2008-07-29 Tracking News

Contents on 29 July '08

IAU Minor Planet Center
- NEOCP Activity -- twelve listings: 6 new, 6 updated
- New MPECs -- eight MPECs
Observers -- 67 observing facilities
Impact Risk Monitoring -- five 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 29 July '08

The MPC's NEO Confirmation Page has 12 listings: 6 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and six updated listings. Of these, eleven were "one nighters." So far The Tracking News has counted a total of eighteen 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 29 July '08

Minor Planet Electronic Circulars

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

MPEC 2008-O40 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-O41 time-stamped "13:59 UT" - 2008 OV2 - see below
MPEC 2008-O42 time-stamped "14:05 UT" - 2008 OX2 - see below
MPEC 2008-O43 time-stamped "14:09 UT" - 2008 OY2 - see below
MPEC 2008-O44 time-stamped "17:34 UT" - Comet 51P/Harrington - see below
MPEC 2008-O45 time-stamped "17:46 UT" - Comet P/2008 L2 (Hill) - see below
MPEC 2008-O46 time-stamped "17:52 UT" - Comet C/2008 N1 (Holmes) - see below
MPEC 2008-O47 time-stamped "18:16 UT" - Observations of Comets

MPEC 2008-O47 - "18:16 UT" - Observations of Comets

CK08J060 C/2008 J6 (Hill) from Geisei Obs. (July 7.68p1), Schiaparelli Obs. (July 10.03p2), Eschenberg Obs. (July 24.92-93p3), Posadas Obs. (July 24.99p3), Moriyama Obs. (July 25.68-69p2 & 27.69-70p2), Vitebsk Obs. (July 26.94-95p2), Chante-Perdrix Obs. (July 26.95p1), Paus Obs. (July 27.97p1), and Iluro Obs. (July 28.10-11p3)
CK08J050 C/2008 J5 (Garradd) from the Siding Spring Survey (SSS) (May 30.75p1 & June 27.73p1), Geisei Obs. (June 12.74-76p2 & 29.69p1), Remanzacco Obs. (July 24.89p1), Moriyama Obs. (July 25.55-56p2), and Chante-Perdrix Obs. (July 27.88p3)
PK08J020 P/2008 J2 (Beshore) from Geisei Obs. (June 23.49p2) and El Leoncito Obs. (July 12.07-09p2)
CK08J010 C/2008 J1 (Boattini) from Bisei Spaceguard Center (June 16.57-58p6), Geisei Obs. (June 29.59-60p2, 30.69p1, July 4.63p1, 7.68p1, 13.64p1, 15.62-64p3 & 20.65-69p4), CAST Obs. (July 22.84p1), Vitebsk Obs. (July 22.93-94p5 & 25.92-93p5), Monte Deva Obs. (July 22.95-96p5 & 27.02-03p5), La Vara Obs. (July 23.04-05p3 & 29.00p3), Carmelita Obs. (July 23.86p3), RAS Obs. Mayhill (July 24.33p2), Moriyama Obs. (July 24.64p2 & 26.67-68p2), San Marcello Pistoiese Obs. (July 24.83p3), Gretz-Armainvilliers Obs. (July 24.90-94p3), Posadas Obs. (July 24.97-98p3 & 27.05-06p3), Masquefa Obs. (July 25.99-01p3), Chante-Perdrix Obs. (July 26.90p1), Iluro Obs. (July 28.10p3), and Petit Jean Mtn. South Obs. (PJMSO) (July 28.36-37p6)
CK08H010 C/2008 H1 (LINEAR) from San Marcello Pistoiese Obs. (July 23.84-85p3) and Lumezzane Obs. (July 25.86-87p3)
CK08E030 C/2008 E3 (Garradd) from SSS (May 31.59p1 & June 27.64p1) and Kambah Obs. (July 14.72-73p2)
CK08A010 C/2008 A1 (McNaught) from Ageo Obs. (March 22.42p2), Beta Orionis Obs. (July 24.93p3), and Gisborne Obs. (July 27.75-77p3)
CK07W030 C/2007 W3 (LINEAR) from Schiaparelli Obs. (June 26.00p1, 26.05p1, July 19.88p1 & 19.96p1), CAST Obs. (July 15.84p1), and Moriyama Obs. (July 24.56p2)
CK07W010 C/2007 W1 (Boattini) from Geisei Obs. (July 7.76p1, 15.76-79p3 & 20.72-76p5), Vega del Thader Obs. (July 12.16-17p11), Iga-Ueno Obs. (July 12.79p4 & 19.76p5), Paus Obs. (July 23.12-15p5), Moriyama Obs. (July 25.75p2), Montcabre Obs. (July 27.07-08p3), Masquefa Obs. (July 27.08-10p3), PJMSO (July 28.38-39p6), La Vara Obs. (July 29.09p3), and Nazaret Obs. (July 29.16-22p5)
CK07N030 C/2007 N3 (Lulin) from Schiaparelli Obs. (June 24.04-05p2, 25.05-06p2, July 9.94p2 & 10.01p2), Geisei Obs. (June 29.67-68p2, 30.71p1, July 3.73p1, 4.62p1, 7.61-62p2, 13.66p1, 13.70p1, 15.65p1 & 20.68p2), Gisborne Obs. (July 22.42-43p3), Ageo Obs. (July 22.70p2), Montcabre Obs. (July 22.87-89p3), CAST Obs. (July 22.89p1), Monte Deva Obs. (July 22.93-94p5 & 26.99-00p5), Linceo Obs. (July 22.97-00p3), Nazaret Obs. (July 22.97-99p5, 24.01-02p4, 26.95-96p4, 27.95-97p4 & 28.98-99p5), Bisei (July 23.59-61p4), Rodeno Obs. (July 23.90-91p3 & 24.93p3), Ingenio Obs. (July 23.93p3, 26.97-98p2 & 28.94-95p3), RAS Mayhill (July 24.21p1, 24.27p1, 25.23p1 & 25.36p1), Moriyama Obs. (July 24.60p2), Vega del Thader Obs. (July 24.91-92p15), Beta Orionis Obs. (July 25.01p4 & 28.03-04p3), Masquefa Obs. (July 25.96-98p3 & 26.98p3), Hobbs Obs. (July 26.13-17p4), Vitebsk Obs. (July 26.89-90p4), Posadas Obs. (July 26.00-01p3), Vicksburg Obs. (July 28.28p3), La Vara Obs. (July 29.02p3), and Nagano Obs. (July 29.51-52p3)
CK07J21A C/2007 JA21 (LINEAR) from Schiaparelli Obs. (June 25.97p1 & 26.04p1) and Lumezzane Obs. (July 10.92p1)
CK07G010 C/2007 G1 (LINEAR) from Schiaparelli Obs. (June 23.94p1, 24.01p1, 24.95-97p2, 27.90p1 & 27.96p1), El Leoncito Obs. (July 10.02-04p3, 11.03-04p3 & 12.05-07p3), Moriyama Obs. (July 24.49p2), Gisborne Obs. (July 25.37-42p3), SSS (July 26.47p1), and Beta Orionis Obs. (July 28.01p2)
CK07B020 C/2007 B2 (Skiff) from SSS (July 4.40p1), El Leoncito Obs. (July 10.94-95p3), Beta Orionis Obs. (July 24.97p2), and Moriyama Obs. (July 26.48-49p2)
CK06W030 C/2006 W3 (Christensen) from Vitebsk Obs. (July 22.95-96p3), La Vara Obs. (July 23.07-08p3 & 29.08p3), Rodeno Obs. (July 24.02-03p3), Moriyama Obs. (July 25.73p2), Hamamatsu-Yuto Obs. (July 25.77-78p4), Masquefa Obs. (July 26.03p3), Jaen Obs. (July 27.11-13p4), and PJMSO (July 28.40-41p5)
CK06V010 C/2006 V1 (Catalina) from SSS (June 5.77p1 & July 25.58p1) and Beta Orionis Obs. (July 25.04p2)
CK06S030 C/2006 S3 (LONEOS) from Buchloe Obs. (July 10.95p3), PJMSO (July 11.29-31p5), and Naef Obs. (July 28.95-98p2)
CK06Q010 C/2006 Q1 (McNaught) from SSS (June 25.43p1), Moriyama Obs. (July 19.48p2 & 26.46p2), and Yatsuka Obs. (July 19.49p2)
CK06O02F C/2006 OF2 (Broughton) from Geisei Obs. (June 29.74p1, July 7.73p1, 13.67p1 & 20.70p1), Iga-Ueno Obs. (July 19.77p1), Monte Deva Obs. (July 22.00-01p5), Carmelita Obs. (July 24.01-02p3), Rodeno Obs. (July 24.03-04p3), Vega del Thader Obs. (July 25.15-16p12), Moriyama Obs. (July 25.71-72p2), Hamamatsu-Yuto Obs. (July 25.75-76p3), Masquefa Obs. (July 26.06-08p3), Jaen Obs. (July 27.14-15p4), Posadas Obs. (July 27.15p3), El Guijo Obs. (July 28.07-09p3), PJMSO (July 28.39-40p6), and La Vara Obs. (July 29.06-07p3)
CK06K040 C/2006 K4 (NEAT) from SSS (May 16.40p1 & 31.36p1) and Kambah Obs. (July 5.40-41p2)
CK05S040 C/2005 S4 (McNaught) from Schiaparelli Obs. (June 25.00p1), Paus Obs. (July 22.88p1), and Moriyama Obs. (July 24.58p2)
CK05L030 C/2005 L3 (McNaught) from Geisei Obs. (June 23.49-50p2), Schiaparelli Obs. (June 23.90-95p3, July 19.89p1 & 19.97p1), Remanzacco Obs. (July 10.89p1), Hamamatsu-Yuto Obs. (July 22.47-49p4, 25.54-55p4 & 27.52-53p3), Carmelita Obs. (July 22.84-85p3), CAST Obs. (July 22.88p1), Monte Deva Obs. (July 22.89-90p5 & 26.96-97p5), Sant Cugat del Valles Obs. (July 22.90-94p3), La Vara Obs. (July 22.97-98p3 & 28.93-96p3), Rodeno Obs. (July 23.87-88p3 & 24.87-88p3), Moriyama Obs. (July 24.54-55p2), Alginet Obs. (July 25.87p3), Masquefa Obs. (July 25.88-91p3), Yatsuka Obs. (July 26.49-50p3), Vitebsk Obs. (July 26.86-87p3), Posadas Obs. (July 26.91-94p3), and Nazaret Obs. (July 27.87-90p5 & 28.86-90p4)
0187P 187P/LINEAR from Schiaparelli Obs. (June 25.95p1), Buchloe Obs. (July 4.91p1), and Moriyama Obs. (July 25.53p2 & 26.50-51p2)
0186P 186P/Garradd from El Leoncito Obs. (July 10.04-06p3 & 11.05-06p2) and Cristo Rey Obs. (July 16.01p1)
0079P 79P/du Toit-Hartley from SSS (June 26.43p1, 29.41p1 & July 4.40p1)
0068P 68P/Klemola from Schiaparelli Obs. (June 23.92p1 & 23.98p1), Alginet Obs. (July 22.86-87p3), Carmelita Obs. (July 22.87-88p3), Moriyama Obs. (July 24.52-53p2), and Rodeno Obs. (July 24.90-92p2)
0067P 67P/Churyumov-Gerasimenko from Moriyama Obs. (July 25.64-65p2), Montcabre Obs. (July 26.01-02p3), Masquefa Obs. (July 27.04-05p3), and Nazaret Obs. (July 27.09-11p4, 28.00-03p4 & 29.01-03p3)
0061P 61P/Shajn-Schaldach from Nazaret Obs. (July 22.20p2) and the Catalina Sky Survey (CSS) (July 28.40-42p4)
0059P 59P/Kearns-Kwee from Malaga Obs. (July 9.14p1) and Skylive Obs. (July 28.07-11p4 & 29.05-09p3)
0047P 47P/Ashbrook-Jackson from SSS (June 7.72p1), Moriyama Obs. (July 25.66-67p2), Montcabre Obs. (July 25.99-00p3), Masquefa Obs. (July 26.00-02p3), Monte Deva Obs. (July 27.00-01p5), and Nazaret Obs. (July 29.09p3)
0046P 46P/Wirtanen from Vega del Thader Obs. (June 15.89p2) and Schiaparelli Obs. (June 23.89-90p2)
0026P 26P/Grigg-Skjellerup from Schiaparelli Obs. (June 24.00-04p2, July 9.90p1 & 9.96p1) and Vitebsk Obs. (July 25.86-87p2)
0019P 19P/Borrelly from Moriyama Obs. (July 25.77-78p2) and Ageo Obs. (July 27.77-78p3)
0015P 15P/Finlay from Geisei Obs. (July 7.78p1 & 15.79p1), Iga-Ueno Obs. (July 19.78p1), and Moriyama Obs. (July 25.76p2)
0006P 6P/D'Arrest from Geisei Obs. (June 23.51p2, July 7.66p1, 13.68p1, 15.68p1 & 20.68p1), Schiaparelli Obs. (June 23.99-03p2, July 9.93p1 & 9.97-98p2), Masia Cal Maciarol Modul 8 (MCM8) (June 29.03p3), Iga-Ueno Obs. (July 11.55p3), Four Winds Obs. (July 16.25-26p4 & 28.17-20p4), Vallauris Obs. (July 21.90-95p3), Montcabre Obs. (July 22.85p3, 25.88p2, 25.96p1 & 27.04p3), CAST Obs. (July 22.87p1), Alginet Obs. (July 22.87-88p3 & 25.88-89p3), Chante-Perdrix Obs. (July 22.88p1), Nazaret Obs. (July 22.90-91p4, 23.94p4, 26.93-94p4, 27.93-94p4 & 28.92-93p4), Vitebsk Obs. (July 22.90-91p6, 25.88-89p5 & 26.91-92p4), Monte Deva Obs. (July 22.91-92p5 & 26.98-99p5), Paus Obs. (July 22.91-92p3, 25.93p4 & 27.86-89p4), Carmelita Obs. (July 22.92p3 & 23.92-93p3), Linceo Obs. (July 22.95-96p3), Iluro Obs. (July 22.97p3), Hamamatsu-Yuto Obs. (July 23.63-65p4 & 27.54-56p5), Rodeno Obs. (July 23.89-90p3 & 24.95p3), Moriyama Obs. (July 24.62p2), Vega del Thader Obs. (July 24.88-90p23), Posadas Obs. (July 24.95-96p3 & 26.98-99p3), PJMSO (July 25.30-32p7 & 28.29-32p7), Balzaretto Obs. (July 25.87-88p4), Masquefa Obs. (July 25.93-96p3), Hobbs Obs. (July 26.14-18p4), Pla D'Arguines Obs. (July 26.92-94p3), Montana Blanca Obs. (July 26.93-94p3), Ingenio Obs. (July 26.96p2 & 28.87-88p3), Inastars Obs. (July 27.85p4), Vicksburg Obs. (July 28.17-18p2), Gisborne Obs. (July 28.50-52p3), Stammersdorf Obs. (July 28.91-92p5), and La Vara Obs. (July 29.03p3)

MPEC 2008-O46 - "17:52 UT" - Comet C/2008 N1 (Holmes)

CK08N010 C/2008 N1 (Holmes) (i=115.5°, q=2.783 AU, TP=2009 Sept. 25.216 TT) from Geisei Obs. (July 26.62p2), Chante-Perdrix Obs. (July 26.91-93p4), CSS (July 28.31-39p7), Naef Obs. (July 28.95-99p3), KLENOT (July 28.00-01p9), and La Vara Obs. (July 29.04-05p3)

MPEC 2008-O45 - "17:46 UT" - Comet P/2008 L2 (Hill)

PK08L020 P/2008 L2 (Hill) (q=2.317 AU, Q=9.641 AU, TP=2008 Aug. 18.7158 TT) from Vitebsk Obs. (July 25.95-96p2), Moriyama Obs. (July 27.67-68p2), and KLENOT (July 29.03p6)

MPEC 2008-O44 - "17:34 UT" - Comet 51P/Harrington

P 6.77 P 6.77 (q=1.688 AU, Q=5.719 AU, TP=2008 June 18.43364 TT)
0051P 51P/Harrington (q=1.572 AU, Q=5.594 AU, TP=1994 Aug. 23.23725 TT) from CSS (July 28.43-45p4) and KLENOT (July 29.06-07p12)

MPEC 2008-O43 - "14:09 UT" - 2008 OY2

K08O02Y 2008 OY2 (risk-listed, Q=4.240 AU, Earth MOID=1.0 LD, H=27.2 ~12m) was discovered at 1739 UT on 28 July by SSS, which observed it at July 28.74p10. The discovery was confirmed by KLENOT (July 28.94p5), Alter Satzberg Obs. (July 28.98-99p3), and the Mt. Lemmon Survey (MLS) (July 29.29p3). This object is now within ten lunar distances (LD) of Earth, reaching 3.1 LD on 28 July.

MPEC 2008-O42 - "14:05 UT" - 2008 OX2

K08O02X 2008 OX2 (risk-listed, q=0.377 AU, H=20.2 ~309m) was discovered at 1012 UT on 28 July by MLS, which observed it at July 28.43p4, 29.27-28p3, and 29.39-40p4. The discovery was confirmed by KLENOT (July 28.99p2).

MPEC 2008-O41 - "13:59 UT" - 2008 OV2

K08O02V 2008 OV2 (H=20.4 ~282m) was discovered at 0811 UT on 28 July by MLS, which observed it at July 28.34-35p4, 28.42-43p4, and 29.34-39p6. The discovery was confirmed by KLENOT (July 28.96-97p5).

<< DOU on 29 July '08 >> MPEC 2008-O40 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08O01O 2008 OO1 (small asteroid, arc=2 days, H=24.6 ~41m) from Remanzacco Obs. (July 28.01-06p4) and SSS (July 28.55p1 & 28.76p1)
K08O00O 2008 OO (arc=3 days, H=19.7 ~389m) from KLENOT (July 28.89p7)
K08N03O 2008 NO3 (Q=4.650 AU, arc=14 days, H=18.7 ~616m) from SSS (July 28.39-41p2)
Observations of small asteroids (H>22.0)
K08O00M 2008 OM (arc=3 days, H=22.4 ~112m) from SSS (July 28.74p1), KLENOT (July 28.90p4), and Mirasteilas Obs. (July 28.98-01p3)
Observations of other objects
K08O01X 2008 OX1 (arc=2 days, H=21.4 ~178m) from SSS (July 26.55-58p4 & 28.75p4), Hamamatsu-Yuto Obs. (July 28.76-79p5), and Alter Satzberg Obs. (July 28.83-85p5)
K08O00N 2008 ON (arc=3 days, H=20.3 ~295m) from SSS (July 28.83p1)
K08N01S 2008 NS1 (Q=4.337 AU, arc=23 days, H=17.3 ~1.17 km) from SSS (July 28.36p1)
K08N00B 2008 NB (arc=28 days, H=19.0 ~537m) from Mirasteilas Obs. (July 28.94-96p3)
K08M01U 2008 MU1 (i=40.8°, arc=28 days, H=19.7 ~389m) from Santa Mama Obs. (July 27.93-94p3) and PJMSO (July 28.27-28p7)
K08M01R 2008 MR1 (arc=29 days, H=18.5 ~676m) from KLENOT (July 29.04-05p6)
K08L16W 2008 LW16 (arc=43 days, H=19.8 ~371m) from Tiki Obs. (July 28.40p1 & 28.46p1)
K08G00F 2008 GF (arc=117 days, H=20.7 ~245m) from Astronomical Research Obs. (ARO) (July 27.10-13p3)
K05R34C 2005 RC34 (arc=2 opp, H=19.7 ~389m) from North Obs. (July 26.96p3), Iluro Obs. (July 28.05p3), PJMSO (July 28.32-33p7), and Hamamatsu-Yuto Obs. (July 28.74-75p4)
K03O04B 2003 OB4 (Q=4.516 AU, arc=2 opp, H=19.2 ~490m) from PJMSO (July 28.28-29p5)
K01T45A 2001 TA45 (arc=4 opp, H=19.1 ~513m) from PJMSO (July 28.34p5)
H4050 174050 2002 CC19 from Santa Mama Obs. (July 27.90-92p7)
G4400 164400 2005 GN59 from Iluro Obs. (July 28.02-04p3)
G2186 162186 1999 OP3 from Naef Obs. (July 28.96-99p3)
D7170 137170 1999 HF1 from Santa Mama Obs. (July 27.85-86p6)
A5140 105140 2000 NL10 from Inastars Obs. (July 28.85-86p3)
90403 90403 2003 YE45 from Dresden Obs. (July 27.84-86p6) and Santa Mama Obs. (July 27.87-89p8)
35107 35107 1991 VH from Santa Mama Obs. (July 27.82-84p8) and Stonegate Obs. (July 28.09-17p4)
08567 8567 1996 HW1 from Iluro Obs. (July 28.06p3) and PJMSO (July 28.35-36p5)
05332 5332 1990 DA from Iluro Obs. (July 28.12-13p2)

Observers on 29 July '08

A total of 67 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 3 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, 19P
`J97`	Alginet Obs. in Spain, 3 in MPEC 2008-O47 -- C/2005 L3, 68P, 6P
`B03`	Alter Satzberg Obs. in Austria, 2 in MPECs 2008-O40 & 2008-O43 -- 2008 OY2, 2008 OX1
`H55`	Astronomical Research Obs. in Illinois, 1 in MPEC 2008-O40 -- 2008 GF
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2008-O47 -- 6P
`I32`	Beta Orionis Obs. in Argentina, 5 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 V1
`300`	Bisei Spaceguard Center in Japan, 2 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3
`215`	Buchloe Obs. in Germany, 2 in MPEC 2008-O47 -- C/2006 S3, 187P
`235`	CAST Obs. in Italy, 5 in MPEC 2008-O47 -- C/2008 J1, C/2007 W3, C/2007 N3, C/2005 L3, 6P
`B20`	Carmelita Obs. in Spain, 5 in MPEC 2008-O47 -- C/2008 J1, C/2006 OF2, C/2005 L3, 68P, 6P
`703`	Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2008-O44, 2008-O46 & 2008-O47 -- C/2008 N1, 61P, 51P
`A77`	Chante-Perdrix Obs. in France, 5 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J6, C/2008 J5, C/2008 J1, 6P
`I31`	Cristo Rey Obs. in Argentina, 1 in MPEC 2008-O47 -- 186P
`639`	Dresden Obs. in Germany, 1 in MPEC 2008-O40 -- 90403
`J27`	El Guijo Obs. in Spain, 1 in MPEC 2008-O47 -- C/2006 OF2
`808`	El Leoncito Obs. in Argentina, 4 in MPEC 2008-O47 -- P/2008 J2, C/2007 G1, C/2007 B2, 186P
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2008-O47 -- C/2008 J6
`762`	Four Winds Obs. in Michigan, 1 in MPEC 2008-O47 -- 6P
`372`	Geisei Obs. in Japan, 11 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J6, C/2008 J5, P/2008 J2, C/2008 J1, C/2007 W1, C/2007 N3, C/2006 OF2, C/2005 L3, 15P, 6P
`E94`	Gisborne Obs., 4 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, C/2007 G1, 6P
`A07`	Gretz-Armainvilliers Obs. in France, 1 in MPEC 2008-O47 -- C/2008 J1
`379`	Hamamatsu-Yuto Obs. in Japan, 6 in MPECs 2008-O40 & 2008-O47 -- 2008 OX1, C/2006 W3, C/2006 OF2, 2005 RC34, C/2005 L3, 6P
`750`	Hobbs Obs. in Wisconsin, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
`D78`	Iga-Ueno Obs. in Japan, 4 in MPEC 2008-O47 -- C/2007 W1, C/2006 OF2, 15P, 6P
`B19`	Iluro Obs. in Spain, 7 in MPECs 2008-O40 & 2008-O47 -- C/2008 J6, C/2008 J1, 2005 RC34, 164400, 8567, 5332, 6P
`B15`	Inastars Obs. in Germany, 2 in MPECs 2008-O40 & 2008-O47 -- 105140, 6P
`J39`	Ingenio Obs. in the Canary Islands, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
`J28`	Jaen Obs. in Spain, 2 in MPEC 2008-O47 -- C/2006 W3, C/2006 OF2
`246`	KLENOT in the Czech Republic, 9 in MPECs 2008-O40, 2008-O41, 2008-O42, 2008-O43, 2008-O44, 2008-O45 & 2008-O46 -- 2008 OY2, 2008 OX2, 2008 OV2, 2008 OO, 2008 OM, C/2008 N1, 2008 MR1, P/2008 L2, 51P
`415`	Kambah Obs. in the Australian Capital Territory, 2 in MPEC 2008-O47 -- C/2008 E3, C/2006 K4
`J38`	La Vara Obs. in Spain, 8 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 6P
`J59`	Linceo Obs. in Spain, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
`130`	Lumezzane Obs. in Italy, 2 in MPEC 2008-O47 -- C/2008 H1, C/2007 JA21
`J40`	Malaga Obs. in Spain, 1 in MPEC 2008-O47 -- 59P
`A02`	Masia Cal Maciarol Modul 8 in Spain, 1 in MPEC 2008-O47 -- 6P
`232`	Masquefa Obs. in Spain, 9 in MPEC 2008-O47 -- C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 67P, 47P, 6P
`B67`	Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-O40 -- 2008 OM, 2008 NB
`J46`	Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-O47 -- 6P
`213`	Montcabre Obs. in Spain, 5 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, 67P, 47P, 6P
`945`	Monte Deva Obs. in Spain, 6 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3, C/2006 OF2, C/2005 L3, 47P, 6P
`900`	Moriyama Obs. in Japan, 21 in MPECs 2008-O45 & 2008-O47 -- P/2008 L2, C/2008 J6, C/2008 J5, C/2008 J1, C/2007 W3, C/2007 W1, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 W3, C/2006 Q1, C/2006 OF2, C/2005 S4, C/2005 L3, 187P, 68P, 67P, 47P, 19P, 15P, 6P
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2008-O41, 2008-O42 & 2008-O43 -- 2008 OY2, 2008 OX2, 2008 OV2
`A13`	Naef Obs. in Switzerland, 3 in MPECs 2008-O40, 2008-O46 & 2008-O47 -- C/2008 N1, C/2006 S3, 162186
`D81`	Nagano Obs., 1 in MPEC 2008-O47 -- C/2007 N3
`J47`	Nazaret Obs. in Spain, 7 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, C/2005 L3, 67P, 61P, 47P, 6P
`J69`	North Obs. in England, 1 in MPEC 2008-O40 -- 2005 RC34
`B49`	Paus Obs. in Spain, 4 in MPEC 2008-O47 -- C/2008 J6, C/2007 W1, C/2005 S4, 6P
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPECs 2008-O40 & 2008-O47 -- 2008 MU1, C/2008 J1, C/2007 W1, C/2006 W3, C/2006 S3, C/2006 OF2, 2005 RC34, 2003 OB4, 2001 TA45, 8567, 6P
`941`	Pla D'Arguines Obs. in Spain, 1 in MPEC 2008-O47 -- 6P
`J53`	Posadas Obs. in Spain, 6 in MPEC 2008-O47 -- C/2008 J6, C/2008 J1, C/2007 N3, C/2006 OF2, C/2005 L3, 6P
`H06`	RAS Obs. Mayhill in New Mexico, 2 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3
`473`	Remanzacco Obs. in Italy, 3 in MPECs 2008-O40 & 2008-O47 -- 2008 OO1, C/2008 J5, C/2005 L3
`939`	Rodeno Obs. in Spain, 6 in MPEC 2008-O47 -- C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 68P, 6P
`104`	San Marcello Pistoiese Obs. in Italy, 2 in MPEC 2008-O47 -- C/2008 J1, C/2008 H1
`B61`	Sant Cugat del Valles Obs. in Spain, 1 in MPEC 2008-O47 -- C/2005 L3
`B38`	Santa Mama Obs. in Italy, 5 in MPEC 2008-O40 -- 2008 MU1, 90403, 35107, 174050, 137170
`204`	Schiaparelli Obs. in Italy, 12 in MPEC 2008-O47 -- C/2008 J6, C/2007 W3, C/2007 N3, C/2007 JA21, C/2007 G1, C/2005 S4, C/2005 L3, 187P, 68P, 46P, 26P, 6P
`E12`	Siding Spring Survey (SSS) in New South Wales, 16 in MPECs 2008-O40, 2008-O43 & 2008-O47 -- 2008 OY2, 2008 OX1, 2008 OO1, 2008 ON, 2008 OM, 2008 NS1, 2008 NO3, C/2008 J5, C/2008 E3, C/2007 G1, C/2007 B2, C/2006 V1, C/2006 Q1, C/2006 K4, 79P, 47P
`B40`	Skylive Obs. in Italy, 1 in MPEC 2008-O47 -- 59P
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2008-O47 -- 6P
`H67`	Stonegate Obs. in Michigan, 1 in MPEC 2008-O40 -- 35107
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-O40 -- 2008 LW16
`B51`	Vallauris Obs. in France, 1 in MPEC 2008-O47 -- 6P
`J70`	Vega del Thader Obs. in Spain, 5 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, C/2006 OF2, 46P, 6P
`H47`	Vicksburg Obs. in Mississippi, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
`B42`	Vitebsk Obs. in Belarus, 8 in MPECs 2008-O45 & 2008-O47 -- P/2008 L2, C/2008 J6, C/2008 J1, C/2007 N3, C/2006 W3, C/2005 L3, 26P, 6P
`367`	Yatsuka Obs., 2 in MPEC 2008-O47 -- C/2006 Q1, C/2005 L3

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

Impact Risk Monitoring on 29 July '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
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 OY2	JPL Sentry	1636	2091	1	1.9e-08	-9.06	-9.06	0	JPL: "Analysis based on 20 observations spanning .55592 days (2008-Jul-28.73553 to 2008-Jul-29.29145)." Diameter approximately 0.012 km. from mean, weighted H=27.2.

2008 OX2	JPL Sentry	1636	2016-2108	82	2.9e-07	-4.07	-4.31	0	JPL: "Analysis based on 13 observations spanning .97399 days (2008-Jul-28.42552 to 2008-Jul-29.39951)." Diameter approximately 0.259 km. from mean, weighted H=20.6.

2008 OO1	JPL Sentry	1417	2107	1	7.8e-07	-6.21	-6.21	0	JPL: "Analysis based on 25 observations spanning 2.2057 days (2008-Jul-26.55201 to 2008-Jul-28.75769)." Diameter approximately 0.040 km. from mean, weighted H=24.7.

2008 OO	NEODyS	1634	2062-2088	7	1.12e-06	-3.29	-3.38	0	NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/07/28.895."
2008 OO	JPL Sentry	1417	2075-2108	26	6.3e-07	-3.63	-4.25	0	JPL: "Analysis based on 51 observations spanning 2.8024 days (2008-Jul-26.09211 to 2008-Jul-28.89446)." Diameter approximately 0.397 km. from mean, weighted H=19.7.

2008 NO3	JPL Sentry	1417	R E M O V E D						JPL: Risk listing removed at 0849 UTC.

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 29 July '08

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

1929	Grabbed MPEC 2008-O44 - Comet 51P/Harrington - see above Grabbed MPEC 2008-O45 - Comet P/2008 L2 (Hill) - see above Grabbed MPEC 2008-O46 - Comet C/2008 N1 (Holmes) - see above Grabbed MPEC 2008-O47 - Observations of Comets - see above
1636	Noted that JPL Sentry has posted 2008 OX2 as an impact risk - see above Noted that JPL Sentry has posted 2008 OY2 as an impact risk - see above
1634	Noted that NEODyS has updated its 2008 OO risk assessment - see above
1417	Noted that JPL Sentry has removed 2008 NO3 as an impact risk - see above Noted that JPL Sentry has updated its 2008 OO risk assessment - see above Noted that JPL Sentry has updated its 2008 OO1 risk assessment - see above Grabbed MPEC 2008-O40 - Daily Orbit Update - see above Grabbed MPEC 2008-O41 - 2008 OV2 - see above Grabbed MPEC 2008-O42 - 2008 OX2 - see above Grabbed MPEC 2008-O43 - 2008 OY2 - see above

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