Artist's view of Canada's planned 
asteroid-hunting satellite. Credit: NEOSSat.

It was announced June 26th that "Canada is building the world's first space telescope designed to detect and track asteroids as well as satellites." Beginning in 2010, Canada's NESS (Near Earth Space Surveillance) asteroid search program plans to use the NEOSSat microsatellite's 0.15-meter telescope "to detect asteroids delivering as few as 50 photons of light in a 100-second exposure," and to look "along Earth's orbit [to] find 'low and slow' asteroids." Image credit: NEOSSat.

Contents  on 28 June '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 28 June '08

The MPC's NEO Confirmation Page has 6 listings: 4 new, 2 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and two updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of seven 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 28 June '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-M42 - "22:38 UT" - 2008 JF

<< DOU on 28 June '08 >>  MPEC 2008-M41 - "06:06 UT" - Daily Orbit Update

Observers  on 28 June '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-M41 -- 2008 JF
B37Ametlla del Valles Obs. in Spain, 6 in MPEC 2008-M41 -- 2008 HS3, 35107, 163335, 154278, 137170, 11398
H55Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2008-M41 & 2008-M42 -- 2008 LA, 2008 JF
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-M41 -- 2007 LL
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-M41 -- 136818
J27El Guijo Obs. in Spain, 2 in MPEC 2008-M41 -- 35107, 11398
B19Iluro Obs. in Spain, 7 in MPEC 2008-M41 -- 2008 JT35, 2005 TU45, 54789, 173689, 8567, 7482, 1917
A13Naef Obs. in Switzerland, 2 in MPEC 2008-M41 -- 65996, 164400
E12Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-M41 -- 2000 VA45, 85839, 68950, 53110, 188452, 162723, 153591, 5653
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2008-M42 -- 2008 JF
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-M42 -- 2008 JF
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-M41 -- 2007 SJ
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 LANEODyS14272058-206139.78e-05-3.16-3.160NEODyS: "Based on 79 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/26.119."
JPL Sentry14252058-210751.0e-04-3.15-3.150JPL: "Analysis based on 79 observations spanning 24.949 days (2008-Jun-01.16922 to 2008-Jun-26.118624)." Diameter approximately 0.080 km. from mean, weighted H=23.1.

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 28 June '08

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

2357Grabbed MPEC 2008-M42 - 2008 JF - see above
1427Noted that NEODyS has updated its 2008 LA risk assessment - see above
1425Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Grabbed MPEC 2008-M41 - Daily Orbit Update - see above
0555The NEOCP has become active