Contents  on 30 October '07

Resources:

The latest news: framed access (best), RSS news feed RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 30 October '07

The MPC's NEO Confirmation Page has 4 listings: 1 new, 3 updated

When last checked at 2242 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and three updated listings. Of these, three 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 30 October '07

Minor Planet Electronic Circulars

As of last check at 2356 UTC, there have been nine MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-U94 - "20:55 UT" - 2007 US12


MPEC 2007-U93 - "15:59 UT" - Observations of Comets


MPEC 2007-U92 - "15:46 UT" - Comet C/2007 U1 (LINEAR)


MPEC 2007-U91 - "15:37 UT" - Comet P/2007 T6 (Catalina)


MPEC 2007-U90 - "15:31 UT" - Comet C/2007 T5 (Gibbs)


MPEC 2007-U89 - "15:26 UT" - Comet C/2007 T1 (McNaught)


MPEC 2007-U88 - "15:18 UT" - Comet C/2007 S2 (Lemmon)


MPEC 2007-U87 - "15:09 UT" - Comet P/2007 R2 (Gibbs)


<< DOU on 30 Oct. '07 >>  MPEC 2007-U86 - "06:08 UT" - Daily Orbit Update

Observers  on 30 October '07

A total of 58 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 8 in MPECs 2007-U89, 2007-U92 & 2007-U93 -- C/2007 U1, C/2007 T1, P/2007 H1, C/2006 OF2, C/2006 M1, 108P, 29P, 17P
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2007-U86 & 2007-U92 -- 2007 UN12, 2007 UM12, 2007 UL12, C/2007 U1
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2007-U93 -- 50P, 17P
E00Castlemaine Obs., 1 in MPEC 2007-U89 -- C/2007 T1
703Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2007-U86, 2007-U93 & 2007-U94 -- 2007 US6, 2007 US12, 108P, 65P
A77Chante-Perdrix Obs. in France, 1 in MPEC 2007-U93 -- 17P
A10Corbera Obs. in Spain, 1 in MPEC 2007-U93 -- 17P
734Farpoint Obs. in Kansas, 3 in MPECs 2007-U90, 2007-U91 & 2007-U93 -- P/2007 T6, C/2007 T5, 17P
762Four Winds Obs. in Michigan, 1 in MPEC 2007-U93 -- 17P
372Geisei Obs. in Japan, 1 in MPEC 2007-U89 -- C/2007 T1
143Gnosca Obs. in Switzerland, 1 in MPEC 2007-U93 -- P/2007 C2
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2007-U86 -- 2007 TH72
J95Great Shefford Obs. in England, 4 in MPECs 2007-U86, 2007-U93 & 2007-U94 -- 2007 US12, 2007 UN12, 2007 UL12, 17P
H51Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-U86 -- 2007 US6, 2007 UP6
442Gualba Obs. in Spain, 1 in MPEC 2007-U93 -- 29P
D88Hiratsuka Obs., 4 in MPECs 2007-U89 & 2007-U93 -- C/2007 T1, C/2006 OF2, 46P, 17P
J39Ingenio Obs., 2 in MPEC 2007-U93 -- C/2006 OF2, 17P
415Kambah Obs. in Australia, 4 in MPEC 2007-U93 -- P/2007 H1, C/2006 U6, C/2005 EL173, 46P
682Kanab Obs. in Utah, 1 in MPEC 2007-U86 -- 2007 UM12
B02Kielce Obs. in Poland, 1 in MPEC 2007-U93 -- 17P
585Kiev Comet Station in the Ukraine, 5 in MPECs 2007-U87, 2007-U88, 2007-U90, 2007-U91 & 2007-U93 -- P/2007 T6, C/2007 T5, C/2007 S2, P/2007 R2, P/2007 H1
704LINEAR in New Mexico, 10 in MPECs 2007-U88, 2007-U91, 2007-U92 & 2007-U93 -- C/2007 U1, P/2007 T6, C/2007 S2, C/2007 E1, P/2007 C2, C/2006 S5, C/2006 M1, 108P, 93P, 65P
J64La Mata Obs. in Spain, 5 in MPEC 2007-U93 -- P/2007 H1, C/2006 OF2, 93P, 50P, 17P
J76La Murta Obs. in Spain, 3 in MPEC 2007-U93 -- 93P, 50P, 17P
J67La Puebla de Vallbona Obs. in Spain, 1 in MPEC 2007-U93 -- 17P
A80Lindenberg Obs. in Germany, 1 in MPEC 2007-U93 -- 17P
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2007-U92 -- C/2007 U1
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2007-U86 -- 2007 UC2, 2007 TG15, 2007 LR32
J40Malaga Obs. in Spain, 1 in MPEC 2007-U93 -- 17P
232Masquefa Obs. in Spain, 7 in MPEC 2007-U93 -- P/2007 H1, C/2006 S5, C/2006 OF2, 93P, 50P, 29P, 17P
A06Mataro Obs. in Spain, 2 in MPEC 2007-U93 -- 93P, 17P
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-U93 -- C/2007 G1
J45Montana Cabreja Obs. in the Canary Islands, 3 in MPEC 2007-U93 -- P/2007 H1, C/2006 OF2, 46P
213Montcabre Obs. in Spain, 6 in MPECs 2007-U92 & 2007-U93 -- C/2007 U1, C/2006 OF2, 93P, 50P, 29P, 17P
945Monte Deva Obs. in Spain, 3 in MPEC 2007-U93 -- P/2007 H1, C/2006 OF2, 17P
B06Montseny Obs., 1 in MPEC 2007-U93 -- 17P
900Moriyama Obs. in Japan, 5 in MPEC 2007-U93 -- P/2007 H1, C/2006 OF2, C/2006 M1, 93P, 50P
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2007-U87, 2007-U88, 2007-U90 & 2007-U91 -- P/2007 T6, C/2007 T5, C/2007 S2, P/2007 R2
J78Murcia Obs. in Spain, 4 in MPEC 2007-U93 -- P/2007 H1, 93P, 50P, 17P
J47Nazaret Obs. in Spain, 4 in MPEC 2007-U93 -- C/2007 G1, 93P, 50P, 17P
423North Ryde Obs. in New South Wales, 2 in MPEC 2007-U93 -- C/2006 U6, 46P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2007-U93 -- 17P
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2007-U92 & 2007-U93 -- C/2007 U1, 17P
H68Red Barn Obs. in Georgia, 1 in MPEC 2007-U93 -- C/2006 OF2
473Remanzacco Obs. in Italy, 1 in MPEC 2007-U93 -- 93P
939Rodeno Obs. in Spain, 5 in MPEC 2007-U93 -- P/2007 H1, C/2006 OF2, 93P, 50P, 17P
J49Santa Pola Obs. in Spain, 1 in MPEC 2007-U93 -- 50P
D21Shenton Park Obs. in Western Australia, 1 in MPEC 2007-U92 -- C/2007 U1
E12Siding Spring Survey in New South Wales, 1 in MPEC 2007-U93 -- C/2005 EL173
510Siegen Obs. in Germany, 2 in MPEC 2007-U93 -- 93P, 17P
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-U86 -- 2007 PA8
673Table Mtn. Obs. in southern California, 1 in MPEC 2007-U93 -- 17P
926Tenagra II Obs. in Arizona, 3 in MPEC 2007-U86 -- 2007 US6, 2007 UG6, 2007 UA2
D70Tosa Obs., 1 in MPEC 2007-U93 -- 17P
B39Tradate Obs. in Italy, 1 in MPEC 2007-U93 -- 17P
A82Trieste Obs., 3 in MPECs 2007-U86 & 2007-U93 -- 2007 PU11, 2002 RC118, 50P
J70Vega del Thader Obs. in Spain, 2 in MPEC 2007-U93 -- 93P, 50P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2007-U93 -- C/2006 OF2, 93P

Impact Risk Monitoring  on 30 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2356 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 now 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
2007 UN12NEODyS14092069-2090266.88e-05-6.38-7.140NEODyS: "Based on 63 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/10/29.979."
JPL Sentry11262071-2107262.0e-04-5.99-6.890JPL: "Analysis based on 63 observations spanning 8.6057 days (2007-Oct-21.37247 to 2007-Oct-29.9782)." Diameter approximately 0.006 km. from mean, weighted H=28.7.
2007 UL12JPL Sentry1126209426.0e-09-5.85-5.860JPL: "Analysis based on 28 observations spanning 4.6554 days (2007-Oct-25.47694 to 2007-Oct-30.13237)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
2007 TH72NEODyS1409208714.19e-09-8.08-8.080NEODyS: "Based on 37 optical observations (of which 1 are rejected as outliers) from 2007/10/12.211 to 2007/10/28.219."

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 30 October '07

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

2124Grabbed MPEC 2007-U94 - 2007 US12 - see above
1759Grabbed MPEC 2007-U87 - Comet P/2007 R2 (Gibbs) - see above
Grabbed MPEC 2007-U88 - Comet C/2007 S2 (Lemmon) - see above
Grabbed MPEC 2007-U89 - Comet C/2007 T1 (McNaught) - see above
Grabbed MPEC 2007-U90 - Comet C/2007 T5 (Gibbs) - see above
Grabbed MPEC 2007-U91 - Comet P/2007 T6 (Catalina) - see above
Grabbed MPEC 2007-U92 - Comet C/2007 U1 (LINEAR) - see above
Grabbed MPEC 2007-U93 - Observations of Comets - see above
1409Noted that NEODyS has updated its 2007 TH72 risk assessment - see above
Noted that NEODyS has posted 2007 UN12 as an impact risk - see above
1126Noted that JPL Sentry has updated its 2007 UL12 risk assessment - see above
Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above
Grabbed MPEC 2007-U86 - Daily Orbit Update - see above
The NEOCP has become active
0234The NEOCP has become empty