reported inside ten lunar distances (LD) of our planet today. Two of them are exiting Earth's Hill sphere. 2012 VD5 travels from 2.10 to 4.27 LD and 2012 UX136 from 3.71 to 4.60 LD. Further away from us, 2012 UV136 is inbound from 6.59 to 6.19 LD while 2012 VL5 is outbound from 7.48 to 8.49 LD and 2012 UL171 from 8.2 to 8.6 LD*, and three objects come inside ten LD. 2012 VB5 moves from 10.44 to 7.24 LD, 2012 VQ6 from 10.29 to 7.43 LD,, and risk-listed 2012 UY68 from 10.78 to 9.87 LD.

On approach next, radar target 2010 JK1 arrives inside ten LD on November 22nd.

This report was updated at 2013 UTC with two new discoveries, both already departed: 2012 VB20 (MPEC) and 2012 VZ19 (MPEC). Today's first traffic report was generated at 1731 UTC with follow-up in today's DOU MPEC for departed 2012 UK171.


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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 7 November '12

The MPC's NEO Confirmation Page has 44 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 44 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 56 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 7 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-V48 - "18:20 UT" - 2012 VB20


MPEC 2012-V47 - "18:17 UT" - 2012 VA20


MPEC 2012-V46 - "18:15 UT" - 2012 VZ19


MPEC 2012-V45 - "12:35 UT" - 2012 VO7


MPEC 2012-V44 - "12:29 UT" - 2012 VN7


MPEC 2012-V43 - "11:29 UT" - 2003 SL215


<< DOU on 7 Nov. '12 >>  MPEC 2012-V42 - "06:04 UT" - Daily Orbit Update


MPEC 2012-V41 - "02:04 UT" - 2010 WB3

Observers  on 7 November '12

A total of 35 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPECs 2012-V46, 2012-V47 & 2012-V48 -- 2012 VZ19, 2012 VB20, 2012 VA20
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-V42 -- 2005 WD
300Bisei Spaceguard Center in Japan, 2 in MPECs 2012-V41 & 2012-V42 -- 2010 WB3, 2005 WD
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2012-V42 & 2012-V48 -- 2012 VB20, 2012 UK171, 2012 TO231, 2012 LU7, 2012 KK18, 2007 TR65, 1998 WL4, 138847, 6569, 1685
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2012-V42 -- 2012 VZ4, 2012 VF5, 2012 UB34, 2012 SK8, 2012 PG5, 2012 KU42, 2009 AV, 1997 UH9, 96744, 333908, 331509, 138925, 4957
958Dax Obs. in France, 2 in MPECs 2012-V41 & 2012-V48 -- 2012 VB20, 2010 WB3
448Desert Moon Obs. in New Mexico, 7 in MPEC 2012-V42 -- 2012 UB34, 2012 TZ52, 2012 TO231, 2012 LU7, 68548, 199145, 105141
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPECs 2012-V41, 2012-V42 & 2012-V48 -- 2012 VB20, 2012 US136, 2010 WB3
734Farpoint Obs. in Kansas, 2 in MPECs 2012-V41 & 2012-V48 -- 2012 VB20, 2010 WB3
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-V41 -- 2010 WB3
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-V42 -- 2012 VE5
203GiaGa Obs. in Italy, 1 in MPEC 2012-V48 -- 2012 VB20
J95Great Shefford Obs. in England, 2 in MPECs 2012-V41 & 2012-V48 -- 2012 VB20, 2010 WB3
D00ISON-Kislovodsk Obs., 2 in MPEC 2012-V42 -- 2012 TA79, 2005 UC
704LINEAR in New Mexico, 6 in MPECs 2012-V41, 2012-V42 & 2012-V48 -- 2012 VB20, 2012 SQ56, 2010 WB3, 2005 WD, 2002 TY68, 333358
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2012-V43, 2012-V45, 2012-V46 & 2012-V47 -- 2012 VZ19, 2012 VO7, 2012 VA20, 2003 SL215
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-V42 -- 2012 PB20
932McCarthy Obs. in Connecticut, 1 in MPEC 2012-V48 -- 2012 VB20
711McDonald Obs. in Texas, 1 in MPEC 2012-V47 -- 2012 VA20
118Modra Obs. in Slovakia, 1 in MPEC 2012-V42 -- 2012 QF49
900Moriyama Obs. in Japan, 3 in MPECs 2012-V41, 2012-V42 & 2012-V48 -- 2012 VB20, 2010 WB3, 2005 WD
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2012-V42 -- 2012 TQ256, 2009 SQ104, 2002 PC11, 338292, 153306, 10115
A13Naef Obs. in Switzerland, 4 in MPEC 2012-V42 -- 2004 UB, 99907, 163364, 153306
A24New Millennium Obs. in Italy, 7 in MPECs 2012-V41, 2012-V42 & 2012-V48 -- 2012 VB20, 2010 WB3, 2008 HV4, 2005 SH19, 333358, 250458, 17182
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2012-V42, 2012-V43, 2012-V44, 2012-V45, 2012-V46 & 2012-V47 -- 2012 VZ19, 2012 VO7, 2012 VN7, 2012 VA20, 2012 TX78, 2012 TA79, 2012 SA59, 2012 JS11, 2009 SQ104, 2008 EZ97, 2005 UC, 2004 CH52, 2003 SL215, 329275, 277127, 256004, 3288
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2012-V42 -- 2012 US136, 2012 UK171, 2012 SA59, 2012 QF49, 2012 QB17, 2010 WB3
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-V48 -- 2012 VB20
204Schiaparelli Obs. in Italy, 1 in MPEC 2012-V48 -- 2012 VB20
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2012-V42 & 2012-V48 -- 2012 VB20, 2005 JU1
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2012-V42, 2012-V44 & 2012-V46 -- 2012 VZ19, 2012 VN7, 2012 VE5, 2012 UZ33, 2012 UQ18, 2012 TX284, 2012 TV78, 2012 TP139, 2012 TO139, 2011 TG2
926Tenagra II Obs. in Arizona, 1 in MPEC 2012-V42 -- 2002 PC11
C44Volta Obs. in Italy, 1 in MPEC 2012-V48 -- 2012 VB20
G56Walnut Creek Obs. in northern California, 1 in MPEC 2012-V41 -- 2010 WB3
I42Westport Obs. in Massachusetts, 1 in MPEC 2012-V42 -- 2007 TR65
718Wiggins Obs. in Utah, 3 in MPECs 2012-V41, 2012-V42 & 2012-V48 -- 2012 VB20, 2012 UK171, 2010 WB3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 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 VF5JPL Sentry1730R E M O V E DJPL: Risk listing removed at 0949 UTC.
2012 VE5JPL Sentry1730207614.1e-10-6.32-6.320JPL: "Analysis based on 19 observations spanning 3.8824 days (2012-Nov-03.212285 to 2012-Nov-07.09468)." Diameter approximately 0.720 km. from mean, weighted H=18.4.
2012 TO139NEODyS17302043-204311.53e-09-5.60-5.60NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2012-10-11.254 to 2012-11-07.229."
2012 PB20JPL Sentry17302066-211241.0e-06-6.41-6.870JPL: "Analysis based on 46 observations spanning 56.850 days (2012-Aug-14.48152 to 2012-Oct-10.331721)." Diameter approximately 0.035 km. from mean, weighted H=24.9.
NEODyS17302066-209232.59e-07-6.81-6.870NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2012-08-14.482 to 2012-10-10.332."

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 7 November '12

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

2013Updated Traffic Report
1847Grabbed MPEC 2012-V46 - 2012 VZ19 - see above
Grabbed MPEC 2012-V47 - 2012 VA20 - see above
Grabbed MPEC 2012-V48 - 2012 VB20 - see above
1730Noted that JPL Sentry has updated its 2012 PB20 risk assessment - see above
Noted that NEODyS has updated its 2012 PB20 risk assessment - see above
Noted that NEODyS has reposted 2012 TO139 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 VE5 risk assessment - see above
Noted that JPL Sentry has removed 2012 VF5 as an impact risk - see above
Grabbed MPEC 2012-V42 - Daily Orbit Update - see above
Grabbed MPEC 2012-V43 - 2003 SL215 - see above
Grabbed MPEC 2012-V44 - 2012 VN7 - see above
Grabbed MPEC 2012-V45 - 2012 VO7 - see above
0240Grabbed MPEC 2012-V41 - 2010 WB3 - see above