Contents  on 7 June '08

Resources:

NOTE: These news pages will update less often and at irregular intervals through June 12th.

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 7 June '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six 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 7 June '08

Minor Planet Electronic Circulars

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


<< DOU on 7 June '08 >>  MPEC 2008-L30 - "06:08 UT" - Daily Orbit Update

Observers  on 7 June '08

Twelve observing facilities appear in today's MPEC.

CodeObserver / observatory
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-L30 -- 2008 LG2
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-L30 -- 2008 JR26, 2008 HB38, 65996, 162039, 102873, 7482
F654Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 2 in MPEC 2008-L30 -- 2008 KZ5, 2008 KN11
F656program code 6 via Faulkes Telescope North in Hawaii, 2 in MPEC 2008-L30 -- 2008 LB, 2008 KX2
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2008-L30 -- 2008 KX2
J95Great Shefford Obs. in England, 4 in MPEC 2008-L30 -- 2008 LH2, 2008 LG2, 2008 LB, 2008 ED69
H51Greiner Research Obs. (GRO) in Wisconsin, 3 in MPEC 2008-L30 -- 2008 KW2, 2007 VQ4, 2007 LL
715Jornada Obs. in New Mexico, 1 in MPEC 2008-L30 -- 2008 KP
304Las Campanas Obs. in Chile, 1 in MPEC 2008-L30 -- 2005 UY5
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L30 -- 2008 FK7
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-L30 -- 85236
291Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2008-L30 -- 2008 LG2, 2008 LC, 2008 LA, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2008 KE6, 2008 JW19, 2008 JV19, 2008 JT19, 2008 HU4
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-L30 -- 2008 LG2, 2008 JQ14
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2336 and JPL at 2342 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.
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
2008 LG2NEODyS13102036-2088186.19e-05-4.57-4.580NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/07.069."
JPL Sentry13092034-2105306.0e-05-4.60-4.630JPL: "Analysis based on 25 observations spanning 3.7513 days (2008-Jun-03.31737 to 2008-Jun-07.06871)." Diameter approximately 0.029 km. from mean, weighted H=25.3.
2008 LBNEODyS1310206411.42e-08-8.44-8.440NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/06/01.274 to 2008/06/07.050."
JPL Sentry1309206419.2e-10-9.63-9.630JPL: "Analysis based on 25 observations spanning 5.7764 days (2008-Jun-01.27329 to 2008-Jun-07.04967)." Diameter approximately 0.020 km. from mean, weighted H=26.1.
2008 LAJPL Sentry13092027-2095654.3e-05-3.58-4.200JPL: "Analysis based on 32 observations spanning 5.0723 days (2008-Jun-01.16922 to 2008-Jun-06.24156)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS13092015-2088854.14e-05-3.59-4.220NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/06.242."
2008 KN11JPL Sentry13092037-204656.6e-07-5.09-5.410JPL: "Analysis based on 62 observations spanning 7.0519 days (2008-May-30.33435 to 2008-Jun-06.38622)." Diameter approximately 0.078 km. from mean, weighted H=23.2.
NEODyS13092037-204676.84e-07-5.07-5.400NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/06.387."
2008 KZ5JPL Sentry1309R E M O V E DJPL: Risk listing removed at 0853 UTC.
2008 HU4JPL Sentry13092054-207931.0e-06-7.98-8.130JPL: "Analysis based on 67 observations spanning 37.083 days (2008-Apr-30.32444 to 2008-Jun-06.40759)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
NEODyS13092065-207975.14e-06-7.30-7.730NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/06/06.408."

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 7 June '08

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

1310Noted that NEODyS has updated its 2008 LB risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
1309Noted 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 KN11 risk assessment - see above
Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has removed 2008 KZ5 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Noted that NEODyS has updated its 2008 LA risk assessment - see above
Noted that JPL Sentry has reposted 2008 LB as an impact risk - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Grabbed MPEC 2008-L30 - Daily Orbit Update - see above