Contents  on 6 April '08


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 6 April '08

The MPC's NEO Confirmation Page has 19 listings: 7 new, 12 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven new and twelve updated listings. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 20 objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 6 April '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 6 Apr. '08 >>  MPEC 2008-G30 - "06:08 UT" - Daily Orbit Update

Observers  on 6 April '08

Sixteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 7 in MPEC 2008-G30 -- 2008 GX, 2008 GE1, 2008 GD1, 2008 EV68, 2008 EN6, 2008 CJ70, 2008 BE
235CAST Obs. in Italy, 2 in MPEC 2008-G30 -- 2008 DE, 2007 RX19
703Catalina Sky Survey (CSS) in Arizona, 12 in MPEC 2008-G30 -- 2008 FG5, 2008 EM9, 2007 VY7, 2004 FE31, 2003 GW, 2002 FW5, 1999 TA10, 35107, 162422, 136874, 9400, 5836
106Crni Vrh Obs. in Slovenia, 3 in MPEC 2008-G30 -- 2008 FN, 2008 EM85, 2008 CZ118
448Desert Moon Obs. in New Mexico, 7 in MPEC 2008-G30 -- 2008 FS6, 2008 EQ7, 2008 EM9, 2008 ED69, 2008 EB32, 2007 HR, 2005 GL9
F653FTP education program via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-G30 -- 2005 JF21
J95Great Shefford Obs. in England, 1 in MPEC 2008-G30 -- 2008 GF1
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2008-G30 -- 2008 FU6
704LINEAR in New Mexico, 5 in MPEC 2008-G30 -- 2008 FO, 2007 RX19, 1998 HK3, 86667, 1866
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-G30 -- 2008 DB
711McDonald Obs. in Texas, 11 in MPEC 2008-G30 -- 2008 GK, 2008 GE1, 2008 FU6, 2008 FN, 2008 EB32, 2008 DW, 2008 DG5, 2008 BT18, 2007 HR, 2006 SU131, 2005 JF21
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2008-G30 -- 2007 PA8, 2007 NS4, 2002 RU25, 178601, 162422
B61Sant Cugat del Valles Obs. in Spain, 1 in MPEC 2008-G30 -- 1866
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-G30 -- 2004 CR2, 2003 HU42
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2008-G30 -- 2008 GJ, 2008 GH, 2008 FT6, 2008 FS6, 2008 FK7, 2008 FF5, 2008 EW5, 2007 RU9
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2008-G30 -- 2008 GX, 2008 GD
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 April '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 GJNEODyS1458R E M O V E D
2008 GHNEODyS14592074-208526.33e-10-8.43-8.510NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/04/01.298 to 2008/04/05.243."
2008 FF5NEODyS14592060-207022.32e-07-5.10-5.120NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/04/05.282."
2008 DBNEODyS14592046-2090234.19e-05-4.79-4.860NEODyS: "Based on 64 optical observations (of which 2 are rejected as outliers) from 2008/02/18.243 to 2008/03/13.517."

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 6 April '08

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

1459Noted that NEODyS has updated its 2008 DB risk assessment - see above
Noted that NEODyS has updated its 2008 FF5 risk assessment - see above
Noted that NEODyS has updated its 2008 GH risk assessment - see above
Grabbed MPEC 2008-G30 - Daily Orbit Update - see above
1458Noted that NEODyS has removed 2008 GJ as an impact risk - see above