Contents  on 4 June '08

Resources:

NOTE: These news page will update less often and at sometimes irregular intervals from May 31st through approximately June 7th.

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 4 June '08

The MPC's NEO Confirmation Page has 4 listings: 3 new, 1 updated

When last checked at 2126 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and one updated listings. Of these, three were "one nighters." The Tracking News counted a total of seven objects listed on the NEOCP at some point on this day.

New MPECs  on 4 June '08

Minor Planet Electronic Circulars

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


MPEC 2008-L17 - "23:04 UT" - 2008 LG2


MPEC 2008-L16 - "18:00 UT" - 2008 LC2


<< DOU on 4 June '08 >>  MPEC 2008-L15 - "06:08 UT" - Daily Orbit Update

Observers  on 4 June '08

Eleven observing facilities appeared in this day's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-L15 -- 2008 KE6
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-L15 -- 2008 KW2, 2008 KV2, 2008 KN11, 2008 JO20, 2008 HE66, 2003 NZ6
F656program code 6 via Faulkes Telescope North in Hawaii, 2 in MPEC 2008-L15 -- 2008 LD, 2008 KX2
704LINEAR in New Mexico, 7 in MPECs 2008-L15 & 2008-L17 -- 2008 LG2, 2007 XH16, 2007 LL, 2005 TU45, 35107, 22099, 8567
304Las Campanas Obs. in Chile, 1 in MPEC 2008-L15 -- 2005 UY5
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L15 -- 2008 AF4
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2008-L15 & 2008-L16 -- 2008 LC2, 164184
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-L15 -- 2005 TU45, 2005 CF41, 154278
691Spacewatch 0.9m telescope in Arizona, 10 in MPEC 2008-L15 -- 2008 KS, 2008 KQ, 2008 KP, 2008 KC6, 2008 HV4, 2008 GA110, 2004 XM29, 89958, 31210, 154453
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2008-L15 & 2008-L16 -- 2008 LC2, 2008 LC, 2008 LB, 2008 LA, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2008 KD6, 2008 JZ30, 2008 JV19, 2008 JT19, 2008 HU4, 2007 SQ6, 2003 FQ6
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-L15 -- 2006 WZ2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2126 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 LDNEODyS19252049-2090413.99e-05-6.60-6.780NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/06/02.292 to 2008/06/03.435."
JPL Sentry13252049-2107555.6e-05-6.52-6.830JPL: "Analysis based on 19 observations spanning 1.1424 days (2008-Jun-02.29145 to 2008-Jun-03.433866)." Diameter approximately 0.005 km. from mean, weighted H=29.1.
2008 LBNEODyS13262051-208427.92e-08-7.70-7.750NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/06/01.274 to 2008/06/03.270."
JPL Sentry13252064-210148.4e-08-7.65-7.990JPL: "Analysis based on 13 observations spanning 1.9961 days (2008-Jun-01.27329 to 2008-Jun-03.26936)." Diameter approximately 0.023 km. from mean, weighted H=25.9.
2008 LANEODyS19252015-20881632.82e-05-3.62-4.340NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/04.154."
JPL Sentry13252014-21071682.7e-05-3.62-4.360JPL: "Analysis based on 22 observations spanning 2.9844 days (2008-Jun-01.16922 to 2008-Jun-04.15364)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
2008 KN11NEODyS19252037-204635.33e-07-5.17-5.330NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/03.322."
JPL Sentry13252037-204645.5e-07-5.16-5.340JPL: "Analysis based on 50 observations spanning 3.9864 days (2008-May-30.33435 to 2008-Jun-03.32077)." Diameter approximately 0.079 km. from mean, weighted H=23.2.
2008 KD6NEODyS1924R E M O V E D-
JPL Sentry1325R E M O V E DJPL: Risk listing removed at 0852 UTC.
2008 KZ5JPL Sentry1325202616.0e-10-6.46-6.460JPL: "Analysis based on 64 observations spanning 5.9501 days (2008-May-29.22802 to 2008-Jun-04.17809)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
NEODyS1924R E M O V E D-
2008 HU4NEODyS19252075-208854.08e-06-7.40-7.830NEODyS: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/06/03.371."
JPL Sentry1325205415.9e-08-9.07-9.070JPL: "Analysis based on 65 observations spanning 34.046 days (2008-Apr-30.32444 to 2008-Jun-03.36995)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
2008 AF4JPL Sentry13252096-210031.1e-06-3.65-3.860JPL: "Analysis based on 606 observations spanning 130.92 days (2008-Jan-10.39652 to 2008-May-20.315005)." Diameter approximately 0.400 km. from mean, weighted H=19.7.

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 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 4 June '08

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

0056 6/5Grabbed MPEC 2008-L17 - 2008 LG2 - see above
1925Noted that NEODyS has updated its 2008 HU4 risk assessment - see above
Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted that NEODyS has updated its 2008 LA risk assessment - see above
Noted that NEODyS has updated its 2008 LD risk assessment - see above
1924Noted that NEODyS has removed 2008 KD6 as an impact risk - see above
Noted that NEODyS has removed 2008 KZ5 as an impact risk - see above
1803Grabbed MPEC 2008-L16 - 2008 LC2 - see above
1326Noted that NEODyS has updated its 2008 LB risk assessment - see above
1325Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 HU4 risk assessment - see above
Noted that JPL Sentry has removed 2008 KD6 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has updated its 2008 KZ5 risk assessment - see above
Noted that JPL Sentry has updated its 2008 LA risk assessment - see above
Noted that JPL Sentry has updated its 2008 LB risk assessment - see above
Noted that JPL Sentry has updated its 2008 LD risk assessment - see above
Grabbed MPEC 2008-L15 - Daily Orbit Update - see above