2009-03-31 Tracking News

Contents on 31 March '09

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- four listings: 4 updated
- New MPECs -- ten MPECs
Observers -- 56 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
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.

Radar Astrometry on 31 March '09

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 2009 UTC when the database was dated 31 March

2008 SV11 from Goldstone DSS-14 70m antenna (March 31.03 velocity, 31.05 range & 31.08 range) - see links

NEOCP Activity on 31 March '09

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

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object 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 eight listings on the NEOCP at some point today.

New MPECs on 31 March '09

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-F104 time-stamped "06:12 UT" - Daily Orbit Update - see below
MPEC 2009-F105 time-stamped "14:01 UT" - Observations of Comets - see below
MPEC 2009-F106 time-stamped "14:43 UT" - 2004 HC2 - see below
MPEC 2009-F107 time-stamped "19:20 UT" - Comet C/2009 B2 (LINEAR) - see below
MPEC 2009-F108 time-stamped "19:24 UT" - Comet C/2009 E1 (Itagaki) - see below
MPEC 2009-F109 time-stamped "19:28 UT" - Comet C/2009 F1 (Larson) - see below
MPEC 2009-F110 time-stamped "19:31 UT" - Comet C/2009 F2 (McNaught) - see below
MPEC 2009-F111 time-stamped "19:35 UT" - Comet C/2009 F4 (McNaught) - see below
MPEC 2009-F112 time-stamped "19:37 UT" - 2005 EJ94 - see below
MPEC 2009-F113 time-stamped "19:46 UT" - Comet C/2009 F5 (McNaught)

MPEC 2009-F113 - "19:46 UT" - Comet C/2009 F5 (McNaught)

CK09F050 C/2009 F5 (McNaught) (i=85.9°, q=2.298 AU, TP=2008 Nov. 8.688 TT) from Auckland Obs. (March 27.41-42p3, 28.72p3 & 29.70p3), Los Campitos Obs. (March 28.30-31p3), Rio Cuarto Obs. (March 28.38p1), North Ryde Obs. (March 28.54-58p2 & 29.50-53p2), and Ageo Obs. (March 28.75p2)

MPEC 2009-F112 - "19:37 UT" - 2005 EJ94

K05E94J 2005 EJ94 (H=19.1 ~513m) from the Catalina Sky Survey (CSS) (March 16.28-30p4, 31.24-26p4 & 31.35-38p3), Sabino Canyon Obs. (March 31.36-38p2), and Mt. John Obs. (March 31.60-61p4)

MPEC 2009-F111 - "19:35 UT" - Comet C/2009 F4 (McNaught)

CK09F040 C/2009 F4 (McNaught) (i=79.2°, q=5.444 AU, TP=2011 Dec. 31.943 TT) from Ageo Obs. (March 26.73-74p2), Farm Cove Obs. (March 28.52-53p3), and North Ryde Obs. (March 28.62p1 & 28.66p1)

MPEC 2009-F110 - "19:31 UT" - Comet C/2009 F2 (McNaught)

CK09F020 C/2009 F2 (McNaught) (i=59.5°, q=5.849 AU, TP=2009 Nov. 27.183 TT) from Los Campitos Obs. (March 28.09-10p2 & 28.17p1), Rio Cuarto Obs. (March 28.20-22p3), and North Ryde Obs. (March 28.46p1, 28.51p1 & 29.47p1)

MPEC 2009-F109 - "19:28 UT" - Comet C/2009 F1 (Larson)

CK09F010 C/2009 F1 (Larson) (i=171.4°, q=1.837 AU, TP=2009 June 24.759 TT) from the Mt. Lemmon Survey (MLS) (March 27.37-40p4), Kiev Comet Station (March 28.00p3), and Engelhardt Obs. Zelenchukskaya Station (March 29.89-90p3)

MPEC 2009-F108 - "19:24 UT" - Comet C/2009 E1 (Itagaki)

CK09E010 C/2009 E1 (Itagaki) (i=127.4°, q=0.600 AU, Q=77.472 AU, TP=2009 Apr. 7.929 TT) from Santa Maria de Montmagastrell Obs. (March 26.81-82p3), Cordell-Lorenz Obs. (March 27.04-06p2), and Ageo Obs. (March 28.43-44p3)

MPEC 2009-F107 - "19:20 UT" - Comet C/2009 B2 (LINEAR)

CK09B020 C/2009 B2 (LINEAR) (i=156.9°, q=2.328 AU, Q=81.714 AU, TP=2009 Mar. 7.4076 TT) from Hamamatsu-Yuto Obs. (March 28.59-61p3), Kiev Comet Station (March 28.97-98p4), Petit Jean Mtn. South Obs. (PJMSO) (March 30.29p6), and CSS (March 31.25-26p2)

MPEC 2009-F106 - "14:43 UT" - 2004 HC2

K04H02C 2004 HC2 (i=55.0°, H=19.4 ~446m) from CSS (March 30.42-44p3) and MLS (March 31.46-51p8)

MPEC 2009-F105 - "14:01 UT" - Observations of Comets

PK09F030 P/2009 F3 (LINEAR) from RAS Obs. Mayhill (March 22.47-48p2) and Ageo Obs. (March 26.78p2)
PK09B010 P/2009 B1 (Boattini) from Schiaparelli Obs. (March 14.90p1) and MLS (March 28.16-17p4 & 29.12-13p3)
PK08Y020 P/2008 Y2 (Gibbs) from Schiaparelli Obs. (March 20.87p1 & 20.94p1), LINEAR (March 29.24-29p5), and PJMSO (March 30.27p2)
CK08T020 C/2008 T2 (Cardinal) from Hiratsuka Obs. (March 15.44p3), Cantabria Obs. (March 19.88-91p3), La Vara Obs. (March 25.85p3), Monte Deva Obs. (March 25.91-93p5), Santa Maria de M. Obs. (March 26.89-90p3), Carmelita Obs. (March 27.79-80p3), Chante-Perdrix Obs. (March 27.87p1), Maidbronn Obs. (March 28.81p3 & 30.81p4), JiangNanTianChi Obs. (March 29.50-52p3), Ingenio Obs. (March 29.92p4), and Mt. Tuffley Obs. (March 29.93-94p4)
CK08E010 C/2008 E1 (Catalina) from Moriyama Obs. (March 20.47-48p2) and LINEAR (March 25.11-16p5)
CK07Q030 C/2007 Q3 (Siding Spring) from Hiratsuka Obs. (March 15.42p3), Santa Maria de M. Obs. (March 26.80p3), Auckland Obs. (March 29.33p3), and Grove Creek Obs. (March 29.39p3)
CK07N030 C/2007 N3 (Lulin) from Hiratsuka Obs. (March 15.47p3), Cantabria Obs. (March 19.88-91p3), Schiaparelli Obs. (March 20.86-94p3), Hradec Kralove Obs. (March 21.77-78p5), Gualba Obs. (March 21.87p2, 23.81p2 & 25.80p2), Nazaret Obs. (March 25.89-90p3 & 26.94-95p5), La Vara Obs. (March 25.92p3), Monte Deva Obs. (March 25.98-99p5 & 30.93-94p5), Hamamatsu-Yuto Obs. (March 26.45-46p4, 27.45-46p3, 28.50-51p6 & 30.50p5), Stammersdorf Obs. (March 26.79-81p5), Montcabre Obs. (March 26.80-81p3), Skylive Obs. (March 26.86p4 & 27.82-83p3), Carmelita Obs. (March 26.88p3 & 27.82p3), Santa Maria de M. Obs. (March 26.90-91p3), Cordell-Lorenz Obs. (March 27.12-14p2 & 30.15-18p3), LINEAR (March 28.14-16p3), Kiev Comet Station (March 28.90-94p5), Auckland Obs. (March 29.33p3), JiangNanTianChi Obs. (March 29.53-54p4), Ingenio Obs. (March 29.93-94p4), Thompsonville Obs. (March 30.10-14p6), and PJMSO (March 30.16-17p7)
CK07G010 C/2007 G1 (LINEAR) from Los Campitos Obs. (March 21.12-13p3), North Ryde Obs. (March 28.39-42p2), Auckland Obs. (March 29.36p3), and Grove Creek Obs. (March 29.37-38p4)
CK07B020 C/2007 B2 (Skiff) from Kambah Obs. (March 28.73-74p2) and Auckland Obs. (March 28.73p3 & 29.68p3)
CK06U060 C/2006 U6 (Spacewatch) from LINEAR (March 25.24-29p4) and CSS (March 31.24-27p4)
CK06Q010 C/2006 Q1 (McNaught) from La Vara Obs. (March 26.02p3), Malaga Obs. (March 26.07-09p2 & 26.14p1), Monte Deva Obs. (March 26.10p5 & 31.03-04p5), Hamamatsu-Yuto Obs. (March 26.77-79p5 & 27.82p3), Auckland Obs. (March 29.72p3), and CSS (March 30.41-44p4)
CK06O02F C/2006 OF2 (Broughton) from Ageo Obs. (March 7.42p2), Hiratsuka Obs. (March 15.46p3), Cantabria Obs. (March 19.88-91p3), Hamamatsu-Yuto Obs. (March 25.57-58p3, 26.47-48p3 & 30.51-52p5), La Vara Obs. (March 25.89-90p3), Monte Deva Obs. (March 25.94-97p5 & 30.95-97p5), Carmelita Obs. (March 27.80-81p3), Skylive Obs. (March 27.80-81p4), Ingenio Obs. (March 29.92-93p4), Thompsonville Obs. (March 30.14-18p6), PJMSO (March 30.15-16p6), and Maidbronn Obs. (March 30.83-84p3)
CK05L030 C/2005 L3 (McNaught) from Nazaret Obs. (March 25.06p2), Montcabre Obs. (March 25.89-93p3), La Vara Obs. (March 26.00-01p3), Monte Deva Obs. (March 26.09p5 & 31.02-03p5), Hamamatsu-Yuto Obs. (March 27.59-60p3), and Maidbronn Obs. (March 31.13-14p3)
0211P 211P/Hill from Schiaparelli Obs. (March 20.84p1 & 20.89p1) and LINEAR (March 28.12-16p4)
0210P 210P/Christensen from Vitebsk Obs. (March 25.99-00p3), Sierra Stars Obs. (March 27.43-46p2), Goodricke-Pigott Obs. (March 28.37-38p2), and MLS (March 28.45-47p4)
0201P 201P/LONEOS from Lumezzane Obs. (March 18.99p1) and Vitebsk Obs. (March 25.87p1)
0195P 195P/Hill from Buchloe Obs. (Feb. 28.89p3) and the Spacewatch 1.8m telescope (March 26.14-16p3)
0188P 188P/LINEAR-Mueller from Schiaparelli Obs. (March 14.94p1) and Vitebsk Obs. (March 25.81-84p3)
0144P 144P/Kushida from Hiratsuka Obs. (March 15.45p3), Ageo Obs. (March 15.54-55p3), Gualba Obs. (March 25.80-81p2), La Vara Obs. (March 25.90-91p3), Montcabre Obs. (March 26.82-83p3), Malaga Obs. (March 26.99-00p3), Skylive Obs. (March 27.82p3), Carmelita Obs. (March 27.82-83p3), LINEAR (March 29.18-21p4), Mt. Tuffley Obs. (March 29.96p3), Ingenio Obs. (March 29.96p3), PJMSO (March 30.17-18p6), and Maidbronn Obs. (March 30.82-83p3)
0143P 143P/Kowal-Mrkos from Schiaparelli Obs. (March 21.95p1 & 22.03p1), LINEAR (March 29.30-35p5), and PJMSO (March 30.29-34p5)
0116P 116P/Wild 4 from Nazaret Obs. (March 25.91p1, 26.96-97p4 & 28.97p1), Monte Deva Obs. (March 26.05-07p5), Carmelita Obs. (March 26.92-93p3 & 27.86-87p3), Ingenio Obs. (March 28.03p3), Auckland Obs. (March 29.41p3), and PJMSO (March 30.23-26p5)
0088P 88P/Howell from Ageo Obs. (March 17.77-78p2) and the Spacewatch 0.9m telescope (March 27.23-27p3 & 31.21-24p3)
0077P 77P/Longmore from Hradec Kralove Obs. (March 22.02-03p5), GiaGa Obs. (March 25.95p1 & 26.02p1), La Vara Obs. (March 25.99-00p3), and Auckland Obs. (March 29.44p3)
0074P 74P/Smirnova-Chernykh from Ageo Obs. (March 15.62-63p2), Nazaret Obs. (March 25.93-94p3), La Vara Obs. (March 25.94-95p3), PJMSO (March 30.20-23p5), and Maidbronn Obs. (March 30.97-98p3)
0067P 67P/Churyumov-Gerasimenko from La Vara Obs. (March 25.83p3), Nazaret Obs. (March 25.86-87p3), and Santa Maria de M. Obs. (March 26.83-84p3)
0065P 65P/Gunn from Nazaret Obs. (March 25.02-04p3), GiaGa Obs. (March 25.97p1 & 26.03p1), Monte Deva Obs. (March 26.07-08p5 & 31.01p5), Auckland Obs. (March 27.42-43p3 & 29.45p3), and Los Campitos Obs. (March 28.24p3)
0029P 29P/Schwassmann-Wachmann 1 from Cantabria Obs. (March 19.89-92p3), Gualba Obs. (March 21.86-87p2, 23.80-81p2, 25.80p2 & 26.79-81p2), Nazaret Obs. (March 25.89p2 & 26.92-94p4), La Vara Obs. (March 25.93-94p3), Malaga Obs. (March 26.84-85p3), Montcabre Obs. (March 26.85-86p3), Carmelita Obs. (March 26.89-91p3 & 27.84-85p3), Maidbronn Obs. (March 29.88-90p3 & 30.87-88p3), and PJMSO (March 30.18-19p3)
0022P 22P/Kopff from Los Campitos Obs. (March 28.35p3) and Auckland Obs. (March 29.69p3)
0019P 19P/Borrelly from Schiaparelli Obs. (March 21.98p1 & 22.04p1), Vitebsk Obs. (March 25.97-98p3), and Malaga Obs. (March 26.04p3)
0017P 17P/Holmes from Bohyunsan Obs. (Jan. 21.52-54p2 & 21.60p1) and Nazaret Obs. (March 25.99p3)

<< DOU on 31 Mar. '09 >> MPEC 2009-F104 - "06:12 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K09F01G 2009 FG1 (i=70.1°, arc=14 days, H=18.7 ~616m) from Guidestar Obs. (March 30.85-88p3)
K09F00S 2009 FS (small asteroid, arc=10 days, H=24.2 ~49m) from Great Shefford Obs. (March 26.88-90p3)
K09D42Z 2009 DZ42 (arc=33 days, H=19.7 ~389m) from Spacewatch 1.8m (March 31.15-17p3)
Observations of small asteroids (H>22.0)
K09F32O 2009 FO32 (arc=2 days, H=25.7 ~25m) from the Siding Spring Survey (SSS) (March 30.41-44p6)
K09F32N 2009 FN32 (arc=2 days, H=22.1 ~129m) from Astronomical Research Obs. (ARO) (March 30.33-34p3)
K09F25W 2009 FW25 (arc=6 days, H=23.4 ~71m) from ARO (March 30.11-12p3)
Observations of other objects
K09F28P 2009 FP28 (arc=4 days, H=20.8 ~234m) from SSS (March 28.53p1 & 29.47p1)
K09F28O 2009 FO28 (arc=5 days, H=21.0 ~214m) from PJMSO (March 30.34p7)
K09F19F 2009 FF19 (arc=10 days, H=21.3 ~186m) from Spacewatch 1.8m (March 31.19-20p3)
K09F00T 2009 FT (arc=13 days, H=19.0 ~537m) from Guidestar Obs. (March 30.82-84p3)
K09F00A 2009 FA (i=42.3°, Q=4.056 AU, arc=14 days, H=18.6 ~645m) from PJMSO (March 30.28p7) and Hamamatsu-Yuto Obs. (March 30.46-48p7 & 30.53-54p6)
K09E02O 2009 EO2 (arc=24 days, H=19.6 ~407m) from SSS (March 29.46p2)
K09D01L 2009 DL1 (arc=40 days, H=18.9 ~562m) from LINEAR (March 30.30-35p5) and Hamamatsu-Yuto Obs. (March 30.61-64p7)
K09D01D 2009 DD1 (arc=39 days, H=20.3 ~295m) from ARO (March 30.13-14p3)
K09C02A 2009 CA2 (arc=55 days, H=18.8 ~589m) from MLS (March 30.48-50p3)
K09C01Q 2009 CQ1 (arc=69 days, H=20.6 ~257m) from ARO (March 30.16p3)
K08W60L 2008 WL60 (arc=127 days, H=18.0 ~851m) from Hamamatsu-Yuto Obs. (March 30.75-78p11)
K08SF0W 2008 SW150 (arc=2 opp, H=19.6 ~407m) from MLS (March 30.35-37p4)
K08S11V 2008 SV11 (Q=4.511 AU, arc=2 opp, H=18.4 ~708m) from Great Shefford Obs. (March 30.05-08p5), CSS (March 30.15-17p3), and Siegen Obs. (March 30.90-91p3)
K07B02T 2007 BT2 (arc=3 opp, H=17.2 ~1.23 km) from Hamamatsu-Yuto Obs. (March 30.55-60p9)
K06G02Q 2006 GQ2 (arc=3 opp, H=17.9 ~891m) from LINEAR (March 30.36-40p5) and Hamamatsu-Yuto Obs. (March 30.69-72p5)
K05YG5S 2005 YS165 (arc=2 opp, H=17.5 ~1.07 km) from CSS (March 30.37-40p4)
K05S19G 2005 SG19 (Q=4.171 AU, arc=2 opp, H=16.7 ~1.55 km) from LINEAR (March 30.35-40p5)
K04V00C 2004 VC (i=39.1°, arc=3 opp, H=18.7 ~616m) from Hamamatsu-Yuto Obs. (March 30.81p2)
I4990 184990 2006 KE89 from CSS (March 30.46-48p4)
E3651 143651 2003 QO104 from CSS (March 30.24-27p4)
D8883 138883 2000 YL29 from MLS (March 30.39-42p4)
D7925 137925 2000 BJ19 from Sogel Obs. (March 30.84-86p3)
D6617 136617 1994 CC from SSS (March 16.75-77p4 & 27.77p1)
89355 89355 2001 VS78 from CSS (March 30.15-17p4)
14402 14402 1991 DB from CSS (March 30.46-48p3)
08176 8176 1991 WA from CSS (March 25.34-35p3)
05604 5604 1992 FE from LINEAR (March 30.24-29p5)
01036 1036 Ganymed (1924 TD) from Mt. Tuffley Obs. (March 29.83-84p3) and LINEAR (March 30.19-23p4)

Observers on 31 March '09

A total of 56 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 8 in MPECs 2009-F105, 2009-F108, 2009-F111 & 2009-F113 -- C/2009 F5, C/2009 F4, P/2009 F3, C/2009 E1, C/2006 OF2, 144P, 88P, 74P
`H55`	Astronomical Research Obs. (ARO) in Illinois, 4 in MPEC 2009-F104 -- 2009 FW25, 2009 FN32, 2009 DD1, 2009 CQ1
`467`	Auckland Obs. in New Zealand, 10 in MPECs 2009-F105 & 2009-F113 -- C/2009 F5, C/2007 Q3, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 Q1, 116P, 77P, 65P, 22P
`344`	Bohyunsan Obs. in South Korea, 1 in MPEC 2009-F105 -- 17P
`215`	Buchloe Obs. in Germany, 1 in MPEC 2009-F105 -- 195P
`J96`	Cantabria Obs. in Spain, 4 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 29P
`B20`	Carmelita Obs. in Spain, 6 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 144P, 116P, 29P
`703`	Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2009-F104, 2009-F105, 2009-F106, 2009-F107 & 2009-F112 -- C/2009 B2, 2008 SV11, C/2006 U6, C/2006 Q1, 2005 YS165, 2005 EJ94, 2004 HC2, 89355, 184990, 14402, 143651, 8176
`A77`	Chante-Perdrix Obs. in France, 1 in MPEC 2009-F105 -- C/2008 T2
`850`	Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-F105 & 2009-F108 -- C/2009 E1, C/2007 N3
`114`	Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-F109 -- C/2009 F1
`E85`	Farm Cove Obs. in New Zealand, 1 in MPEC 2009-F111 -- C/2009 F4
`203`	GiaGa Obs. in Italy, 2 in MPEC 2009-F105 -- 77P, 65P
`253`	Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2008 SV11
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-F105 -- 210P
`J95`	Great Shefford Obs. in England, 2 in MPEC 2009-F104 -- 2009 FS, 2008 SV11
`E16`	Grove Creek Obs. in New South Wales, 2 in MPEC 2009-F105 -- C/2007 Q3, C/2007 G1
`442`	Gualba Obs. in Spain, 3 in MPEC 2009-F105 -- C/2007 N3, 144P, 29P
`A17`	Guidestar Obs. in Germany, 2 in MPEC 2009-F104 -- 2009 FT, 2009 FG1
`379`	Hamamatsu-Yuto Obs. in Japan, 11 in MPECs 2009-F104, 2009-F105 & 2009-F107 -- 2009 FA, 2009 DL1, C/2009 B2, 2008 WL60, C/2007 N3, 2007 BT2, C/2006 Q1, C/2006 OF2, 2006 GQ2, C/2005 L3, 2004 VC
`D88`	Hiratsuka Obs. in Japan, 5 in MPEC 2009-F105 -- C/2008 T2, C/2007 Q3, C/2007 N3, C/2006 OF2, 144P
`048`	Hradec Kralove Obs. in the Czech Republic, 2 in MPEC 2009-F105 -- C/2007 N3, 77P
`J39`	Ingenio Obs. in the Canary Islands, 5 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 144P, 116P
`D32`	JiangNanTianChi Obs. in China, 2 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3
`415`	Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-F105 -- C/2007 B2
`585`	Kiev Comet Station in the Ukraine, 3 in MPECs 2009-F105, 2009-F107 & 2009-F109 -- C/2009 F1, C/2009 B2, C/2007 N3
`704`	LINEAR in New Mexico, 12 in MPECs 2009-F104 & 2009-F105 -- 2009 DL1, P/2008 Y2, C/2008 E1, C/2007 N3, C/2006 U6, 2006 GQ2, 2005 SG19, 5604, 1036, 211P, 144P, 143P
`J38`	La Vara Obs. in Spain, 10 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3, 144P, 77P, 74P, 67P, 29P
`I36`	Los Campitos Obs. in Argentina, 5 in MPECs 2009-F105, 2009-F110 & 2009-F113 -- C/2009 F5, C/2009 F2, C/2007 G1, 65P, 22P
`130`	Lumezzane Obs. in Italy, 1 in MPEC 2009-F105 -- 201P
`B82`	Maidbronn Obs. in Germany, 6 in MPEC 2009-F105 -- C/2008 T2, C/2006 OF2, C/2005 L3, 144P, 74P, 29P
`J40`	Malaga Obs. in Spain, 4 in MPEC 2009-F105 -- C/2006 Q1, 144P, 29P, 19P
`213`	Montcabre Obs. in Spain, 4 in MPEC 2009-F105 -- C/2007 N3, C/2005 L3, 144P, 29P
`945`	Monte Deva Obs. in Spain, 7 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3, 116P, 65P
`900`	Moriyama Obs. in Japan, 1 in MPEC 2009-F105 -- C/2008 E1
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2009-F112 -- 2005 EJ94
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2009-F104, 2009-F105, 2009-F106 & 2009-F109 -- C/2009 F1, 2009 CA2, P/2009 B1, 2008 SW150, 2004 HC2, 138883, 210P
`J93`	Mt. Tuffley Obs. in England, 3 in MPECs 2009-F104 & 2009-F105 -- C/2008 T2, 1036, 144P
`J47`	Nazaret Obs. in Spain, 8 in MPEC 2009-F105 -- C/2007 N3, C/2005 L3, 116P, 74P, 67P, 65P, 29P, 17P
`423`	North Ryde Obs. in New South Wales, 4 in MPECs 2009-F105, 2009-F110, 2009-F111 & 2009-F113 -- C/2009 F5, C/2009 F4, C/2009 F2, C/2007 G1
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPECs 2009-F104, 2009-F105 & 2009-F107 -- 2009 FO28, 2009 FA, C/2009 B2, P/2008 Y2, C/2007 N3, C/2006 OF2, 144P, 143P, 116P, 74P, 29P
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-F105 -- P/2009 F3
`I20`	Rio Cuarto Obs. in Argentina, 2 in MPECs 2009-F110 & 2009-F113 -- C/2009 F5, C/2009 F2
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-F112 -- 2005 EJ94
`B74`	Santa Maria de Montmagastrell Obs. in Spain, 5 in MPECs 2009-F105 & 2009-F108 -- C/2009 E1, C/2008 T2, C/2007 Q3, C/2007 N3, 67P
`204`	Schiaparelli Obs. in Italy, 7 in MPEC 2009-F105 -- P/2009 B1, P/2008 Y2, C/2007 N3, 211P, 188P, 143P, 19P
`E12`	Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2009-F104 -- 2009 FP28, 2009 FO32, 2009 EO2, 136617
`510`	Siegen Obs. in Germany, 1 in MPEC 2009-F104 -- 2008 SV11
`G68`	Sierra Stars Obs. in northern California, 1 in MPEC 2009-F105 -- 210P
`B40`	Skylive Obs. in Italy, 3 in MPEC 2009-F105 -- C/2007 N3, C/2006 OF2, 144P
`A20`	Sogel Obs. in Germany, 1 in MPEC 2009-F104 -- 137925
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-F105 -- 88P
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2009-F104 & 2009-F105 -- 2009 FF19, 2009 DZ42, 195P
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2009-F105 -- C/2007 N3
`H53`	Thompsonville Obs. in Illinois, 2 in MPEC 2009-F105 -- C/2007 N3, C/2006 OF2
`B42`	Vitebsk Obs. in Belarus, 4 in MPEC 2009-F105 -- 210P, 201P, 188P, 19P

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

Impact Risk Monitoring on 31 March '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 FP32	NEODyS	1322	2073-2090	8	2.45e-06	-6.99	-7.43	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2009/03/29.241 to 2009/03/30.317."

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 31 March '09

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

2009	Grabbed MPEC 2009-F106 - 2004 HC2 - see above Grabbed MPEC 2009-F107 - Comet C/2009 B2 (LINEAR) - see above Grabbed MPEC 2009-F108 - Comet C/2009 E1 (Itagaki) - see above Grabbed MPEC 2009-F109 - Comet C/2009 F1 (Larson) - see above Grabbed MPEC 2009-F110 - Comet C/2009 F2 (McNaught) - see above Grabbed MPEC 2009-F111 - Comet C/2009 F4 (McNaught) - see above Grabbed MPEC 2009-F112 - 2005 EJ94 - see above Grabbed MPEC 2009-F113 - Comet C/2009 F5 (McNaught) - see above Noted Radar Astrometry database update - see above
1436	Grabbed MPEC 2009-F105 - Observations of Comets - see above
1322	Noted that NEODyS has posted 2009 FP32 as an impact risk - see above Grabbed MPEC 2009-F104 - Daily Orbit Update - see above

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