2008-12-08 Tracking News

Contents on 8 December '08

IAU Minor Planet Center
- NEOCP Activity -- two listings: 1 new, 1 updated
- New MPECs -- eleven MPECs
Observers -- 67 observing facilities
Impact Risk Monitoring -- five objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
Old & new CRT Archive
Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access, 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-X59 time-stamped "00:02 UT" - Comet C/2008 S3 (Boattini) - see below
MPEC 2008-X60 time-stamped "00:09 UT" - Comet C/2008 T2 (Cardinal) - see below
MPEC 2008-X61 time-stamped "00:13 UT" - Comet P/2008 T4 (Hill) - see below
MPEC 2008-X62 time-stamped "00:30 UT" - Observations of Comets - see below
MPEC 2008-X63 time-stamped "00:39 UT" - 2008 XE3 - see below
MPEC 2008-X64 time-stamped "07:11 UT" - Daily Orbit Update - see below
MPEC 2008-X65 time-stamped "15:57 UT" - Comet P/2008 X1 (Hill) - see below
MPEC 2008-X66 time-stamped "16:03 UT" - Comet C/2008 X3 (LINEAR) - see below
MPEC 2008-X67 time-stamped "17:06 UT" - 2006 QR181 - see below
MPEC 2008-X68 time-stamped "17:17 UT" - 2007 RW10 - see below
MPEC 2008-X69 time-stamped "17:38 UT" - 2007 VJ302

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

K07VU2J 2007 VJ302 (KBO, q=40.248 AU, Q=46.239 AU, H=6.7 ~155 km) from Cerro Tololo Inter-American Obs. (CTIO) (2006 Sept. 25.20-24p2 at I=21.9-22.6) and Kitt Peak Natl. Obs. (KPNO) (Oct. 23.37p1 at r=22.1, 23.42p1 at r=22.0, 24.33p1 at r=22.0 & 24.43p1 at r=22.2)

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

K07R10W 2007 RW10 (i=36.1°, q=21.216 AU, Q=39.372 AU, H=5.6 ~257 km) from KPNO (Oct. 23.14p1, 24.24p1 & 24.32p1)

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

K06QI1R 2006 QR181 (KBO, q=37.252 AU, Q=56.223 AU, H=7.0 ~135 km) from Las Campanas Obs. (2007 July 12.40p1 & 2007 July 12.45p1) and KPNO (Oct. 23.34p1 at r=23.0, 23.40p1 at r=22.9, 24.23p1 at r=22.5 & 24.30p1 at r=22.3)

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

CK08X030 C/2008 X3 (LINEAR) (i=66.3°, q=1.915 AU, TP=2008 Oct. 11.182 TT) from RAS Obs. Mayhill (Dec. 6.44p1), Ageo Obs. (Dec. 6.84-85p3), and Chante-Perdrix Obs. (Dec. 8.23-24p2)

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

PK08X010 P/2008 X1 (Hill) (q=2.341 AU, Q=4.852 AU, TP=2009 May 11.785 TT) from LINEAR (Dec. 4.16-20p4), Astronomical Research Obs. (ARO) (Dec. 5.28-29p3), Moriyama Obs. (Dec. 5.68-69p2 & 6.69-70p2), Ageo Obs. (Dec. 5.70-71p2), Kiev Comet Station (Dec. 5.94-96p6), Montcabre Obs. (Dec. 5.97-98p3), Chante-Perdrix Obs. (Dec. 6.88p1 & 7.84-86p3), and San Marcello Pistoiese Obs. (Dec. 7.80-83p3)

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

Observations of risk-listed objects
K08X02O 2008 XO2 (arc=2 days, H=18.7 ~616m) from ARO (Dec. 7.18-21p3)
K08X01C 2008 XC1 (small asteroid, arc=4 days, H=23.6 ~65m) from ARO (Dec. 7.22p4) and Magdalena Ridge Obs. (MRO) (Dec. 7.29p4)
K08W96K 2008 WK96 (small asteroid, arc=7 days, H=23.0 ~85m) from ARO (Dec. 7.27p3)
K08U99W 2008 UW99 (small asteroid, arc=37 days, H=24.7 ~39m) from MRO (Dec. 7.49-50p2 at R=21.8-22.2)
Observations of recently (no longer) risk-listed objects
K08X02P 2008 XP2 (arc=2 days, H=18.5 ~676m) from MRO (Dec. 7.33-34p4) and ARO (Dec. 7.39-40p5)
K08X01M 2008 XM1 (almost small, Q=4.090 AU, arc=3 days, H=22.0 ~135m) from ARO (Dec. 7.11-12p4) and LINEAR (Dec. 7.20-25p5)
K08W63Q 2008 WQ63 (arc=15 days, H=20.0 ~339m) from Desert Moon Obs. (Dec. 7.33-35p3)
K08W59B 2008 WB59 (arc=14 days, H=19.4 ~446m) from LINEAR (Dec. 7.26-31p5)
K04X03K 2004 XK3 (small asteroid, arc=2 opp, H=24.4 ~45m) from the Spacewatch 0.9m telescope (Dec. 6.18-21p3)
Observations of small asteroids (H>22.0)
K08X02C 2008 XC2 (arc=4 days, H=23.4 ~71m) from Calar Alto Obs. (Dec. 7.80-81p3)
Observations of other objects
K08X03E 2008 XE3 (arc=67 days, H=16.3 ~1.86 km) from Calar Alto Obs. (Dec. 8.02-04p3) and Farra d'Isonzo Obs. (Dec. 8.03-04p2)
K08X02X 2008 XX2 (arc=1 day, H=21.5 ~170m) from ARO (Dec. 7.36-37p3)
K08X02W 2008 XW2 (arc=1 day, H=20.7 ~245m) from ARO (Dec. 7.44p3)
K08X02V 2008 XV2 (arc=1 day, H=20.2 ~309m) from ARO (Dec. 7.41-42p3)
K08X02A 2008 XA2 (arc=3 days, H=21.3 ~186m) from LINEAR (Dec. 7.19-24p5)
K08X01B 2008 XB1 (arc=5 days, H=20.8 ~234m) from Remanzacco Obs. (Dec. 7.71-73p3) and Great Shefford Obs. (Dec. 7.79-80p3)
K08W94Z 2008 WZ94 (q=0.336 AU, arc=7 days, H=20.1 ~323m) from Desert Moon Obs. (Dec. 7.13-16p3)
K08W60H 2008 WH60 (arc=14 days, H=20.8 ~234m) from LINEAR (Dec. 7.20-24p4)
K08V00N 2008 VN (Q=5.011 AU, arc=2 opp, H=16.9 ~1.41 km) from LINEAR (Dec. 7.26-31p5)
K08U94Z 2008 UZ94 (arc=40 days, H=17.7 ~977m) from Desert Moon Obs. (Dec. 7.04-05p5)
K08U07E 2008 UE7 (arc=41 days, H=20.4 ~282m) from Iluro Obs. (Dec. 6.12p3), Grove Creek Obs. (Dec. 7.70p3), and Remanzacco Obs. (Dec. 7.92p3)
K08S07P 2008 SP7 (Q=4.200 AU, arc=75 days, H=18.9 ~562m) from LINEAR (Dec. 7.20-25p4)
K08S01O 2008 SO1 (Q=4.611 AU, arc=76 days, H=19.7 ~389m) from Desert Moon Obs. (Dec. 7.38-42p3)
K08M05B 2008 MB5 (arc=160 days, H=19.0 ~537m) from Desert Moon Obs. (Dec. 7.47-49p3)
K08L16W 2008 LW16 (arc=175 days, H=19.8 ~371m) from the Siding Spring Survey (SSS) (Dec. 7.48p1)
K06W01Q 2006 WQ1 (arc=2 opp, H=19.4 ~446m) from the Spacewatch 1.8m telescope (Dec. 7.38-39p3)
K06V14B 2006 VB14 (arc=2 opp, H=18.5 ~676m) from Iluro Obs. (Dec. 6.22-23p3) and the Catalina Sky Survey (CSS) (Dec. 7.41-42p4)
K06UL6S 2006 US216 (IEO, q=0.278 AU, Q=0.995 AU, arc=4 opp, H=19.8 ~371m) from SSS (Dec. 7.46p2)
K06U63C 2006 UC63 (arc=2 opp, H=19.8 ~371m) from CSS (Dec. 7.36-38p4)
K05YG5S 2005 YS165 (arc=2 opp, H=17.5 ~1.07 km) from CSS (Dec. 6.51-53p4)
K05W55S 2005 WS55 (arc=4 opp, H=16.1 ~2.04 km, q=1.108 AU) from Ametlla del Valles Obs. (Dec. 5.75p1, 5.80-81p2 & 5.88-89p2) and CSS (Dec. 6.13-14p4)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from LINEAR (Dec. 7.13-18p5)
K05B00C 2005 BC (arc=2 opp, H=17.9 ~891m) from CSS (Dec. 7.48-50p4)
K04X60Y 2004 XY60 (q=0.130 AU, arc=4 opp, H=18.9 ~562m) from SSS (Dec. 7.47-48p2)
K04F01Z 2004 FZ1 (i=52.6°, arc=3 opp, H=18.3 ~741m) from Spacewatch 1.8m (Dec. 7.52-53p3 at V=21.8-22.7)
K03Y01O 2003 YO1 (arc=4 opp, H=19.5 ~426m) from LINEAR (Dec. 7.26-30p4)
K02X90P 2002 XP90 (arc=3 opp, H=18.4 ~708m) from the Mt. Lemmon Survey (MLS) (Dec. 7.45-47p4)
K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.7 ~1.55 km) from LINEAR (Dec. 7.20-25p5)
K02A04U 2002 AU4 (arc=4 opp, H=18.9 ~562m) from SSS (Dec. 7.45p2)
K01V05K 2001 VK5 (arc=5 opp, H=17.8 ~933m) from SSS (Dec. 7.44p2)
K00QD0K 2000 QK130 (arc=3 opp, H=20.6 ~257m) from Spacewatch 1.8m (Dec. 7.36-37p3)
J96T09E 1996 TE9 (arc=3 opp, H=18.8 ~589m) from Ametlla del Valles Obs. (Dec. 5.76-77p2, 5.82-84p2 & 5.90-91p2)
I9973 189973 2003 XE11 from Desert Moon Obs. (Dec. 7.07-11p3)
I5851 185851 2000 DP107 from CSS (Dec. 5.16-17p4)
G2900 162900 2001 HG31 from New Millennium Obs. (Nov. 25.98-99p2) and LINEAR (Dec. 7.20-25p5)
G2679 162679 2000 TK1 from New Millennium Obs. (Nov. 25.80-85p4)
G2004 162004 1991 VE from LINEAR (Dec. 7.32-37p5)
F3306 153306 2001 JL1 from New Millennium Obs. (Nov. 26.00p2)
F2931 152931 2000 EA107 from CSS (Dec. 7.48-50p3)
D8852 138852 2000 WN10 from LINEAR (Dec. 7.20-25p5)
D7925 137925 2000 BJ19 from Spacewatch 0.9m (Dec. 6.52-54p3)
D7924 137924 2000 BD19 from CSS (Dec. 5.48-51p4)
D6923 136923 1998 JH2 from LINEAR (Dec. 7.32-35p3)
A8519 108519 2001 LF from Spacewatch 1.8m (Dec. 7.40-42p3)
89355 89355 2001 VS78 from New Millennium Obs. (Nov. 26.02p2)
85774 85774 1998 UT18 from CSS (Dec. 7.46-47p4)
85236 85236 1993 KH from San Vito Obs. (Dec. 7.91-92p3)
68350 68350 2001 MK3 from Desert Moon Obs. (Dec. 7.44-45p5)
53430 53430 1999 TY16 from New Millennium Obs. (Nov. 25.99p2)
36236 36236 1999 VV from New Millennium Obs. (Nov. 25.79-83p6)
07335 7335 1989 JA from Spacewatch 0.9m (Dec. 6.18-22p3)
04183 4183 Cuno (1959 LM) from New Millennium Obs. (Nov. 25.88-93p6)
04179 4179 Toutatis (1989 AC) from Iluro Obs. (Dec. 6.23-24p3)
03200 3200 Phaethon (1983 TB) from New Millennium Obs. (Nov. 25.97p2) and LINEAR (Dec. 7.19-24p5)
03103 3103 Eger (1982 BB) from CSS (Dec. 7.53-55p4)
02368 2368 Beltrovata (1977 RA) from MLS (Dec. 7.33-34p4) and CSS (Dec. 7.33-34p4)
02212 2212 Hephaistos (1978 SB) from CSS (Dec. 7.20-22p4)
01916 1916 Boreas (1953 RA) from New Millennium Obs. (Nov. 25.98p2)
01864 1864 Daedalus (1971 FA) from Iluro Obs. (Dec. 6.26p3)
01620 1620 Geographos (1951 RA) from New Millennium Obs. (Nov. 25.90-94p6) and LINEAR (Dec. 7.13-18p5)

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

K08X03E 2008 XE3 (H=16.3 ~1.86 km) was discovered at 0900 UT on 6 Dec. by LINEAR, which observed it at Dec. 6.38-42p5. The discovery was confirmed by CSS (Oct. 2.47-49p4), Remanzacco Obs. (Dec. 6.97-98p2, 7.94p1 & 7.98p1), Great Shefford Obs. (Dec. 7.01-02p2), Terskol Obs. (Dec. 7.04p2), MRO (Dec. 7.27-28p4), MLS (Dec. 7.35-36p4), and Sabino Canyon Obs. (Dec. 7.45-46p3).

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

PK08U010 P/2008 U1 (McMillan) from Ageo Obs. (Nov. 28.67p2) and MLS (Dec. 4.20-23p4)
CK08R030 C/2008 R3 (LINEAR) from Szeged Obs. (Nov. 23.76-77p2) and Moriyama Obs. (Dec. 2.47-48p2)
PK08Q20P P/2008 QP20 (LINEAR-Hill) from Moriyama Obs. (Dec. 1.59-60p2), CSS (Dec. 2.18-21p4), Malaga Obs. (Dec. 2.81-83p3), Montcabre Obs. (Dec. 2.85-86p3 & 5.78-80p3), La Dehesilla Obs. (Dec. 2.89-90p3), Schiaparelli Obs. (Dec. 3.95p1 & 4.02p1), Altamira Obs. (Dec. 4.89-91p3), Mataro Obs. (Dec. 5.00-01p2), LINEAR (Dec. 6.19-24p5), and San Vito Obs. (Dec. 7.79-81p4)
CK08Q030 C/2008 Q3 (Garradd) from SSS (Oct. 30.47p1), RAS Obs. Moorook (Nov. 29.46-47p2), and Kambah Obs. (Nov. 30.48-49p2)
PK08Q020 P/2008 Q2 (Ory) from Yatsuka Obs. (Dec. 1.50-51p3), LINEAR (Dec. 2.20-25p5), Petit Jean Mtn. South Obs. (PJMSO) (Dec. 2.27-28p6 & 7.05-06p6), Hamamatsu-Yuto Obs. (Dec. 2.52-55p6), Malaga Obs. (Dec. 2.89-90p3), La Dehesilla Obs. (Dec. 2.94-95p3), Hiratsuka Obs. (Dec. 3.44-45p3), Altamira Obs. (Dec. 4.93-94p3), Nazaret Obs. (Dec. 4.96-97p3), Mataro Obs. (Dec. 5.94-97p2), Moriyama Obs. (Dec. 6.57-58p2), and San Vito Obs. (Dec. 7.85-87p2)
CK08P010 C/2008 P1 (Garradd) from SSS (Oct. 19.52p1, Nov. 23.50p1 & 30.50p1), RAS Moorook (Nov. 29.45p1), North Ryde Obs. (Nov. 30.45p1, 30.50p1 & Dec. 5.46-48p2), Farm Cove Obs. (Dec. 3.39p3), and Moriyama Obs. (Dec. 6.41-42p2)
PK08O020 P/2008 O2 (McNaught) from SSS (Oct. 15.42p1 & 21.48p1) and Buchloe Obs. (Nov. 27.76p1)
PK08L020 P/2008 L2 (Hill) from Montcabre Obs. (Dec. 1.83p3), LINEAR (Dec. 2.13-18p5), Farm Cove Obs. (Dec. 3.43p3), MLS (Dec. 4.16-19p4), and Moriyama Obs. (Dec. 6.48-49p2)
CK08J060 C/2008 J6 (Hill) from Geisei Obs. (Oct. 30.51-54p3 & Nov. 30.49p2)
PK08J030 P/2008 J3 (McNaught) from SSS (Oct. 25.49p1 & Dec. 2.46p1), North Ryde Obs. (Nov. 30.42-43p2), and Moriyama Obs. (Dec. 6.44-45p2)
CK08J010 C/2008 J1 (Boattini) from Geisei Obs. (Nov. 18.50p1, 20.46p1, 24.67p1 & Dec. 2.73p1), Moriyama Obs. (Dec. 1.65-66p2), Chante-Perdrix Obs. (Dec. 2.85p1), Malaga Obs. (Dec. 2.95-96p3), La Dehesilla Obs. (Dec. 6.90p1), and PJMSO (Dec. 7.04-05p6)
CK08E010 C/2008 E1 (Catalina) from Ageo Obs. (Dec. 2.74-75p3) and Sandlot Obs. (Dec. 4.41-42p3)
CK08A010 C/2008 A1 (McNaught) from Geisei Obs. (Nov. 20.38-39p3, 28.37p1 & 30.37p2), Szeged Obs. (Nov. 23.72-73p2), Moriyama Obs. (Nov. 30.38p1), Chante-Perdrix Obs. (Dec. 2.72-73p2), and Altamira Obs. (Dec. 3.80p3 & 4.80p3)
CK07V53O C/2007 VO53 (Spacewatch) from Ageo Obs. (Dec. 2.69-70p3), Ametlla del Valles Obs. (Dec. 3.05-06p3), Geisei Obs. (Dec. 3.49p3), and Moriyama Obs. (Dec. 7.61-62p2)
CK07U010 C/2007 U1 (LINEAR) from Hamamatsu-Yuto Obs. (Nov. 30.39-40p5), Moriyama Obs. (Dec. 1.57-58p2), MLS (Dec. 2.19-21p4), LINEAR (Dec. 4.06-12p5), Altamira Obs. (Dec. 4.88-89p3), and Vicksburg Obs. (Dec. 5.11-13p3)
PK07R010 P/2007 R1 (Larson) from Geisei Obs. (Dec. 3.51-52p2) and Moriyama Obs. (Dec. 6.60-61p2)
CK07Q030 C/2007 Q3 (Siding Spring) from SSS (Oct. 22.65-67p3 & 30.70p1), AAAA Buenos Aires Obs. (Nov. 21.04-09p3 & 22.19-22p3), Tzec Maun Obs. Pingelly (Nov. 28.72p1), Kambah Obs. (Nov. 30.58p2), North Ryde Obs. (Dec. 5.51-52p2), and Auckland Obs. (Dec. 7.47p3)
CK06W030 C/2006 W3 (Christensen) from Szeged Obs. (Nov. 23.82-83p2), Hamamatsu-Yuto Obs. (Nov. 30.37-38p3 & Dec. 3.39p3), Nazaret Obs. (Dec. 1.82-83p4), Moriyama Obs. (Dec. 2.49p2), Montcabre Obs. (Dec. 2.76-79p3), Aravaca Obs. (Dec. 2.76-77p3), Kielce Obs. (Dec. 2.76-86p11), Malaga Obs. (Dec. 2.98p3), Xingming Obs. (Dec. 3.56-58p3), Altamira Obs. (Dec. 3.82-83p3), Tzec Maun Obs. Mayhill (Dec. 4.14p1), and Chante-Perdrix Obs. (Dec. 6.75-76p3)
CK06Q010 C/2006 Q1 (McNaught) from Nagano Obs. (Nov. 30.84-85p4 & Dec. 6.84-85p4), Ageo Obs. (Dec. 2.84p2), and Hiratsuka Obs. (Dec. 5.84-85p3)
CK06O02F C/2006 OF2 (Broughton) from Geisei Obs. (Oct. 27.60p1, 28.67p1, Nov. 4.67p1, 20.45p1 & Dec. 2.74p1), RAS Mayhill (Dec. 1.36-37p2), Chante-Perdrix Obs. (Dec. 2.82-83p3), Hamamatsu-Yuto Obs. (Dec. 2.82-83p3 & 3.77-78p3), Vallauris Obs. (Dec. 2.90p1 & 4.15p1), Malaga Obs. (Dec. 2.93p3), La Dehesilla Obs. (Dec. 2.98-99p3), PJMSO (Dec. 4.42-43p6), Altamira Obs. (Dec. 4.98-01p3), Moriyama Obs. (Dec. 5.71p2), and Montcabre Obs. (Dec. 5.91-93p3)
CK06K010 C/2006 K1 (McNaught) from Ametlla del Valles Obs. (Nov. 27.05p1 & 27.10p1) and Moriyama Obs. (Dec. 7.64-65p2)
PK05Y020 P/2005 Y2 (McNaught) from Ageo Obs. (Nov. 26.73p2), MLS (Dec. 2.36-38p4), and Schiaparelli Obs. (Dec. 3.98p1 & 4.12p1)
CK05L030 C/2005 L3 (McNaught) from Ageo Obs. (Nov. 29.83-84p3) and Hiratsuka Obs. (Dec. 5.82-83p3)
0205P 205P/Giacobini from Geisei Obs. (Nov. 24.59p1, 25.40p1, 28.46p1 & 30.42p1), Tzec Maun Obs. Mayhill (Dec. 1.13-14p3), and Vicksburg Obs. (Dec. 3.05-07p3 & 5.06-07p3)
0204P 204P/LINEAR-NEAT from LINEAR (Dec. 1.38-43p5), Chante-Perdrix Obs. (Dec. 6.94-97p3), and Lumezzane Obs. (Dec. 7.09p4)
0203P 203P/Korlevic from Schiaparelli Obs. (Oct. 25.93p1, 26.01p1, Dec. 3.77p1 & 3.87p1)
0202P 202P/Scotti from La Sagra Obs. (Nov. 26.06-09p6), Stixendorf Obs. (Nov. 30.83-84p3), Spacewatch 0.9m (Dec. 1.24-28p3), LINEAR (Dec. 1.26-31p5), Lumezzane Obs. (Dec. 6.97-98p4), La Dehesilla Obs. (Dec. 6.99p1), and Moriyama Obs. (Dec. 7.67-68p2)
0200P 200P/Larsen from MLS (Nov. 30.14-16p4 & Dec. 2.17-19p4)
0195P 195P/Hill from Ageo Obs. (Nov. 29.79p3) and Moriyama Obs. (Dec. 3.72p1, 3.77p1 & 6.75-76p2)
0193P 193P/LINEAR-NEAT from Schiaparelli Obs. (Nov. 20.08p1 & 20.22p1) and Buchloe Obs. (Nov. 27.81p1)
0144P 144P/Kushida from Tzec Maun Obs. Mayhill (Nov. 28.15-16p3 & 30.16p3), Ageo Obs. (Nov. 28.62-63p3), Tzec Maun Obs. Pingelly (Nov. 28.69p1), Stixendorf Obs. (Nov. 29.89-90p3), RAS Mayhill (Dec. 1.40-41p2), Yatsuka Obs. (Dec. 1.54p3), Moriyama Obs. (Dec. 1.61-62p2), Montcabre Obs. (Dec. 1.85-87p3), LINEAR (Dec. 2.20-25p5), PJMSO (Dec. 2.28-29p6 & 7.06-08p5), Geisei Obs. (Dec. 2.71p1), Chante-Perdrix Obs. (Dec. 2.75-77p3 & 6.81-82p2), Malaga Obs. (Dec. 2.91-92p3), Vicksburg Obs. (Dec. 3.19-20p3 & 5.19-21p3), Hiratsuka Obs. (Dec. 3.48-49p3), Nazaret Obs. (Dec. 4.94-95p3), Altamira Obs. (Dec. 4.95-96p3), Paus Obs. (Dec. 5.81-82p3), Mataro Obs. (Dec. 5.93-98p3), Lumezzane Obs. (Dec. 6.89-90p4), and San Vito Obs. (Dec. 7.87-89p2)
0139P 139P/Vaisala-Oterma from Paus Obs. (Nov. 14.99p1), Ageo Obs. (Nov. 29.68p3), and Spacewatch 0.9m (Nov. 30.35-38p3 & Dec. 4.32-36p3)
0117P 117P/Helin-Roman-Alu 1 from MLS (Nov. 30.28-30p4), LINEAR (Dec. 2.25-31p5), Nazaret Obs. (Dec. 4.98-99p4), Paus Obs. (Dec. 5.85p1), and Chante-Perdrix Obs. (Dec. 6.77-80p3)
0116P 116P/Wild 4 from Nagano Obs. (Nov. 30.78-79p4), La Dehesilla Obs. (Dec. 3.02p1), LINEAR (Dec. 3.38-43p5), and Altamira Obs. (Dec. 5.21-22p3)
0094P 94P/Russell 4 from Buchloe Obs. (Nov. 26.83p1), MLS (Dec. 2.25-27p4), and Schiaparelli Obs. (Dec. 3.97p1 & 4.03p1)
0081P 81P/Wild 2 from LINEAR (Dec. 1.20-25p4), Spacewatch 1.8m (Dec. 1.20-21p3), MLS (Dec. 1.25-27p4), Tzec Maun Obs. Mayhill (Dec. 2.29p1), Chante-Perdrix Obs. (Dec. 2.79-81p3), and Moriyama Obs. (Dec. 6.53-54p2)
0074P 74P/Smirnova-Chernykh from RAS Mayhill (Nov. 29.44p1 & 30.38p1), MLS (Dec. 1.50-52p4), Malaga Obs. (Dec. 3.04-06p3), and Altamira Obs. (Dec. 5.19-20p3)
0067P 67P/Churyumov-Gerasimenko from SSS (Oct. 18.49p1), Ageo Obs. (Nov. 29.36p3), Montcabre Obs. (Dec. 1.77-78p3 & 2.74p3), Nazaret Obs. (Dec. 1.80-81p4), Montana Blanca Obs. (Dec. 1.84-85p3), Santa Maria de Montmagastrell Obs. (Dec. 2.73p3), and Vicksburg Obs. (Dec. 3.02-03p3 & 5.02-04p3)
0061P 61P/Shajn-Schaldach from Churchstoke Obs. (Nov. 28.83p1), Stixendorf Obs. (Nov. 29.90-91p3), CSS (Dec. 1.29-32p4), Yatsuka Obs. (Dec. 1.53p3), Moriyama Obs. (Dec. 1.63-64p2), Chante-Perdrix Obs. (Dec. 2.77-78p3), Montcabre Obs. (Dec. 2.90p2), Tzec Maun Obs. Mayhill (Dec. 3.16p1), Vicksburg Obs. (Dec. 3.24-27p3 & 5.24-26p3), Hiratsuka Obs. (Dec. 3.46-47p3), and Kiev Comet Station (Dec. 5.84-85p3)
0059P 59P/Kearns-Kwee from Stixendorf Obs. (Nov. 29.88p1), Yatsuka Obs. (Dec. 1.51-52p3), PJMSO (Dec. 2.26-27p6 & 7.03-04p6), Moriyama Obs. (Dec. 2.54-55p2), Chante-Perdrix Obs. (Dec. 2.73-74p2), Montcabre Obs. (Dec. 2.81-83p2), Malaga Obs. (Dec. 2.85-86p3), La Dehesilla Obs. (Dec. 2.93-94p3), Paus Obs. (Dec. 5.80p2), LINEAR (Dec. 6.19-24p4), and San Vito Obs. (Dec. 7.82-83p2)
0051P 51P/Harrington from Skylive Obs. (Nov. 21.85-86p2), Ageo Obs. (Nov. 26.75-76p2), Nagano Obs. (Nov. 30.47-48p4), LINEAR (Dec. 1.26-31p5), Tzec Maun Obs. Mayhill (Dec. 1.33p2), Yatsuka Obs. (Dec. 1.55-56p3), Moriyama Obs. (Dec. 2.63-64p2), La Dehesilla Obs. (Dec. 2.96p3), Nazaret Obs. (Dec. 2.97-98p4 & 4.92-93p4), Hiratsuka Obs. (Dec. 3.49-50p3), Montcabre Obs. (Dec. 5.88-89p3), Santa Maria de M. Obs. (Dec. 6.02-03p3), and PJMSO (Dec. 7.15-17p6)
0047P 47P/Ashbrook-Jackson from SSS (Oct. 18.49p1) and Montcabre Obs. (Dec. 1.79-80p3)
0044P 44P/Reinmuth 2 from Spacewatch 0.9m (Dec. 2.21-25p3), La Dehesilla Obs. (Dec. 2.97-98p3), LINEAR (Dec. 3.25-30p5 & 6.25-30p4), Santa Maria de M. Obs. (Dec. 6.05-09p3), and Moriyama Obs. (Dec. 6.63-64p2)
0033P 33P/Daniel from Ageo Obs. (Nov. 28.84-85p2), Geisei Obs. (Dec. 2.80p1), and CSS (Dec. 6.45-53p8)
0029P 29P/Schwassmann-Wachmann 1 from Geisei Obs. (Nov. 24.66p1 & Dec. 2.75p1), Iluro Obs. (Nov. 30.14-15p3), Moriyama Obs. (Dec. 1.71-72p2 & 5.73-74p2), PJMSO (Dec. 2.46-47p5), Santa Maria de M. Obs. (Dec. 2.98-01p3), La Dehesilla Obs. (Dec. 3.00-01p3), Malaga Obs. (Dec. 3.01-03p3), Gualba Obs. (Dec. 4.18-19p2), Altamira Obs. (Dec. 5.08-10p3), Montcabre Obs. (Dec. 6.00-01p2), and Chante-Perdrix Obs. (Dec. 6.90-93p3)
0022P 22P/Kopff from Ageo Obs. (Nov. 29.85p3 & Dec. 2.85-86p2)
0019P 19P/Borrelly from Altamira Obs. (Dec. 5.24p3), Santa Maria de M. Obs. (Dec. 6.13-14p3), Montcabre Obs. (Dec. 6.18-20p3), LINEAR (Dec. 6.45-50p5), and Xingming Obs. (Dec. 6.87-91p3)
0015P 15P/Finlay from Ageo Obs. (Nov. 21.82p1 & 28.77p2), Altamira Obs. (Dec. 5.13-15p3), and Moriyama Obs. (Dec. 5.77p2)
0006P 6P/d'Arrest from SSS (Nov. 12.50-53p4), Stixendorf Obs. (Nov. 29.81-82p3), Geisei Obs. (Nov. 30.43p1), Chante-Perdrix Obs. (Dec. 2.74-75p3), and La Dehesilla Obs. (Dec. 2.83-84p3)

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

PK08T040 P/2008 T4 (Hill) (q=2.512 AU, Q=6.382 AU, TP=2008 Dec. 23.91678 TT) from Ageo Obs. (Nov. 29.47-48p3), Moriyama Obs. (Dec. 2.52p2), Farm Cove Obs. (Dec. 3.44-45p3), and Paus Obs. (Dec. 5.76-78p3)

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

CK08T020 C/2008 T2 (Cardinal) (i=56.3°, q=1.202 AU, TP=2009 June 13.22509 TT) from Moriyama Obs. (Dec. 1.68-69p2), PJMSO (Dec. 2.45p6), Chante-Perdrix Obs. (Dec. 2.83-85p3), Altamira Obs. (Dec. 5.01-04p3), and Kiev Comet Station (Dec. 6.00-02p3)

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

CK08S030 C/2008 S3 (Boattini) (i=162.7°, q=8.023 AU, TP=2011 June 5.37195 TT) from Kiev Comet Station (Nov. 18.94-96p5), Ametlla del Valles Obs. (Dec. 2.97-02p3), Schiaparelli Obs. (Dec. 3.00p1 & 4.10p1), and Chante-Perdrix Obs. (Dec. 6.83-84p3)

Observers on 8 December '08

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

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2008-X62 -- C/2007 Q3
`349`	Ageo 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
`J24`	Altamira 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
`B37`	Ametlla 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
`J20`	Aravaca Obs., 1 in MPEC 2008-X62 -- C/2006 W3
`H55`	Astronomical 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
`467`	Auckland Obs. in New Zealand, 1 in MPEC 2008-X62 -- C/2007 Q3
`215`	Buchloe Obs. in Germany, 3 in MPEC 2008-X62 -- P/2008 O2, 193P, 94P
`493`	Calar Alto Obs. in Spain, 2 in MPEC 2008-X64 -- 2008 XE3, 2008 XC2
`703`	Catalina 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
`807`	Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-X69 -- 2007 VJ302
`A77`	Chante-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
`J18`	Churchstoke Obs., 1 in MPEC 2008-X62 -- 61P
`448`	Desert Moon Obs. in New Mexico, 7 in MPEC 2008-X64 -- 2008 WZ94, 2008 WQ63, 2008 UZ94, 2008 SO1, 2008 MB5, 68350, 189973
`E85`	Farm Cove Obs. in New Zealand, 3 in MPECs 2008-X61 & 2008-X62 -- P/2008 T4, C/2008 P1, P/2008 L2
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-X64 -- 2008 XE3
`372`	Geisei 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
`J95`	Great Shefford Obs. in England, 2 in MPECs 2008-X63 & 2008-X64 -- 2008 XE3, 2008 XB1
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2008-X64 -- 2008 UE7
`442`	Gualba Obs. in Spain, 1 in MPEC 2008-X62 -- 29P
`379`	Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2008-X62 -- P/2008 Q2, C/2007 U1, C/2006 W3, C/2006 OF2
`D88`	Hiratsuka Obs., 6 in MPEC 2008-X62 -- P/2008 Q2, C/2006 Q1, C/2005 L3, 144P, 61P, 51P
`B19`	Iluro Obs. in Spain, 5 in MPECs 2008-X62 & 2008-X64 -- 2008 UE7, 2006 VB14, 4179, 1864, 29P
`415`	Kambah Obs. in the Australian Capital Territory, 2 in MPEC 2008-X62 -- C/2008 Q3, C/2007 Q3
`B02`	Kielce Obs. in Poland, 1 in MPEC 2008-X62 -- C/2006 W3
`585`	Kiev 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
`695`	Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPECs 2008-X67, 2008-X68 & 2008-X69 -- 2007 VJ302, 2007 RW10, 2006 QR181
`704`	LINEAR 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
`212`	La 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
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2008-X62 -- 202P
`304`	Las Campanas Obs. in Chile, 1 in MPEC 2008-X67 -- 2006 QR181
`130`	Lumezzane Obs. in Italy, 3 in MPEC 2008-X62 -- 204P, 202P, 144P
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2008-X63 & 2008-X64 -- 2008 XP2, 2008 XE3, 2008 XC1, 2008 UW99
`J40`	Malaga 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
`A06`	Mataro Obs. in Spain, 3 in MPEC 2008-X62 -- P/2008 QP20, P/2008 Q2, 144P
`J46`	Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-X62 -- 67P
`213`	Montcabre 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
`900`	Moriyama 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
`G96`	Mt. 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
`D81`	Nagano Obs., 3 in MPEC 2008-X62 -- C/2006 Q1, 116P, 51P
`J47`	Nazaret Obs. in Spain, 6 in MPEC 2008-X62 -- P/2008 Q2, C/2006 W3, 144P, 117P, 67P, 51P
`A24`	New Millennium Obs. in Italy, 10 in MPEC 2008-X64 -- 89355, 53430, 36236, 162900, 162679, 153306, 4183, 3200, 1916, 1620
`423`	North Ryde Obs. in New South Wales, 3 in MPEC 2008-X62 -- C/2008 P1, P/2008 J3, C/2007 Q3
`B49`	Paus Obs. in Spain, 5 in MPECs 2008-X61 & 2008-X62 -- P/2008 T4, 144P, 139P, 117P, 59P
`H45`	Petit 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
`H06`	RAS Obs. Mayhill in New Mexico, 4 in MPECs 2008-X62 & 2008-X66 -- C/2008 X3, C/2006 OF2, 144P, 74P
`D90`	RAS Obs. Moorook in South Australia, 2 in MPEC 2008-X62 -- C/2008 Q3, C/2008 P1
`473`	Remanzacco Obs. in Italy, 3 in MPECs 2008-X63 & 2008-X64 -- 2008 XE3, 2008 XB1, 2008 UE7
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-X63 -- 2008 XE3
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2008-X65 -- P/2008 X1
`233`	San Vito Obs. in Italy, 5 in MPECs 2008-X62 & 2008-X64 -- P/2008 QP20, P/2008 Q2, 85236, 144P, 59P
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2008-X62 -- C/2008 E1
`B74`	Santa Maria de Montmagastrell Obs. in Spain, 5 in MPEC 2008-X62 -- 67P, 51P, 44P, 29P, 19P
`204`	Schiaparelli Obs. in Italy, 6 in MPECs 2008-X59 & 2008-X62 -- C/2008 S3, P/2008 QP20, P/2005 Y2, 203P, 193P, 94P
`E12`	Siding 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
`B40`	Skylive Obs. in Italy, 1 in MPEC 2008-X62 -- 51P
`691`	Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2008-X62 & 2008-X64 -- 2004 XK3, 137925, 7335, 202P, 139P, 44P
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2008-X62 & 2008-X64 -- 2006 WQ1, 2004 FZ1, 2000 QK130, 108519, 81P
`A71`	Stixendorf Obs. in Austria, 5 in MPEC 2008-X62 -- 202P, 144P, 61P, 59P, 6P
`629`	Szeged Obs. in Hungary, 3 in MPEC 2008-X62 -- C/2008 R3, C/2008 A1, C/2006 W3
`B18`	Terskol Obs. in Russia, 1 in MPEC 2008-X63 -- 2008 XE3
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 6 in MPEC 2008-X62 -- C/2006 W3, 205P, 144P, 81P, 61P, 51P
`D25`	Tzec Maun Obs. Pingelly in Western Australia, 2 in MPEC 2008-X62 -- C/2007 Q3, 144P
`B51`	Vallauris Obs. in France, 1 in MPEC 2008-X62 -- C/2006 OF2
`H47`	Vicksburg Obs. in Mississippi, 5 in MPEC 2008-X62 -- C/2007 U1, 205P, 144P, 67P, 61P
`C42`	Xingming Obs. in China, 2 in MPEC 2008-X62 -- C/2006 W3, 19P
`367`	Yatsuka 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 XU2	NEODyS	1349	2039	1	3.96e-08	-7.47	-7.47	0	NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2008/12/06.262 to 2008/12/07.417."

2008 XO2	NEODyS	1349	2027-2064	5	1.12e-08	-4.67	-5.07	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/05.195 to 2008/12/07.214."
2008 XO2	JPL Sentry	1348	2064-2077	3	3.0e-09	-5.39	-5.43	0	JPL: "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 XC1	NEODyS	1349	2085-2088	2	3.23e-06	-4.99	-5.24	0	NEODyS: "Based on 58 optical observations (of which 0 are rejected as outliers) from 2008/12/03.369 to 2008/12/07.295."
2008 XC1	JPL Sentry	1348	2085-2088	2	3.3e-06	-4.98	-5.23	0	JPL: "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 WK96	NEODyS	1349	2024-2031	2	6.06e-05	-2.76	-2.76	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/11/30.388 to 2008/12/07.275."
2008 WK96	JPL Sentry	1348	2024-2031	2	6.3e-05	-2.75	-2.75	0	JPL: "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 UW99	JPL Sentry	1348	R E M O V E D						JPL: 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.

1759	Grabbed MPEC 2008-X67 - 2006 QR181 - see above Grabbed MPEC 2008-X68 - 2007 RW10 - see above Grabbed MPEC 2008-X69 - 2007 VJ302 - see above
1700	Grabbed MPEC 2008-X65 - Comet P/2008 X1 (Hill) - see above Grabbed MPEC 2008-X66 - Comet C/2008 X3 (LINEAR) - see above
1349	Noted 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
1348	Noted 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
0058	Grabbed MPEC 2008-X62 - Observations of Comets - see above Grabbed MPEC 2008-X63 - 2008 XE3 - see above
0027	Grabbed 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

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