Contents  on 1 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 1 December '08

The MPC's NEO Confirmation Page has 8 listings: 3 new, 5 updated

When last checked at 2316 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and five updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 21 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 1 December '08

Minor Planet Electronic Circulars

As of last check at 2316 UTC, there have been sixteen MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-X16 - "17:14 UT" - 2008 XB


MPEC 2008-X15 - "17:11 UT" - 2008 WK96


MPEC 2008-X14 - "17:04 UT" - 2008 WJ96


MPEC 2008-X13 - "16:59 UT" - 2008 WH96


MPEC 2008-X12 - "16:53 UT" - 2008 WG96


MPEC 2008-X11 - "16:50 UT" - 2008 WF96


MPEC 2008-X10 - "16:47 UT" - 2008 WE96


<< DOU on 1 Dec. '08 >>  MPEC 2008-X09 - "07:10 UT" - Daily Orbit Update


MPEC 2008-X08 - "04:39 UT" - 2006 BB27


MPEC 2008-X07 - "01:16 UT" - 2008 WA95


MPEC 2008-X06 - "01:13 UT" - 2008 WZ94


MPEC 2008-X05 - "01:10 UT" - 2008 WY94


MPEC 2008-X04 - "00:59 UT" - Observations of Comets


MPEC 2008-X03 - "00:56 UT" - Comet P/2008 U1 (McMillan)


MPEC 2008-X02 - "00:53 UT" - Comet P/2008 T4 (Hill)


MPEC 2008-X01 - "00:49 UT" - Comet C/2008 T2 (Cardinal)

Observers  on 1 December '08

A total of 65 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPEC 2008-X04 -- P/2008 QP20, C/2008 A1, C/2006 OF2, P/2005 Y2, 207P, 202P, 188P, 179P, 81P, 74P, 6P
871Akou Obs., 1 in MPEC 2008-X04 -- 144P
J97Alginet Obs. in Spain, 5 in MPEC 2008-X04 -- C/2008 R3, C/2007 U1, C/2006 OF2, 205P, 200P
J24Altamira Obs. in Spain, 1 in MPEC 2008-X04 -- P/2008 S1
B37Ametlla del Valles Obs. in Spain, 4 in MPEC 2008-X04 -- 202P, 117P, 51P, 31P
J20Aravaca Obs., 2 in MPEC 2008-X04 -- C/2008 R3, 144P
H55Astronomical Research Obs. (ARO) in Illinois, 18 in MPECs 2008-X08 & 2008-X09 -- 2008 WY32, 2008 WY13, 2008 WX32, 2008 WQ63, 2008 WN, 2008 WM64, 2008 WM61, 2008 WM32, 2008 WL60, 2008 WH60, 2008 WB59, 2008 VU3, 2008 UU99, 2008 UE7, 2008 TQ2, 2008 MZ, 2006 BB27, 2004 XK3
E18BDI Obs. in New South Wales, 1 in MPEC 2008-X09 -- 2006 US216
A74Bergen-Enkheim Obs. in Germany, 3 in MPECs 2008-X06, 2008-X07 & 2008-X15 -- 2008 WZ94, 2008 WK96, 2008 WA95
B59Borken Obs. in Germany, 1 in MPEC 2008-X04 -- C/2006 OF2
127Bornheim Obs. in Germany, 1 in MPEC 2008-X04 -- C/2006 W3
215Buchloe Obs. in Germany, 8 in MPEC 2008-X04 -- P/2008 L2, C/2007 VO53, C/2006 OF2, P/2005 Y2, 145P, 81P, 31P, 6P
235CAST Obs. in Italy, 13 in MPECs 2008-X01 & 2008-X04 -- C/2008 T2, C/2008 R3, P/2008 QP20, P/2008 Q2, C/2008 J1, C/2006 W3, C/2006 OF2, 205P, 200P, 144P, 67P, 61P, 59P
J79Calarreona Obs. in Spain, 13 in MPECs 2008-X03 & 2008-X04 -- P/2008 U1, P/2008 Q2, C/2008 J1, C/2008 A1, C/2006 OF2, 205P, 144P, 67P, 61P, 51P, 47P, 44P, 29P
J96Cantabria Obs. in Spain, 3 in MPECs 2008-X01 & 2008-X04 -- C/2008 T2, C/2006 W3, C/2006 OF2
B20Carmelita Obs. in Spain, 4 in MPEC 2008-X04 -- C/2006 W3, C/2006 OF2, 205P, 144P
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2008-X09, 2008-X11, 2008-X12 & 2008-X15 -- 2008 WK96, 2008 WH60, 2008 WG96, 2008 WG14, 2008 WF96, 2008 VB1, 2008 SP7, 2006 VB14, 138852
A10Corbera Obs. in Spain, 1 in MPEC 2008-X04 -- C/2006 W3
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-X04 -- 74P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-X04 -- 202P
448Desert Moon Obs. in New Mexico, 3 in MPEC 2008-X09 -- 2008 WH60, 2008 VH14, 2008 UZ94
J27El Guijo Obs. in Spain, 1 in MPEC 2008-X04 -- C/2007 VO53
E85Farm Cove Obs. in New Zealand, 5 in MPECs 2008-X02, 2008-X03 & 2008-X04 -- P/2008 U1, P/2008 T4, P/2008 S1, P/2008 Q2, P/2008 L2
372Geisei Obs. in Japan, 6 in MPECs 2008-X02, 2008-X03 & 2008-X04 -- P/2008 U1, P/2008 T4, P/2008 L2, 205P, 144P, 6P
203GiaGa Obs. in Italy, 3 in MPEC 2008-X04 -- P/2008 QP20, P/2008 Q2, C/2007 U1
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-X09 -- 2008 SE
651Grasslands Obs. in Arizona, 3 in MPECs 2008-X11, 2008-X13 & 2008-X16 -- 2008 XB, 2008 WH96, 2008 WF96
442Gualba Obs. in Spain, 1 in MPEC 2008-X04 -- 29P
A17Guidestar Obs. in Germany, 1 in MPEC 2008-X04 -- C/2006 OF2
379Hamamatsu-Yuto Obs. in Japan, 8 in MPECs 2008-X04 & 2008-X09 -- 2008 VU4, 2008 VK14, 2008 UE7, 2008 SQ1, C/2006 W3, 2006 SZ217, C/2006 OF2, 2005 TZ51
D88Hiratsuka Obs., 4 in MPEC 2008-X04 -- P/2008 QP20, P/2008 L2, C/2007 U1, 59P
B15Inastars Obs. in Germany, 1 in MPEC 2008-X01 -- C/2008 T2
185Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2008-X04 -- P/2008 Q2
415Kambah Obs. in the Australian Capital Territory, 4 in MPEC 2008-X04 -- P/2008 Q2, C/2008 P1, 144P, 6P
682Kanab Obs. in Utah, 1 in MPEC 2008-X13 -- 2008 WH96
585Kiev Comet Station in the Ukraine, 2 in MPECs 2008-X03 & 2008-X04 -- P/2008 U1, C/2006 OF2
704LINEAR in New Mexico, 17 in MPECs 2008-X02, 2008-X04, 2008-X07, 2008-X09 & 2008-X13 -- 2008 WN2, 2008 WH96, 2008 WA95, 2008 UE7, P/2008 T4, 2008 SX245, 53430, 30825, 189552, 141765, 136849, 3352, 1943, 1865, 887, 179P, 145P
212La Dehesilla Obs., 2 in MPEC 2008-X04 -- C/2008 R3, C/2007 U1
J75La Sagra Obs. in Spain, 2 in MPEC 2008-X09 -- 2008 SE, 9856
J38La Vara Obs. in Spain, 7 in MPECs 2008-X01 & 2008-X04 -- C/2008 T2, P/2008 QP20, P/2008 Q2, C/2008 J1, C/2006 OF2, 144P, 29P
130Lumezzane Obs. in Italy, 1 in MPEC 2008-X04 -- C/2007 VO53
J40Malaga Obs. in Spain, 3 in MPEC 2008-X04 -- 61P, 51P, 29P
232Masquefa Obs. in Spain, 6 in MPEC 2008-X04 -- P/2008 Q2, C/2006 OF2, 144P, 67P, 51P, 44P
213Montcabre Obs. in Spain, 10 in MPECs 2008-X02 & 2008-X04 -- P/2008 T4, P/2008 QP20, P/2008 Q2, C/2006 OF2, 205P, 144P, 67P, 51P, 29P, 19P
900Moriyama Obs. in Japan, 2 in MPEC 2008-X04 -- P/2008 Q2, C/2008 A1
G96Mt. Lemmon Survey (MLS) in Arizona, 25 in MPECs 2008-X02, 2008-X04, 2008-X06, 2008-X09, 2008-X10, 2008-X11, 2008-X12, 2008-X14 & 2008-X16 -- 2008 XB, 2008 WZ94, 2008 WZ13, 2008 WY13, 2008 WX32, 2008 WW32, 2008 WT62, 2008 WQ63, 2008 WM64, 2008 WK32, 2008 WJ96, 2008 WG96, 2008 WF96, 2008 WE96, P/2008 T4, P/2008 Q2, 2008 HO3, 2005 RC, 2002 NW16, 2001 FX9, 1994 XG, 190208, 177651, 136849, 7335
J47Nazaret Obs. in Spain, 12 in MPEC 2008-X04 -- P/2008 L2, C/2008 A1, C/2006 K1, 205P, 202P, 144P, 117P, 67P, 61P, 51P, 47P, 29P
423North Ryde Obs. in New South Wales, 2 in MPEC 2008-X04 -- C/2008 P1, P/2008 J3
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPECs 2008-X04 & 2008-X09 -- 2008 VN, 2008 UE7, 2008 SE, P/2008 Q2, 2008 MZ, C/2006 W3, 2006 SZ217, C/2006 OF2, 2001 LM5, 188P, 144P, 59P, 51P, 44P
J53Posadas Obs. in Spain, 7 in MPEC 2008-X04 -- C/2008 R3, P/2008 L2, C/2008 J1, C/2007 U1, C/2006 W3, 205P, 200P
H06RAS Obs. Mayhill in New Mexico, 2 in MPEC 2008-X04 -- 116P, 19P
473Remanzacco Obs. in Italy, 3 in MPECs 2008-X02, 2008-X03 & 2008-X04 -- P/2008 U1, P/2008 T4, C/2006 W3
939Rodeno Obs. in Spain, 11 in MPEC 2008-X04 -- P/2008 Q2, P/2008 L2, C/2008 A1, C/2007 U1, C/2006 W3, C/2006 OF2, 205P, 144P, 59P, 51P, 29P
461SZTE Asteroid Program (SZTE) in Hungary, 3 in MPEC 2008-X04 -- C/2006 S3, C/2006 OF2, C/2006 K1
B70Sant Celoni Obs. in Spain, 5 in MPEC 2008-X04 -- P/2008 QP20, 144P, 74P, 61P, 29P
204Schiaparelli Obs. in Italy, 4 in MPEC 2008-X04 -- P/2005 Y2, 207P, 202P, 44P
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2008-X05 & 2008-X09 -- 2008 WY94, 2008 VF, 2008 HO3, 2008 EV5, 2007 VL243, 2001 XQ, 154715
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2008-X06 & 2008-X09 -- 2008 WZ94, 194386, 4486
291Spacewatch 1.8m telescope in Arizona, 16 in MPECs 2008-X06, 2008-X09, 2008-X10, 2008-X11, 2008-X13 & 2008-X14 -- 2008 WZ94, 2008 WY32, 2008 WS62, 2008 WJ96, 2008 WH96, 2008 WF96, 2008 WE96, 2008 VR4, 2008 VL14, 2007 AG, 2006 BQ6, 2004 BE68, 2003 XB22, 2003 RB, 2001 XQ, 2001 WT1
A97Stammersdorf Obs. in Austria, 2 in MPEC 2008-X04 -- C/2008 J1, C/2006 OF2
629Szeged Obs. in Hungary, 14 in MPEC 2008-X04 -- P/2008 QP20, P/2008 Q2, C/2007 U1, C/2006 S3, C/2006 OF2, 205P, 144P, 116P, 74P, 61P, 59P, 51P, 29P, 19P
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2008-X04 -- C/2006 OF2
J70Vega del Thader Obs. in Spain, 7 in MPEC 2008-X04 -- P/2008 Q2, 205P, 144P, 67P, 47P, 44P, 6P
648Winer Obs. in Arizona, 2 in MPECs 2008-X12 & 2008-X15 -- 2008 WK96, 2008 WG96
367Yatsuka Obs., 2 in MPEC 2008-X04 -- C/2006 OF2, 116P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 December '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2316 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 WK96JPL Sentry19102024-203242.5e-05-2.98-2.980JPL: "Analysis based on 13 observations spanning .96033 days (2008-Nov-30.38762 to 2008-Dec-01.34795)." Diameter approximately 0.100 km. from mean, weighted H=22.6.
2008 WJ96JPL Sentry19102035-209252.0e-09-8.75-9.080JPL: "Analysis based on 9 observations spanning .98861 days (2008-Nov-30.31071 to 2008-Dec-01.29932)." Diameter approximately 0.030 km. from mean, weighted H=25.3.
2008 WH96JPL Sentry22062013-21081633.0e-07-5.16-5.520JPL: "Analysis based on 11 observations spanning 1.0110 days (2008-Nov-30.27572 to 2008-Dec-01.2867)." Diameter approximately 0.082 km. from mean, weighted H=23.1.
2008 WY94NEODyS13492041-20841494.15e-04-3.76-4.240NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/11/29.541 to 2008/11/30.621."
JPL Sentry02582037-2054362.1e-04-3.99-4.200JPL: "Analysis based on 13 observations spanning 1.0796 days (2008-Nov-29.54021 to 2008-Nov-30.6198)." Diameter approximately 0.028 km. from mean, weighted H=25.5.
2008 WM64JPL Sentry1349R E M O V E DJPL: Risk listing removed at 1032 UTC.
NEODyS1349R E M O V E D-
2008 WZ13JPL Sentry13492023-2108531.6e-06-2.66-3.060JPL: "Analysis based on 44 observations spanning 9.9412 days (2008-Nov-20.27557 to 2008-Nov-30.21676)." Diameter approximately 0.598 km. from mean, weighted H=18.8.
NEODyS13492023-2090261.48e-06-2.67-3.120NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/11/20.276 to 2008/11/30.218."
2008 WY13JPL Sentry1349210312.5e-09-6.88-6.880JPL: "Analysis based on 36 observations spanning 9.9448 days (2008-Nov-20.27393 to 2008-Nov-30.21869)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
2008 VL14JPL Sentry1349R E M O V E DJPL: Risk listing removed at 0955 UTC.
NEODyS1349R E M O V E D-
2008 VV4JPL Sentry2206R E M O V E DJPL: Risk listing removed at 1831 UTC 12 Nov..

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 1 December '08

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

2206Noted that JPL Sentry has removed 2008 VV4 as an impact risk - see above
Noted that JPL Sentry has posted 2008 WH96 as an impact risk - see above
1910Noted that JPL Sentry has posted 2008 WJ96 as an impact risk - see above
Noted that JPL Sentry has posted 2008 WK96 as an impact risk - see above
1819Grabbed MPEC 2008-X15 - 2008 WK96 - see above
Grabbed MPEC 2008-X16 - 2008 XB - see above
1712Grabbed MPEC 2008-X10 - 2008 WE96 - see above
Grabbed MPEC 2008-X11 - 2008 WF96 - see above
Grabbed MPEC 2008-X12 - 2008 WG96 - see above
Grabbed MPEC 2008-X13 - 2008 WH96 - see above
Grabbed MPEC 2008-X14 - 2008 WJ96 - see above
1349Noted that JPL Sentry has removed 2008 VL14 as an impact risk - see above
Noted that NEODyS has removed 2008 VL14 as an impact risk - see above
Noted that JPL Sentry has removed 2008 WM64 as an impact risk - see above
Noted that NEODyS has removed 2008 WM64 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WY13 risk assessment - see above
Noted that NEODyS has posted 2008 WY94 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 WZ13 risk assessment - see above
Noted that NEODyS has updated its 2008 WZ13 risk assessment - see above
Grabbed MPEC 2008-X09 - Daily Orbit Update - see above
0507Grabbed MPEC 2008-X08 - 2006 BB27 - see above
0258Noted that JPL Sentry has posted 2008 WY94 as an impact risk - see above
0158Grabbed MPEC 2008-X04 - Observations of Comets - see above
Grabbed MPEC 2008-X05 - 2008 WY94 - see above
Grabbed MPEC 2008-X06 - 2008 WZ94 - see above
Grabbed MPEC 2008-X07 - 2008 WA95 - see above
0058Grabbed MPEC 2008-X01 - Comet C/2008 T2 (Cardinal) - see above
Grabbed MPEC 2008-X02 - Comet P/2008 T4 (Hill) - see above
Grabbed MPEC 2008-X03 - Comet P/2008 U1 (McMillan) - see above