Contents  on 3 June '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 3 June '13

One object reported inside ten LD

One asteroid is known to be traveling within ten lunar distances (LD) of Earth today. 2009 FE is inbound from 9.90 to 9.61 LD.

This report was generated at 1407 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 3 June '13

The MPC's NEO Confirmation Page has 14 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fourteen objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of eighteen 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 3 June '13

Minor Planet Electronic Circulars

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

MPEC 2013-L11 - "21:14 UT" - 2012 LC1

<< DOU on 3 June '13 >>  MPEC 2013-L10 - "06:06 UT" - Daily Orbit Update

Observers  on 3 June '13

A total of 32 observers appear in today's MPECs.

CodeObserver / observatory
Z74Amanecer de Arrakis Obs., 1 in MPEC 2013-L10 -- 285263
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2013-L10 -- 2002 FT6
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-L10 -- 285263
I99Blanquita Obs. in Spain, 5 in MPEC 2013-L10 -- 2013 JB36, 285263, 163249, 152756, 137199
I72Carpe Noctem Obs., 1 in MPEC 2013-L10 -- 285263
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2013-L10 -- 2009 BL2, 360433, 354952, 210012, 152756, 7839
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 6 in MPECs 2013-L10 & 2013-L11 -- 2013 KR1, 2013 DR9, 2013 AU27, 2012 LC1, 2010 SO16, 2002 XZ38
G58Chabot Obs. in northern California, 1 in MPEC 2013-L10 -- 285263
A77Chante-Perdrix Obs. in France, 1 in MPEC 2013-L10 -- 285263
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2013-L10 -- 285263
448Desert Moon Obs. in New Mexico, 4 in MPEC 2013-L10 -- 2013 JX2, 2013 FD11, 2006 HB, 285263
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPEC 2013-L10 -- 2013 KN6, 285263
I57Elche Obs., 1 in MPEC 2013-L10 -- 285263
Z81Estrella de Mar Obs., 5 in MPEC 2013-L10 -- 2013 JX2, 2004 LG, 361123, 163249, 152756
C73Galati Obs. in Romania, 1 in MPEC 2013-L10 -- 285263
J37Huelva Obs. in Spain, 1 in MPEC 2013-L10 -- 285263
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-L10 -- 2013 GH84
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2013-L10 -- 2013 KM6
213Montcabre Obs. in Spain, 1 in MPEC 2013-L10 -- 285263
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2013-L10 -- 2009 WE253
C23Olmen Obs. in Belgium, 1 in MPEC 2013-L10 -- 285263
I41Palomar Transient Factory (PTF) in southern California, 2 in MPEC 2013-L10 -- 210012, 3551
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2013-L10 -- 2013 CU129, 162900
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-L10 -- 285263
G401program code 1 via Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-L10 -- 1866
J84South Obs. in England, 3 in MPEC 2013-L10 -- 2013 KN6, 2004 KH17, 285263
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2013-L10 -- 2013 KM6, 2013 GY7, 2013 GV68, 2013 GS38, 2013 BJ18, 2010 LE15
I76Tesla Obs. in Spain, 1 in MPEC 2013-L10 -- 2013 JB36
A92Urseanu Obs. in Romania, 1 in MPEC 2013-L10 -- 285263
718Wiggins Obs. in Utah, 3 in MPEC 2013-L10 -- 2013 JB36, 163249, 7888
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-L10 -- 285263
I89iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-L10 -- 285263
Q622program code 2 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-L10 -- 285263
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 June '13

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
2013 LBNEODyS14042022-210372.75e-09-7.04-7.220NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2013-06-01.378 to 2013-06-02.224."

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 3 June '13

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

2204Grabbed MPEC 2013-L11 - 2012 LC1 - see above
1407Generated Traffic Report
1404Noted that NEODyS has posted 2013 LB as an impact risk - see above
Grabbed MPEC 2013-L10 - Daily Orbit Update - see above