23 Oct '07 Tracking News

Contents on 23 October '07

IAU Minor Planet Center
- NEOCP Activity -- eight listings: 3 new, 5 updated
- New MPECs -- fifteen MPECs
- Observers -- 56 observing facilities
Impact Risk Monitoring -- four objects reported
Chronology

Resources:

Consolidated Risk Tables - CRT page
Old & new CRT Archive
Ephemerides for risk-rated objects
Old News Archive & Small Objects Archive
The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 23 October '07

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

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and five updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of eleven 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 23 October '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been fifteen MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-U55 time-stamped "06:12 UT" - Daily Orbit Update - see below
MPEC 2007-U56 time-stamped "11:39 UT" - 2007 UO6 - see below
MPEC 2007-U57 time-stamped "11:42 UT" - 2007 UP6 - see below
MPEC 2007-U58 time-stamped "16:03 UT" - Comet P/2007 Q2 (Gilmore) - see below
MPEC 2007-U59 time-stamped "16:10 UT" - Comet C/2007 Q3 (Siding Spring) - see below
MPEC 2007-U60 time-stamped "16:15 UT" - Comet P/2007 R1 (Larson) - see below
MPEC 2007-U61 time-stamped "16:19 UT" - Comet P/2007 R2 (Gibbs) - see below
MPEC 2007-U62 time-stamped "16:22 UT" - Comet P/2007 R3 (Gibbs) - see below
MPEC 2007-U63 time-stamped "16:28 UT" - Comet P/2007 R4 (Garradd) - see below
MPEC 2007-U64 time-stamped "16:32 UT" - Comet P/2007 S1 (Zhao) - see below
MPEC 2007-U65 time-stamped "16:37 UT" - Comet C/2007 S2 (Lemmon) - see below
MPEC 2007-U66 time-stamped "16:43 UT" - Comet C/2007 T1 (McNaught) - see below
MPEC 2007-U67 time-stamped "16:48 UT" - Comet P/2007 T2 (Kowalski) - see below
MPEC 2007-U68 time-stamped "16:54 UT" - Comet P/2007 T4 (Gibbs) - see below
MPEC 2007-U69 time-stamped "17:15 UT" - Observations of Comets

MPEC 2007-U69 - "17:15 UT" - Observations of Comets

CK07O010 C/2007 O1 (LINEAR) from Ageo Obs. (Oct. 7.45p2) and LINEAR (Oct. 13.08-12p5)
CK07N030 C/2007 N3 (Lulin) from Junk Bond Obs. (Oct. 17.10-17p4) and LONEOS (Oct. 18.08-13p4)
PK07H010 P/2007 H1 (McNaught) from Ingenio Obs. (Oct. 15.96p3, 16.02p6 & 19.88-89p4), Nazaret Obs. (Oct. 16.93-97p3 & 20.92p3), Montcabre Obs. (Oct. 18.81p3), Monte Deva Obs. (Oct. 18.88-89p4 & 20.91-94p5), Linceo Obs. (Oct. 19.91-92p3), Moriyama Obs. (Oct. 20.63p2), and La Murta Obs. (Oct. 20.83p3)
CK07F010 C/2007 F1 (LONEOS) from Chante-Perdrix Obs. (Oct. 19.75p2 & 20.74-76p7) and Ageo Obs. (Oct. 20.37p4 & 21.37p4)
CK07E010 C/2007 E1 (Garradd) from New Millennium Obs. (Oct. 13.10-14p4), Schiaparelli Obs. (Oct. 16.05p1 & 16.12p1), and LINEAR (Oct. 18.37-41p5, 19.35-39p5, 20.39-41p3, 21.36-41p5 & 22.31-36p5)
CK06W030 C/2006 W3 (Christensen) from New Millennium Obs. (Oct. 13.12-15p6 & 16.12-15p4)
CK06U060 C/2006 U6 (Spacewatch) from Ageo Obs. (Oct. 5.67p2), Kambah Obs. (Oct. 13.65p2 & 19.55p2), North Ryde Obs. (Oct. 18.49-51p2), and the Siding Spring Survey (SSS) (Oct. 19.54p1)
CK06S050 C/2006 S5 (Hill) from Monte Deva Obs. (Oct. 19.03p3), Greiner Research Obs. (Oct. 20.36p3), Schiaparelli Obs. (Oct. 21.13p1), and RAS Obs. Mayhill (Oct. 23.48p2)
CK06S030 C/2006 S3 (LONEOS) from New Millennium Obs. (Oct. 4.96-99p6) and Lumezzane Obs. (Oct. 11.92-93p2 & 19.91-92p2)
CK06Q010 C/2006 Q1 (McNaught) from North Ryde Obs. (Oct. 2.76-78p2) and Kambah Obs. (Oct. 19.71-72p2)
CK06O02F C/2006 OF2 (Broughton) from Kiev Comet Station (Oct. 1.87-89p4), Siegen Obs. (Oct. 14.86p2 & 15.82-83p2), Ingenio Obs. (Oct. 15.91p2, 16.01p4 & 19.87p4), Monte Deva Obs. (Oct. 16.93-95p5 & 18.85-87p5), Sabadell Obs. (Oct. 18.75p1), Guadarrama Obs. (Oct. 18.86-87p3), Linceo Obs. (Oct. 19.78-80p3), Montcabre Obs. (Oct. 19.86-87p3), La Murta Obs. (Oct. 20.87-88p3), Tosa Obs. (Oct. 21.48-49p3), and Vicksburg Obs. (Oct. 22.07-09p2)
CK06M010 C/2006 M1 (LINEAR) from New Millennium Obs. (Oct. 13.05-08p5 & 16.05-08p6), Schiaparelli Obs. (Oct. 16.04p1 & 16.11p1), the Catalina Sky Survey (CSS) (Oct. 16.36-38p4 & 21.40-43p4), LONEOS (Oct. 18.36-41p3), and LINEAR (Oct. 22.26-31p5)
CK06K010 C/2006 K1 (McNaught) from Ageo Obs. (Oct. 10.70-73p2), Kambah Obs. (Oct. 13.74p1 & 19.66p2), and SSS (Oct. 20.61p1)
PK05Y020 P/2005 Y2 (McNaught) from CSS (Oct. 16.43-46p4) and LINEAR (Oct. 19.30-34p5)
PK04F030 P/2004 F3 (NEAT) from LONEOS (Oct. 10.41-45p4), Schiaparelli Obs. (Oct. 16.04p1 & 16.10p1), and CSS (Oct. 16.43-46p4)
0191P 191P/McNaught from New Millennium Obs. (Oct. 13.05-08p5 & 16.05-08p6), Pinsoro Obs. (Oct. 13.07-08p3), GiaGa Obs. (Oct. 15.95-99p2), Monte Deva Obs. (Oct. 18.97-98p4 & 21.99-00p5), LONEOS (Oct. 19.27-35p4), LINEAR (Oct. 19.30-34p5), CSS (Oct. 19.34-37p4), Linceo Obs. (Oct. 20.01-02p3), Schiaparelli Obs. (Oct. 20.95p1 & 22.11p1), and Hiratsuka Obs. (Oct. 21.51-52p3)
0188P 188P/LINEAR-Mueller from LINEAR (Oct. 11.20-24p5, 14.20-24p5 & 19.19-24p5), New Millennium Obs. (Oct. 12.97-00p6 & 15.94-00p10), Monte Deva Obs. (Oct. 18.89-91p5), Nazaret Obs. (Oct. 18.94-96p3), Ingenio Obs. (Oct. 19.83-85p2), Linceo Obs. (Oct. 19.88-89p3), Lumezzane Obs. (Oct. 19.90p4), La Murta Obs. (Oct. 20.80-81p3), Montcabre Obs. (Oct. 21.84p3), and Irmtraut Obs. (Oct. 22.80-82p3)
0179P 179P/Jedicke from CSS (Oct. 17.32-34p3) and LINEAR (Oct. 18.32-37p5)
0139P 139P/Vaisala-Oterma from New Millennium Obs. (Oct. 12.98-02p5 & 15.95-01p7), CSS (Oct. 13.25-27p4), LONEOS (Oct. 17.15-22p4), LINEAR (Oct. 20.25-30p3), and Schiaparelli Obs. (Oct. 21.99p1 & 22.07p1)
0136P 136P/Mueller 3 from LONEOS (Oct. 11.18-24p4) and the Mt. Lemmon Survey (MLS) (Oct. 20.27-29p4)
0128P 128P/Shoemaker-Holt 1 from Kiev Comet Station (Sept. 29.12-13p3), LINEAR (Oct. 13.42-46p4 & 22.43-48p4), and Schiaparelli Obs. (Oct. 21.10p1, 22.12p1 & 22.16p1)
0117P 117P/Helin-Roman-Alu 1 from Pinsoro Obs. (Oct. 13.02-04p3), New Millennium Obs. (Oct. 13.03-06p6 & 16.03-06p6), LINEAR (Oct. 13.25-30p5, 14.31-35p5, 18.25-30p4 & 20.25-29p5), Chante-Perdrix Obs. (Oct. 15.01-04p3 & 18.05-07p3), Nazaret Obs. (Oct. 19.91-97p3 & 20.00p3), Linceo Obs. (Oct. 19.97-99p3), and Hiratsuka Obs. (Oct. 21.46-47p3)
0116P 116P/Wild 4 from MLS (Oct. 16.42-45p4) and Montcabre Obs. (Oct. 21.95-00p3)
0113P 113P/Spitaler from New Millennium Obs. (Oct. 12.97-00p6 & 15.94-00p6) and LINEAR (Oct. 18.26-30p5)
0110P 110P/Hartley 3 from New Millennium Obs. (Oct. 13.11-15p3), Schiaparelli Obs. (Oct. 16.10p1 & 16.16p1), Isle of Man Obs. (Oct. 16.95-97p2 & 17.05p1), Irmtraut Obs. (Oct. 17.09-11p3), and Libbiano Obs. (Oct. 21.14p1)
0093P 93P/Lovas 1 from Kiev Comet Station (Oct. 2.00-01p4), Tradate Obs. (Oct. 10.84-90p3), Pinsoro Obs. (Oct. 12.97-99p3), New Millennium Obs. (Oct. 12.99-02p6 & 15.95-02p10), Siegen Obs. (Oct. 14.94p3 & 16.89p1), Village-Neuf Obs. (Oct. 15.82-86p2), Ingenio Obs. (Oct. 15.87p6 & 15.00p6), GiaGa Obs. (Oct. 15.88p1 & 15.93p1), Remanzacco Obs. (Oct. 15.94p2), Ottmarsheim Obs. (Oct. 15.95-96p3), Hamamatsu-Yuto Obs. (Oct. 16.60-61p3, 18.55p3 & 21.50-51p4), Iturrieta Obs. (Oct. 16.78p2), Isle of Man Obs. (Oct. 16.88p2), Mt. Tuffley Obs. (Oct. 17.82-83p3), Montcabre Obs. (Oct. 18.80p3 & 21.82-83p3), Guadarrama Obs. (Oct. 18.88p3), Monte Deva Obs. (Oct. 18.91-92p5 & 21.89-91p5), Nazaret Obs. (Oct. 19.87-89p4), Tosa Obs. (Oct. 20.75p3), Murcia Obs. (Oct. 20.82-83p3), La Murta Obs. (Oct. 20.83-84p3), Vicksburg Obs. (Oct. 21.13-14p2), Hiratsuka Obs. (Oct. 21.42-43p3), and Atlante Obs. (Oct. 22.85-87p4)
0074P 74P/Smirnova-Chernykh from Kiev Comet Station (Sept. 28.97-00p6), Pinsoro Obs. (Oct. 14.16-17p2), and Schiaparelli Obs. (Oct. 16.08p1 & 16.18p1)
0070P 70P/Kojima from CSS (Oct. 20.49-50p4) and Atlante Obs. (Oct. 23.25-26p3)
0050P 50P/Arend from Tradate Obs. (Oct. 10.86-92p3), New Millennium Obs. (Oct. 13.05-08p6 & 16.05-08p6), Pinsoro Obs. (Oct. 13.05-06p3), Siegen Obs. (Oct. 14.90p2 & 16.87p1), Nagano Obs. (Oct. 17.49-50p4), Mt. Tuffley Obs. (Oct. 17.84-85p3), Monte Deva Obs. (Oct. 18.93-95p5, 20.99-00p4 & 21.91-92p4), Montcabre Obs. (Oct. 19.88p3), Vicksburg Obs. (Oct. 20.30-31p2), La Murta Obs. (Oct. 20.85-86p3), Gualba Obs. (Oct. 20.00p3), Hiratsuka Obs. (Oct. 21.44p2), Chante-Perdrix Obs. (Oct. 21.85-87p3), and Atlante Obs. (Oct. 22.96-97p3)
0046P 46P/Wirtanen from SSS (Oct. 16.56p1) and North Ryde Obs. (Oct. 18.44-47p2 & 20.44-46p2)
0044P 44P/Reinmuth 2 from Schiaparelli Obs. (Sept. 7.83-85p2) and Kiev Comet Station (Oct. 1.70-74p3)
0029P 29P/Schwassmann-Wachmann 1 from New Millennium Obs. (Oct. 13.11-18p10 & 16.11-12p3), Pinsoro Obs. (Oct. 14.21p3), Schiaparelli Obs. (Oct. 16.09p1), Irmtraut Obs. (Oct. 17.12-14p3), Gualba Obs. (Oct. 19.19p1, 20.99p2 & 22.16p1), La Murta Obs. (Oct. 20.94-95p3), and Libbiano Obs. (Oct. 21.13p1)
0017P 17P/Holmes from New Millennium Obs. (Oct. 13.10-11p3, 13.16-17p2 & 16.09-13p4), Pinsoro Obs. (Oct. 13.11p2), Chante-Perdrix Obs. (Oct. 16.90-91p3), Irmtraut Obs. (Oct. 17.07-08p3), Montcabre Obs. (Oct. 19.89p3), Schiaparelli Obs. (Oct. 20.97p1), and Nazaret Obs. (Oct. 21.94-95p3 & 22.99-01p3)
0008P 8P/Tuttle from Nagano Obs. (Oct. 6.52-55p4), Siegen Obs. (Oct. 16.83p1), Irmtraut Obs. (Oct. 17.17-19p4), Chante-Perdrix Obs. (Oct. 17.77-79p3), La Murta Obs. (Oct. 20.88-89p3), Nazaret Obs. (Oct. 21.07-11p3 & 21.87-89p3), and RAS Mayhill (Oct. 23.48p2)

MPEC 2007-U68 - "16:54 UT" - Comet P/2007 T4 (Gibbs)

CK07T040 C/2007 T4 (Gibbs) (q=2.000 AU, Q=8.175 AU, TP=2007 July 19.460 TT) from Schiaparelli Obs. (Oct. 16.15p1 & 22.20p1) and Farpoint Obs. (Oct. 23.45-46p3)

MPEC 2007-U67 - "16:48 UT" - Comet P/2007 T2 (Kowalski)

PK07T020 P/2007 T2 (Kowalski) (q=0.694 AU, Q=5.522 AU, TP=2007 Sept. 18.952 TT) from Ageo Obs. (Oct. 20.77-78p3) and CSS (Oct. 21.48-49p4)

MPEC 2007-U66 - "16:43 UT" - Comet C/2007 T1 (McNaught)

CK07T010 C/2007 T1 (McNaught) (i=117.7°, q=0.969 AU, TP=2007 Dec. 12.517 TT) from Vega del Thader Obs. (Oct. 15.78-79p4), Kiev Comet Station (Oct. 16.69-72p5), Stammersdorf Obs. (Oct. 16.74-76p2), SSS (Oct. 18.40-41p2, 19.41p1, 21.40-41p2 & 22.40p1), Australian Natl. Univ. 1m telescope (Oct. 20.38-39p10), Hiratsuka Obs. (Oct. 20.38-39p3 & 21.38-39p3), Ageo Obs. (Oct. 20.39p3 & 21.38-39p3), Nagano Obs. (Oct. 21.39-40p4), Tosa Obs. (Oct. 21.42-44p3), and Montcabre Obs. (Oct. 21.78p2)

MPEC 2007-U65 - "16:37 UT" - Comet C/2007 S2 (Lemmon)

CK07S020 C/2007 S2 (Lemmon) (Centaur, q=5.552 AU, Q=19.344 AU, TP=2008 Sept. 16.872 TT) from LINEAR (Oct. 8.43-47p5 & 11.45-47p3), Kiev Comet Station (Oct. 10.04-06p4), CSS (Oct. 13.46-48p4), and Schiaparelli Obs. (Oct. 22.15-19p2)

MPEC 2007-U64 - "16:32 UT" - Comet P/2007 S1 (Zhao)

PK07S010 P/2007 S1 (Zhao) (q=2.494 AU, Q=5.102 AU, TP=2007 Dec. 6.7033 TT) from Kiev Comet Station (Oct. 9.92-93p3) and Chante-Perdrix Obs. (Oct. 16.83-85p2)

MPEC 2007-U63 - "16:28 UT" - Comet P/2007 R4 (Garradd)

PK07R040 P/2007 R4 (Garradd) (q=1.921 AU, Q=9.775 AU, TP=2007 Sept. 27.27635 TT) from Kiev Comet Station (Oct. 10.01-02p3), North Ryde Obs. (Oct. 13.58-61p2, 18.55p1, 18.60p1, 20.57p1 & 20.61p1), Kambah Obs. (Oct. 13.68-69p2 & 19.69-70p2), and SSS (Oct. 16.72p1)

MPEC 2007-U62 - "16:22 UT" - Comet P/2007 R3 (Gibbs)

PK07R030 P/2007 R3 (Gibbs) (q=2.504 AU, Q=6.070 AU, TP=2007 July 6.0410 TT) from Kiev Comet Station (Oct. 9.94p1), KLENOT (Oct. 15.83-84p5), Trieste Obs. (Oct. 15.89-90p4), and LONEOS (Oct. 17.16-23p4)

MPEC 2007-U61 - "16:19 UT" - Comet P/2007 R2 (Gibbs)

PK07R020 P/2007 R2 (Gibbs) (q=1.466 AU, Q=5.404 AU, TP=2007 Aug. 26.6859 TT) from Kiev Comet Station (Oct. 9.98-00p3), Modra Obs. (Oct. 12.14-15p2), and LONEOS (Oct. 19.38-45p4)

MPEC 2007-U60 - "16:15 UT" - Comet P/2007 R1 (Larson)

PK07R010 P/2007 R1 (Larson) (q=4.356 AU, Q=7.683 AU, TP=2007 Aug. 23.1035 TT) from Kiev Comet Station (Oct. 9.84-85p3), CSS (Oct. 12.16-18p4 & 15.25-28p4), MLS (Oct. 15.23-25p4), and Remanzacco Obs. (Oct. 19.82-83p2)

MPEC 2007-U59 - "16:10 UT" - Comet C/2007 Q3 (Siding Spring)

CK07Q030 C/2007 Q3 (Siding Spring) (i=65.7°, q=2.253 AU, Q=11892.450 AU, TP=2009 Oct. 7.68434 TT) from North Ryde Obs. (Oct. 18.63p1 & 20.65-67p2) and Kambah Obs. (Oct. 19.57-58p2)

MPEC 2007-U58 - "16:03 UT" - Comet P/2007 Q2 (Gilmore)

PK07Q020 P/2007 Q2 (Gilmore) (q=1.839 AU, Q=9.348 AU, TP=2007 Aug. 23.87738 TT) from Kiev Comet Station (Oct. 9.80-82p4), the Spacewatch 0.9m telescope (Oct. 11.10-13p6), and CSS (Oct. 15.22-24p4)

MPEC 2007-U57 - "11:42 UT" - 2007 UP6

K07U06P 2007 UP6 (small asteroid, Earth MOID=6.1 LD, H=22.8 ~93m) was discovered at 0859 UT on 22 Oct. by LINEAR, which observed it at Oct. 22.37-47p9. The discovery was confirmed by Farpoint Obs. (Oct. 23.38p3).

MPEC 2007-U56 - "11:39 UT" - 2007 UO6

K07U06O 2007 UO6 (risk-listed, Earth MOID=0.1 LD, H=27.3 ~12m) was discovered at 0844 UT on 21 Oct. by the Spacewatch 0.9m, which observed it at Oct. 21.36-40p3. The discovery was confirmed by Astronomical Research Obs. (ARO) (Oct. 22.30-31p3) and Farpoint Obs. (Oct. 23.33-36p3). This object was within ten lunar distances (LD) of Earth, reaching 1.0 LD on 17 Oct.

<< DOU on 23 Oct. '07 >> MPEC 2007-U55 - "06:12 UT" - Daily Orbit Update

Observations of risk-listed objects
K07U06D 2007 UD6 (small asteroid, arc=2 days, H=28.4 ~7m) from ARO (Oct. 22.29-30p3)
K07U03T 2007 UT3 (small asteroid, arc=3 days, H=25.9 ~22m) from Shenton Park Obs. (Oct. 22.70p3)
K07T71D 2007 TD71 (i=49.8°, arc=9 days, H=18.4 ~708m) from SSS (Oct. 22.71p1)
Observations of recently (no longer) risk-listed objects
K07T15M 2007 TM15 (i=61.5°, arc=12 days, H=21.3 ~186m) from Farra d'Isonzo Obs. (Oct. 19.82-83p2)
Observations of small asteroids (H>22.0)
K07U06G 2007 UG6 (arc=1 day, H=22.9 ~89m) from ARO (Oct. 22.22-23p3)
K07U06F 2007 UF6 (arc=1 day, H=25.7 ~25m) from ARO (Oct. 22.24-25p3)
K07U03S 2007 US3 (arc=3 days, H=22.3 ~117m) from K. Sarneczky via Australian Natl. Univ. 1m telescope (Oct. 22.61-62p4)
K07U02C 2007 UC2 (arc=4 days, H=23.0 ~85m) from Sarneczky/ANU 1m (Oct. 22.57p3)
Observations of other objects
K07U06H 2007 UH6 (q=1.525 AU, arc=1 day, H=19.6 ~407m) from MLS (Oct. 21.23-29p8 discovery & Oct. 21.34-36p4) and Sarneczky/ANU 1m (Oct. 22.58-59p3)
K07U06B 2007 UB6 (arc=3 days, H=20.4 ~282m) from LINEAR (Oct. 22.31-35p3) and ARO (Oct. 22.35-36p3)
K07U03V 2007 UV3 (q=0.280 AU, arc=3 days, H=19.1 ~513m) from LINEAR (Oct. 22.33-35p3) and Shenton Park Obs. (Oct. 22.78-79p3)
K07U00T 2007 UT (i=45.7°, arc=5 days, H=21.4 ~178m) from Shenton Park Obs. (Oct. 22.71p3)
K07T19S 2007 TS19 (arc=12 days, H=20.7 ~245m) from Hamamatsu-Yuto Obs. (Oct. 21.45-49p11) and GiaGa Obs. (Oct. 21.86-88p2)
K07T19A 2007 TA19 (arc=13 days, H=19.6 ~407m) from SSS (Oct. 22.54p1)
K07T15G 2007 TG15 (arc=12 days, H=19.7 ~389m) from New Millennium Obs. (Oct. 19.82-88p7)
K07R19T 2007 RT19 (arc=2 opp, H=18.3 ~741m) from LONEOS (Oct. 19.27-34p4) and CSS (Oct. 19.34-37p4)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Hamamatsu-Yuto Obs. (Oct. 20.64-66p7 & 21.62-63p4) and GiaGa Obs. (Oct. 21.92-94p2)
K07L32R 2007 LR32 (arc=150 days, H=17.2 ~1.23 km) from Hamamatsu-Yuto Obs. (Oct. 21.41-43p3) and LINEAR (Oct. 22.20-23p3)
K05S00G 2005 SG (arc=4 opp, H=19.0 ~537m) from CSS (Oct. 21.32-35p4)
K02U31A 2002 UA31 (arc=4 opp, H=19.0 ~537m) from LINEAR (Oct. 22.17-19p3)
K02U03R 2002 UR3 (i=48.6°, q=0.285 AU, arc=5 opp, H=16.4 ~1.78 km) from LINEAR (Oct. 22.37-43p5)
K02RB8C 2002 RC118 (Q=4.624 AU, arc=2 opp, H=16.7 ~1.55 km) from CSS (Oct. 20.30-32p4), Hamamatsu-Yuto Obs. (Oct. 21.54-55p2 & 22.56-59p5), and GiaGa Obs. (Oct. 21.87p1 & 21.92p1)
K00J10N 2000 JN10 (arc=3 opp, H=17.8 ~933m) from LONEOS (Oct. 19.27-34p4) and CSS (Oct. 19.34-36p4)
G1998 161998 1988 PA from LONEOS (Oct. 19.28-35p4) and CSS (Oct. 19.31-33p4)
F4278 154278 2002 TB9 from CSS (Oct. 19.35-37p4)
D7084 137084 1998 XS16 from New Millennium Obs. (Oct. 19.75-78p6)
21088 21088 1992 BL2 from CSS (Oct. 19.49-50p4)
11405 11405 1999 CV3 from CSS (Oct. 19.49-50p4)
08034 8034 Akka (1992 LR) from CSS (Oct. 20.39-41p4)
04486 4486 Mithra (1987 SB) from CSS (Oct. 20.34-36p4)
03753 3753 Cruithne (1986 TO) from North Ryde Obs. (Oct. 20.70-74p3)
03288 3288 Seleucus (1982 DV) from LINEAR (Oct. 22.44-48p4)
03200 3200 Phaethon (1983 TB) from CSS (Oct. 19.42-45p4)
02212 2212 Hephaistos (1978 SB) from CSS (Oct. 20.30-32p4)
01862 1862 Apollo (1932 HA) from CSS (Oct. 20.45-47p4)

Observers on 23 October '07

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

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 6 in MPECs 2007-U66, 2007-U67 & 2007-U69 -- P/2007 T2, C/2007 T1, C/2007 O1, C/2007 F1, C/2006 U6, C/2006 K1
`H55`	Astronomical Research Obs. (ARO) in Illinois, 5 in MPECs 2007-U55 & 2007-U56 -- 2007 UO6, 2007 UG6, 2007 UF6, 2007 UD6, 2007 UB6
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2007-U69 -- 93P, 70P, 50P
`413`	Australian Natl. Univ. 1m telescope in New South Wales, 1 in MPEC 2007-U66 -- C/2007 T1
`413(`	K. Sarneczky via Australian Natl. Univ. 1m telescope in New South Wales, 3 in MPEC 2007-U55 -- 2007 US3, 2007 UH6, 2007 UC2
`703`	Catalina Sky Survey (CSS) in Arizona, 24 in MPECs 2007-U55, 2007-U58, 2007-U60, 2007-U65, 2007-U67 & 2007-U69 -- P/2007 T2, C/2007 S2, 2007 RT19, P/2007 R1, P/2007 Q2, C/2006 M1, P/2005 Y2, 2005 SG, P/2004 F3, 2002 RC118, 2000 JN10, 21088, 161998, 154278, 11405, 8034, 4486, 3200, 2212, 1862, 191P, 179P, 139P, 70P
`A77`	Chante-Perdrix Obs. in France, 6 in MPECs 2007-U64 & 2007-U69 -- P/2007 S1, C/2007 F1, 117P, 50P, 17P, 8P
`734`	Farpoint Obs. in Kansas, 3 in MPECs 2007-U56, 2007-U57 & 2007-U68 -- 2007 UP6, 2007 UO6, P/2007 T4
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-U55 -- 2007 TM15
`203`	GiaGa Obs. in Italy, 5 in MPECs 2007-U55 & 2007-U69 -- 2007 TS19, 2007 PU11, 2002 RC118, 191P, 93P
`H51`	Greiner Research Obs. in Wisconsin, 1 in MPEC 2007-U69 -- C/2006 S5
`458`	Guadarrama Obs. in Spain, 2 in MPEC 2007-U69 -- C/2006 OF2, 93P
`442`	Gualba Obs. in Spain, 2 in MPEC 2007-U69 -- 50P, 29P
`379`	Hamamatsu-Yuto Obs. in Japan, 5 in MPECs 2007-U55 & 2007-U69 -- 2007 TS19, 2007 PU11, 2007 LR32, 2002 RC118, 93P
`D88`	Hiratsuka Obs., 5 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, 191P, 117P, 93P, 50P
`J39`	Ingenio Obs., 4 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 188P, 93P
`A21`	Irmtraut Obs. in Germany, 5 in MPEC 2007-U69 -- 188P, 110P, 29P, 17P, 8P
`987`	Isle of Man Obs. on the Isle of Man, 2 in MPEC 2007-U69 -- 110P, 93P
`J44`	Iturrieta Obs. in Spain, 1 in MPEC 2007-U69 -- 93P
`701`	Junk Bond Obs. in Arizona, 1 in MPEC 2007-U69 -- C/2007 N3
`246`	KLENOT in the Czech Republic, 1 in MPEC 2007-U62 -- P/2007 R3
`415`	Kambah Obs. in Australia, 5 in MPECs 2007-U59, 2007-U63 & 2007-U69 -- P/2007 R4, C/2007 Q3, C/2006 U6, C/2006 Q1, C/2006 K1
`585`	Kiev Comet Station in the Ukraine, 13 in MPECs 2007-U58, 2007-U60, 2007-U61, 2007-U62, 2007-U63, 2007-U64, 2007-U65, 2007-U66 & 2007-U69 -- C/2007 T1, C/2007 S2, P/2007 S1, P/2007 R4, P/2007 R3, P/2007 R2, P/2007 R1, P/2007 Q2, C/2006 OF2, 128P, 93P, 74P, 44P
`704`	LINEAR in New Mexico, 19 in MPECs 2007-U55, 2007-U57, 2007-U65 & 2007-U69 -- 2007 UV3, 2007 UP6, 2007 UB6, C/2007 S2, C/2007 O1, 2007 LR32, C/2007 E1, C/2006 M1, P/2005 Y2, 2002 UR3, 2002 UA31, 3288, 191P, 188P, 179P, 139P, 128P, 117P, 113P
`699`	LONEOS in Arizona, 11 in MPECs 2007-U55, 2007-U61, 2007-U62 & 2007-U69 -- 2007 RT19, P/2007 R3, P/2007 R2, C/2007 N3, C/2006 M1, P/2004 F3, 2000 JN10, 161998, 191P, 139P, 136P
`J76`	La Murta Obs. in Spain, 7 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 188P, 93P, 50P, 29P, 8P
`B33`	Libbiano Obs. in Italy, 2 in MPEC 2007-U69 -- 110P, 29P
`J59`	Linceo Obs. in Spain, 5 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 191P, 188P, 117P
`130`	Lumezzane Obs. in Italy, 2 in MPEC 2007-U69 -- C/2006 S3, 188P
`118`	Modra Obs. in Slovakia, 1 in MPEC 2007-U61 -- P/2007 R2
`213`	Montcabre Obs. in Spain, 8 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, P/2007 H1, C/2006 OF2, 188P, 116P, 93P, 50P, 17P
`945`	Monte Deva Obs. in Spain, 7 in MPEC 2007-U69 -- P/2007 H1, C/2006 S5, C/2006 OF2, 191P, 188P, 93P, 50P
`900`	Moriyama Obs. in Japan, 1 in MPEC 2007-U69 -- P/2007 H1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2007-U55, 2007-U60 & 2007-U69 -- 2007 UH6, P/2007 R1, 136P, 116P
`J93`	Mt. Tuffley Obs. in England, 2 in MPEC 2007-U69 -- 93P, 50P
`J78`	Murcia Obs. in Spain, 1 in MPEC 2007-U69 -- 93P
`D81`	Nagano Obs., 3 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, 50P, 8P
`J47`	Nazaret Obs. in Spain, 6 in MPEC 2007-U69 -- P/2007 H1, 188P, 117P, 93P, 17P, 8P
`A24`	New Millennium Obs. in Italy, 16 in MPECs 2007-U55 & 2007-U69 -- 2007 TG15, C/2007 E1, C/2006 W3, C/2006 S3, C/2006 M1, 137084, 191P, 188P, 139P, 117P, 113P, 110P, 93P, 50P, 29P, 17P
`423`	North Ryde Obs. in New South Wales, 6 in MPECs 2007-U55, 2007-U59, 2007-U63 & 2007-U69 -- P/2007 R4, C/2007 Q3, C/2006 U6, C/2006 Q1, 3753, 46P
`224`	Ottmarsheim Obs. in France, 1 in MPEC 2007-U69 -- 93P
`J52`	Pinsoro Obs. in Spain, 7 in MPEC 2007-U69 -- 191P, 117P, 93P, 74P, 50P, 29P, 17P
`H06`	RAS Obs. Mayhill in New Mexico, 2 in MPEC 2007-U69 -- C/2006 S5, 8P
`473`	Remanzacco Obs. in Italy, 2 in MPECs 2007-U60 & 2007-U69 -- P/2007 R1, 93P
`619`	Sabadell Obs. in Spain, 1 in MPEC 2007-U69 -- C/2006 OF2
`204`	Schiaparelli Obs. in Italy, 14 in MPECs 2007-U65, 2007-U68 & 2007-U69 -- P/2007 T4, C/2007 S2, C/2007 E1, C/2006 S5, C/2006 M1, P/2004 F3, 191P, 139P, 128P, 110P, 74P, 44P, 29P, 17P
`D21`	Shenton Park Obs. in Western Australia, 3 in MPEC 2007-U55 -- 2007 UV3, 2007 UT3, 2007 UT
`E12`	Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2007-U55, 2007-U63, 2007-U66 & 2007-U69 -- 2007 TD71, 2007 TA19, C/2007 T1, P/2007 R4, C/2006 U6, C/2006 K1, 46P
`510`	Siegen Obs. in Germany, 4 in MPEC 2007-U69 -- C/2006 OF2, 93P, 50P, 8P
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2007-U56 & 2007-U58 -- 2007 UO6, P/2007 Q2
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2007-U66 -- C/2007 T1
`D70`	Tosa Obs., 3 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, C/2006 OF2, 93P
`B39`	Tradate Obs. in Italy, 2 in MPEC 2007-U69 -- 93P, 50P
`A82`	Trieste Obs., 1 in MPEC 2007-U62 -- P/2007 R3
`J70`	Vega del Thader Obs. in Spain, 1 in MPEC 2007-U66 -- C/2007 T1
`H47`	Vicksburg Obs. in Mississippi, 3 in MPEC 2007-U69 -- C/2006 OF2, 93P, 50P
`138`	Village-Neuf Obs. in France, 1 in MPEC 2007-U69 -- 93P

Impact Risk Monitoring on 23 October '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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

2007 UO6	JPL Sentry	1606	2010-2104	15	1.7e-05	-5.65	-6.14	0	JPL: "Analysis based on 9 observations spanning 1.9989 days (2007-Oct-21.36454 to 2007-Oct-23.36341)." Diameter approximately 0.012 km. from mean, weighted H=27.3.

2007 UD6	NEODyS	1606	2058-2090	48	1.1e-04	-5.87	-6.18	0	NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2007/10/20.296 to 2007/10/22.301."
2007 UD6	JPL Sentry	1413	2058-2098	50	1.1e-04	-5.87	-6.20	0	JPL: "Analysis based on 39 observations spanning 2.0041 days (2007-Oct-20.29569 to 2007-Oct-22.299793)." Diameter approximately 0.007 km. from mean, weighted H=28.4.

2007 UT3	NEODyS	2000	2022-2080	20	7.42e-06	-5.08	-5.13	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/10/19.300 to 2007/10/22.705."
2007 UT3	JPL Sentry	1413	2022-2102	22	7.7e-06	-5.09	-5.16	0	JPL: "Analysis based on 16 observations spanning 3.4053 days (2007-Oct-19.2989 to 2007-Oct-22.70417)." Diameter approximately 0.025 km. from mean, weighted H=25.7.

2007 TD71	NEODyS	1414	2060-2087	14	1.95e-07	-3.22	-3.62	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2007/10/13.703 to 2007/10/22.707."
2007 TD71	JPL Sentry	1413	2063-2081	7	1.7e-07	-3.29	-3.66	0	JPL: "Analysis based on 21 observations spanning 9.0041 days (2007-Oct-13.70201 to 2007-Oct-22.70612)." Diameter approximately 0.720 km. from mean, weighted H=18.4.

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 23 October '07

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

2000	Noted that NEODyS has updated its 2007 UT3 risk assessment - see above
1746	Grabbed MPEC 2007-U69 - Observations of Comets - see above
1659	Grabbed MPEC 2007-U58 - Comet P/2007 Q2 (Gilmore) - see above Grabbed MPEC 2007-U59 - Comet C/2007 Q3 (Siding Spring) - see above Grabbed MPEC 2007-U60 - Comet P/2007 R1 (Larson) - see above Grabbed MPEC 2007-U61 - Comet P/2007 R2 (Gibbs) - see above Grabbed MPEC 2007-U62 - Comet P/2007 R3 (Gibbs) - see above Grabbed MPEC 2007-U63 - Comet P/2007 R4 (Garradd) - see above Grabbed MPEC 2007-U64 - Comet P/2007 S1 (Zhao) - see above Grabbed MPEC 2007-U65 - Comet C/2007 S2 (Lemmon) - see above Grabbed MPEC 2007-U66 - Comet C/2007 T1 (McNaught) - see above Grabbed MPEC 2007-U67 - Comet P/2007 T2 (Kowalski) - see above Grabbed MPEC 2007-U68 - Comet P/2007 T4 (Gibbs) - see above
1606	Noted that JPL Sentry has posted 2007 UO6 as an impact risk - see above
1605	Noted that NEODyS has posted 2007 UD6 as an impact risk - see above
1414	Noted that NEODyS has updated its 2007 TD71 risk assessment - see above Grabbed MPEC 2007-U55 - Daily Orbit Update - see above
1413	Noted that JPL Sentry has updated its 2007 TD71 risk assessment - see above Noted that JPL Sentry has updated its 2007 UD6 risk assessment - see above Noted that JPL Sentry has updated its 2007 UT3 risk assessment - see above Grabbed MPEC 2007-U56 - 2007 UO6 - see above
1408	Grabbed MPEC 2007-U57 - 2007 UP6 - see above

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