Sat. AM bolide E of Sacramento, 
Calif. Credit: Larry Stange/YCS.

Saturday morning's bolide east of Sacramento, California at 12:05am PDT shown here as a composite from the movie caught by Larry Stange's Yuba City Sentinel all-sky camera, part of Sandia Labs' Sentinel System network. See more info below, updated late today.

Contents  on 14 August '07


The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site.

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 this year 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.

Minor-Object News  on 14 August '07

Minor-Object Science  on 14 August '07

NEOCP Activity  on 14 August '07

The MPC's NEO Confirmation Page has 4 listings: 2 new, 2 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and two updated listings. All of these were "one nighters." So far Major News has counted a total of eleven objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see Suno Observatory's Practical guide on how to observe NEOCP object.

New MPECs  on 14 August '07

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-P54 - "21:09 UT" - 2007 PS25

MPEC 2007-P53 - "20:53 UT" - 2007 PR25

MPEC 2007-P52 - "18:11 UT" - 2007 PH25

MPEC 2007-P51 - "11:01 UT" - 2007 PU11

<< DOU on 14 Aug. '07 >>  MPEC 2007-P50 - "06:08 UT" - Daily Orbit Update

MPEC 2007-P49 - "03:57 UT" - 2007 JG43

Observers  on 14 August '07

A total of 22 observing facilities appear in today's MPECs.

H55Astronomical Research Obs. in Illinois, 2 in MPECs 2007-P50 & 2007-P52 -- 2007 PH25, 2002 QY6
413(program code ( via Australian Natl. Univ. 1m telescope in New South Wales, 1 in MPEC 2007-P52 -- 2007 PH25
703Catalina Sky Survey in Arizona, 1 in MPEC 2007-P51 -- 2007 PU11
470Ceccano Obs. in Italy, 1 in MPEC 2007-P51 -- 2007 PU11
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-P51 -- 2007 PU11
J95Great Shefford Obs. in England, 1 in MPEC 2007-P52 -- 2007 PH25
046Klet Obs. in the Czech Republic, 4 in MPECs 2007-P50, 2007-P51 & 2007-P53 -- 2007 PR25, 2007 PU11, 2007 PA8, 2007 CK26
704LINEAR in New Mexico, 14 in MPECs 2007-P50, 2007-P51, 2007-P53 & 2007-P54 -- 2007 PS25, 2007 PR25, 2007 PU11, 2007 PS9, 2007 PQ9, 2000 PN8, 2007 PP9, 2007 PE8, 2007 LR32, 2002 NN4, 143678, 66251, 5143, 4183
699LONEOS in Arizona, 2 in MPEC 2007-P50 -- 2003 RX7, 16636
B33Libbiano Obs. in Italy, 1 in MPEC 2007-P51 -- 2007 PU11
194MPC code 194, 1 in MPEC 2007-P52 -- 2007 PH25
620Mallorca Obs. in Mallorca, 1 in MPEC 2007-P51 -- 2007 PU11
474Mt. John Obs. in New Zealand, 1 in MPEC 2007-P52 -- 2007 PH25
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2007-P49 -- 2007 JG43
675Mt. Palomar in southern California, 1 in MPEC 2007-P49 -- 2007 JG43
A24New Millennium Obs. in Italy, 3 in MPEC 2007-P50 -- 2007 NC5, 2007 LR32, 2007 CK26
H45Petit Jean Mtn. South Obs. in Arkansas, 12 in MPEC 2007-P50 -- 2007 NQ, 2007 MM13, 2007 LA15, 2007 LV8, 2007 CK26, 2006 GB, 145656, 87309, 86324, 85275, 68950, 24443
H06*Rolando Ligustri in Italy via RAS Obs. Mayhill in New Mexico, 2 in MPECs 2007-P51 & 2007-P52 -- 2007 PH25, 2007 PU11
B38Santa Mama Obs. in Italy, 5 in MPEC 2007-P50 -- 2007 PE8, 2007 LR32, 2007 CK26, 87309, 24443
E12Siding Spring Survey in New South Wales, 2 in MPECs 2007-P50 & 2007-P52 -- 2007 PH25, 2007 FV42
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2007-P49 -- 2007 JG43
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2007-P49 & 2007-P50 -- 2007 PA8, 2007 PB8, 2007 CA19, 2007 JG43

Impact Risk Monitoring  on 14 August '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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
2007 PA8NEODyS14222019-2090205.53e-08-2.43-3.040NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2007/08/09.211 to 2007/08/13.903."
JPL14212024-2107311.1e-07-2.39-3.080JPL: "Analysis based on 41 observations spanning 4.6918 days (2007-Aug-09.21035 to 2007-Aug-13.90211)." Diameter approximately 2.478 km. from mean, weighted H=15.7.

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 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 this.

Chronology  on 14 August '07

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

2223Grabbed MPEC 2007-P53 - 2007 PR25 - see above
Grabbed MPEC 2007-P54 - 2007 PS25 - see above
2008Added link to news story, "'Lunar Ark' Proposed in Case of Deadly Impact on Earth"
Added link to news story, "Hot Gas in Space Mimics Life"
Added link to news story, "Puzzle of Hot Young Stars Solved"
Added link to news story, "NASA Decides To Phase Out Delta 2"
2004Grabbed MPEC 2007-P52 - 2007 PH25 - see above
1707Added link to news story, "Meet the New Horizons Pluto Pals!"
Added link to news story, "Life in Space -- New Theory"
1422Noted that NEODyS has updated its 2007 PA8 risk assessment - see above
1421Noted that JPL has updated its 2007 PA8 risk assessment - see above
Grabbed MPEC 2007-P51 - 2007 PU11 - see above
0751Added MOS paper, "Discovery of Two Dust Pillars near the Galactic Plane" - see above
Added news report, "California fireballs"
Added link to news story, "2007 Perseid Shower"
Added link to news story, "First glimpses from the Perseid meteor shower"
Added link to news story, "Meteor Flash Lights Up Sky"
Added link to news story, "Risky Business"
Added link to news story, "Lode residents startled by light, boom"
0749Grabbed MPEC 2007-P50 - Daily Orbit Update - see above
0423Grabbed MPEC 2007-P49 - 2007 JG43 - see above