Contents  on 14 June '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 14 June '12

One object reported inside ten LD

One asteroid is reported passing inside ten lunar distances (LD) from Earth today. 2012 LT is outbound from 6.99 to 8.32 LD. Coming our way next, 2012 LU arrives inside ten LD on June 16th.

This report was generated at 1536 UTC with follow-up in today's DOU MPEC for 2012 LU, 2012 LT, and 2012 LA.

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.

NEOCP Activity  on 14 June '12

The MPC's NEO Confirmation Page has 13 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had thirteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 34 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 14 June '12

Minor Planet Electronic Circulars

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

MPEC 2012-L40 - "22:46 UT" - 2012 LU7

MPEC 2012-L39 - "22:44 UT" - 2012 LT7

MPEC 2012-L38 - "14:25 UT" - 2012 LQ7

<< DOU on 14 June '12 >>  MPEC 2012-L37 - "06:02 UT" - Daily Orbit Update

Observers  on 14 June '12

A total of 20 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2012-L37 & 2012-L40 -- 2012 LU7, 2012 LU, 2012 LR1, 2012 LP1, 2012 LD1, 2012 LC1, 2012 LA, 2012 KM45, 2012 JB16, 2012 FD1, 276732
703Catalina Sky Survey in Arizona, 1 in MPEC 2012-L37 -- 329437
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-L37 -- 2012 LZ1
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2012-L37 & 2012-L39 -- 2012 LT7, 2012 LC1, 2012 DH61, 329437
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-L38 & 2012-L39 -- 2012 LT7, 2012 LQ7
J95Great Shefford Obs. in England, 1 in MPEC 2012-L39 -- 2012 LT7
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2012-L37 -- 2012 KA4, 2012 FQ1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2012-L37, 2012-L38, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7, 2012 LQ7, 2012 KJ11, 101955
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-L37 -- 2012 LR1
A13Naef Obs. in Switzerland, 3 in MPECs 2012-L37 & 2012-L39 -- 2012 LT7, 2007 MT20, 162854
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2012-L37, 2012-L38, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LU, 2012 LT7, 2012 LQ7, 2012 DU30, 2009 NH, 2003 BQ35, 1998 FM9, 85184, 53110, 27002, 24445, 3352
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2012-L37 -- 2012 LD1, 2012 HG31, 2011 WV134
461SZTE Asteroid Program in Hungary, 1 in MPEC 2012-L40 -- 2012 LU7
H36Sandlot Obs. in Kansas, 1 in MPEC 2012-L40 -- 2012 LU7
204Schiaparelli Obs. in Italy, 5 in MPEC 2012-L37 -- 2012 LU, 2012 LD1, 2007 MT20, 2007 MM13, 2006 JY25
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2012-L37 -- 2012 LZ1, 2012 LT, 2007 VX7
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2012-L37 -- 2009 NH, 2009 KJ22, 2007 VX7, 136900
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2012-L37 & 2012-L40 -- 2012 LU7, 2012 LR1, 2012 LK2, 2012 KC6, 2008 AF4
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2012-L37, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7, 2004 CL
B18Terskol Obs. in Russia, 2 in MPECs 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 June '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.





Notes for Today's Latest Risk Assessments
2012 LR1JPL Sentry15322034-210685.2e-07-3.79-4.000JPL: "Analysis based on 47 observations spanning 4.8077 days (2012-Jun-09.40456 to 2012-Jun-14.21226)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
NEODyS15322057-208959.82e-07-3.48-3.580NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2012-06-09.405 to 2012-06-14.213."

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 14 June '12

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

2310Grabbed MPEC 2012-L39 - 2012 LT7 - see above
Grabbed MPEC 2012-L40 - 2012 LU7 - see above
1536Generated Traffic Report
1532Noted that JPL Sentry has updated its 2012 LR1 risk assessment - see above
Noted that NEODyS has updated its 2012 LR1 risk assessment - see above
Grabbed MPEC 2012-L37 - Daily Orbit Update - see above
Grabbed MPEC 2012-L38 - 2012 LQ7 - see above