Contents  on 26 May '07

WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.

Minor-Object News  on 26 May '07

Minor-Object Science  on 26 May '07

NEOCP Activity  on 26 May '07

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Of these, one was a "one nighter." Major News counted a total of seven objects listed on the NEOCP at some point on this day.

New MPECs  on 26 May '07

Minor Planet Electronic Circulars

There were four MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-K58 - "21:07 UT" - 2007 HX4

MPEC 2007-K57 - "17:01 UT" - Comet C/2007 K4 (Gibbs)

MPEC 2007-K56 - "16:55 UT" - Comet C/2007 K3 (Siding Spring)

<< DOU on 26 May '07 >>  MPEC 2007-K55 - "06:09 UT" - Daily Orbit Update

Observers  on 26 May '07

Eighteen observing facilities appeared in this day's MPECs.

703Catalina Sky Survey in Arizona, 3 in MPECs 2007-K55 & 2007-K57 -- C/2007 K4, 2000 KW43, 145656
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-K57 -- C/2007 K4
J95Great Shefford Obs. in England, 1 in MPEC 2007-K56 -- C/2007 K3
A17Guidestar Obs. in Germany, 2 in MPECs 2007-K55 & 2007-K57 -- C/2007 K4, 2007 KE4
704LINEAR in New Mexico, 4 in MPEC 2007-K55 -- 2007 DZ40, 2002 KF4, 2002 AC2, 138883
A65Le Couvent de Lentin Obs. in France, 2 in MPEC 2007-K55 -- 145656, 86829
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2007-K55 -- 2002 KF4
232Masquefa Obs. in Spain, 1 in MPEC 2007-K55 -- 2002 KF4
932McCarthy Obs. in Connecticut, 2 in MPEC 2007-K55 -- 2007 KE4, 2006 WE129
118Modra Obs. in Slovakia, 1 in MPEC 2007-K57 -- C/2007 K4
G96Mt. Lemmon Survey in Arizona, 2 in MPECs 2007-K56 & 2007-K57 -- C/2007 K4, C/2007 K3
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2007-K58 -- 2007 HX4
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2007-K58 -- 2007 HX4
A24New Millennium Obs. in Italy, 8 in MPEC 2007-K55 -- 2007 FV42, 2007 FK1, 2006 KE89, 2005 AD13, 2002 KF4, 136874, 85275, 39796
H36Sandlot Obs. in Kansas, 1 in MPEC 2007-K57 -- C/2007 K4
E12Siding Spring Survey in New South Wales, 5 in MPECs 2007-K55, 2007-K56 & 2007-K57 -- C/2007 K4, C/2007 K3, 2007 DS84, 8037, 7889
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2007-K55 -- 2007 KV2, 2007 KK, 2007 JY2
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-K55 -- 2007 JE40

Impact Risk Monitoring  on 26 May '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 UTC)
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2080.
For the latest official risk assessments, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2007 KO4NEODyS18192015-2080631.92e-06-4.44-4.630NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2007/05/22.266 to 2007/05/25.272."
2007 KE4NEODyS1659202911.63e-05-4.57-4.570NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2007/05/24.328 to 2007/05/25.937."
JPL14092026-209642.3e-05-4.52-4.550JPL: "Analysis based on 31 observations spanning 1.6090 days (2007-May-24.32711 to 2007-May-25.93615)." Diameter approximately 0.031 km. from mean, weighted H=25.2.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

For a list of all risk-rated objects recently in view, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from an 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" for more about all this.

Chronology  on 26 May '07

Times are UTC for when the items were noted by Major News.

2136Grabbed MPEC 2007-K58 - 2007 HX4 - see above
1953Added MOS paper, "Martian Dunite NWA 2737: Petrographic constraints on geological history, shock events, and olivine color" - see above
Added news report, "Precoveries"
1819Noted that NEODyS has posted 2007 KO4 as an impact risk - see above
Grabbed MPEC 2007-K57 - Comet C/2007 K4 (Gibbs) - see above
1659Noted that NEODyS has updated its 2007 KE4 risk assessment - see above
Grabbed MPEC 2007-K56 - Comet C/2007 K3 (Siding Spring) - see above
1411Added link to news story, "'Our eyes hurt from the light'"
1409Noted that JPL has updated its 2007 KE4 risk assessment - see above
Grabbed MPEC 2007-K55 - Daily Orbit Update - see above