Contents  on 15 May '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 15 May '08

The MPC's NEO Confirmation Page has 4 listings: 1 new, 3 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and three updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of ten 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 15 May '08

Minor Planet Electronic Circulars

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

MPEC 2008-J79 - "23:17 UT" - 2008 JY30

MPEC 2008-J78 - "18:48 UT" - Comet C/2008 J6 (Hill)

MPEC 2008-J77 - "18:36 UT" - 2000 AD205

MPEC 2008-J76 - "16:13 UT" - Comet C/2008 J5 (Garradd)

MPEC 2008-J75 - "14:54 UT" - 2008 JS26

MPEC 2008-J74 - "14:51 UT" - 2008 JR26

<< DOU on 15 May '08 >>  MPEC 2008-J73 - "06:08 UT" - Daily Orbit Update

MPEC 2008-J72 - "00:13 UT" - 2008 CT190

Observers  on 15 May '08

A total of 23 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 9 in MPECs 2008-J73 & 2008-J74 -- 2008 JZ7, 2008 JW19, 2008 JR26, 2008 JR14, 2008 JM20, 2008 HC2, 2008 GP20, 2008 GC110, 2008 GA4
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-J73 -- 1980
I77CEAMIG-REA in Brazil, 1 in MPEC 2008-J76 -- C/2008 J5
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2008-J73, 2008-J77 & 2008-J78 -- 2008 JM20, C/2008 J6, 2008 HD3, 2005 NB7, 2000 AD205, 69230, 139289, 7822
113Drebach Obs. in Germany, 1 in MPEC 2008-J73 -- 35107
639Dresden Obs. in Germany, 2 in MPEC 2008-J73 -- 2008 HS3, 2007 VQ4
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2008-J73 -- 2008 JL24
704LINEAR in New Mexico, 1 in MPEC 2008-J74 -- 2008 JR26
688Lowell Obs. Anderson Mesa Station in Arizona, 1 in MPEC 2008-J72 -- 2008 CT190
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2008-J73 -- 11398
900Moriyama Obs. in Japan, 1 in MPEC 2008-J78 -- C/2008 J6
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2008-J73 -- 2008 JL24, 2008 HV4, 2006 KV86, 86878, 68278, 11311
675Mt. Palomar in southern California, 1 in MPEC 2008-J72 -- 2008 CT190
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2008-J73 -- 2007 TW68
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-J78 -- C/2008 J6
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2008-J76 -- C/2008 J5
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2008-J74 & 2008-J78 -- 2008 JR26, C/2008 J6
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2008-J73, 2008-J76 & 2008-J79 -- 2008 JY30, C/2008 J5, 2008 BC22, 2004 HE62
510Siegen Obs. in Germany, 2 in MPEC 2008-J73 -- 2008 HW1, 2005 NB7
H85Silver Spring Obs. in Maryland, 1 in MPEC 2008-J73 -- 2008 JO
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-J73 & 2008-J75 -- 2008 JS26, 2008 HF2, 85628, 68348
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2008-J73 & 2008-J75 -- 2008 JS26, 2008 HU4, 2008 HA38, 2008 GG2
F85Tiki Obs. in Tahiti, 4 in MPECs 2008-J74, 2008-J76, 2008-J78 & 2008-J79 -- 2008 JY30, 2008 JR26, C/2008 J6, C/2008 J5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 May '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 JL24JPL Sentry1333209115.3e-07-8.92-8.920JPL: "Analysis based on 74 observations spanning 3.3672 days (2008-May-11.25353 to 2008-May-14.62073)." Diameter approximately 0.004 km. from mean, weighted H=29.6.
NEODyS1333R E M O V E D-
2008 HU4JPL Sentry13332061-2086133.6e-04-5.49-5.830JPL: "Analysis based on 45 observations spanning 13.959 days (2008-Apr-30.32444 to 2008-May-14.28331)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS13332054-2086233.09e-04-5.55-5.930NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/14.284."

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 15 May '08

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

2354Grabbed MPEC 2008-J79 - 2008 JY30 - see above
2143Grabbed MPEC 2008-J77 - 2000 AD205 - see above
Grabbed MPEC 2008-J78 - Comet C/2008 J6 (Hill) - see above
1730Grabbed MPEC 2008-J76 - Comet C/2008 J5 (Garradd) - see above
1510Grabbed MPEC 2008-J74 - 2008 JR26 - see above
Grabbed MPEC 2008-J75 - 2008 JS26 - see above
1333Noted that JPL Sentry has updated its 2008 HU4 risk assessment - see above
Noted that NEODyS has updated its 2008 HU4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 JL24 risk assessment - see above
Noted that NEODyS has removed 2008 JL24 as an impact risk - see above
Grabbed MPEC 2008-J73 - Daily Orbit Update - see above
0021Grabbed MPEC 2008-J72 - 2008 CT190 - see above