Contents  on 28 May '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 28 May '08

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

When last checked at 2101 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 five 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 28 May '08

Minor Planet Electronic Circulars

As of last check at 2101 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-K49 - "16:58 UT" - 2002 KY14 = 2007 UL126


MPEC 2008-K48 - "15:46 UT" - 2008 KT


MPEC 2008-K47 - "12:24 UT" - 2008 KS


MPEC 2008-K46 - "11:34 UT" - 2008 KQ


MPEC 2008-K45 - "11:32 UT" - 2008 KP


<< DOU on 28 May '08 >>  MPEC 2008-K44 - "06:07 UT" - Daily Orbit Update

Observers  on 28 May '08

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 16 in MPEC 2008-K44 -- 2008 JT19, 2008 JS26, 2008 JR14, 2008 JP14, 2008 JM20, 2008 JJ, 2008 JG, 2008 HU4, 2008 HS3, 2008 GU20, 2008 GR3, 2008 EX84, 2008 EQ7, 2005 VT5, 2003 KO2, 16912
448Desert Moon Obs. in New Mexico, 2 in MPEC 2008-K44 -- 2008 HV4, 2008 AM33
F654Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-K45 -- 2008 KP
B34Green Island Obs. in Cyprus, 4 in MPEC 2008-K44 -- 2008 HS3, 2007 VQ4, 2005 NB7, 2002 JC
704LINEAR in New Mexico, 5 in MPEC 2008-K44 -- 2005 NB7, 53319, 139289, 7350, 7092
J40Malaga Obs. in Spain, 1 in MPEC 2008-K44 -- 35107
474Mt. John Obs. in New Zealand, 4 in MPECs 2008-K45, 2008-K46, 2008-K47 & 2008-K48 -- 2008 KT, 2008 KS, 2008 KQ, 2008 KP
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2008-K44, 2008-K45, 2008-K47 & 2008-K48 -- 2008 KT, 2008 KS, 2008 KP, 2008 JJ
A13Naef Obs. in Switzerland, 1 in MPEC 2008-K44 -- 2008 JP14
461SZTE Asteroid Program in Hungary, 1 in MPEC 2008-K49 -- 2002 KY14
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-K45 -- 2008 KP
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-K44 & 2008-K46 -- 2008 KQ, 2004 OB, 2002 AF29, 85628
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2008-K44, 2008-K45 & 2008-K46 -- 2008 KQ, 2008 KP, 2008 KO, 2008 JG, 2008 EL6, 2007 WV4
6739Heath Rhoades via Table Mtn. Obs. in southern California, 1 in MPEC 2008-K44 -- 2008 BT18
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 May '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 KTJPL Sentry21012019-2066512.9e-05-6.23-7.050JPL: "Analysis based on 16 observations spanning .28333 days (2008-May-28.25417 to 2008-May-28.5375)." Diameter approximately 0.008 km. from mean, weighted H=28.3.
2008 KONEODyS14252015-2089232.17e-06-4.64-5.140NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/05/27.377 to 2008/05/28.237."
JPL Sentry14242015-2097202.2e-06-4.67-5.070JPL #2 for the day: "Analysis based on 18 observations spanning .86027 days (2008-May-27.3758 to 2008-May-28.23607)." Diameter approximately 0.052 km. from mean, weighted H=24.1.
2008 HU4NEODyS14252056-2082141.71e-05-6.78-7.380NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/27.327."
JPL Sentry14242054-207951.4e-05-6.87-7.380JPL: "Analysis based on 50 observations spanning 27.002 days (2008-Apr-30.32444 to 2008-May-27.326339)." Diameter approximately 0.007 km. from mean, weighted H=28.4.

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 28 May '08

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

2101Noted that JPL Sentry has posted 2008 KT as an impact risk - see above
1704Grabbed MPEC 2008-K48 - 2008 KT - see above
Grabbed MPEC 2008-K49 - 2002 KY14 = 2007 UL126 - see above
1425Noted that NEODyS has updated its 2008 HU4 risk assessment - see above
Grabbed MPEC 2008-K44 - Daily Orbit Update - see above
1424Noted that JPL Sentry has updated its 2008 HU4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 KO risk assessment - see above
Grabbed MPEC 2008-K45 - 2008 KP - see above
Grabbed MPEC 2008-K46 - 2008 KQ - see above
Grabbed MPEC 2008-K47 - 2008 KS - see above
1423Noted that NEODyS has posted 2008 KO as an impact risk - see above
0015Noted that JPL Sentry has posted 2008 KO as an impact risk - see above