Contents  on 11 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 11 November '12

Eight objects reported inside ten LD

Eight objects are reported flying within ten lunar distances (LD) of Earth today. Inside Earth's Hill sphere, 2012 VC26 comes its closest to Earth this time around, reaching 2.31 LD at 2214 UTC, and 2012 VQ6 exits the sphere, going from 2.32 to 4.75 LD.

Further out, risk-listed 2012 UY68 is inbound from 7.63 to 7.14 LD while all the other objects are outbound. 2012 UV136 travels from 5.82 to 6.00 LD, 2012 VA26 from 5.88 to 7.27 LD, and 2012 UX136 from 7.80 to 8.94 LD. 2012 VB5 exits ten LD, moving from 7.46 to 10.68 LD, as does 2012 UL171, passing from 10.0 to 10.5 LD*.

Approaching next, 2012 VB26 arrives inside ten LD on November 16th and radar target 2010 JK1 comes inside on November 22nd.

This report was generated at 1821 UTC with a new discovery, the already departed 2012 VB37 (MPEC), and today's DOU MPEC with the first follow-up for 2012 VC26 and 2012 VA26.

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 11 November '12

The MPC's NEO Confirmation Page has 18 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eighteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 29 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 11 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-V70 - "20:55 UT" - 2012 TA219

MPEC 2012-V69 - "09:23 UT" - 2012 VF37

MPEC 2012-V68 - "09:20 UT" - 2012 VE37

MPEC 2012-V67 - "09:17 UT" - 2012 VD37

MPEC 2012-V66 - "09:04 UT" - 2012 VC37

MPEC 2012-V65 - "09:00 UT" - 2012 VB37

MPEC 2012-V64 - "08:55 UT" - 2012 VZ36

<< DOU on 11 Nov. '12 >>  MPEC 2012-V63 - "06:05 UT" - Daily Orbit Update

Observers  on 11 November '12

Seventeen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPECs 2012-V64, 2012-V68 & 2012-V69 -- 2012 VZ36, 2012 VF37, 2012 VE37
703Catalina Sky Survey in Arizona, 1 in MPEC 2012-V70 -- 2012 TA219
I51Clinton Obs., 2 in MPEC 2012-V63 -- 5836, 1620
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2012-V63 -- 12538
I57Elche Obs., 3 in MPEC 2012-V63 -- 5646, 3838, 3360
J95Great Shefford Obs. in England, 6 in MPECs 2012-V63, 2012-V65, 2012-V66, 2012-V68 & 2012-V69 -- 2012 VF37, 2012 VE37, 2012 VC37, 2012 VC26, 2012 VB37, 2012 VA26
704LINEAR in New Mexico, 12 in MPECs 2012-V63, 2012-V65 & 2012-V66 -- 2012 VC37, 2012 VB37, 2012 RX16, 2003 UC20, 333358, 277127, 237442, 162004, 153958, 152667, 3838, 3200
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2012-V64 & 2012-V67 -- 2012 VZ36, 2012 VD37
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-V63 -- 2012 TO139
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2012-V69 -- 2012 VF37
711McDonald Obs. in Texas, 1 in MPEC 2012-V68 -- 2012 VE37
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-V67 -- 2012 VD37
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2012-V63, 2012-V64, 2012-V68, 2012-V69 & 2012-V70 -- 2012 VZ36, 2012 VF37, 2012 VE37, 2012 TA219, 338176
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-V68 -- 2012 VE37
204Schiaparelli Obs. in Italy, 2 in MPECs 2012-V67 & 2012-V68 -- 2012 VE37, 2012 VD37
J84South Obs. in England, 2 in MPEC 2012-V63 -- 2012 VC26, 2010 WB3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-V70 -- 2012 TA219
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2012-V64 -- 2012 VZ36
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 November '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2305 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.





Notes for Today's Latest Risk Assessments
2012 VF37JPL Sentry1728205711.1e-10-7.70-7.700JPL: "Analysis based on 15 observations spanning 3.6754 days (2012-Nov-07.378011 to 2012-Nov-11.05337)." Diameter approximately 0.240 km. from mean, weighted H=20.7.
NEODyS17282057-205713.08e-10-7.27-7.270NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2012-11-07.379 to 2012-11-11.054."
2012 TO139NEODyS17282043-204319.33e-10-5.80-5.80NEODyS: "Based on 52 optical observations (of which 0 are rejected as outliers) from 2012-10-11.254 to 2012-11-07.229."

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 11 November '12

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

2100Grabbed MPEC 2012-V70 - 2012 TA219 - see above
1821Generated Traffic Report
1728Noted that NEODyS has updated its 2012 TO139 risk assessment - see above
Noted that JPL Sentry has posted 2012 VF37 as an impact risk - see above
Noted that NEODyS has posted 2012 VF37 as an impact risk - see above
Grabbed MPEC 2012-V63 - Daily Orbit Update - see above
Grabbed MPEC 2012-V64 - 2012 VZ36 - see above
Grabbed MPEC 2012-V65 - 2012 VB37 - see above
Grabbed MPEC 2012-V66 - 2012 VC37 - see above
Grabbed MPEC 2012-V67 - 2012 VD37 - see above
Grabbed MPEC 2012-V68 - 2012 VE37 - see above
Grabbed MPEC 2012-V69 - 2012 VF37 - see above