Contents  on 18 June '08

Resources:

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 18 June '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs  on 18 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-M13 - "21:53 UT" - Comets C/2008 K1, 2008 K2, 2008 K3, 2008 K4, 2008 K5 (SOHO)


<< DOU on 18 June '08 >>  MPEC 2008-M12 - "06:08 UT" - Daily Orbit Update

Observers  on 18 June '08

Nine observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 21 in MPEC 2008-M12 -- 2008 LW8, 2008 LW16, 2008 LQ16, 2008 LH2, 2008 LG2, 2008 LA, 2008 KZ5, 2008 KW2, 2008 KV2, 2008 KN11, 2008 JZ7, 2008 JT35, 2008 JR26, 2008 JQ14, 2008 JP14, 2008 HE66, 2008 GA110, 2007 SQ6, 2005 AN19, 2000 UT16, 2000 RL77
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2008-M12 -- 35107, 7889
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-M12 -- 2000 AD205
J27El Guijo Obs. in Spain, 2 in MPEC 2008-M12 -- 85818, 137170
J95Great Shefford Obs. in England, 2 in MPEC 2008-M12 -- 2008 LQ16, 2008 KN11
585Kiev Comet Station in the Ukraine, 1 in MPEC 2008-M12 -- 7889
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2008-M12 -- 2008 JT35, 2007 LL, 2005 TU45, 2005 NB7, 2000 AD205, 54789, 35107, 154278, 11398, 7889
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 5 in MPEC 2008-M13 -- C/2008 K5, C/2008 K4, C/2008 K3, C/2008 K2, C/2008 K1
2493LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. in Earth-Sun L1 HALO orbit, 1 in MPEC 2008-M13 -- C/2008 K4
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-M12 -- 2004 VT60
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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.
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 LW16NEODyS13352043-208777.24e-07-3.48-3.810NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/06/15.382 to 2008/06/17.322."
JPL Sentry13342026-2107258.7e-07-3.40-3.740JPL: "Analysis based on 19 observations spanning 1.9395 days (2008-Jun-15.38141 to 2008-Jun-17.320951)." Diameter approximately 0.410 km. from mean, weighted H=19.6.
2008 LG2NEODyS13352041-2088163.57e-06-5.93-6.320NEODyS: "Based on 98 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/17.131."
JPL Sentry13342038-2103154.7e-06-5.82-6.320JPL: "Analysis based on 98 observations spanning 13.813 days (2008-Jun-03.31737 to 2008-Jun-17.130616)." Diameter approximately 0.030 km. from mean, weighted H=25.3.
2008 LANEODyS13352058-207962.94e-05-3.74-3.770NEODyS: "Based on 58 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/17.147."
JPL Sentry13342058-210783.1e-05-3.72-3.760JPL: "Analysis based on 58 observations spanning 15.977 days (2008-Jun-01.16922 to 2008-Jun-17.146382)." Diameter approximately 0.076 km. from mean, weighted H=23.2.
2008 KN11NEODyS1335204611.33e-07-5.85-5.850NEODyS: "Based on 110 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/17.971."
JPL Sentry1334204611.9e-07-5.69-5.690JPL: "Analysis based on 110 observations spanning 18.636 days (2008-May-30.33435 to 2008-Jun-17.97046)." Diameter approximately 0.076 km. from mean, weighted H=23.2.

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 18 June '08

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

2357Grabbed MPEC 2008-M13 - Comets C/2008 K1, 2008 K2, 2008 K3, 2008 K4, 2008 K5 (SOHO) - see above
1335Noted 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 LG2 risk assessment - see above
Noted that NEODyS has updated its 2008 LW16 risk assessment - see above
1334Noted 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 updated its 2008 LW16 risk assessment - see above
Grabbed MPEC 2008-M12 - Daily Orbit Update - see above
0443The NEOCP has become empty