Contents  on 4 August '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 4 August '08

The MPC's NEO Confirmation Page has 4 listings: 4 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of twelve 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 4 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been fourteen MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-P23 - "23:01 UT" - Observations of Comets


MPEC 2008-P22 - "22:51 UT" - 2004 SB56


MPEC 2008-P21 - "22:43 UT" - Comet C/2008 O2 (McNaught)


MPEC 2008-P20 - "22:16 UT" - Comet C/2008 N1 (Holmes)


MPEC 2008-P19 - "22:11 UT" - Comet P/2008 L2 (Hill)


MPEC 2008-P18 - "22:07 UT" - Comet C/2007 K3 (Siding Spring)


MPEC 2008-P17 - "20:35 UT" - 2008 LW8


MPEC 2008-P16 - "15:59 UT" - 2008 PG2


MPEC 2008-P15 - "15:57 UT" - 2008 PF2


MPEC 2008-P14 - "11:54 UT" - 2008 PG1


MPEC 2008-P13 - "11:51 UT" - 2008 PF1


MPEC 2008-P12 - "11:49 UT" - 2008 PE1


MPEC 2008-P11 - "11:46 UT" - 2008 ON13


<< DOU on 4 Aug. '08 >>  MPEC 2008-P10 - "06:09 UT" - Daily Orbit Update

Observers  on 4 August '08

A total of 77 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPECs 2008-P19, 2008-P21 & 2008-P23 -- C/2008 O2, P/2008 L2, C/2008 J6, C/2008 J1, C/2007 W1, C/2006 OF2, 67P, 61P, 51P, 47P, 6P
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-P23 -- C/2008 J1
B37Ametlla del Valles Obs. in Spain, 12 in MPECs 2008-P10, 2008-P19 & 2008-P23 -- P/2008 L2, C/2007 N3, C/2006 S3, C/2005 L3, 2001 TA45, 90403, 65690, 164400, 8567, 200P, 68P, 6P
H55Astronomical Research Obs. (ARO) in Illinois, 13 in MPECs 2008-P10, 2008-P11, 2008-P12 & 2008-P21 -- 2008 PE1, 2008 OY2, 2008 OX2, 2008 OV2, 2008 OS7, 2008 ON8, 2008 ON13, 2008 OC9, 2008 OB9, C/2008 O2, 2008 NX, 2008 HS3, 2008 HE66
J51Atlante Obs. in the Canary Islands, 10 in MPECs 2008-P10 & 2008-P23 -- C/2008 J6, C/2007 W1, C/2006 W3, C/2006 OF2, 11398, 8567, 4179, 67P, 47P, 6P
A81Balzaretto Obs. in Italy, 2 in MPECs 2008-P10 & 2008-P23 -- 35107, 6P
170Begues Obs. in Spain, 2 in MPEC 2008-P23 -- C/2007 N3, 6P
I32Beta Orionis Obs. in Argentina, 5 in MPEC 2008-P23 -- C/2008 A1, C/2007 N3, C/2007 G1, C/2007 B2, 6P
432Boambee Obs. in New South Wales, 4 in MPEC 2008-P10 -- 1994 AW1, 102873, 3691, 1980
215Buchloe Obs. in Germany, 13 in MPECs 2008-P21 & 2008-P23 -- C/2008 O2, C/2008 FK75, C/2007 W1, C/2007 N3, C/2007 M1, C/2006 OF2, C/2005 L3, C/2002 VQ94, 199P, 67P, 61P, 7P, 6P
235CAST Obs. in Italy, 7 in MPEC 2008-P23 -- C/2008 J6, C/2008 J1, C/2007 N3, C/2005 S4, C/2005 L3, 68P, 6P
J79Calarreona Obs. in Spain, 3 in MPEC 2008-P23 -- C/2007 N3, C/2005 L3, 6P
B20Carmelita Obs. in Spain, 6 in MPEC 2008-P23 -- C/2008 J1, C/2007 W1, C/2007 N3, C/2006 OF2, C/2005 L3, 6P
A77Chante-Perdrix Obs. in France, 2 in MPEC 2008-P23 -- C/2005 S4, 6P
J27El Guijo Obs. in Spain, 3 in MPECs 2008-P10 & 2008-P19 -- P/2008 L2, 90403, 65690
151Eschenberg Obs. in Switzerland, 9 in MPECs 2008-P10, 2008-P12 & 2008-P13 -- 2008 PF1, 2008 PE1, 2008 OX1, 2008 OS7, 2008 OO, 2005 RC34, 2004 NL8, 90403, 8567
762Four Winds Obs. in Michigan, 2 in MPEC 2008-P23 -- C/2007 N3, 6P
372Geisei Obs. in Japan, 8 in MPECs 2008-P19, 2008-P20, 2008-P21 & 2008-P23 -- C/2008 O2, C/2008 N1, P/2008 L2, C/2008 J5, C/2008 FK75, C/2007 M1, C/2006 S3, 6P
E94Gisborne Obs., 2 in MPEC 2008-P23 -- C/2008 A1, C/2007 Q3
J95Great Shefford Obs. in England, 6 in MPECs 2008-P11, 2008-P12, 2008-P13, 2008-P14, 2008-P21 & 2008-P22 -- 2008 PG1, 2008 PF1, 2008 PE1, 2008 ON13, C/2008 O2, 2004 SB56
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2008-P23 -- 67P
458Guadarrama Obs. in Spain, 1 in MPEC 2008-P23 -- 6P
379Hamamatsu-Yuto Obs. in Japan, 4 in MPECs 2008-P10 & 2008-P23 -- 2008 OS9, C/2006 W3, C/2005 L3, 6P
750Hobbs Obs. in Wisconsin, 3 in MPEC 2008-P23 -- C/2008 J1, C/2007 N3, 6P
B19Iluro Obs. in Spain, 3 in MPEC 2008-P10 -- 2005 RC34, 164400, 8567
J39Ingenio Obs. in the Canary Islands, 2 in MPEC 2008-P23 -- C/2007 N3, 6P
415Kambah Obs. in the Australian Capital Territory, 2 in MPEC 2008-P23 -- P/2008 J3, C/2006 V1
682Kanab Obs. in Utah, 1 in MPEC 2008-P21 -- C/2008 O2
704LINEAR in New Mexico, 11 in MPECs 2008-P10, 2008-P12, 2008-P13, 2008-P14, 2008-P15 & 2008-P23 -- 2008 PG1, 2008 PF2, 2008 PF1, 2008 PE1, 66146, 9856, 1627, 887, 61P, 51P, 6P
J38La Vara Obs. in Spain, 3 in MPEC 2008-P23 -- C/2007 N3, C/2005 L3, 6P
B33Libbiano Obs. in Italy, 1 in MPEC 2008-P13 -- 2008 PF1
J59Linceo Obs. in Spain, 2 in MPEC 2008-P23 -- C/2007 N3, 6P
J40Malaga Obs. in Spain, 4 in MPEC 2008-P23 -- C/2008 J1, C/2007 W1, 199P, 6P
A02Masia Cal Maciarol Modul 8 (MCM8) in Spain, 2 in MPEC 2008-P23 -- 199P, 67P
232Masquefa Obs. in Spain, 4 in MPEC 2008-P23 -- C/2007 N3, C/2005 L3, 199P, 6P
A06Mataro Obs. in Spain, 3 in MPEC 2008-P23 -- C/2007 N3, C/2005 L3, 6P
932McCarthy Obs. in Connecticut, 1 in MPEC 2008-P13 -- 2008 PF1
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2008-P10 -- 2008 ON10, 2008 OC9, 136818
213Montcabre Obs. in Spain, 8 in MPECs 2008-P21 & 2008-P23 -- C/2008 O2, C/2008 J6, C/2007 N3, C/2006 OF2, C/2005 L3, 199P, 67P, 6P
945Monte Deva Obs. in Spain, 8 in MPEC 2008-P23 -- C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 47P, 6P
900Moriyama Obs. in Japan, 10 in MPEC 2008-P23 -- C/2008 J6, C/2008 J1, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 W3, C/2006 OF2, C/2005 L3, 47P, 6P
474Mt. John Obs. in New Zealand, 1 in MPEC 2008-P23 -- C/2007 Q3
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-P11 -- 2008 ON13
J93Mt. Tuffley Obs. in England, 7 in MPECs 2008-P10 & 2008-P23 -- C/2006 OF2, 35107, 11398, 8567, 4179, 1917, 6P
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2008-P17 -- 2008 LW8
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2008-P17 -- 2008 LW8
A13Naef Obs. in Switzerland, 2 in MPECs 2008-P10 & 2008-P23 -- 2008 OP8, C/2006 S3
D81Nagano Obs., 1 in MPEC 2008-P23 -- 6P
J47Nazaret Obs. in Spain, 13 in MPECs 2008-P18, 2008-P19, 2008-P21 & 2008-P23 -- C/2008 O2, P/2008 L2, C/2008 J6, C/2007 W1, C/2007 N3, C/2007 K3, C/2005 L3, 200P, 199P, 67P, 61P, 47P, 6P
423North Ryde Obs. in New South Wales, 5 in MPECs 2008-P21 & 2008-P23 -- C/2008 O2, P/2008 J3, C/2008 E3, C/2006 V1, 197P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPECs 2008-P10 & 2008-P23 -- 2008 OX1, 2008 OS9, 2008 MU1, C/2008 J1, C/2007 W1, C/2006 OF2, 2001 XW266, 2001 TA45, 90403, 174050, 164400, 6P
941Pla D'Arguines Obs. in Spain, 3 in MPECs 2008-P18, 2008-P20 & 2008-P23 -- C/2008 N1, C/2007 N3, C/2007 K3
J53Posadas Obs. in Spain, 7 in MPECs 2008-P10 & 2008-P23 -- 2008 OS9, C/2008 J1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 6P
I68Pousada dos Anoes Obs., 3 in MPEC 2008-P23 -- C/2008 E3, C/2007 N3, C/2007 G1
H06RAS Obs. Mayhill in New Mexico, 6 in MPEC 2008-P23 -- C/2007 W1, C/2007 N3, C/2006 OF2, 199P, 47P, 6P
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2008-P23 -- 67P
428Reedy Creek Obs. in Queensland, 1 in MPEC 2008-P23 -- C/2007 N3
473Remanzacco Obs. in Italy, 3 in MPECs 2008-P10, 2008-P13 & 2008-P23 -- 2008 PF1, 35107, 6P
939Rodeno Obs. in Spain, 8 in MPEC 2008-P23 -- C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 68P, 47P, 6P
104San Marcello Pistoiese Obs. in Italy, 2 in MPEC 2008-P23 -- C/2008 J6, C/2008 J5
233San Vito Obs. in Italy, 1 in MPEC 2008-P23 -- 6P
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-P12 -- 2008 PE1
B61Sant Cugat del Valles Obs. in Spain, 1 in MPEC 2008-P23 -- C/2005 L3
B38Santa Mama Obs. in Italy, 5 in MPEC 2008-P10 -- 2008 OS7, 90403, 65690, 189058, 174050
204Schiaparelli Obs. in Italy, 20 in MPECs 2008-P10, 2008-P12, 2008-P19, 2008-P20 & 2008-P23 -- 2008 PE1, 2008 OX1, 2008 OS9, 2008 OS7, 2008 ON10, C/2008 N1, P/2008 L2, C/2008 J6, C/2008 J1, C/2008 FK75, C/2007 W1, C/2006 W3, C/2006 S3, C/2005 S4, 65690, 4179, 199P, 67P, 47P, 7P
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2008-P10, 2008-P16 & 2008-P23 -- 2008 PG2, P/2008 J3, 7092, 124P
510Siegen Obs. in Germany, 3 in MPEC 2008-P23 -- C/2008 J1, C/2006 OF2, 6P
056Skalnate Pleso Obs. in Slovakia, 3 in MPEC 2008-P23 -- C/2008 J6, C/2008 J5, C/2008 J1
B40Skylive Obs. in Italy, 1 in MPEC 2008-P23 -- 51P
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2008-P10 -- 2006 VV2, 8567
H53Thompsonville Obs. in Illinois, 3 in MPEC 2008-P10 -- 2008 OS9, 137170, 11398
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-P10 -- 1996 TE9, 189008
B51Vallauris Obs. in France, 2 in MPECs 2008-P20 & 2008-P23 -- C/2008 N1, C/2008 J1
J70Vega del Thader Obs. in Spain, 1 in MPEC 2008-P23 -- 6P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2008-P23 -- C/2007 N3, 6P
B42Vitebsk Obs. in Belarus, 6 in MPECs 2008-P19 & 2008-P23 -- P/2008 L2, C/2008 J1, C/2006 W3, C/2005 L3, 200P, 6P
367Yatsuka Obs., 5 in MPECs 2008-P21 & 2008-P23 -- C/2008 O2, C/2008 J1, C/2007 N3, C/2005 L3, 6P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 PG1JPL Sentry15272013-2107971.1e-07-4.73-5.050JPL: "Analysis based on 9 observations spanning .69419 days (2008-Aug-03.38046 to 2008-Aug-04.07465)." Diameter approximately 0.209 km. from mean, weighted H=21.1.
2008 PF1JPL Sentry14542017-2101212.0e-08-6.05-6.770JPL: "Analysis based on 25 observations spanning .96493 days (2008-Aug-03.27394 to 2008-Aug-04.23887)." Diameter approximately 0.129 km. from mean, weighted H=22.1.
2008 ON13JPL Sentry14002022-2106138.6e-09-4.96-5.540JPL: "Analysis based on 15 observations spanning 3.7095 days (2008-Jul-31.39367 to 2008-Aug-04.10314)." Diameter approximately 0.382 km. from mean, weighted H=19.7.
2008 OB9JPL Sentry14002014-2106243.1e-07-2.20-2.540JPL: "Analysis based on 17 observations spanning 4.8483 days (2008-Jul-29.34054 to 2008-Aug-03.18885)." Diameter approximately 1.123 km. from mean, weighted H=17.4.
NEODyS14002019-2088182.53e-07-2.27-2.610NEODyS: "Based on 18 optical observations (of which 1 are rejected as outliers) from 2008/07/29.341 to 2008/08/03.213."
2008 OP8NEODyS1400R E M O V E D-
JPL Sentry1400R E M O V E DJPL: Risk listing removed at 0851 UTC.
2008 OOJPL Sentry14002092-210034.4e-07-3.87-4.130JPL: "Analysis based on 76 observations spanning 8.8095 days (2008-Jul-26.09211 to 2008-Aug-03.90157)." Diameter approximately 0.369 km. from mean, weighted H=19.8.
NEODyS1400207514.59e-11-7.75-7.750NEODyS: "Based on 76 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/08/03.902."

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 4 August '08

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

2329Grabbed MPEC 2008-P23 - Observations of Comets - see above
2258Grabbed MPEC 2008-P18 - Comet C/2007 K3 (Siding Spring) - see above
Grabbed MPEC 2008-P19 - Comet P/2008 L2 (Hill) - see above
Grabbed MPEC 2008-P20 - Comet C/2008 N1 (Holmes) - see above
Grabbed MPEC 2008-P21 - Comet C/2008 O2 (McNaught) - see above
Grabbed MPEC 2008-P22 - 2004 SB56 - see above
2128Grabbed MPEC 2008-P17 - 2008 LW8 - see above
1603Grabbed MPEC 2008-P16 - 2008 PG2 - see above
1602Grabbed MPEC 2008-P15 - 2008 PF2 - see above
1527Noted that JPL Sentry has posted 2008 PG1 as an impact risk - see above
1454Noted that JPL Sentry has posted 2008 PF1 as an impact risk - see above
1400Noted that JPL Sentry has updated its 2008 OB9 risk assessment - see above
Noted that NEODyS has updated its 2008 OB9 risk assessment - see above
Noted that JPL Sentry has posted 2008 ON13 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that NEODyS has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has removed 2008 OP8 as an impact risk - see above
Noted that NEODyS has removed 2008 OP8 as an impact risk - see above
Grabbed MPEC 2008-P10 - Daily Orbit Update - see above
Grabbed MPEC 2008-P11 - 2008 ON13 - see above
Grabbed MPEC 2008-P12 - 2008 PE1 - see above
Grabbed MPEC 2008-P13 - 2008 PF1 - see above
Grabbed MPEC 2008-P14 - 2008 PG1 - see above