2010-01-06 Tracking News

Contents on 6 January '10

IAU Minor Planet Center
- NEOCP Activity -- nine listings: 2 new, 7 updated
- New MPECs -- eight MPECs
Observers -- 45 observing facilities
Impact Risk Monitoring -- one object
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
News image catalog
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 6 January '10

The MPC's NEO Confirmation Page has 9 listings: 2 new, 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and seven updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of twelve listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 6 January '10

Minor Planet Electronic Circulars

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

MPEC 2010-A16 time-stamped "07:09 UT" - Daily Orbit Update - see below
MPEC 2010-A17 time-stamped "15:30 UT" - Comet C/2009 W2 (Boattini) - see below
MPEC 2010-A18 time-stamped "15:36 UT" - Comet C/2009 Y1 (Catalina) - see below
MPEC 2010-A19 time-stamped "15:43 UT" - Comet P/2009 Y2 (Kowalski) - see below
MPEC 2010-A20 time-stamped "16:01 UT" - Observations of Comets - see below
MPEC 2010-A21 time-stamped "17:50 UT" - 2008 EB32 - see below
MPEC 2010-A22 time-stamped "17:54 UT" - 2010 AE - see below
MPEC 2010-A23 time-stamped "22:07 UT" - 2010 AF

MPEC 2010-A23 - "22:07 UT" - 2010 AF

K10A00F 2010 AF (small asteroid, Earth MOID=9.5 LD, H=24.9 ~35m) was discovered at 0858 UT on 6 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 6.37-39p4 and 6.48p4. The discovery was confirmed by Astronomical Research Obs. Westfield (ARO Westfield) (Jan. 6.41-42p4), Moriyama Obs. (Jan. 6.58-59p3), and Great Shefford Obs. (Jan. 6.89-90p3).

MPEC 2010-A22 - "17:54 UT" - 2010 AE

K10A00E 2010 AE (H=19.3 ~467m) was discovered at 0932 UT on 5 Jan. by the Spacewatch 0.9m telescope, which observed it at Jan. 5.40-43p3. The discovery was confirmed by the Spacewatch 1.8m telescope (Jan. 5.49-50p3 & 6.24-25p3), Kevin Hills via RAS Obs. Moorook (Jan. 5.67-70p4), Grasslands Obs. (Jan. 6.21p3), Magdalena Ridge Obs. (MRO) (Jan. 6.24-26p4), ARO Westfield (Jan. 6.37p3), and Moriyama Obs. (Jan. 6.63-64p2).

MPEC 2010-A21 - "17:50 UT" - 2008 EB32

K08E32B 2008 EB32 (H=19.6 ~407m) from David Tholen's team on Mauna Kea (Nov. 11.40-42p4 at R=23.1-9, Dec. 6.38p1 at R=23.8 & 9.38-39p3 at R=23.9-24.1)

MPEC 2010-A20 - "16:01 UT" - Observations of Comets

CK09U030 C/2009 U3 (Hill) from Ageo Obs. (Dec. 30.56-57p2), Vicksburg Obs. (Jan. 2.03-06p3), Maidbronn Obs. (Jan. 2.81-82p3), Castelmartini Obs. (Jan. 2.82p3), and LINEAR (Jan. 4.08-13p5)
PK09T020 P/2009 T2 (La Sagra) from Remanzacco Obs. (Nov. 3.94p2), Moriyama Obs. (Dec. 29.48p2), La Dehesilla Obs. (Jan. 1.86p1), Vicksburg Obs. (Jan. 2.08-13p3), Chante-Perdrix Obs. (Jan. 2.77-78p3), and Castelmartini Obs. (Jan. 2.80-81p3)
CK09R010 C/2009 R1 (McNaught) from Ageo Obs. (Dec. 20.37-38p2 & 29.37p2)
PK09Q040 P/2009 Q4 (Boattini) from Kiev Comet Station (Dec. 23.19-20p4), Vicksburg Obs. (Dec. 29.44-46p3), Moriyama Obs. (Dec. 29.68-69p2), Montcabre Obs. (Jan. 2.01-02p3), and Rodeno Obs. (Jan. 2.08-09p3)
PK09O030 P/2009 O3 (Hill) from Ageo Obs. (Dec. 20.52-53p2) and Buchloe Obs. (Jan. 3.76p3)
CK09F060 C/2009 F6 (Yi-SWAN) from Farm Cove Obs. (Dec. 25.39-40p3) and Kambah Obs. (Jan. 4.51-52p2)
CK08P010 C/2008 P1 (Garradd) from Moriyama Obs. (Dec. 29.43-44p3), Ageo Obs. (Dec. 30.44-45p2), and Maidbronn Obs. (Jan. 2.71-72p3 & 4.71-72p3)
CK08N010 C/2008 N1 (Holmes) from RAS Obs. Mayhill (Dec. 16.51-52p2 & 20.52p2)
CK07Q030 C/2007 Q3 (Siding Spring) from Geisei Obs. (Dec. 16.79p1, 23.76p1 & 26.76p1), Odessa-Mayaki Obs. (Dec. 27.05-08p6 & 30.15-20p2), Vicksburg Obs. (Dec. 29.51p3), Moriyama Obs. (Dec. 29.76p2), Montcabre Obs. (Jan. 2.05-06p3), Rodeno Obs. (Jan. 2.15-16p3), Chante-Perdrix Obs. (Jan. 2.23-24p3), Altamira Obs. (Jan. 4.21-26p3), and Atlante Obs. (Jan. 4.21-23p3)
CK07N030 C/2007 N3 (Lulin) from Ageo Obs. (Dec. 28.69-70p2), Castelmartini Obs. (Jan. 2.88p2), Eschenberg Obs. (Jan. 3.78-79p3), CAST Obs. (Jan. 3.81p1), and Altamira Obs. (Jan. 4.10-11p2)
CK07M020 C/2007 M2 (Catalina) from RAS Obs. Moorook (Dec. 4.62p2) and Kambah Obs. (Jan. 4.47-48p3)
CK07G010 C/2007 G1 (LINEAR) from Los Molinos Obs. (Jan. 3.30-32p4) and Kambah Obs. (Jan. 4.59p2)
CK07D010 C/2007 D1 (LINEAR) from RAS Mayhill (Dec. 20.50-51p3) and the SZTE Asteroid Program (Dec. 29.15-16p3)
CK06W030 C/2006 W3 (Christensen) from Geisei Obs. (Dec. 4.37-38p2, 11.38-39p3, 14.38p2 & 18.38p1)
CK06S030 C/2006 S3 (LONEOS) from Ageo Obs. (Dec. 30.39-41p2) and Buchloe Obs. (Jan. 3.74p2)
CK06O02F C/2006 OF2 (Broughton) from Geisei Obs. (Dec. 20.72p1 & 26.73p1)
CK05L030 C/2005 L3 (McNaught) from RAS Mayhill (Dec. 16.50-51p2), Moriyama Obs. (Dec. 29.77-78p2), Ageo Obs. (Dec. 30.72-73p2), and Rodeno Obs. (Jan. 2.11-12p3)
P0232P 232P/Hill from Kiev Comet Station (Dec. 23.14p2), Geisei Obs. (Dec. 23.65p1), Moriyama Obs. (Dec. 29.62-63p2), and Maidbronn Obs. (Jan. 5.20-21p3)
0219P 219P/LINEAR from Ageo Obs. (Dec. 12.36-37p2, 19.38p2 & 26.38p2)
0217P 217P/LINEAR from Geisei Obs. (Dec. 16.62-63p2, 20.62p1, 23.66p1 & 26.67p1), Monte Deva Obs. (Dec. 30.01-03p5), Brixiis Obs. (Jan. 1.81-86p6), Montcabre Obs. (Jan. 1.97-98p3), Rodeno Obs. (Jan. 2.03-04p3), Kurihara Obs. (Jan. 2.56p2), Chante-Perdrix Obs. (Jan. 2.81-82p3), La Vara Obs. (Jan. 3.92p3), Buchloe Obs. (Jan. 4.84p3), and Goodricke-Pigott Obs. (Jan. 5.21-22p2)
0203P 203P/Korlevic from RAS Mayhill (Dec. 18.22-23p2), Kiev Comet Station (Dec. 22.96-99p11), Rodeno Obs. (Jan. 1.96-98p3), La Dehesilla Obs. (Jan. 2.92-93p3), Crni Vrh Obs. (Jan. 3.88-91p4), Atlante Obs. (Jan. 3.90-93p3), and La Vara Obs. (Jan. 3.95-96p3)
0137P 137P/Shoemaker-Levy 2 from Moriyama Obs. (Dec. 29.57-58p2) and CAST Obs. (Jan. 3.81p1)
0127P 127P/Holt-Olmstead from Moriyama Obs. (Dec. 29.46-47p2) and Nazaret Obs. (Jan. 3.84-85p3)
0118P 118P/Shoemaker-Levy 4 from Monte Deva Obs. (Dec. 30.03-05p5), Ageo Obs. (Dec. 30.61-63p3), Rodeno Obs. (Jan. 2.01-03p3), Kurihara Obs. (Jan. 2.57p2), CAST Obs. (Jan. 3.83p1), La Vara Obs. (Jan. 3.97-98p3), Altamira Obs. (Jan. 4.11-13p3), Buchloe Obs. (Jan. 4.84p3), and Goodricke-Pigott Obs. (Jan. 5.21-24p2)
0081P 81P/Wild 2 from Odessa-Mayaki Obs. (Dec. 27.09-10p3 & 30.15-19p3), Vicksburg Obs. (Dec. 29.48-50p3), Moriyama Obs. (Dec. 29.78-79p2), Ageo Obs. (Dec. 30.70p3), Montcabre Obs. (Jan. 2.04-05p3), Rodeno Obs. (Jan. 2.09-10p3), Chante-Perdrix Obs. (Jan. 2.24-25p3), Altamira Obs. (Jan. 3.14-16p3), Nazaret Obs. (Jan. 3.16-17p3), and Atlante Obs. (Jan. 4.18-20p3)
0074P 74P/Smirnova-Chernykh from Schiaparelli Obs. (Dec. 18.18p1 & 18.23p1) and Ageo Obs. (Dec. 30.83-84p2)
0068P 68P/Klemola from Maisoncelles Obs. (Dec. 16.93p1) and Buchloe Obs. (Jan. 4.85p2)
0043P 43P/Wolf-Harrington from Moriyama Obs. (Dec. 27.37-38p2), Ageo Obs. (Dec. 29.40p2), and Buchloe Obs. (Jan. 3.74p2)
0031P 31P/Schwassmann-Wachmann 2 from McCarthy Obs. (Dec. 24.19p1) and Spacewatch 0.9m (Jan. 4.10-16p3)
0030P 30P/Reinmuth 1 from Rodeno Obs. (Jan. 1.98-00p3), Vicksburg Obs. (Jan. 2.16-18p3 & 3.15-18p3), San Vito Obs. (Jan. 2.91-93p3), La Vara Obs. (Jan. 3.93-94p3), Buchloe Obs. (Jan. 4.83p3), and Mt. Tuffley Obs. (Jan. 4.91p3)
0029P 29P/Schwassmann-Wachmann 1 from Geisei Obs. (Dec. 16.71p1, 20.68p1 & 26.69p1), Moriyama Obs. (Dec. 29.65p2), Ageo Obs. (Dec. 30.66-68p2), Montcabre Obs. (Dec. 31.05p2), Rodeno Obs. (Jan. 2.05-07p3), and Chante-Perdrix Obs. (Jan. 2.18-19p2 & 2.23p1)
0022P 22P/Kopff from Geisei Obs. (Dec. 11.41p1), RAS Mayhill (Dec. 18.21p3), Vicksburg Obs. (Jan. 3.02-04p3), Buchloe Obs. (Jan. 4.79p3), and Nazaret Obs. (Jan. 4.80-81p2)

MPEC 2010-A19 - "15:43 UT" - Comet P/2009 Y2 (Kowalski)

PK09Y020 P/2009 Y2 (Kowalski) (q=2.339 AU, Q=10.539 AU, TP=2010 Mar. 30.715 TT) from Montcabre Obs. (Jan. 1.78p1 & 1.85p1) and Buchloe Obs. (Jan. 3.77p3)

MPEC 2010-A18 - "15:36 UT" - Comet C/2009 Y1 (Catalina)

CK09Y010 C/2009 Y1 (Catalina) (i=107.3°, q=2.551 AU, TP=2011 Jan. 28.283 TT) from Geisei Obs. (Dec. 23.72p2 & 26.77-78p2) and Moriyama Obs. (Dec. 29.74-75p2)

MPEC 2010-A17 - "15:30 UT" - Comet C/2009 W2 (Boattini)

CK09W020 C/2009 W2 (Boattini) (i=164.5°, q=6.907 AU, TP=2010 May 2.3806 TT) from Remanzacco Obs. (Dec. 7.94p2), Geisei Obs. (Dec. 23.63p1), and Buchloe Obs. (Jan. 4.82p3)

<< DOU on 6 Jan. '10 >> MPEC 2010-A16 - "07:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K09X00O 2009 XO (arc=27 days, H=20.3 ~295m) from ARO Westfield (Jan. 3.43-48p8) and Spacewatch 1.8m (Jan. 5.41-42p3)
Observations of recently (no longer) risk-listed objects
K09Y06S 2009 YS6 (i=148.3°, q=1.677 AU, Q=67.256 AU, arc=19 days, H=14.1 ~5.13 km) from Spacewatch 1.8m (Jan. 5.24p2)
K09Y00G 2009 YG (arc=19 days, H=18.5 ~676m) from ARO Westfield (Jan. 3.45-46p4) and Spacewatch 1.8m (Jan. 5.51-52p3)
K09X06T 2009 XT6 (arc=24 days, H=20.2 ~309m) from ARO Westfield (Jan. 3.27-28p3), Spacewatch 1.8m (Jan. 5.34-35p2 & 6.21-22p3), and MRO (Jan. 6.27-28p3)
K09X02F 2009 XF2 (arc=23 days, H=20.0 ~339m) from ARO Westfield (Jan. 3.18-19p3)
K09X02C 2009 XC2 (Q=4.183 AU, arc=24 days, H=17.1 ~1.29 km) from ARO Westfield (Jan. 3.41-43p3)
Observations of small asteroids (H>22.0)
K09Y00F 2009 YF (arc=17 days, H=24.7 ~39m) from ARO Westfield (Jan. 3.15-17p3)
K09V00T 2009 VT (arc=59 days, H=22.2 ~123m) from Spacewatch 1.8m (Jan. 6.10-11p5)
K09T10F 2009 TF10 (arc=83 days, H=22.1 ~129m) from Spacewatch 1.8m (Jan. 6.14-15p3)
Observations of other objects
K09Y06U 2009 YU6 (arc=17 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 5.25-26p3 & 6.22-23p3)
K09X02R 2009 XR2 (arc=22 days, H=19.1 ~513m) from ARO Westfield (Jan. 3.22-24p6)
K09X02B 2009 XB2 (arc=23 days, H=20.6 ~257m) from ARO Westfield (Jan. 3.34-36p3)
K09X00V 2009 XV (Q=4.341 AU, arc=28 days, H=21.0 ~214m) from ARO Westfield (Jan. 3.22-23p3) and MRO (Jan. 6.24-26p3)
K09WD9M 2009 WM139 (arc=174 days, H=18.6 ~645m) from ARO Westfield (Jan. 3.10p3)
K09WA4F 2009 WF104 (Q=5.098 AU, arc=41 days, H=16.9 ~1.41 km) from ARO Westfield (Jan. 3.10-11p3)
K09W26C 2009 WC26 (arc=42 days, H=17.3 ~1.17 km) from ARO Westfield (Jan. 3.14p3)
K09W25W 2009 WW25 (arc=108 days, H=20.7 ~245m) from ARO Westfield (Jan. 3.11-12p3)
K09W06K 2009 WK6 (arc=48 days, H=19.2 ~490m) from Spacewatch 0.9m (Jan. 4.18p1 & 4.23p1)
K09W00F 2009 WF (arc=49 days, H=19.9 ~355m) from ARO Westfield (Jan. 3.16-18p5)
K09V24O 2009 VO24 (arc=54 days, H=19.7 ~389m) from ARO Westfield (Jan. 3.03-04p3)
K09U18V 2009 UV18 (Q=5.187 AU, arc=2 opp, H=15.7 ~2.45 km, q=1.167 AU) from ARO Westfield (Jan. 3.47-48p4)
K09SA3M 2009 SM103 (Q=4.413 AU, arc=100 days, H=16.8 ~1.48 km) from ARO Westfield (Jan. 3.05-06p2)
K09R00N 2009 RN (Q=4.583 AU, arc=114 days, H=20.0 ~339m) from ARO Westfield (Jan. 3.26-27p3)
K09Q09J 2009 QJ9 (Q=4.398 AU, arc=137 days, H=19.4 ~446m) from Hills/RAS Moorook (Jan. 5.53-56p3)
K09M06X 2009 MX6 (arc=193 days, H=19.2 ~490m) from ARO Westfield (Jan. 3.14-15p3)
K07H00Z 2007 HZ (arc=3 opp, H=20.2 ~309m) from ARO Westfield (Jan. 3.28-29p3)
K06Y13T 2006 YT13 (i=38.2°, arc=3 opp, H=18.3 ~741m) from ARO Westfield (Jan. 3.44-45p3)
K06W02Y 2006 WY2 (arc=4 opp, H=18.5 ~676m) from ARO Westfield (Jan. 3.12-13p4)
K06U00R 2006 UR (arc=2 opp, H=19.4 ~446m) from ARO Westfield (Jan. 3.32-33p4)
K06K37Z 2006 KZ37 (arc=3 opp, H=19.1 ~513m) from ARO Westfield (Jan. 3.21-22p3) and Spacewatch 0.9m (Jan. 4.17-22p3)
K05Q00L 2005 QL (arc=2 opp, H=18.7 ~616m) from Spacewatch 0.9m (Jan. 4.31-35p2)
K05M00C 2005 MC (Q=4.167 AU, arc=3 opp, H=16.5 ~1.70 km) from ARO Westfield (Jan. 3.38-39p5)
K04X50D 2004 XD50 (arc=2 opp, H=18.5 ~676m) from ARO Westfield (Jan. 3.36-37p5)
K04X06E 2004 XE6 (arc=2 opp, H=19.5 ~426m) from Spacewatch 1.8m (Jan. 6.18-19p3)
K03YB8L 2003 YL118 (arc=2 opp, H=21.6 ~162m) from CSS (Jan. 6.19-22p8), MRO (Jan. 6.21-23p4), and Grasslands Obs. (Jan. 6.22p3)
K03C01R 2003 CR1 (arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (Jan. 5.47-48p3)
K02Y02N 2002 YN2 (i=50.3°, arc=5 opp, H=18.5 ~676m) from ARO Westfield (Jan. 3.33-34p3)
K02X14N 2002 XN14 (arc=2 opp, H=20.2 ~309m) from ARO Westfield (Jan. 3.20-21p3)
K02W00P 2002 WP (arc=3 opp, H=18.4 ~708m) from LINEAR (Jan. 5.14-21p4)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from ARO Westfield (Jan. 3.18-19p5)
K01R08E 2001 RE8 (arc=3 opp, H=18.8 ~589m) from Spacewatch 0.9m (Jan. 5.11p1 & 5.17p1)
K01B10E 2001 BE10 (arc=3 opp, H=19.1 ~513m) from ARO Westfield (Jan. 3.44-45p3)
K00O08G 2000 OG8 (Q=4.115 AU, arc=3 opp, H=17.7 ~977m) from Spacewatch 0.9m (Jan. 5.24-27p2)
J94C00B 1994 CB (arc=3 opp, H=21.0 ~214m) from ARO Westfield (Jan. 3.39-41p3)
M8587 228587 2002 AP7 from Spacewatch 0.9m (Jan. 4.19p1)
M2008 222008 1998 QQ63 from Spacewatch 0.9m (Jan. 5.24-27p2)
G3692 163692 2003 CY18 from Spacewatch 0.9m (Jan. 4.11-16p3)
A3067 103067 1999 XA143 from Spacewatch 0.9m (Jan. 5.41-44p3)
25143 25143 Itokawa (1998 SF36) from Spacewatch 0.9m (Jan. 5.17p1)
04015 4015 Wilson-Harrington (1979 VA) from Vicksburg Obs. (Jan. 3.11-13p3)

Observers on 6 January '10

A total of 45 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 13 in MPEC 2010-A20 -- C/2009 U3, C/2009 R1, P/2009 O3, C/2008 P1, C/2007 N3, C/2006 S3, C/2005 L3, 219P, 118P, 81P, 74P, 43P, 29P
`J24`	Altamira Obs. in Spain, 4 in MPEC 2010-A20 -- C/2007 Q3, C/2007 N3, 118P, 81P
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 33 in MPECs 2010-A16, 2010-A22 & 2010-A23 -- 2010 AF, 2010 AE, 2009 YG, 2009 YF, 2009 XV, 2009 XT6, 2009 XR2, 2009 XO, 2009 XF2, 2009 XC2, 2009 XB2, 2009 WW25, 2009 WM139, 2009 WF104, 2009 WF, 2009 WC26, 2009 VO24, 2009 UV18, 2009 SM103, 2009 RN, 2009 MX6, 2007 HZ, 2006 YT13, 2006 WY2, 2006 UR, 2006 KZ37, 2005 MC, 2004 XD50, 2002 YN2, 2002 XN14, 2002 LV, 2001 BE10, 1994 CB
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2010-A20 -- C/2007 Q3, 203P, 81P
`B96`	Brixiis Obs. in Belgium, 1 in MPEC 2010-A20 -- 217P
`215`	Buchloe Obs. in Germany, 10 in MPECs 2010-A17, 2010-A19 & 2010-A20 -- P/2009 Y2, C/2009 W2, P/2009 O3, C/2006 S3, 217P, 118P, 68P, 43P, 30P, 22P
`235`	CAST Obs. in Italy, 3 in MPEC 2010-A20 -- C/2007 N3, 137P, 118P
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2010-A20 -- C/2009 U3, P/2009 T2, C/2007 N3
`703`	Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2010-A16 & 2010-A23 -- 2010 AF, 2003 YL118
`A77`	Chante-Perdrix Obs. in France, 5 in MPEC 2010-A20 -- P/2009 T2, C/2007 Q3, 217P, 81P, 29P
`106`	Crni Vrh Obs. in Slovenia, 1 in MPEC 2010-A20 -- 203P
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2010-A20 -- C/2007 N3
`E85`	Farm Cove Obs. in New Zealand, 1 in MPEC 2010-A20 -- C/2009 F6
`372`	Geisei Obs. in Japan, 9 in MPECs 2010-A17, 2010-A18 & 2010-A20 -- C/2009 Y1, C/2009 W2, C/2007 Q3, C/2006 W3, C/2006 OF2, 232P, 217P, 29P, 22P
`683`	Goodricke-Pigott Obs. in Arizona, 2 in MPEC 2010-A20 -- 217P, 118P
`651`	Grasslands Obs. in Arizona, 2 in MPECs 2010-A16 & 2010-A22 -- 2010 AE, 2003 YL118
`J95`	Great Shefford Obs. in England, 1 in MPEC 2010-A23 -- 2010 AF
`415`	Kambah Obs. in the Australian Capital Territory, 3 in MPEC 2010-A20 -- C/2009 F6, C/2007 M2, C/2007 G1
`585`	Kiev Comet Station in the Ukraine, 3 in MPEC 2010-A20 -- P/2009 Q4, 232P, 203P
`D95`	Kurihara Obs., 2 in MPEC 2010-A20 -- 217P, 118P
`704`	LINEAR in New Mexico, 2 in MPECs 2010-A16 & 2010-A20 -- C/2009 U3, 2002 WP
`212`	La Dehesilla Obs. in Spain, 2 in MPEC 2010-A20 -- P/2009 T2, 203P
`J38`	La Vara Obs. in Spain, 4 in MPEC 2010-A20 -- 217P, 203P, 118P, 30P
`844`	Los Molinos Obs. in Uruguay, 1 in MPEC 2010-A20 -- C/2007 G1
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2010-A16 & 2010-A22 -- 2010 AE, 2009 XV, 2009 XT6, 2003 YL118
`B82`	Maidbronn Obs. in Germany, 3 in MPEC 2010-A20 -- C/2009 U3, C/2008 P1, 232P
`C10`	Maisoncelles Obs. in France, 1 in MPEC 2010-A20 -- 68P
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-A21 -- 2008 EB32
`932`	McCarthy Obs. in Connecticut, 1 in MPEC 2010-A20 -- 31P
`213`	Montcabre Obs. in Spain, 6 in MPECs 2010-A19 & 2010-A20 -- P/2009 Y2, P/2009 Q4, C/2007 Q3, 217P, 81P, 29P
`945`	Monte Deva Obs. in Spain, 2 in MPEC 2010-A20 -- 217P, 118P
`900`	Moriyama Obs. in Japan, 14 in MPECs 2010-A18, 2010-A20, 2010-A22 & 2010-A23 -- 2010 AF, 2010 AE, C/2009 Y1, P/2009 T2, P/2009 Q4, C/2008 P1, C/2007 Q3, C/2005 L3, 232P, 137P, 127P, 81P, 43P, 29P
`J93`	Mt. Tuffley Obs. in England, 1 in MPEC 2010-A20 -- 30P
`J47`	Nazaret Obs. in Spain, 3 in MPEC 2010-A20 -- 127P, 81P, 22P
`583`	Odessa-Mayaki Obs., 2 in MPEC 2010-A20 -- C/2007 Q3, 81P
`H06`	RAS Obs. Mayhill in New Mexico, 5 in MPEC 2010-A20 -- C/2008 N1, C/2007 D1, C/2005 L3, 203P, 22P
`D90`	RAS Obs. Moorook in South Australia, 1 in MPEC 2010-A20 -- C/2007 M2
D90`	Kevin Hills in England via RAS Obs. Moorook in South Australia, 2 in MPECs 2010-A16 & 2010-A22 -- 2010 AE, 2009 QJ9
`473`	Remanzacco Obs. in Italy, 2 in MPECs 2010-A17 & 2010-A20 -- C/2009 W2, P/2009 T2
`939`	Rodeno Obs. in Spain, 9 in MPEC 2010-A20 -- P/2009 Q4, C/2007 Q3, C/2005 L3, 217P, 203P, 118P, 81P, 30P, 29P
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2010-A20 -- C/2007 D1
`233`	San Vito Obs. in Italy, 1 in MPEC 2010-A20 -- 30P
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2010-A20 -- 74P
`691`	Spacewatch 0.9m telescope in Arizona, 12 in MPECs 2010-A16, 2010-A20 & 2010-A22 -- 2010 AE, 2009 WK6, 2006 KZ37, 2005 QL, 2001 RE8, 2000 OG8, 25143, 228587, 222008, 163692, 103067, 31P
`291`	Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2010-A16 & 2010-A22 -- 2010 AE, 2009 YU6, 2009 YS6, 2009 YG, 2009 XT6, 2009 XO, 2009 VT, 2009 TF10, 2004 XE6, 2003 CR1
`H47`	Vicksburg Obs. in Mississippi, 8 in MPECs 2010-A16 & 2010-A20 -- C/2009 U3, P/2009 T2, P/2009 Q4, C/2007 Q3, 4015, 81P, 30P, 22P

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 6 January '10

**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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
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

2009 XO	JPL Sentry	1529	2038	1	9.5e-08	-4.52	-4.52	0	JPL: "Analysis based on 148 observations spanning 27.268 days (2009-Dec-09.152 to 2010-Jan-05.42037)." Diameter approximately 0.290 km. from mean, weighted H=20.3.
2009 XO	NEODyS	1529	2038-2068	2	1.03e-07	-4.49	-4.51	0	NEODyS: "Based on 148 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/05.421."

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 6 January '10

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

2208	Grabbed MPEC 2010-A23 - 2010 AF - see above
1834	Grabbed MPEC 2010-A22 - 2010 AE - see above
1800	Grabbed MPEC 2010-A21 - 2008 EB32 - see above
1731	Grabbed MPEC 2010-A17 - Comet C/2009 W2 (Boattini) - see above Grabbed MPEC 2010-A18 - Comet C/2009 Y1 (Catalina) - see above Grabbed MPEC 2010-A19 - Comet P/2009 Y2 (Kowalski) - see above Grabbed MPEC 2010-A20 - Observations of Comets - see above
1529	Noted that JPL Sentry has updated its 2009 XO risk assessment - see above Noted that NEODyS has updated its 2009 XO risk assessment - see above Grabbed MPEC 2010-A16 - Daily Orbit Update - see above

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