Contents  on 30 March '10


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.

NEOCP Activity  on 30 March '10

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing. So far The Tracking News has counted a total of two listings on the NEOCP at some point 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 30 March '10

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 2010-F99 - "22:30 UT" - Comet C/2010 F4 (Machholz)

MPEC 2010-F98 - "20:30 UT" - PHAs

MPEC 2010-F97 - "20:30 UT" - Unusual Minor Planets

MPEC 2010-F96 - "20:30 UT" - Amors

MPEC 2010-F95 - "20:30 UT" - Atens and Apollos

MPEC 2010-F94 - "20:26 UT" - Distant Minor Planets

MPEC 2010-F93 - "20:23 UT" - Observable Comets

<< DOU on 30 Mar. '10 >>  MPEC 2010-F92 - "06:08 UT" - Daily Orbit Update

Observers  on 30 March '10

Fifteen observing facilities appear in today's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2010-F92 -- 220124
349Ageo Obs. in Japan, 1 in MPEC 2010-F99 -- C/2010 F4
C12Berta Obs. in Spain, 1 in MPEC 2010-F92 -- 3671
B75Betelgeuse Station in Italy, 10 in MPEC 2010-F92 -- 2007 BT2, 2004 EU9, 68350, 52768, 208565, 206910, 161989, 14402, 143651, 8566
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-F92 -- 1999 HW1, 40267
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-F92 -- 2010 EZ45, 2007 JZ20, 2006 KD1
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-F92 -- 2010 FC6
D95Kurihara Obs. in Japan, 1 in MPEC 2010-F99 -- C/2010 F4
844Los Molinos Obs. in Uruguay, 3 in MPEC 2010-F92 -- 2003 EG, 88263, 163243
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-F92 -- 2010 DM56
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2010-F92 -- 2009 UV18
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-F92 -- 2010 FZ9
B18Terskol Obs. in Russia, 1 in MPEC 2010-F99 -- C/2010 F4
H53Thompsonville Obs. in Illinois, 4 in MPEC 2010-F92 -- 85839, 218863, 3554, 1627
G72University Hills Obs. in southern California, 1 in MPEC 2010-F92 -- 2010 DB34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 March '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2010 DM56NEODyS1450R E M O V E D-
JPL Sentry1450R E M O V E DJPL: Risk listing removed at 0950 UTC.

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 30 March '10

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

2302Grabbed MPEC 2010-F99 - Comet C/2010 F4 (Machholz) - see above
2101Grabbed MPEC 2010-F93 - Observable Comets - see above
Grabbed MPEC 2010-F94 - Distant Minor Planets - see above
Grabbed MPEC 2010-F95 - Atens and Apollos - see above
Grabbed MPEC 2010-F96 - Amors - see above
Grabbed MPEC 2010-F97 - Unusual Minor Planets - see above
Grabbed MPEC 2010-F98 - PHAs - see above
1450Noted that JPL Sentry has removed 2010 DM56 as an impact risk - see above
Noted that NEODyS has removed 2010 DM56 as an impact risk - see above
Grabbed MPEC 2010-F92 - Daily Orbit Update - see above