2009-07-18 Tracking News

Contents on 18 July '09

IAU Minor Planet Center
- NEOCP Activity -- one listing: 1 new
- New MPECs -- nine MPECs
Observers -- 55 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.

NEOCP Activity on 18 July '09

The MPC's NEO Confirmation Page has 1 listing: 1 new

When last checked at 2346 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new listing. This was a "one nighter." So far The Tracking News has counted a total of four 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 18 July '09

Minor Planet Electronic Circulars

As of last check at 2346 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-O06 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2009-O07 time-stamped "11:00 UT" - 2009 OF - see below
MPEC 2009-O08 time-stamped "12:50 UT" - 2009 OG - see below
MPEC 2009-O09 time-stamped "14:41 UT" - 2008 CJ116 - see below
MPEC 2009-O10 time-stamped "14:43 UT" - 2008 WK32 - see below
MPEC 2009-O11 time-stamped "20:56 UT" - Comet C/2009 K2 (Catalina) - see below
MPEC 2009-O12 time-stamped "21:00 UT" - Comet C/2009 K5 (McNaught) - see below
MPEC 2009-O13 time-stamped "21:04 UT" - Comet P/2009 L2 (Yang-Gao) - see below
MPEC 2009-O14 time-stamped "21:15 UT" - Observations of Comets

MPEC 2009-O14 - "21:15 UT" - Observations of Comets

CK09F050 C/2009 F5 (McNaught) from Castelmartini Obs. (July 12.84p2 & 14.86p3)
CK09E010 C/2009 E1 (Itagaki) from Moriyama Obs. (July 12.68p2), Schiaparelli Obs. (July 12.97p1), CAST Obs. (July 14.88p1), and Castelmartini Obs. (July 14.93-94p3)
CK08Q030 C/2008 Q3 (Garradd) from AAAA Buenos Aires Obs. (June 12.08-14p3, 13.06-09p3 & 18.02-05p2), Ageo Obs. (July 12.47-48p2), and Moriyama Obs. (July 14.48p2)
CK08Q010 C/2008 Q1 (Maticic) from Moriyama Obs. (July 14.54p2), Schiaparelli Obs. (July 15.88p1 & 15.94p1), and Posadas Obs. (July 16.90-91p3)
CK08P010 C/2008 P1 (Garradd) from Kiev Comet Station (July 10.01-02p3), Bootes Obs. (July 11.09-12p2 & 13.05-09p2), Schiaparelli Obs. (July 13.03p1 & 13.08p1), and Zonalunar Obs. (July 17.04p1)
CK08N010 C/2008 N1 (Holmes) from Atlante Obs. (July 13.99p3 & 15.94-95p3), CAST Obs. (July 14.87p1), Castelmartini Obs. (July 15.88p3), Schiaparelli Obs. (July 16.01p1 & 16.06p1), Posadas Obs. (July 17.01p3), and Petit Jean Mtn. South Obs. (PJMSO) (July 18.25-26p7)
CK08F75K C/2008 FK75 (Lemmon-Siding Spring) from Castelmartini Obs. (July 13.87p2 & 14.87p3), Moriyama Obs. (July 14.55-56p2), CAST Obs. (July 14.86p1), Schiaparelli Obs. (July 15.89p1 & 15.99p1), and Posadas Obs. (July 16.94-97p3)
CK07B020 C/2007 B2 (Skiff) from Los Campitos Obs. (July 11.17-18p3) and Perth Obs. (July 14.58-62p3)
CK06W030 C/2006 W3 (Christensen) from Ageo Obs. (July 5.55-56p2), Schiaparelli Obs. (July 13.03-07p2), RAS Obs. Mayhill (July 13.30-31p3), LINEAR (July 13.32-36p5), Tzec Maun Obs. Pingelly (July 13.74-75p2), Montcabre Obs. (July 13.88-89p3), Stixendorf Obs. (July 13.94p5), Castelmartini Obs. (July 13.94-95p3), Atlante Obs. (July 14.03-04p3, 16.05-06p3 & 17.98-99p3), Tzec Maun Obs. Mayhill (July 14.27-28p3, 15.44-45p3 & 17.40-43p4), CAST Obs. (July 14.89p1), Fiamene Obs. (July 14.92p1 & 16.87p1), Posadas Obs. (July 14.94p3), Zonalunar Obs. (July 14.94p1, 14.98p1, 15.02p1 & 15.07p1), Alicante Obs. (July 14.96p3 & 15.87-88p3), La Vara Obs. (July 14.97-98p3 & 15.96p3), Skylive Obs. (July 15.01-02p3, 16.86-87p2 & 17.12p2), Paus Obs. (July 15.93-95p3), Monte Deva Obs. (July 16.04-05p5), Gieres Obs. (July 16.91-95p2), Casasco Obs. (July 16.97-00p2), and PJMSO (July 18.39p6)
CK06S030 C/2006 S3 (LONEOS) from Moriyama Obs. (July 14.64-65p2), Tzec Maun Obs. Mayhill (July 15.44p3), and Schiaparelli Obs. (July 16.02p1 & 16.09p1)
CK06Q010 C/2006 Q1 (McNaught) from Ageo Obs. (July 12.59p1 & 12.63p1), CAST Obs. (July 14.86p1), Lumezzane Obs. (July 15.96p4), Schiaparelli Obs. (July 15.00p1 & 16.06p1), Monte Deva Obs. (July 16.02-03p5), Gieres Obs. (July 16.89p1 & 16.94p1), and Alicante Obs. (July 17.00-03p3)
CK05L030 C/2005 L3 (McNaught) from Schiaparelli Obs. (July 12.91p1 & 12.99p1), Moriyama Obs. (July 14.53p2), CAST Obs. (July 14.85p1), La Vara Obs. (July 14.92-93p3 & 15.93p3), and Posadas Obs. (July 16.92-93p3)
0219P 219P/LINEAR from Moriyama Obs. (July 14.59-60p2) and Lumezzane Obs. (July 15.97p4)
0217P 217P/LINEAR from Kiev Comet Station (July 9.99-00p2), Schiaparelli Obs. (July 13.07p2), Zvezdno Obshtestvo Obs. (July 15.07-09p4), Monte Deva Obs. (July 16.08-09p5), Atlante Obs. (July 16.21-22p3), Tzec Maun Obs. Mayhill (July 17.42-44p4), Alicante Obs. (July 18.06-07p3), and Skylive Obs. (July 18.11-12p2)
0199P 199P/Shoemaker 4 from Los Molinos Obs. (July 12.28-31p4) and Moriyama Obs. (July 14.66p2)
0169P 169P/NEAT from Tzec Maun Obs. Mayhill (July 13.26-27p3) and Castelmartini Obs. (July 15.86p3)
0158P 158P/Kowal-LINEAR from La Sagra Obs. (June 28.93-95p3) and Schiaparelli Obs. (July 15.91p1 & 15.97p1)
0116P 116P/Wild 4 from La Dehesilla Obs. (July 6.89-90p3) and Moriyama Obs. (July 14.47-48p2)
0065P 65P/Gunn from Schiaparelli Obs. (July 12.88p1), Tzec Maun Obs. Mayhill (July 13.14-15p3), Stixendorf Obs. (July 13.89p4), CAST Obs. (July 14.84p1), and La Vara Obs. (July 15.89-90p3)
0043P 43P/Wolf-Harrington from Chante-Perdrix Obs. (June 29.00-01p3) and Tzec Maun Obs. Mayhill (July 14.22-23p3)
0022P 22P/Kopff from Tzec Maun Obs. Pingelly (June 21.82p1, July 13.77-80p2 & 14.73-76p4), Stixendorf Obs. (July 13.95-96p4), Atlante Obs. (July 14.10-11p3 & 16.18-19p3), Moriyama Obs. (July 14.65-66p2), Skylive Obs. (July 15.02-03p3 & 18.11p2), Zvezdno Obshtestvo Obs. (July 15.06p3), RAS Obs. Moorook (July 15.69-70p3), Monte Deva Obs. (July 16.07-08p5), Casasco Obs. (July 17.01-03p2), El Maestrat Obs. (July 17.08-09p3), Tzec Maun Obs. Mayhill (July 17.30p1 & 17.37-39p2), and Alicante Obs. (July 18.07-08p3)

MPEC 2009-O13 - "21:04 UT" - Comet P/2009 L2 (Yang-Gao)

PK09L020 P/2009 L2 (Yang-Gao) from Kiev Comet Station (July 9.92-94p9), Linceo Obs. (July 11.95-97p3), Remanzacco Obs. (July 11.96p2), Schiaparelli Obs. (July 12.95p1 & 13.01p1), Zvezdno Obshtestvo Obs. (July 13.85-86p4), Stixendorf Obs. (July 13.92-93p4), El Condor Obs. (July 14.11-14p3 & 17.05-08p2), Cordell-Lorenz Obs. (July 14.18p1, 14.23p1 & 15.22-29p4), Tzec Maun Obs. Mayhill (July 14.28-29p3), CAST Obs. (July 14.87p1), Jaen Obs. (July 14.91-92p2), Castelmartini Obs. (July 14.91-92p3), La Vara Obs. (July 14.95-96p3 & 15.95p3), Paus Obs. (July 15.89-90p3), Lumezzane Obs. (July 15.95-96p4), Balzaretto Obs. (July 16.87-88p3), Posadas Obs. (July 16.98-99p3), LINEAR (July 17.22-26p5), Alicante Obs. (July 18.04-05p3), and PJMSO (July 18.27-32p6)

MPEC 2009-O12 - "21:00 UT" - Comet C/2009 K5 (McNaught)

CK09K050 C/2009 K5 (McNaught) from Los Campitos Obs. (July 13.97p3) and Perth Obs. (July 14.57-59p2)

MPEC 2009-O11 - "20:56 UT" - Comet C/2009 K2 (Catalina)

CK09K020 C/2009 K2 (Catalina) from Kiev Comet Station (July 9.90-91p3), Tzec Maun Obs. Mayhill (July 13.28p2 & 17.28-29p3), Moriyama Obs. (July 14.57p2), Jaen Obs. (July 15.03-04p2), Cordell-Lorenz Obs. (July 15.14-19p3 & 17.16-18p2), Castelmartini Obs. (July 15.90-91p3), Lumezzane Obs. (July 15.94-95p4), Schiaparelli Obs. (July 16.01p1 & 16.06p1), and Zvezdno Obshtestvo Obs. (July 16.84-86p5)

MPEC 2009-O10 - "14:43 UT" - 2008 WK32

K08W32K 2008 WK32 from the Siding Spring Survey (SSS) (July 17.43p1 & 18.43p1)

MPEC 2009-O09 - "14:41 UT" - 2008 CJ116

K08CB6J 2008 CJ116 from SSS (July 17.66p1 & 18.56p1)

MPEC 2009-O08 - "12:50 UT" - 2009 OG

K09O00G 2009 OG was discovered at 1713 UT on 17 July by SSS, which observed it at July 17.72-75p4 and 18.51p3. The discovery was confirmed by El Condor Obs. (July 18.09-12p4), CEAMIG-REA (July 18.13p3), Tiki Obs. (July 18.37-38p2), and Grove Creek Obs. (July 18.48-51p3).

MPEC 2009-O07 - "11:00 UT" - 2009 OF

K09O00F 2009 OF (risk-listed) was discovered at 0506 UT on 17 July by LINEAR, which observed it at July 17.21-24p4. The discovery was confirmed by CEAMIG-REA (July 18.10-11p3), Sandlot Obs. (July 18.13-15p5), Walnut Creek Obs. (July 18.20-21p3), and Tzec Maun Obs. Mayhill (July 18.26p2).

<< DOU on 18 July '09 >> MPEC 2009-O06 - "06:06 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K09M08N 2009 MN8 (small asteroid, arc=19 days, H=22.7 ~98m) from Magdalena Ridge Obs. (MRO) (July 17.43-44p3)
K09M00S 2009 MS (i=52.5°, arc=28 days, H=16.0 ~2.14 km, q=0.863 AU) from MRO (July 17.28-29p3)
K09L00X 2009 LX (Q=4.543 AU, arc=36 days, H=19.6 ~407m) from Rio Cuarto Obs. (July 17.38-39p3)
K08E07R 2008 ER7 (arc=2 opp, H=20.0 ~339m) from Schiaparelli Obs. (July 16.08p3)
Observations of other objects
K09O00C 2009 OC (arc=1 day, H=20.4 ~282m) from Faulkes Telescope South (July 17.56p4)
K09N00L 2009 NL (Q=4.710 AU, arc=4 days, H=19.9 ~355m) from Schiaparelli Obs. (July 16.04-05p5), El Condor Obs. (July 17.20-21p3), and Doc Greiner Research Obs. (DGRO) (July 17.22-23p10)
K09N00J 2009 NJ (arc=5 days, H=18.5 ~676m) from Balzaretto Obs. (July 16.92-93p3) and Walnut Creek Obs. (July 17.20-21p3)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.8 ~2.34 km) from Zonalunar Obs. (July 16.89p1) and DGRO (July 17.21-22p9)
K09M09C 2009 MC9 (arc=17 days, H=17.9 ~891m) from El Condor Obs. (July 17.02-03p3)
K09M01L 2009 ML1 (arc=24 days, H=19.3 ~467m) from Rio Cuarto Obs. (July 17.27-29p4)
K09K22J 2009 KJ22 (arc=47 days, H=19.9 ~355m) from Lumezzane Obs. (July 15.98p4) and Walnut Creek Obs. (July 17.31-32p3)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Walnut Creek Obs. (July 17.23-24p3)
K09J01K 2009 JK1 (arc=119 days, H=19.9 ~355m) from Schiaparelli Obs. (July 15.94-96p3)
K09F29Y 2009 FY29 (arc=113 days, H=19.9 ~355m) from MRO (July 17.44-45p3)
K05S25N 2005 SN25 (arc=4 opp, H=19.7 ~389m) from Herrenberg Obs. (July 16.87p3)
K05R06Q 2005 RQ6 (arc=2 opp, H=18.8 ~589m) from Mt. John Obs. (July 17.71-72p6)
K03C01R 2003 CR1 (arc=2 opp, H=19.8 ~371m) from Mt. John Obs. (July 17.44-45p4)
K02X14N 2002 XN14 (arc=2 opp, H=19.8 ~371m) from Mt. John Obs. (July 17.54p4 & 17.60-61p3)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from El Boalo (July 3.92-93p4), DGRO (July 17.17-18p40), and Atlante Obs. (July 17.92-93p3)
K01F90E 2001 FE90 (arc=2 opp, H=20.7 ~245m) from El Condor Obs. (July 17.15-19p3)
K01A50A 2001 AA50 (i=43.9°, arc=4 opp, H=18.4 ~708m) from LINEAR (July 17.37-41p5)
K00X44K 2000 XK44 (arc=4 opp, H=18.0 ~851m) from Rio Cuarto Obs. (July 17.35-36p3)
G3758 163758 2003 OS13 from Lumezzane Obs. (July 15.99p2)
G2483 162483 2000 PJ5 from Balzaretto Obs. (July 16.90-91p4) and Zonalunar Obs. (July 17.00p1)
F9402 159402 1999 AP10 from Rio Cuarto Obs. (July 17.23-25p3)
E3651 143651 2003 QO104 from El Condor Obs. (July 17.04-09p3)
52768 52768 1998 OR2 from El Condor Obs. (July 17.10-11p3)
24761 24761 Ahau (1993 BW2) from El Condor Obs. (July 17.12-14p3) and Atlante Obs. (July 18.03-04p3)
17274 17274 2000 LC16 from El Condor Obs. (July 17.05-09p3)
16960 16960 1998 QS52 from LINEAR (July 17.27-31p5)
15745 15745 1991 PM5 from LINEAR (July 17.22-26p5)
05626 5626 1991 FE from Atlante Obs. (July 18.01-02p3)
00433 433 Eros (1898 DQ) from Schiaparelli Obs. (July 16.02p1 & 16.07p1)

Observers on 18 July '09

A total of 55 observing facilities appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2009-O14 -- C/2008 Q3
`349`	Ageo Obs. in Japan, 3 in MPEC 2009-O14 -- C/2008 Q3, C/2006 W3, C/2006 Q1
`J10`	Alicante Obs. in Spain, 5 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2006 W3, C/2006 Q1, 217P, 22P
`J51`	Atlante Obs. in the Canary Islands, 7 in MPECs 2009-O06 & 2009-O14 -- C/2008 N1, C/2006 W3, 2002 LV, 24761, 5626, 217P, 22P
`A81`	Balzaretto Obs. in Italy, 3 in MPECs 2009-O06 & 2009-O13 -- 2009 NJ, P/2009 L2, 162483
`J05`	Bootes Obs., 1 in MPEC 2009-O14 -- C/2008 P1
`235`	CAST Obs. in Italy, 8 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2009 E1, C/2008 N1, C/2008 FK75, C/2006 W3, C/2006 Q1, C/2005 L3, 65P
`I77`	CEAMIG-REA in Brazil, 2 in MPECs 2009-O07 & 2009-O08 -- 2009 OG, 2009 OF
`B66`	Casasco Obs. in Italy, 2 in MPEC 2009-O14 -- C/2006 W3, 22P
`160`	Castelmartini Obs. in Italy, 8 in MPECs 2009-O11, 2009-O13 & 2009-O14 -- P/2009 L2, C/2009 K2, C/2009 F5, C/2009 E1, C/2008 N1, C/2008 FK75, C/2006 W3, 169P
`A77`	Chante-Perdrix Obs. in France, 1 in MPEC 2009-O14 -- 43P
`850`	Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-O11 & 2009-O13 -- P/2009 L2, C/2009 K2
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2009-O06 -- 2009 NL, 2009 NE, 2002 LV
`J21`	El Boalo, 1 in MPEC 2009-O06 -- 2002 LV
`I21`	El Condor Obs. in Argentina, 9 in MPECs 2009-O06, 2009-O08 & 2009-O13 -- 2009 OG, 2009 NL, 2009 MC9, P/2009 L2, 2001 FE90, 52768, 24761, 17274, 143651
`J19`	El Maestrat Obs. in Spain, 1 in MPEC 2009-O14 -- 22P
`E10`	Faulkes Telescope South in New South Wales, 1 in MPEC 2009-O06 -- 2009 OC
`B23`	Fiamene Obs. in Italy, 1 in MPEC 2009-O14 -- C/2006 W3
`B83`	Gieres Obs. in France, 2 in MPEC 2009-O14 -- C/2006 W3, C/2006 Q1
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-O08 -- 2009 OG
`240`	Herrenberg Obs. in Germany, 1 in MPEC 2009-O06 -- 2005 SN25
`J28`	Jaen Obs. in Spain, 2 in MPECs 2009-O11 & 2009-O13 -- P/2009 L2, C/2009 K2
`585`	Kiev Comet Station in the Ukraine, 4 in MPECs 2009-O11, 2009-O13 & 2009-O14 -- P/2009 L2, C/2009 K2, C/2008 P1, 217P
`704`	LINEAR in New Mexico, 6 in MPECs 2009-O06, 2009-O07, 2009-O13 & 2009-O14 -- 2009 OF, P/2009 L2, C/2006 W3, 2001 AA50, 16960, 15745
`212`	La Dehesilla Obs. in Spain, 1 in MPEC 2009-O14 -- 116P
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-O14 -- 158P
`J38`	La Vara Obs. in Spain, 4 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2006 W3, C/2005 L3, 65P
`J59`	Linceo Obs. in Spain, 1 in MPEC 2009-O13 -- P/2009 L2
`I36`	Los Campitos Obs. in Argentina, 2 in MPECs 2009-O12 & 2009-O14 -- C/2009 K5, C/2007 B2
`844`	Los Molinos Obs. in Uruguay, 1 in MPEC 2009-O14 -- 199P
`130`	Lumezzane Obs. in Italy, 6 in MPECs 2009-O06, 2009-O11, 2009-O13 & 2009-O14 -- P/2009 L2, 2009 KJ22, C/2009 K2, C/2006 Q1, 163758, 219P
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPEC 2009-O06 -- 2009 MS, 2009 MN8, 2009 FY29
`213`	Montcabre Obs. in Spain, 1 in MPEC 2009-O14 -- C/2006 W3
`945`	Monte Deva Obs. in Spain, 4 in MPEC 2009-O14 -- C/2006 W3, C/2006 Q1, 217P, 22P
`900`	Moriyama Obs. in Japan, 11 in MPECs 2009-O11 & 2009-O14 -- C/2009 K2, C/2009 E1, C/2008 Q3, C/2008 Q1, C/2008 FK75, C/2006 S3, C/2005 L3, 219P, 199P, 116P, 22P
`474`	Mt. John Obs. in New Zealand, 3 in MPEC 2009-O06 -- 2005 RQ6, 2003 CR1, 2002 XN14
`B49`	Paus Obs. in Spain, 2 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2006 W3
`322`	Perth Obs. in Western Australia, 2 in MPECs 2009-O12 & 2009-O14 -- C/2009 K5, C/2007 B2
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2008 N1, C/2006 W3
`J53`	Posadas Obs. in Spain, 6 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2008 Q1, C/2008 N1, C/2008 FK75, C/2006 W3, C/2005 L3
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-O14 -- C/2006 W3
`D90`	RAS Obs. Moorook in South Australia, 1 in MPEC 2009-O14 -- 22P
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2009-O13 -- P/2009 L2
`I20`	Rio Cuarto Obs. in Argentina, 4 in MPEC 2009-O06 -- 2009 ML1, 2009 LX, 2000 XK44, 159402
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-O07 -- 2009 OF
`204`	Schiaparelli Obs. in Italy, 18 in MPECs 2009-O06, 2009-O11, 2009-O13 & 2009-O14 -- 2009 NL, P/2009 L2, C/2009 K2, 2009 JK1, C/2009 E1, C/2008 Q1, C/2008 P1, C/2008 N1, C/2008 FK75, 2008 ER7, C/2006 W3, C/2006 S3, C/2006 Q1, C/2005 L3, 433, 217P, 158P, 65P
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2009-O08, 2009-O09 & 2009-O10 -- 2009 OG, 2008 WK32, 2008 CJ116
`B40`	Skylive Obs. in Italy, 3 in MPEC 2009-O14 -- C/2006 W3, 217P, 22P
`A71`	Stixendorf Obs. in Austria, 4 in MPECs 2009-O13 & 2009-O14 -- P/2009 L2, C/2006 W3, 65P, 22P
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2009-O08 -- 2009 OG
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 10 in MPECs 2009-O07, 2009-O11, 2009-O13 & 2009-O14 -- 2009 OF, P/2009 L2, C/2009 K2, C/2006 W3, C/2006 S3, 217P, 169P, 65P, 43P, 22P
`D25`	Tzec Maun Obs. Pingelly in Western Australia, 2 in MPEC 2009-O14 -- C/2006 W3, 22P
`G56`	Walnut Creek Obs. in northern California, 4 in MPECs 2009-O06 & 2009-O07 -- 2009 OF, 2009 NJ, 2009 KL2, 2009 KJ22
`J08`	Zonalunar Obs. in Spain, 4 in MPECs 2009-O06 & 2009-O14 -- 2009 NE, C/2008 P1, C/2006 W3, 162483
`A79`	Zvezdno Obshtestvo Obs. in Bulgaria, 4 in MPECs 2009-O11, 2009-O13 & 2009-O14 -- P/2009 L2, C/2009 K2, 217P, 22P

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

Impact Risk Monitoring on 18 July '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2346 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 OF	JPL Sentry	1501	2039-2053	3	3.8e-07	-4.31	-4.44	0	JPL: "Analysis based on 17 observations spanning 1.0448 days (2009-Jul-17.21281 to 2009-Jul-18.25762)." Diameter approximately 0.200 km. from mean, weighted H=21.1.

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 July '09

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

2140	Grabbed MPEC 2009-O14 - Observations of Comets - see above
2111	Grabbed MPEC 2009-O11 - Comet C/2009 K2 (Catalina) - see above Grabbed MPEC 2009-O12 - Comet C/2009 K5 (McNaught) - see above Grabbed MPEC 2009-O13 - Comet P/2009 L2 (Yang-Gao) - see above Noted that the NEOCP has become active
1501	Noted that JPL Sentry has posted 2009 OF as an impact risk - see above Grabbed MPEC 2009-O06 - Daily Orbit Update - see above Grabbed MPEC 2009-O07 - 2009 OF - see above Grabbed MPEC 2009-O08 - 2009 OG - see above Grabbed MPEC 2009-O09 - 2008 CJ116 - see above Grabbed MPEC 2009-O10 - 2008 WK32 - see above Noted that the NEOCP has become empty

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