Dawn being mated to its 
upper-stage booster. Credit NASA.



The Dawn asteroid-mission spacecraft being guided down to mate onto its upper-stage booster rocket at Astrotech. From an image released by Kennedy Space Center on June 21st, credit: NASA.


Contents  on 26 June '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 June '07

Minor-Object Science  on 26 June '07

NEOCP Activity  on 26 June '07

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2324 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, one was a "one nighter." So far Major News has counted a total of nine objects listed on the NEOCP at some point today.

New MPECs  on 26 June '07

Minor Planet Electronic Circulars

As of last check at 2324 UTC, there have been four MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-M45 - "22:08 UT" - Comet C/2007 M3 (LINEAR)


MPEC 2007-M44 - "19:15 UT" - 2007 MC24


MPEC 2007-M43 - "19:12 UT" - 2007 MB24


<< DOU on 26 June '07 >>  MPEC 2007-M42 - "06:06 UT" - Daily Orbit Update

Observers  on 26 June '07

A total of 20 observing facilities appear in today's MPECs.

A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2007-M45 -- C/2007 M3
300Bisei Spaceguard Center in Japan, 2 in MPEC 2007-M42 -- 2007 FV42, 2005 AD13
A88Bolzaneto Obs., 1 in MPEC 2007-M42 -- 85275
703Catalina Sky Survey in Arizona, 6 in MPECs 2007-M42 & 2007-M44 -- 2007 MC24, 2007 MB4, 2007 FK1, 2002 PQ142, 136849, 2100
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-M43 -- 2007 MB24
355Hadano Obs. in Japan, 3 in MPEC 2007-M42 -- 2007 FV42, 2007 DF8, 136818
G88LAMP Obs. in Arizona, 1 in MPEC 2007-M45 -- C/2007 M3
704LINEAR in New Mexico, 2 in MPECs 2007-M43 & 2007-M45 -- C/2007 M3, 2007 MB24
932McCarthy Obs. in Connecticut, 1 in MPEC 2007-M43 -- 2007 MB24
118Modra Obs. in Slovakia, 2 in MPECs 2007-M43 & 2007-M45 -- C/2007 M3, 2007 MB24
213Montcabre Obs. in Spain, 1 in MPEC 2007-M45 -- C/2007 M3
A24New Millennium Obs. in Italy, 7 in MPECs 2007-M42 & 2007-M43 -- 2007 MB24, 2005 NW44, 2004 ST9, 86039, 85953, 85275, 1943
H45Petit Jean Mtn. South Obs. in Arkansas, 7 in MPEC 2007-M42 -- 2007 MB4, 2007 MM13, 2007 LA15, 2007 LV8, 2007 LF, 2006 KE89, 136874
H062Robert Hutsebaut in Belgium via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2007-M43 -- 2007 MB24
473Remanzacco Obs. in Italy, 1 in MPEC 2007-M43 -- 2007 MB24
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2007-M43 -- 2007 MB24
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-M44 -- 2007 MC24
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2007-M42 & 2007-M44 -- 2007 MC24, 2007 JG16, 2007 MG, 2002 SR
673Table Mtn. Obs. in southern California, 1 in MPEC 2007-M45 -- C/2007 M3
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2007-M43 & 2007-M44 -- 2007 MC24, 2007 MB24
J70Vega del Thader Obs. in Spain, 1 in MPEC 2007-M45 -- C/2007 M3

Impact Risk Monitoring  on 26 June '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2324 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2007 MB24JPL23242025-2106531.1e-07-3.31-4.300JPL: "Analysis based on 43 observations spanning 2.0952 days (2007-Jun-24.32377 to 2007-Jun-26.419)." Diameter approximately 0.685 km. from mean, weighted H=18.5.
2001 BB16NEODyS1702208414.76e-07-5.62-5.620NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2001/01/20.084 to 2001/03/24.289."

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 June '07

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

2324Noted that JPL has posted 2007 MB24 as an impact risk - see above
Grabbed MPEC 2007-M45 - Comet C/2007 M3 (LINEAR) - see above
2121Grabbed MPEC 2007-M43 - 2007 MB24 - see above
Grabbed MPEC 2007-M44 - 2007 MC24 - see above
2001Added link to news story, "Environmental Impact Statement for PS4"
Added link to news story, "Thinking Big about Space Telescopes"
Added link to news story, "Crater Could Solve 1908 Tunguska Meteor Mystery"
Added link to news story, "Rep. Rohrabacher Requests Hearing To Assess Near Earth Objects Threat"
1701Noted that NEODyS has posted 2001 BB16 as an impact risk - see above
1435Added MOS paper, "Can Protostellar Jets Drive Supersonic Turbulence in Molecular Clouds?" - see above
Added MOS paper, "Disk-Planet Interaction Simulations: (I) Baroclinic Generation of Vortensity and Non-Axisymmetric Rossby-Wave-Instability" - see above
Added MOS paper, "Evolution of dust and ice features around FU Orionis objects" - see above
Added MOS paper, "Relative velocities among accreting planetesimals in binary systems: the circumbinary case" - see above
Added MOS paper, "Stokes trapping and planet formation" - see above
Added MOS paper, "The Stellar-Disk Electric (Short) Circuit: Observational Predictions for a YSO Jet Flow" - see above
1331Grabbed MPEC 2007-M42 - Daily Orbit Update - see above