Contents  on 10 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 10 June '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2318 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter." So far The Tracking News has counted a total of two 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 10 June '08

Minor Planet Electronic Circulars

As of last check at 2318 UTC, there have been five MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-L45 - "15:27 UT" - Comet P/1997 V1 = 2008 L1 (Larsen)


<< DOU on 10 June '08 >>  MPEC 2008-L44 - "06:08 UT" - Daily Orbit Update


MPEC 2008-L43 - "03:52 UT" - 2003 OB4


MPEC 2008-L42 - "01:39 UT" - 2008 LW8


MPEC 2008-L41 - "01:24 UT" - 2007 NC7

Observers  on 10 June '08

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

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2008-L44 -- 2008 LH2, 2008 LG2
H55Astronomical Research Obs. (ARO) in Illinois, 5 in MPEC 2008-L44 -- 2008 LG2, 2008 LC, 2008 KW2, 2008 KN11, 2008 JT35
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2008-L42 & 2008-L44 -- 2008 LW8, 2008 KV2, 2008 HF2, 2005 CF41, 85989, 162186, 1980
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-L44 -- 2008 JO, 2008 JF, 2008 HE66, 173689
J27El Guijo Obs. in Spain, 1 in MPEC 2008-L44 -- 35107
J95Great Shefford Obs. in England, 6 in MPECs 2008-L43 & 2008-L44 -- 2008 LH2, 2008 LG2, 2008 LA, 2008 KN11, 2008 JT35, 2003 OB4
682Kanab Obs. in Utah, 1 in MPEC 2008-L44 -- 2008 JO24
585Kiev Comet Station in the Ukraine, 1 in MPEC 2008-L44 -- 7889
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L44 -- 2007 GG
118Modra Obs. in Slovakia, 1 in MPEC 2008-L42 -- 2008 LW8
474Mt. John Obs. in New Zealand, 11 in MPECs 2008-L42 & 2008-L44 -- 2008 LW8, 2008 LH2, 2008 KB6, 2008 CL1, 2008 CA6, 2008 AG33, 2007 YQ56, 2005 NJ1, 2005 LZ42, 2003 YO3, 2001 WJ2
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-L44 -- 2003 YO3
675Mt. Palomar in southern California, 1 in MPEC 2008-L41 -- 2007 NC7
J93Mt. Tuffley Obs. in England, 5 in MPEC 2008-L44 -- 35107, 137170, 7092, 3288, 1980
A13Naef Obs. in Switzerland, 2 in MPEC 2008-L44 -- 2008 HE66, 8567
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2008-L44 -- 2008 AG33
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2008-L44 & 2008-L45 -- 2008 LG2, 2008 LC, 2008 LA, P/2008 L1, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2008 GE110
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-L42 -- 2008 LW8
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-L44 -- 2008 JF
A48Verona Obs. in Italy, 2 in MPEC 2008-L44 -- 2008 JP14, 2007 VQ4
198Wildberg Obs. in Germany, 1 in MPEC 2008-L44 -- 2008 LW8
648Winer Obs. in Arizona, 1 in MPEC 2008-L44 -- 2008 JT35
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2318 and JPL at 2319 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 LW8NEODyS13492013-2087696.84e-08-3.05-3.550NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/06/09.414 to 2008/06/10.025."
JPL Sentry13462013-2107697.1e-08-3.02-3.360JPL: "Analysis based on 22 observations spanning .61112 days (2008-Jun-09.41357 to 2008-Jun-10.02469)." Diameter approximately 1.200 km. from mean, weighted H=17.2.
2008 LG2NEODyS13492037-2087133.14e-05-4.89-4.900NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/09.967."
JPL Sentry13462038-2105193.4e-05-4.89-4.950JPL: "Analysis based on 67 observations spanning 6.6489 days (2008-Jun-03.31737 to 2008-Jun-09.96626)." Diameter approximately 0.029 km. from mean, weighted H=25.4.
2008 LANEODyS13492026-2088294.1e-05-3.65-4.090NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/09.954."
JPL Sentry13462027-2093274.0e-05-3.66-4.090JPL: "Analysis based on 42 observations spanning 8.7842 days (2008-Jun-01.16922 to 2008-Jun-09.95341)." Diameter approximately 0.075 km. from mean, weighted H=23.3.
2008 KN11NEODyS13472030-204646.3e-07-5.10-5.380NEODyS: "Based on 78 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/10.000."
JPL Sentry13462037-204646.7e-07-5.09-5.400JPL: "Analysis based on 78 observations spanning 10.665 days (2008-May-30.33435 to 2008-Jun-09.99962)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
2008 JO24JPL Sentry2142R E M O V E DJPL #2 for the day: Risk listing removed at 1847 UTC.

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 10 June '08

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

2142Noted that JPL Sentry has removed 2008 JO24 as an impact risk - see above
Grabbed MPEC 2008-L45 - Comet P/1997 V1 = 2008 L1 (Larsen) - see above
The NEOCP has become active
1349Noted that NEODyS has updated its 2008 LA risk assessment - see above
Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
1347Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
1346Noted that JPL Sentry has posted 2008 JO24 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 LA risk assessment - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Noted that JPL Sentry has posted 2008 LW8 as an impact risk - see above
Noted that NEODyS has posted 2008 LW8 as an impact risk - see above
Grabbed MPEC 2008-L43 - 2003 OB4 - see above
Grabbed MPEC 2008-L44 - Daily Orbit Update - see above
0329Grabbed MPEC 2008-L41 - 2007 NC7 - see above
Grabbed MPEC 2008-L42 - 2008 LW8 - see above
0328The NEOCP has become empty