Contents  on 8 December '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 8 December '08

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these were "one nighters." 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 8 December '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been eleven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-X69 - "17:38 UT" - 2007 VJ302


MPEC 2008-X68 - "17:17 UT" - 2007 RW10


MPEC 2008-X67 - "17:06 UT" - 2006 QR181


MPEC 2008-X66 - "16:03 UT" - Comet C/2008 X3 (LINEAR)


MPEC 2008-X65 - "15:57 UT" - Comet P/2008 X1 (Hill)


<< DOU on 8 Dec. '08 >>  MPEC 2008-X64 - "07:11 UT" - Daily Orbit Update


MPEC 2008-X63 - "00:39 UT" - 2008 XE3


MPEC 2008-X62 - "00:30 UT" - Observations of Comets


MPEC 2008-X61 - "00:13 UT" - Comet P/2008 T4 (Hill)


MPEC 2008-X60 - "00:09 UT" - Comet C/2008 T2 (Cardinal)


MPEC 2008-X59 - "00:02 UT" - Comet C/2008 S3 (Boattini)

Observers  on 8 December '08

A total of 67 observing facilities appear in today's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2008-X62 -- C/2007 Q3
349Ageo Obs. in Japan, 17 in MPECs 2008-X61, 2008-X62, 2008-X65 & 2008-X66 -- C/2008 X3, P/2008 X1, P/2008 U1, P/2008 T4, C/2008 E1, C/2007 VO53, C/2006 Q1, P/2005 Y2, C/2005 L3, 195P, 144P, 139P, 67P, 51P, 33P, 22P, 15P
J24Altamira Obs. in Spain, 13 in MPECs 2008-X60 & 2008-X62 -- C/2008 T2, P/2008 QP20, P/2008 Q2, C/2008 A1, C/2007 U1, C/2006 W3, C/2006 OF2, 144P, 116P, 74P, 29P, 19P, 15P
B37Ametlla del Valles Obs. in Spain, 5 in MPECs 2008-X59, 2008-X62 & 2008-X64 -- C/2008 S3, C/2007 VO53, C/2006 K1, 2005 WS55, 1996 TE9
J20Aravaca Obs., 1 in MPEC 2008-X62 -- C/2006 W3
H55Astronomical Research Obs. (ARO) in Illinois, 9 in MPECs 2008-X64 & 2008-X65 -- 2008 XX2, 2008 XW2, 2008 XV2, 2008 XP2, 2008 XO2, 2008 XM1, 2008 XC1, P/2008 X1, 2008 WK96
467Auckland Obs. in New Zealand, 1 in MPEC 2008-X62 -- C/2007 Q3
215Buchloe Obs. in Germany, 3 in MPEC 2008-X62 -- P/2008 O2, 193P, 94P
493Calar Alto Obs. in Spain, 2 in MPEC 2008-X64 -- 2008 XE3, 2008 XC2
703Catalina Sky Survey (CSS) in Arizona, 16 in MPECs 2008-X62, 2008-X63 & 2008-X64 -- 2008 XE3, P/2008 QP20, 2006 VB14, 2006 UC63, 2005 YS165, 2005 WS55, 2005 BC, 85774, 185851, 152931, 137924, 3103, 2368, 2212, 61P, 33P
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-X69 -- 2007 VJ302
A77Chante-Perdrix Obs. in France, 16 in MPECs 2008-X59, 2008-X60, 2008-X62, 2008-X65 & 2008-X66 -- C/2008 X3, P/2008 X1, C/2008 T2, C/2008 S3, C/2008 J1, C/2008 A1, C/2006 W3, C/2006 OF2, 204P, 144P, 117P, 81P, 61P, 59P, 29P, 6P
J18Churchstoke Obs., 1 in MPEC 2008-X62 -- 61P
448Desert Moon Obs. in New Mexico, 7 in MPEC 2008-X64 -- 2008 WZ94, 2008 WQ63, 2008 UZ94, 2008 SO1, 2008 MB5, 68350, 189973
E85Farm Cove Obs. in New Zealand, 3 in MPECs 2008-X61 & 2008-X62 -- P/2008 T4, C/2008 P1, P/2008 L2
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-X64 -- 2008 XE3
372Geisei Obs. in Japan, 11 in MPEC 2008-X62 -- C/2008 J6, C/2008 J1, C/2008 A1, C/2007 VO53, P/2007 R1, C/2006 OF2, 205P, 144P, 33P, 29P, 6P
J95Great Shefford Obs. in England, 2 in MPECs 2008-X63 & 2008-X64 -- 2008 XE3, 2008 XB1
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2008-X64 -- 2008 UE7
442Gualba Obs. in Spain, 1 in MPEC 2008-X62 -- 29P
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2008-X62 -- P/2008 Q2, C/2007 U1, C/2006 W3, C/2006 OF2
D88Hiratsuka Obs., 6 in MPEC 2008-X62 -- P/2008 Q2, C/2006 Q1, C/2005 L3, 144P, 61P, 51P
B19Iluro Obs. in Spain, 5 in MPECs 2008-X62 & 2008-X64 -- 2008 UE7, 2006 VB14, 4179, 1864, 29P
415Kambah Obs. in the Australian Capital Territory, 2 in MPEC 2008-X62 -- C/2008 Q3, C/2007 Q3
B02Kielce Obs. in Poland, 1 in MPEC 2008-X62 -- C/2006 W3
585Kiev Comet Station in the Ukraine, 4 in MPECs 2008-X59, 2008-X60, 2008-X62 & 2008-X65 -- P/2008 X1, C/2008 T2, C/2008 S3, 61P
695Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPECs 2008-X67, 2008-X68 & 2008-X69 -- 2007 VJ302, 2007 RW10, 2006 QR181
704LINEAR in New Mexico, 31 in MPECs 2008-X62, 2008-X63, 2008-X64 & 2008-X65 -- 2008 XM1, 2008 XE3, 2008 XA2, P/2008 X1, 2008 WH60, 2008 WB59, 2008 VN, 2008 SP7, P/2008 QP20, P/2008 Q2, P/2008 L2, C/2007 U1, 2005 TZ51, 2003 YO1, 2002 VY94, 162900, 162004, 138852, 136923, 3200, 1620, 204P, 202P, 144P, 117P, 116P, 81P, 59P, 51P, 44P, 19P
212La Dehesilla Obs., 11 in MPEC 2008-X62 -- P/2008 QP20, P/2008 Q2, C/2008 J1, C/2006 OF2, 202P, 116P, 59P, 51P, 44P, 29P, 6P
J75La Sagra Obs. in Spain, 1 in MPEC 2008-X62 -- 202P
304Las Campanas Obs. in Chile, 1 in MPEC 2008-X67 -- 2006 QR181
130Lumezzane Obs. in Italy, 3 in MPEC 2008-X62 -- 204P, 202P, 144P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2008-X63 & 2008-X64 -- 2008 XP2, 2008 XE3, 2008 XC1, 2008 UW99
J40Malaga Obs. in Spain, 9 in MPEC 2008-X62 -- P/2008 QP20, P/2008 Q2, C/2008 J1, C/2006 W3, C/2006 OF2, 144P, 74P, 59P, 29P
A06Mataro Obs. in Spain, 3 in MPEC 2008-X62 -- P/2008 QP20, P/2008 Q2, 144P
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-X62 -- 67P
213Montcabre Obs. in Spain, 13 in MPECs 2008-X62 & 2008-X65 -- P/2008 X1, P/2008 QP20, P/2008 L2, C/2006 W3, C/2006 OF2, 144P, 67P, 61P, 59P, 51P, 47P, 29P, 19P
900Moriyama Obs. in Japan, 27 in MPECs 2008-X60, 2008-X61, 2008-X62 & 2008-X65 -- P/2008 X1, P/2008 T4, C/2008 T2, C/2008 R3, P/2008 QP20, P/2008 Q2, C/2008 P1, P/2008 L2, P/2008 J3, C/2008 J1, C/2008 A1, C/2007 VO53, C/2007 U1, P/2007 R1, C/2006 W3, C/2006 OF2, C/2006 K1, 202P, 195P, 144P, 81P, 61P, 59P, 51P, 44P, 29P, 15P
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2008-X62, 2008-X63 & 2008-X64 -- 2008 XE3, P/2008 U1, P/2008 L2, C/2007 U1, P/2005 Y2, 2002 XP90, 2368, 200P, 117P, 94P, 81P, 74P
D81Nagano Obs., 3 in MPEC 2008-X62 -- C/2006 Q1, 116P, 51P
J47Nazaret Obs. in Spain, 6 in MPEC 2008-X62 -- P/2008 Q2, C/2006 W3, 144P, 117P, 67P, 51P
A24New Millennium Obs. in Italy, 10 in MPEC 2008-X64 -- 89355, 53430, 36236, 162900, 162679, 153306, 4183, 3200, 1916, 1620
423North Ryde Obs. in New South Wales, 3 in MPEC 2008-X62 -- C/2008 P1, P/2008 J3, C/2007 Q3
B49Paus Obs. in Spain, 5 in MPECs 2008-X61 & 2008-X62 -- P/2008 T4, 144P, 139P, 117P, 59P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPECs 2008-X60 & 2008-X62 -- C/2008 T2, P/2008 Q2, C/2008 J1, C/2006 OF2, 144P, 59P, 51P, 29P
H06RAS Obs. Mayhill in New Mexico, 4 in MPECs 2008-X62 & 2008-X66 -- C/2008 X3, C/2006 OF2, 144P, 74P
D90RAS Obs. Moorook in South Australia, 2 in MPEC 2008-X62 -- C/2008 Q3, C/2008 P1
473Remanzacco Obs. in Italy, 3 in MPECs 2008-X63 & 2008-X64 -- 2008 XE3, 2008 XB1, 2008 UE7
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-X63 -- 2008 XE3
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2008-X65 -- P/2008 X1
233San Vito Obs. in Italy, 5 in MPECs 2008-X62 & 2008-X64 -- P/2008 QP20, P/2008 Q2, 85236, 144P, 59P
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-X62 -- C/2008 E1
B74Santa Maria de Montmagastrell Obs. in Spain, 5 in MPEC 2008-X62 -- 67P, 51P, 44P, 29P, 19P
204Schiaparelli Obs. in Italy, 6 in MPECs 2008-X59 & 2008-X62 -- C/2008 S3, P/2008 QP20, P/2005 Y2, 203P, 193P, 94P
E12Siding Spring Survey (SSS) in New South Wales, 13 in MPECs 2008-X62 & 2008-X64 -- C/2008 Q3, C/2008 P1, P/2008 O2, 2008 LW16, P/2008 J3, C/2007 Q3, 2006 US216, 2004 XY60, 2002 AU4, 2001 VK5, 67P, 47P, 6P
B40Skylive Obs. in Italy, 1 in MPEC 2008-X62 -- 51P
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2008-X62 & 2008-X64 -- 2004 XK3, 137925, 7335, 202P, 139P, 44P
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2008-X62 & 2008-X64 -- 2006 WQ1, 2004 FZ1, 2000 QK130, 108519, 81P
A71Stixendorf Obs. in Austria, 5 in MPEC 2008-X62 -- 202P, 144P, 61P, 59P, 6P
629Szeged Obs. in Hungary, 3 in MPEC 2008-X62 -- C/2008 R3, C/2008 A1, C/2006 W3
B18Terskol Obs. in Russia, 1 in MPEC 2008-X63 -- 2008 XE3
H10Tzec Maun Obs. Mayhill in New Mexico, 6 in MPEC 2008-X62 -- C/2006 W3, 205P, 144P, 81P, 61P, 51P
D25Tzec Maun Obs. Pingelly in Western Australia, 2 in MPEC 2008-X62 -- C/2007 Q3, 144P
B51Vallauris Obs. in France, 1 in MPEC 2008-X62 -- C/2006 OF2
H47Vicksburg Obs. in Mississippi, 5 in MPEC 2008-X62 -- C/2007 U1, 205P, 144P, 67P, 61P
C42Xingming Obs. in China, 2 in MPEC 2008-X62 -- C/2006 W3, 19P
367Yatsuka Obs., 5 in MPEC 2008-X62 -- P/2008 Q2, 144P, 61P, 59P, 51P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 December '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 XU2NEODyS1349203913.96e-08-7.47-7.470NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2008/12/06.262 to 2008/12/07.417."
2008 XO2NEODyS13492027-206451.12e-08-4.67-5.070NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/05.195 to 2008/12/07.214."
JPL Sentry13482064-207733.0e-09-5.39-5.430JPL: "Analysis based on 26 observations spanning 2.0194 days (2008-Dec-05.19431 to 2008-Dec-07.21369)." Diameter approximately 0.790 km. from mean, weighted H=18.2.
2008 XC1NEODyS13492085-208823.23e-06-4.99-5.240NEODyS: "Based on 58 optical observations (of which 0 are rejected as outliers) from 2008/12/03.369 to 2008/12/07.295."
JPL Sentry13482085-208823.3e-06-4.98-5.230JPL: "Analysis based on 58 observations spanning 3.9266 days (2008-Dec-03.36799 to 2008-Dec-07.29461)." Diameter approximately 0.066 km. from mean, weighted H=23.6.
2008 WK96NEODyS13492024-203126.06e-05-2.76-2.760NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/11/30.388 to 2008/12/07.275."
JPL Sentry13482024-203126.3e-05-2.75-2.750JPL: "Analysis based on 31 observations spanning 6.8869 days (2008-Nov-30.38762 to 2008-Dec-07.27451)." Diameter approximately 0.085 km. from mean, weighted H=23.0.
2008 UW99JPL Sentry1348R E M O V E DJPL: Risk listing removed at 0950 UTC.

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 8 December '08

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

1759Grabbed MPEC 2008-X67 - 2006 QR181 - see above
Grabbed MPEC 2008-X68 - 2007 RW10 - see above
Grabbed MPEC 2008-X69 - 2007 VJ302 - see above
1700Grabbed MPEC 2008-X65 - Comet P/2008 X1 (Hill) - see above
Grabbed MPEC 2008-X66 - Comet C/2008 X3 (LINEAR) - see above
1349Noted that NEODyS has updated its 2008 WK96 risk assessment - see above
Noted that NEODyS has updated its 2008 XC1 risk assessment - see above
Noted that NEODyS has updated its 2008 XO2 risk assessment - see above
1348Noted that JPL Sentry has removed 2008 UW99 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WK96 risk assessment - see above
Noted that JPL Sentry has updated its 2008 XC1 risk assessment - see above
Noted that JPL Sentry has updated its 2008 XO2 risk assessment - see above
Noted that NEODyS has posted 2008 XU2 as an impact risk - see above
Grabbed MPEC 2008-X64 - Daily Orbit Update - see above
0058Grabbed MPEC 2008-X62 - Observations of Comets - see above
Grabbed MPEC 2008-X63 - 2008 XE3 - see above
0027Grabbed MPEC 2008-X59 - Comet C/2008 S3 (Boattini) - see above
Grabbed MPEC 2008-X60 - Comet C/2008 T2 (Cardinal) - see above
Grabbed MPEC 2008-X61 - Comet P/2008 T4 (Hill) - see above