Contents  on 16 January '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 this year 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 16 January '08

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had five updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of nineteen 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 16 January '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been eleven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-B11 - "20:35 UT" - 2008 AP33


MPEC 2008-B10 - "20:25 UT" - Comets C/2007 W4, 2007 W5, 2007 W6, 2007 W7, 2007 W8 (SOHO)


MPEC 2008-B09 - "20:19 UT" - Comets C/2007 V11, 2007 V12, 2007 V13, 2007 V14 (SOHO)


MPEC 2008-B08 - "17:46 UT" - 2008 AN33


MPEC 2008-B07 - "17:39 UT" - 2008 AM33


MPEC 2008-B06 - "17:35 UT" - 2008 AL33


MPEC 2008-B05 - "17:29 UT" - 2008 AK33


MPEC 2008-B04 - "17:26 UT" - 2008 AJ33


MPEC 2008-B03 - "17:19 UT" - 2008 AH33


MPEC 2008-B02 - "17:14 UT" - 2008 AG33


<< DOU on 16 Jan. '08 >>  MPEC 2008-B01 - "07:09 UT" - Daily Orbit Update

Observers  on 16 January '08

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-B05 -- 2008 AK33
H55Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2008-B04 & 2008-B11 -- 2008 AP33, 2008 AJ33
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2008-B01 & 2008-B08 -- 2008 AN33, 2007 YB2, 2002 CF26, 85628, 66272, 21374, 20826, 163696, 152942, 138013, 11398, 7092, 3288
333Desert Eagle Obs. in Arizona, 1 in MPEC 2008-B06 -- 2008 AL33
734Farpoint Obs. in Kansas, 2 in MPECs 2008-B03 & 2008-B08 -- 2008 AN33, 2008 AH33
J95Great Shefford Obs. in England, 6 in MPECs 2008-B01, 2008-B03, 2008-B05, 2008-B07, 2008-B08 & 2008-B11 -- 2008 AP33, 2008 AN33, 2008 AM33, 2008 AK33, 2008 AH4, 2008 AH33
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-B01 -- 2008 AG1, 2008 AF4
682Kanab Obs. in Utah, 2 in MPECs 2008-B04 & 2008-B06 -- 2008 AL33, 2008 AJ33
704LINEAR in New Mexico, 10 in MPECs 2008-B01, 2008-B05 & 2008-B11 -- 2008 AP33, 2008 AK33, 2008 AE, 2005 TU45, 2003 BQ35, 2000 YV137, 96189, 138947, 5131, 3288
699LONEOS in Arizona, 2 in MPEC 2008-B01 -- 2005 TU45, 34613
J46Montana Blanca Obs. in the Canary Islands, 2 in MPEC 2008-B01 -- 68359, 1036
G96Mt. Lemmon Survey (MLS) in Arizona, 16 in MPECs 2008-B01, 2008-B02, 2008-B03, 2008-B04, 2008-B06, 2008-B07 & 2008-B08 -- 2008 AU26, 2008 AN33, 2008 AM33, 2008 AL33, 2008 AJ33, 2008 AH33, 2008 AG33, 2007 YK, 2007 YF1, 2007 OG3, 2006 KT1, 2005 TU45, 2004 BG121, 2003 AD1, 68063, 162038
A13Naef Obs. in Switzerland, 1 in MPEC 2008-B01 -- 2007 YV56
A24New Millennium Obs. in Italy, 1 in MPEC 2008-B01 -- 2007 VA188
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2008-B01 -- 2008 AF4, 2007 YB2, 2007 VQ4, 2007 VH3, 2007 SP6, 2005 XD1, 1993 TQ2, 90403, 68359, 136793
H066Andrew Lowe in Alberta via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-B01 -- 2008 AF3
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-B01 -- 2007 VR183
2492LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-B09 & 2008-B10 -- C/2007 W8, C/2007 W7, C/2007 W6, C/2007 W5, C/2007 V14, C/2007 V13, C/2007 V12, C/2007 V11
2493LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPECs 2008-B09 & 2008-B10 -- C/2007 W7, C/2007 W4, C/2007 V11
691Spacewatch 0.9m telescope in Arizona, 11 in MPEC 2008-B01 -- 2008 AV28, 2008 AU26, 2007 WY3, 2006 KT1, 2005 YY128, 2003 WL25, 2001 JU2, 25916, 13651, 7335, 4450
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2008-B01, 2008-B02, 2008-B04, 2008-B05 & 2008-B06 -- 2008 AU26, 2008 AL33, 2008 AK33, 2008 AJ33, 2008 AG33, 2007 YO56, 2006 VQ13
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-B05 -- 2008 AK33

Impact Risk Monitoring  on 16 January '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
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 AN33JPL Sentry22012042-2107211.0e-08-5.06-5.990JPL: "Analysis based on 21 observations spanning 1.0584 days (2008-Jan-15.4591 to 2008-Jan-16.51754)." Diameter approximately 0.570 km. from mean, weighted H=18.9.
2008 AL33JPL Sentry23542014-2100417.3e-08-5.59-6.210JPL: "Analysis based on 14 observations spanning 1.1304 days (2008-Jan-15.25594 to 2008-Jan-16.38632)." Diameter approximately 0.084 km. from mean, weighted H=23.0.
2008 AK33JPL Sentry22012010-21072406.9e-07-3.13-3.590JPL: "Analysis based on 18 observations spanning 1.1490 days (2008-Jan-15.08003 to 2008-Jan-16.22905)." Diameter approximately 0.269 km. from mean, weighted H=20.5.
2008 AG33JPL Sentry20382018-2107663.6e-07-3.68-4.990JPL: "Analysis based on 18 observations spanning 4.0236 days (2008-Jan-12.50891 to 2008-Jan-16.53246)." Diameter approximately 0.500 km. from mean, weighted H=19.2.
2008 AF4JPL Sentry17552078-2108482.5e-05-2.22-2.371JPL: "Analysis based on 74 observations spanning 4.9511 days (2008-Jan-10.39652 to 2008-Jan-15.34764)." Diameter approximately 0.413 km. from mean, weighted H=19.6.
NEODyS15182083-2090141.84e-05-2.34-2.361NEODyS: "Based on 75 optical observations (of which 1 are rejected as outliers) from 2008/01/10.397 to 2008/01/15.348. NOTE: The Virtual Impactor in 2089/01/09.478 in the table above is rated as Torino Scale 1."

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 16 January '08

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

2354Noted that JPL Sentry has posted 2008 AL33 as an impact risk - see above
2201Noted that JPL Sentry has posted 2008 AK33 as an impact risk - see above
Noted that JPL Sentry has posted 2008 AN33 as an impact risk - see above
2038Noted that JPL Sentry has posted 2008 AG33 as an impact risk - see above
Grabbed MPEC 2008-B09 - Comets C/2007 V11, 2007 V12, 2007 V13, 2007 V14 (SOHO) - see above
Grabbed MPEC 2008-B10 - Comets C/2007 W4, 2007 W5, 2007 W6, 2007 W7, 2007 W8 (SOHO) - see above
Grabbed MPEC 2008-B11 - 2008 AP33 - see above
1755Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Grabbed MPEC 2008-B02 - 2008 AG33 - see above
Grabbed MPEC 2008-B03 - 2008 AH33 - see above
Grabbed MPEC 2008-B04 - 2008 AJ33 - see above
Grabbed MPEC 2008-B05 - 2008 AK33 - see above
Grabbed MPEC 2008-B06 - 2008 AL33 - see above
Grabbed MPEC 2008-B07 - 2008 AM33 - see above
Grabbed MPEC 2008-B08 - 2008 AN33 - see above
1518Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Grabbed MPEC 2008-B01 - Daily Orbit Update - see above