2008-02-18 Tracking News

Earth's temporary moon 2006 RH120 = 6R10DB9 imaged on 15 June 2006 at Great Shefford Obs.

The temporary natural Earth satellite previously known by its discovery designation, 6R10DB9, was today officially designated 2006 RH120 in MPEC 2008-D12 (see below) with an orbit solution credited to Paul Chodas at JPL. This copyrighted imagery is from Great Shefford Observatory from June 15th of last year, a week before the tiny asteroid was last tracked optically and shortly after it was observed by radar. See links for more info.

Contents on 18 February '08

IAU Minor Planet Center
- NEOCP Activity -- four listings: 4 updated
- New MPECs -- seven MPECs
- Observers -- 69 observing facilities
Impact Risk Monitoring -- two 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 18 February '08

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

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four updated listings. Of these, three were "one nighters."

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 18 February '08

Minor Planet Electronic Circulars

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

MPEC 2008-D06 time-stamped "00:29 UT" - Comet C/2007 Y1 (LINEAR) - see below
MPEC 2008-D07 time-stamped "00:32 UT" - Comet C/2007 Y2 (McNaught) - see below
MPEC 2008-D08 time-stamped "00:35 UT" - Comet C/2008 A1 (McNaught) - see below
MPEC 2008-D09 time-stamped "00:41 UT" - Comet C/2008 C1 (Chen-Gao) - see below
MPEC 2008-D10 time-stamped "00:55 UT" - Observations of Comets - see below
MPEC 2008-D11 time-stamped "07:10 UT" - Daily Orbit Update - see below
MPEC 2008-D12 time-stamped "14:05 UT" - 2006 RH120

MPEC 2008-D12 - "14:05 UT" - 2006 RH120

K06RC0H 2006 RH120 (small asteroid, Earth MOID=5.4 LD, H=29.5 ~4m) was discovered at 0629 UT on 14 Sept. 2006 by the Catalina Sky Survey (CSS), which observed it at 2006 Sept. 14.27-33p7, 2006 Sept. 16.30-31p4, and 2006 Sept. 17.30-31p3. The discovery was confirmed by the Siding Spring Survey (SSS) (2006 Sept. 14.57p2, 2006 Sept. 16.61p10, 2006 Sept. 18.60-61p2, 2006 Sept. 18.71p2, 2006 Sept. 21.67p2, 2006 Sept. 23.63-64p2, 2006 Sept. 25.78p1, 2006 Sept. 26.67-68p2 & 2006 Sept. 28.68-69p2), Sabino Canyon Obs. (2006 Sept. 15.30-31p3), Catalina Station (Catalina Sta.) (2006 Sept. 22.36p3), the Spacewatch 1.8m telescope (2006 Dec. 11.29-30p3 & 2006 Dec. 13.32-34p3), the Mt. Lemmon Survey (MLS) (2006 Dec. 12.37-41p4, 2006 Dec. 16.34-36p5, 2006 Dec. 17.28-29p2, 2007 March 15.12-13p4 & 2007 June 22.31-33p3), the Southern African Large Telescope (SALT) (2007 March 11.86-87p10, 2007 March 15.83-86p5, 2007 March 16.82-85p13, 2007 March 17.80-82p9 & 2007 March 18.81p3), and Great Shefford Obs. (2007 March 20.95-98p6, 2007 June 15.95-98p4, 2007 June 18.95-00p9 & 2007 June 20.97-03p4).

<< DOU on 18 Feb. '08 >> MPEC 2008-D11 - "07:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K08CB8R 2008 CR118 (arc=8 days, H=18.7 ~616m) from Great Shefford Obs. (Feb. 18.04-06p2)
K08CB6L 2008 CL116 (Q=5.035 AU, arc=7 days, H=20.3 ~295m) from KLENOT (Feb. 17.07p7)
K08A04F 2008 AF4 (arc=39 days, H=19.7 ~389m) from Kinver Obs. (Feb. 17.90-93p6) and Great Shefford Obs. (Feb. 18.01-02p3)
Observations of recently (no longer) risk-listed objects
K08CB9G 2008 CG119 (i=41.2°, arc=4 days, H=19.0 ~537m) from SSS (Feb. 17.50p2)
K08C22D 2008 CD22 (almost small, arc=8 days, H=22.0 ~135m) from Desert Moon Obs. (Feb. 17.28-29p4)
K08C20M 2008 CM20 (arc=10 days, H=21.0 ~214m) from Great Shefford Obs. (Feb. 17.84-88p2)
K08C01S 2008 CS1 (arc=13 days, H=20.2 ~309m) from Astronomical Research Obs. (ARO) (Feb. 9.47p4)
K08B15D 2008 BD15 (arc=15 days, H=20.6 ~257m) from Schiaparelli Obs. (Feb. 13.05-08p3)
Observations of small asteroids (H>22.0)
K08CB9E 2008 CE119 (arc=4 days, H=25.6 ~26m) from Jim Young via Table Mtn. Obs. (Feb. 17.32-34p4)
K08C00P 2008 CP (arc=16 days, H=24.1 ~51m) from Schiaparelli Obs. (Feb. 13.05-06p5), Silver Spring Obs. (Feb. 17.12-15p2), and Great Shefford Obs. (Feb. 17.94-96p3)
K07D00A 2007 DA (arc=2 opp, H=22.4 ~112m) from Farra d'Isonzo Obs. (Feb. 16.88-90p2)
Observations of other objects
K08CB6R 2008 CR116 (arc=6 days, H=20.3 ~295m) from University Hills Obs. (Feb. 16.41-43p6) and Desert Moon Obs. (Feb. 17.44p2)
K08C72L 2008 CL72 (arc=14 days, H=19.9 ~355m) from Desert Moon Obs. (Feb. 17.38-39p3)
K08C70N 2008 CN70 (arc=8 days, H=19.1 ~513m) from SSS (Feb. 17.47p1)
K08C01N 2008 CN1 (arc=16 days, H=20.5 ~269m) from Schiaparelli Obs. (Feb. 13.13p5), University Hills Obs. (Feb. 16.38-40p6), Desert Moon Obs. (Feb. 17.42p5), Hamamatsu-Yuto Obs. (Feb. 17.55-58p8), and Atlante Obs. (Feb. 17.97-98p4)
K08C01L 2008 CL1 (arc=15 days, H=19.1 ~513m) from University Hills Obs. (Feb. 16.45-48p5)
K07T24U 2007 TU24 (arc=129 days, H=20.6 ~257m) from Eridanus Obs. (Feb. 15.94-98p5 & 16.91-94p6) and University Hills Obs. (Feb. 16.43-44p6)
K07T08G 2007 TG8 (Q=4.305 AU, arc=158 days, H=18.6 ~645m) from University Hills Obs. (Feb. 16.33-35p6), Hamamatsu-Yuto Obs. (Feb. 17.63-65p3), and Atlante Obs. (Feb. 17.00p3)
K07R19X 2007 RX19 (i=40.4°, arc=157 days, H=18.5 ~676m) from Kinver Obs. (Feb. 17.83-85p6)
K06D62U 2006 DU62 (arc=3 opp, H=18.2 ~776m) from Schiaparelli Obs. (Feb. 13.09-10p5), University Hills Obs. (Feb. 16.36-38p6), and Atlante Obs. (Feb. 17.90-91p3)
K05T45U 2005 TU45 (arc=3 opp, H=17.0 ~1.35 km) from Hamamatsu-Yuto Obs. (Feb. 15.52-54p3)
K05E70K 2005 EK70 (arc=4 opp, H=17.5 ~1.07 km) from Schiaparelli Obs. (Feb. 13.05-09p3), Hamamatsu-Yuto Obs. (Feb. 15.62-67p5 & 17.53-55p8), San Vito Obs. (Feb. 17.86-87p3), and Atlante Obs. (Feb. 17.88-89p3)
K04XG4P 2004 XP164 (arc=3 opp, H=17.5 ~1.07 km) from Wildberg Obs. (Feb. 17.78-79p5)
F3591 153591 2001 SN263 from Mataro Obs. (Feb. 10.79-82p3), Modra Obs. (Feb. 15.87-88p7, 16.76p4, 16.85-86p5 & 16.98p4), and Desert Moon Obs. (Feb. 17.26p4)
11398 11398 1998 YP11 from Mataro Obs. (Feb. 15.99p3)
04450 4450 Pan (1987 SY) from San Vito Obs. (Feb. 17.87p3)
03554 3554 Amun (1986 EB) from Montana Blanca Obs. (Feb. 17.84p3)
03288 3288 Seleucus (1982 DV) from Goodricke-Pigott Obs. (Feb. 11.18-20p2)
01864 1864 Daedalus (1971 FA) from Goodricke-Pigott Obs. (Feb. 11.41-44p3)
01620 1620 Geographos (1951 RA) from Mataro Obs. (Feb. 15.97-98p3), Hunters Hill Obs. (Feb. 17.51p1, 17.62p1 & 17.69p1), and Atlante Obs. (Feb. 17.94-95p3)

MPEC 2008-D10 - "00:55 UT" - Observations of Comets

CK07W030 C/2007 W3 (LINEAR) from Chante-Perdrix Obs. (Feb. 7.77-78p3) and Schiaparelli Obs. (Feb. 12.87p1 & 12.91p1)
CK07W010 C/2007 W1 (Boattini) from La Vara Obs. (Feb. 9.07p1), LINEAR (Feb. 10.39-44p5), Monte Deva Obs. (Feb. 11.06-07p5, 12.04-06p5, 13.00-01p4, 13.99-01p4 & 15.07-08p5), Hradec Kralove Obs. (Feb. 13.03p5), Schiaparelli Obs. (Feb. 13.10p1 & 13.17p1), Gualba Obs. (Feb. 15.24p1), Montcabre Obs. (Feb. 16.05p1, 16.12p1 & 16.20p1), and Masquefa Obs. (Feb. 16.13-14p3)
PK07V11Q P/2007 VQ11 (CATALINA) from Lumezzane Obs. (Feb. 7.76-77p3), Schiaparelli Obs. (Feb. 9.87-91p2), LONEOS (Feb. 10.11-18p4), and Hiratsuka Obs. (Feb. 10.51-52p2)
CK07U010 C/2007 U1 (LINEAR) from Hiratsuka Obs. (Feb. 10.46-47p2) and Monte Deva Obs. (Feb. 10.95p3 & 11.97p3)
PK07T060 P/2007 T6 (Catalina) from Szamotuly-Galowo Obs. (Feb. 4.01p1), CSS (Feb. 10.26-28p4 & 13.19-21p4), LONEOS (Feb. 10.30-38p4), CAST Obs. (Feb. 12.89p1), LINEAR (Feb. 13.28-31p3), and Nazaret Obs. (Feb. 14.88-91p3)
CK07T050 C/2007 T5 (Gibbs) from Lumezzane Obs. (Feb. 7.98p4), La Vara Obs. (Feb. 10.05-06p3), Bocholt Obs. (Feb. 11.84-86p4), and Ageo Obs. (Feb. 16.71-72p2)
PK07T040 P/2007 T4 (Gibbs) from Buchloe Obs. (Feb. 8.87p1) and Schiaparelli Obs. (Feb. 12.06p1 & 12.18p1)
CK07T010 C/2007 T1 (McNaught) from AAAA Buenos Aires Obs. (Feb. 10.02p1, 10.07p1, 10.12-13p2, 12.06-09p3 & 12.14p1) and Kambah Obs. (Feb. 16.60p2)
CK07S020 C/2007 S2 (Lemmon) from LINEAR (Feb. 11.21-26p5), CAST Obs. (Feb. 12.87p1), and Chante-Perdrix Obs. (Feb. 12.92-95p3)
CK07M020 C/2007 M2 (Catalina) from LINEAR (Feb. 8.39-44p5), Ageo Obs. (Feb. 8.69p2), Schiaparelli Obs. (Feb. 13.12p1 & 13.19p1), LONEOS (Feb. 13.41-46p4), CSS (Feb. 14.37-38p4), and Mataro Obs. (Feb. 16.02p1)
CK07D030 C/2007 D3 (LINEAR) from CSS (Feb. 9.26-29p2) and LINEAR (Feb. 10.33-38p5)
CK07D010 C/2007 D1 (LINEAR) from El Olivo Obs. (Feb. 2.06-07p3) and Schiaparelli Obs. (Feb. 10.05p1 & 10.14p1)
CK07B020 C/2007 B2 (Skiff) from Moriyama Obs. (Feb. 8.79p2), Monte Deva Obs. (Feb. 11.05p4 & 15.06-07p4), Borken Obs. (Feb. 11.10-15p5), Atlante Obs. (Feb. 12.01-02p2), Ametlla del Valles Obs. (Feb. 12.07-08p5), Hradec Kralove Obs. (Feb. 13.01-02p5), Klet Obs. (Feb. 13.02-03p7), Schiaparelli Obs. (Feb. 13.11p1 & 13.18p1), Gualba Obs. (Feb. 15.24p1), Mataro Obs. (Feb. 15.00-01p2), Montcabre Obs. (Feb. 16.02-04p3), and Masquefa Obs. (Feb. 16.10-12p3)
CK06W030 C/2006 W3 (Christensen) from Szamotuly-Galowo Obs. (Feb. 3.93p2), La Vara Obs. (Feb. 9.92-93p3 & 10.93-94p2), Hiratsuka Obs. (Feb. 10.45p2), Hradec Kralove Obs. (Feb. 10.85-86p5), Monte Deva Obs. (Feb. 11.93p5), and Schiaparelli Obs. (Feb. 12.89-92p2)
CK06S050 C/2006 S5 (Hill) from Szamotuly-Galowo Obs. (Jan. 14.00-01p6), Kiev Comet Station (Feb. 4.05-07p5), La Vara Obs. (Feb. 9.98-99p3, 12.01p3 & 12.93-94p3), LINEAR (Feb. 10.21-26p3), Guadarrama Obs. (Feb. 10.86-88p2), Hradec Kralove Obs. (Feb. 10.89-90p5 & 12.93-94p5), MLS (Feb. 11.18-20p4), Monte Deva Obs. (Feb. 11.00p5, 12.94-95p5, 13.93-95p4 & 14.95-97p4), Klet Obs. (Feb. 12.00p7), Capannoli Obs. (Feb. 13.01-02p2), Ageo Obs. (Feb. 13.72-73p2), Bocholt Obs. (Feb. 15.77-81p4), Mataro Obs. (Feb. 15.86p1, 15.91p1 & 15.96p1), and Linceo Obs. (Feb. 16.90-91p2)
CK06Q010 C/2006 Q1 (McNaught) from AAAA Buenos Aires Obs. (Feb. 5.17-24p3 & 6.20-22p2) and Kambah Obs. (Feb. 12.61p2)
PK06H30R P/2006 HR30 (Siding Spring) from Kambah Obs. (Jan. 26.71-72p2) and SSS (Feb. 12.69-73p3)
CK06E010 C/2006 E1 (McNaught) from Kambah Obs. (Jan. 26.57-59p2, Feb. 12.55-57p2 & 13.55-57p2)
PK05SL6B P/2005 SB216 (LONEOS) from Ametlla del Valles Obs. (Feb. 11.96-97p3) and LINEAR (Feb. 13.27-32p5)
CK02V94Q C/2002 VQ94 (LINEAR) from Farpoint Obs. (Feb. 13.45-46p4) and Schiaparelli Obs. (Feb. 15.15p1 & 15.23p1)
0192P 192P/Shoemaker-Levy 1 from Ageo Obs. (Feb. 11.39p2 & 16.46-47p3)
0191P 191P/McNaught from Szamotuly-Galowo Obs. (Jan. 13.80-81p3), LINEAR (Feb. 10.09-14p5), LONEOS (Feb. 10.09-17p4), La Vara Obs. (Feb. 10.85-86p6), and Vicksburg Obs. (Feb. 11.05-06p2)
0183P 183P/Korlevic-Juric from Schiaparelli Obs. (Feb. 10.05p1) and CSS (Feb. 13.25-27p4)
0180P 180P/NEAT from Ametlla del Valles Obs. (Feb. 1.05-06p2 & 11.97p3), Lumezzane Obs. (Feb. 8.06-08p4), Verona Obs. (Feb. 12.91-94p4), CAST Obs. (Feb. 12.91p1), Monte Deva Obs. (Feb. 12.97-98p4), Ageo Obs. (Feb. 16.80-81p3), and KLENOT (Feb. 16.00p6)
0179P 179P/Jedicke from Schiaparelli Obs. (Feb. 9.85-89p2), CSS (Feb. 10.11-13p4), and LINEAR (Feb. 11.09-14p4)
0173P 173P/Mueller 5 from La Vara Obs. (Feb. 10.02p3), MLS (Feb. 11.16-17p4), and LINEAR (Feb. 13.16-20p4)
0172P 172P/Yeung from Ametlla del Valles Obs. (Jan. 29.08-10p4 & Feb. 12.04-05p5), Kiev Comet Station (Feb. 12.13-15p5), and CSS (Feb. 14.31-33p4)
0128P 128P/Shoemaker-Holt 1 from LINEAR (Feb. 10.21-23p3) and Capannoli Obs. (Feb. 13.00p1)
0124P 124P/Mrkos from Lumezzane Obs. (Feb. 8.08-09p4), Ametlla del Valles Obs. (Feb. 12.01-02p3), Monte Deva Obs. (Feb. 12.02-03p3, 13.96p3 & 15.03p4), Ageo Obs. (Feb. 14.76-77p3), Gualba Obs. (Feb. 15.25p1), Montcabre Obs. (Feb. 15.95p3), and Borken Obs. (Feb. 17.08-09p5)
0110P 110P/Hartley 3 from Szamotuly-Galowo Obs. (Jan. 13.96-97p3, Feb. 3.94-95p3 & 10.94p2), Ametlla del Valles Obs. (Feb. 10.79-80p4), Hradec Kralove Obs. (Feb. 10.87p5), Monte Deva Obs. (Feb. 10.97-98p5, 11.98-99p5 & 12.92-93p5), La Vara Obs. (Feb. 11.98-00p3), MLS (Feb. 12.19-22p4), and CAST Obs. (Feb. 12.79p1)
0108P 108P/Ciffreo from Schiaparelli Obs. (Feb. 8.16p1) and CSS (Feb. 10.26-28p4)
0093P 93P/Lovas 1 from Szamotuly-Galowo Obs. (Jan. 13.83p4), La Vara Obs. (Feb. 8.87-88p3, 9.88-91p3 & 10.88p3), Hiratsuka Obs. (Feb. 10.42-43p3), Vitebsk Obs. (Feb. 10.73-74p4), Hradec Kralove Obs. (Feb. 10.81-83p5), Monte Deva Obs. (Feb. 10.91-92p3, 11.94p3 & 12.89p5), Montana Blanca Obs. (Feb. 11.81-82p3), Moriyama Obs. (Feb. 13.50-51p2), and Mataro Obs. (Feb. 16.81-83p3)
0079P 79P/du Toit-Hartley from Ametlla del Valles Obs. (Jan. 26.92p3, Feb. 10.89-90p5 & 11.87-89p3) and LINEAR (Feb. 11.15-20p5)
0074P 74P/Smirnova-Chernykh from Szamotuly-Galowo Obs. (Jan. 13.98p6), Hiratsuka Obs. (Feb. 10.53p2), Ametlla del Valles Obs. (Feb. 10.78p3), Vicksburg Obs. (Feb. 11.10-12p2), and Schiaparelli Obs. (Feb. 12.96p1 & 13.01p1)
0070P 70P/Kojima from LONEOS (Feb. 10.41-49p4), Schiaparelli Obs. (Feb. 13.12p1 & 13.18p1), and Ageo Obs. (Feb. 13.77-78p3)
0065P 65P/Gunn from Szamotuly-Galowo Obs. (Feb. 3.99-00p3), Moriyama Obs. (Feb. 8.69-70p2), La Vara Obs. (Feb. 9.04-05p3 & 10.00-01p3), Monte Deva Obs. (Feb. 11.01-02p5 & 12.00-02p4), Ametlla del Valles Obs. (Feb. 11.95p3), LINEAR (Feb. 12.24-29p4 & 13.16-21p5), CSS (Feb. 12.26-28p4), CAST Obs. (Feb. 12.88p1), and Klet Obs. (Feb. 13.06-07p6)
0050P 50P/Arend from Szamotuly-Galowo Obs. (Jan. 13.93-94p6), Hiratsuka Obs. (Feb. 10.43-44p3), Vitebsk Obs. (Feb. 10.75-76p3), and La Vara Obs. (Feb. 10.87p3)
0046P 46P/Wirtanen from Xingming Obs. (Feb. 8.61-65p4), La Vara Obs. (Feb. 8.83p3 & 10.84-85p3), RAS Obs. Mayhill (Feb. 9.11p2), Village-Neuf Obs. (Feb. 9.74-78p2), Vitebsk Obs. (Feb. 10.71-72p5), Hradec Kralove Obs. (Feb. 10.78-79p5), Guadarrama Obs. (Feb. 10.80-81p2), Siegen Obs. (Feb. 10.84-85p2), Monte Deva Obs. (Feb. 10.87-88p5, 11.91p4 & 12.84-85p5), Moriyama Obs. (Feb. 13.49-50p2), Montcabre Obs. (Feb. 15.81p3 & 16.80-82p3), and Nazaret Obs. (Feb. 15.82-83p3 & 17.84-86p3)
0029P 29P/Schwassmann-Wachmann 1 from Szamotuly-Galowo Obs. (Jan. 13.99-00p4), Xingming Obs. (Feb. 8.73-74p2), Remanzacco Obs. (Feb. 8.92p1), La Vara Obs. (Feb. 9.02-03p3, 10.96p2 & 11.97p2), RAS Mayhill (Feb. 9.11p1 & 9.19p1), Hradec Kralove Obs. (Feb. 10.88-89p5), Guadarrama Obs. (Feb. 10.95-97p2), Ametlla del Valles Obs. (Feb. 11.80-81p3), Chante-Perdrix Obs. (Feb. 11.87-90p3), CAST Obs. (Feb. 12.80p1), Klet Obs. (Feb. 13.04p5), La Fecha Obs. (Feb. 13.99-02p2), Montcabre Obs. (Feb. 14.80-81p3), and Nazaret Obs. (Feb. 14.94-97p3)
0026P 26P/Grigg-Skjellerup from Auckland Obs. (Feb. 5.51p3) and Kambah Obs. (Feb. 12.64-65p2)
0017P 17P/Holmes from Szamotuly-Galowo Obs. (Jan. 13.88p2 & 13.95-96p6), La Vara Obs. (Feb. 9.86-87p3), Monte Deva Obs. (Feb. 10.93-94p5 & 11.95p5), Moriyama Obs. (Feb. 13.51-52p2), Mataro Obs. (Feb. 16.79-82p3), and Stammersdorf Obs. (Feb. 16.80-82p3)
0008P 8P/Tuttle from Szamotuly-Galowo Obs. (Jan. 13.78-80p3) and Kambah Obs. (Feb. 12.47p2)
0007P 7P/Pons-Winnecke from CSS (Feb. 10.35-37p4), CAST Obs. (Feb. 12.92p1), and Nazaret Obs. (Feb. 15.02-03p3)

MPEC 2008-D09 - "00:41 UT" - Comet C/2008 C1 (Chen-Gao)

CK08C010 C/2008 C1 (Chen-Gao) (i=61.8°, q=1.262 AU, TP=2008 Apr. 16.852 TT) from Xingming Obs. (Feb. 8.67-71p4), La Vara Obs. (Feb. 8.85p3 & 10.90p2), Crni Vrh Obs. (Feb. 9.78-79p10), RAS Mayhill (Feb. 10.11p2), Hiratsuka Obs. (Feb. 10.41-42p3), Hradec Kralove Obs. (Feb. 10.75p5), Monte Deva Obs. (Feb. 10.88p4 & 11.91-92p3), Kiev Comet Station (Feb. 11.79-81p6 & 11.86p1), Atlante Obs. (Feb. 11.89-90p3), Klet Obs. (Feb. 11.90p7), CAST Obs. (Feb. 12.78p1), Schiaparelli Obs. (Feb. 12.87p1 & 12.92p1), La Fecha Obs. (Feb. 13.87p1 & 13.92p1), Montana Blanca Obs. (Feb. 15.82-83p2), Montcabre Obs. (Feb. 15.85-86p3), Nazaret Obs. (Feb. 15.87-88p3), and Stammersdorf Obs. (Feb. 16.76-78p3)

MPEC 2008-D08 - "00:35 UT" - Comet C/2008 A1 (McNaught)

CK08A010 C/2008 A1 (McNaught) (i=82.5°, q=1.073 AU, TP=2008 Sept. 29.1689 TT) from AAAA Buenos Aires Obs. (Feb. 5.12-16p3 & 6.14-16p2), Hiratsuka Obs. (Feb. 10.49p1), Kambah Obs. (Feb. 12.63p2), and North Ryde Obs. (Feb. 15.54-55p2)

MPEC 2008-D07 - "00:32 UT" - Comet C/2007 Y2 (McNaught)

CK07Y020 C/2007 Y2 (McNaught) (i=98.5°, q=4.212 AU, TP=2008 Apr. 7.6489 TT) from North Ryde Obs. (Feb. 12.53-57p2 & 15.48-52p2) and Kambah Obs. (Feb. 12.60-61p2)

MPEC 2008-D06 - "00:29 UT" - Comet C/2007 Y1 (LINEAR)

CK07Y010 C/2007 Y1 (LINEAR) (i=110.2°, q=3.341 AU, TP=2008 Mar. 19.3275 TT) from LINEAR (Feb. 11.33-38p5), Kiev Comet Station (Feb. 12.02-05p6), CAST Obs. (Feb. 12.88p1), and Ageo Obs. (Feb. 16.68p3)

Observers on 18 February '08

A total of 69 observing facilities appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 3 in MPECs 2008-D08 & 2008-D10 -- C/2008 A1, C/2007 T1, C/2006 Q1
`349`	Ageo Obs. in Japan, 8 in MPECs 2008-D06 & 2008-D10 -- C/2007 Y1, C/2007 T5, C/2007 M2, C/2006 S5, 192P, 180P, 124P, 70P
`B37`	Ametlla del Valles Obs. in Spain, 10 in MPEC 2008-D10 -- C/2007 B2, P/2005 SB216, 180P, 172P, 124P, 110P, 79P, 74P, 65P, 29P
`H55`	Astronomical Research Obs. in Illinois, 1 in MPEC 2008-D11 -- 2008 CS1
`J51`	Atlante Obs. in the Canary Islands, 7 in MPECs 2008-D09, 2008-D10 & 2008-D11 -- 2008 CN1, C/2008 C1, 2007 TG8, C/2007 B2, 2006 DU62, 2005 EK70, 1620
`467`	Auckland Obs. in New Zealand, 1 in MPEC 2008-D10 -- 26P
`B48`	Bocholt Obs. in Germany, 2 in MPEC 2008-D10 -- C/2007 T5, C/2006 S5
`B59`	Borken Obs., 2 in MPEC 2008-D10 -- C/2007 B2, 124P
`215`	Buchloe Obs. in Germany, 1 in MPEC 2008-D10 -- P/2007 T4
`235`	CAST Obs. in Italy, 9 in MPECs 2008-D06, 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 Y1, P/2007 T6, C/2007 S2, 180P, 110P, 65P, 29P, 7P
`B09`	Capannoli Obs. in Italy, 2 in MPEC 2008-D10 -- C/2006 S5, 128P
`703`	Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2008-D10 & 2008-D12 -- P/2007 T6, C/2007 M2, C/2007 D3, 2006 RH120, 183P, 179P, 172P, 108P, 65P, 7P
`693`	Catalina Station in Arizona, 1 in MPEC 2008-D12 -- 2006 RH120
`A77`	Chante-Perdrix Obs. in France, 3 in MPEC 2008-D10 -- C/2007 W3, C/2007 S2, 29P
`106`	Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-D09 -- C/2008 C1
`448`	Desert Moon Obs. in New Mexico, 5 in MPEC 2008-D11 -- 2008 CR116, 2008 CN1, 2008 CL72, 2008 CD22, 153591
`J36`	El Olivo Obs. in Spain, 1 in MPEC 2008-D10 -- C/2007 D1
`A27`	Eridanus Obs. in Germany, 1 in MPEC 2008-D11 -- 2007 TU24
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2008-D10 -- C/2002 VQ94
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-D11 -- 2007 DA
`683`	Goodricke-Pigott Obs. in Arizona, 2 in MPEC 2008-D11 -- 3288, 1864
`J95`	Great Shefford Obs. in England, 5 in MPECs 2008-D11 & 2008-D12 -- 2008 CR118, 2008 CP, 2008 CM20, 2008 AF4, 2006 RH120
`458`	Guadarrama Obs. in Spain, 3 in MPEC 2008-D10 -- C/2006 S5, 46P, 29P
`442`	Gualba Obs. in Spain, 3 in MPEC 2008-D10 -- C/2007 W1, C/2007 B2, 124P
`379`	Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2008-D11 -- 2008 CN1, 2007 TG8, 2005 TU45, 2005 EK70
`D88`	Hiratsuka Obs., 8 in MPECs 2008-D08, 2008-D09 & 2008-D10 -- C/2008 C1, C/2008 A1, P/2007 VQ11, C/2007 U1, C/2006 W3, 93P, 74P, 50P
`048`	Hradec Kralove Obs. in the Czech Republic, 9 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 W3, C/2006 S5, 110P, 93P, 46P, 29P
`E14`	Hunters Hill Obs. in Australian Capital Territory, 1 in MPEC 2008-D11 -- 1620
`246`	KLENOT in the Czech Republic, 2 in MPECs 2008-D10 & 2008-D11 -- 2008 CL116, 180P
`415`	Kambah Obs. in the Australian Capital Territory, 8 in MPECs 2008-D07, 2008-D08 & 2008-D10 -- C/2008 A1, C/2007 Y2, C/2007 T1, C/2006 Q1, P/2006 HR30, C/2006 E1, 26P, 8P
`585`	Kiev Comet Station in the Ukraine, 4 in MPECs 2008-D06, 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 Y1, C/2006 S5, 172P
`J66`	Kinver Obs. in England, 2 in MPEC 2008-D11 -- 2008 AF4, 2007 RX19
`046`	Klet Obs. in the Czech Republic, 5 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 B2, C/2006 S5, 65P, 29P
`704`	LINEAR in New Mexico, 14 in MPECs 2008-D06 & 2008-D10 -- C/2007 Y1, C/2007 W1, P/2007 T6, C/2007 S2, C/2007 M2, C/2007 D3, C/2006 S5, P/2005 SB216, 191P, 179P, 173P, 128P, 79P, 65P
`699`	LONEOS in Arizona, 5 in MPEC 2008-D10 -- P/2007 VQ11, P/2007 T6, C/2007 M2, 191P, 70P
`J34`	La Fecha Obs. in Spain, 2 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, 29P
`J38`	La Vara Obs. in Spain, 14 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 W1, C/2007 T5, C/2006 W3, C/2006 S5, 191P, 173P, 110P, 93P, 65P, 50P, 46P, 29P, 17P
`J59`	Linceo Obs. in Spain, 1 in MPEC 2008-D10 -- C/2006 S5
`130`	Lumezzane Obs. in Italy, 4 in MPEC 2008-D10 -- P/2007 VQ11, C/2007 T5, 180P, 124P
`232`	Masquefa Obs. in Spain, 2 in MPEC 2008-D10 -- C/2007 W1, C/2007 B2
`A06`	Mataro Obs. in Spain, 8 in MPECs 2008-D10 & 2008-D11 -- C/2007 M2, C/2007 B2, C/2006 S5, 153591, 11398, 1620, 93P, 17P
`118`	Modra Obs. in Slovakia, 1 in MPEC 2008-D11 -- 153591
`J46`	Montana Blanca Obs. in the Canary Islands, 3 in MPECs 2008-D09, 2008-D10 & 2008-D11 -- C/2008 C1, 3554, 93P
`213`	Montcabre Obs. in Spain, 6 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 W1, C/2007 B2, 124P, 46P, 29P
`945`	Monte Deva Obs. in Spain, 13 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, C/2007 W1, C/2007 U1, C/2007 B2, C/2006 W3, C/2006 S5, 180P, 124P, 110P, 93P, 65P, 46P, 17P
`900`	Moriyama Obs. in Japan, 5 in MPEC 2008-D10 -- C/2007 B2, 93P, 65P, 46P, 17P
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2008-D10 & 2008-D12 -- C/2006 S5, 2006 RH120, 173P, 110P
`J47`	Nazaret Obs. in Spain, 5 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, P/2007 T6, 46P, 29P, 7P
`423`	North Ryde Obs. in New South Wales, 2 in MPECs 2008-D07 & 2008-D08 -- C/2008 A1, C/2007 Y2
`H06`	RAS Obs. Mayhill in New Mexico, 3 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, 46P, 29P
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2008-D10 -- 29P
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-D12 -- 2006 RH120
`233`	San Vito Obs. in Italy, 2 in MPEC 2008-D11 -- 2005 EK70, 4450
`204`	Schiaparelli Obs. in Italy, 20 in MPECs 2008-D09, 2008-D10 & 2008-D11 -- 2008 CP, 2008 CN1, C/2008 C1, 2008 BD15, C/2007 W3, C/2007 W1, P/2007 VQ11, P/2007 T4, C/2007 M2, C/2007 D1, C/2007 B2, C/2006 W3, 2006 DU62, 2005 EK70, C/2002 VQ94, 183P, 179P, 108P, 74P, 70P
`E12`	Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2008-D10, 2008-D11 & 2008-D12 -- 2008 CN70, 2008 CG119, 2006 RH120, P/2006 HR30
`510`	Siegen Obs. in Germany, 1 in MPEC 2008-D10 -- 46P
`H85`	Silver Spring Obs. in Maryland, 1 in MPEC 2008-D11 -- 2008 CP
`B31`	Southern African Large Telescope in South Africa, 1 in MPEC 2008-D12 -- 2006 RH120
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-D12 -- 2006 RH120
`A97`	Stammersdorf Obs. in Austria, 2 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, 17P
`B30`	Szamotuly-Galowo Obs. in Poland, 12 in MPEC 2008-D10 -- P/2007 T6, C/2006 W3, C/2006 S5, 191P, 110P, 93P, 74P, 65P, 50P, 29P, 17P, 8P
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-D11 -- 2008 CE119
`G72`	University Hills Obs. in southern California, 6 in MPEC 2008-D11 -- 2008 CR116, 2008 CN1, 2008 CL1, 2007 TU24, 2007 TG8, 2006 DU62
`A48`	Verona Obs. in Italy, 1 in MPEC 2008-D10 -- 180P
`H47`	Vicksburg Obs. in Mississippi, 2 in MPEC 2008-D10 -- 191P, 74P
`138`	Village-Neuf Obs. in France, 1 in MPEC 2008-D10 -- 46P
`B42`	Vitebsk Obs. in Belarus, 3 in MPEC 2008-D10 -- 93P, 50P, 46P
`198`	Wildberg Obs. in Germany, 1 in MPEC 2008-D11 -- 2004 XP164
`C42`	Xingming Obs. in China, 3 in MPECs 2008-D09 & 2008-D10 -- C/2008 C1, 46P, 29P

Impact Risk Monitoring on 18 February '08

**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 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 CL116	NEODyS	1548	2078	3	9.36e-08	-4.69	-4.93	0	NEODyS: "Based on 57 optical observations (of which 0 are rejected as outliers) from 2008/02/10.407 to 2008/02/17.074."

2008 AF4	NEODyS	2159	2078-2089	10	1.25e-05	-2.57	-2.65	0	NEODyS: "Based on 547 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/02/18.021."

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 18 February '08

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

2159	Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
1548	Noted that NEODyS has updated its 2008 CL116 risk assessment - see above Grabbed MPEC 2008-D11 - Daily Orbit Update - see above Grabbed MPEC 2008-D12 - 2006 RH120 - see above
0200	Grabbed MPEC 2008-D06 - Comet C/2007 Y1 (LINEAR) - see above Grabbed MPEC 2008-D07 - Comet C/2007 Y2 (McNaught) - see above Grabbed MPEC 2008-D08 - Comet C/2008 A1 (McNaught) - see above Grabbed MPEC 2008-D09 - Comet C/2008 C1 (Chen-Gao) - see above Grabbed MPEC 2008-D10 - Observations of Comets - see above

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