Contents  on 2 July '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 2 July '13

No objects reported inside ten LD

No asteroids are reported traveling within ten lunar distances (LD) of our planet today, and none are predicted to be coming that close until later this month.

This report was generated at 1431 UTC.

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 2 July '13

The MPC's NEO Confirmation Page has 21 listings

When last checked at 1915 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, twelve were "one nighters." So far The Tracking News has counted a total of 33 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 2 July '13

Minor Planet Electronic Circulars

As of last check at 1905 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 2 July '13 >>  MPEC 2013-N02 - "06:02 UT" - Daily Orbit Update

Observers  on 2 July '13

Fifteen observers appear in today's MPEC.

CodeObserver / observatory
A81Balzaretto Obs. in Italy, 1 in MPEC 2013-N02 -- 2002 LT24
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-N02 -- 2013 MR
K20Danastro Obs., 1 in MPEC 2013-N02 -- 285263
157Frasso Sabino Obs. in Italy, 1 in MPEC 2013-N02 -- 2007 XY9
585Kiev Comet Station in the Ukraine, 1 in MPEC 2013-N02 -- 163249
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2013-N02 -- 2002 LT24
C47Nonndorf Obs. in Austria, 1 in MPEC 2013-N02 -- 2013 LK31
C23Olmen Obs. in Belgium, 2 in MPEC 2013-N02 -- 2013 LN31, 285263
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-N02 -- 7977
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2013-N02 -- 2011 HS4, 68278, 66400, 719
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2013-N02 -- 285263
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2013-N02 -- 163249
H36Sandlot Obs. in Kansas, 3 in MPEC 2013-N02 -- 2013 ML3, 2013 LV28, 285263
E12Siding Spring Survey (SSS) in New South Wales, 13 in MPEC 2013-N02 -- 2012 XY6, 2012 VJ6, 88263, 52762, 293726, 281365, 215188, 163364, 7753, 4957, 4015, 3199, 2063
A92Urseanu Obs. in Romania, 1 in MPEC 2013-N02 -- 285263
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 July '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1906 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
2013 ML3JPL Sentry1427210942.6e-06-4.61-4.970JPL: "Analysis based on 112 observations spanning 12.000 days (2013-Jun-19.27039 to 2013-Jul-01.27024)." Diameter approximately 0.120 km. from mean, weighted H=22.2.
NEODyS14272085-210959.99e-06-4.03-4.120NEODyS: "Based on 114 optical observations (of which 6 are rejected as outliers) from 2013-06-19.271 to 2013-07-01.271."

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 2 July '13

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

1431Generated Traffic Report
1427Noted that JPL Sentry has updated its 2013 ML3 risk assessment - see above
Noted that NEODyS has updated its 2013 ML3 risk assessment - see above
Grabbed MPEC 2013-N02 - Daily Orbit Update - see above