Contents  on 1 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 1 June '08

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, four 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 1 June '08

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 1 June '08 >>  MPEC 2008-L02 - "06:08 UT" - Daily Orbit Update


MPEC 2008-L01 - "02:18 UT" - 2008 KB12

Observers  on 1 June '08

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2008-L01 -- 2008 KB12
432Boambee Obs. in New South Wales, 5 in MPEC 2008-L02 -- 2008 BC22, 2005 GO21, 39572, 21088, 3691
I77CEAMIG-REA in Brazil, 1 in MPEC 2008-L01 -- 2008 KB12
807,Ovidiu Vaduvescu via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2008-L02 -- 2008 KW2, 2008 KV2, 2008 KF6, 2008 EC69
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-L02 -- 2008 KN11, 2008 HB38, 2003 NZ6, 2000 AD205
151Eschenberg Obs. in Switzerland, 6 in MPECs 2008-L01 & 2008-L02 -- 2008 KZ5, 2008 KB12, 2008 JP14, 2008 HS3, 2005 NB7, 2000 AD205
F654Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-L02 -- 2008 KZ5
J95Great Shefford Obs. in England, 1 in MPEC 2008-L02 -- 2008 KX2
B34Green Island Obs. in Cyprus, 4 in MPEC 2008-L02 -- 2008 HS3, 2007 VR183, 2007 VQ4, 2002 JC
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2008-L02 -- 2008 KO
682Kanab Obs. in Utah, 1 in MPEC 2008-L02 -- 2008 KZ5
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-L02 -- 2008 BT18, 2007 XH16
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2008-L02 -- 2008 KZ5, 2008 KY5, 2006 HR29, 24445, 7482
A13Naef Obs. in Switzerland, 2 in MPEC 2008-L02 -- 2005 NB7, 2000 AD205
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-L02 -- 2008 HS3, 2005 TU45, 2005 NB7, 2005 CF41, 2000 AD205, 11398
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-L02 -- 2008 KF6
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2008-L02 -- 2005 OG3, 2004 SX
H67Stonegate Obs. in Michigan, 1 in MPEC 2008-L02 -- 2005 NB7
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-L02 -- 2008 KT
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-L02 -- 2008 KP
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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 KN11NEODyS13102031-2063321.18e-05-3.82-4.590NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/05/31.390."
JPL Sentry13092031-2056268.7e-06-3.92-4.610JPL: "Analysis based on 36 observations spanning 1.0546 days (2008-May-30.33435 to 2008-May-31.38895)." Diameter approximately 0.083 km. from mean, weighted H=23.1.
2008 KF6JPL Sentry1309R E M O V E DJPL: Risk listing removed at 0850 UTC.
NEODyS1309R E M O V E D-
2008 KZ5NEODyS13102013-2090255.52e-07-3.70-4.160NEODyS: "Based on 51 optical observations (of which 1 are rejected as outliers) from 2008/05/29.229 to 2008/05/31.918."
JPL Sentry13092013-21071733.0e-06-3.05-3.980JPL: "Analysis based on 50 observations spanning 2.6892 days (2008-May-29.22802 to 2008-May-31.91721)." Diameter approximately 0.355 km. from mean, weighted H=19.9.
2008 KTJPL Sentry13092091-210742.3e-07-8.68-9.080JPL: "Analysis based on 27 observations spanning 3.9508 days (2008-May-28.25417 to 2008-Jun-01.20493)." Diameter approximately 0.008 km. from mean, weighted H=28.2.
2008 KOJPL Sentry13092049-206131.4e-06-5.17-5.510JPL: "Analysis based on 44 observations spanning 3.8882 days (2008-May-27.3758 to 2008-May-31.26395)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
NEODyS13092049-206131.38e-06-5.19-5.530NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/05/27.377 to 2008/05/31.265."

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 1 June '08

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

1310Noted that NEODyS has updated its 2008 KZ5 risk assessment - see above
1309Noted that JPL Sentry has removed 2008 KF6 as an impact risk - see above
Noted that NEODyS has removed 2008 KF6 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that NEODyS has posted 2008 KN11 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 KO risk assessment - see above
Noted that NEODyS has updated its 2008 KO risk assessment - see above
Noted that JPL Sentry has updated its 2008 KT risk assessment - see above
Noted that JPL Sentry has updated its 2008 KZ5 risk assessment - see above
Grabbed MPEC 2008-L02 - Daily Orbit Update - see above
0450Grabbed MPEC 2008-L01 - 2008 KB12 - see above