2009-07-28 Tracking News

Contents on 28 July '09

IAU Minor Planet Center
- NEOCP Activity -- five listings: 5 updated
- New MPECs -- five MPECs
Observers -- nineteen 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 28 July '09

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of eleven 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 28 July '09

Minor Planet Electronic Circulars

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

MPEC 2009-O41 time-stamped "03:01 UT" - 2008 FC76 - see below
MPEC 2009-O42 time-stamped "03:23 UT" - 2000 QS7 - see below
MPEC 2009-O43 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2009-O44 time-stamped "11:33 UT" - 2008 OX2 - see below
MPEC 2009-O45 time-stamped "15:02 UT" - 2009 OW6

MPEC 2009-O45 - "15:02 UT" - 2009 OW6

K09O06W 2009 OW6 (risk-listed) was discovered at 0839 UT on 27 July by the Catalina Sky Survey (CSS), which observed it at July 27.36-40p8, 27.45-48p8, and 28.39p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (July 28.44-45p4) and Sabino Canyon Obs. (July 28.45p2).

MPEC 2009-O44 - "11:33 UT" - 2008 OX2

K08O02X 2008 OX2 from Astronomical Research Obs. (ARO) (July 27.19-23p3 & 28.17-20p3)

<< DOU on 28 July '09 >> MPEC 2009-O43 - "06:07 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K09O00F 2009 OF (arc=10 days, H=21.5 ~170m) from ARO (July 27.10-11p4), Powell Obs. (July 27.16-17p4), Petit Jean Mtn. South Obs. (PJMSO) (July 27.23p7), and Chabot Obs. (July 27.25-26p3)
K09N00A 2009 NA (Q=4.141 AU, arc=26 days, H=17.5 ~1.07 km) from ARO (July 27.30-31p4)
K09M08N 2009 MN8 (small asteroid, arc=29 days, H=22.7 ~98m) from ARO (July 27.24-25p3)
Observations of other objects
K09O05X 2009 OX5 (i=41.6°, arc=1 day, H=19.6 ~407m) from Modra Obs. (July 27.85-86p4), Bootes Obs. (July 27.87-88p5), Mandi Obs. (July 27.87-89p4), and CAST Obs. (July 27.88p2)
K09O04Z 2009 OZ4 (i=38.7°, Q=4.714 AU, arc=2 days, H=19.1 ~513m) from Powell Obs. (July 27.25-26p6) and PJMSO (July 27.37-38p9)
K09O00C 2009 OC (arc=2 opp, H=20.4 ~282m) from PJMSO (July 27.32-33p6)
K09N00L 2009 NL (Q=4.759 AU, arc=14 days, H=19.9 ~355m) from Powell Obs. (July 27.22-23p4), ARO (July 27.29p4), and PJMSO (July 27.39p6)
K09N00J 2009 NJ (arc=15 days, H=18.6 ~645m) from ARO (July 27.12-13p4) and PJMSO (July 27.21-22p7)
K09N00H 2009 NH (arc=16 days, H=18.8 ~589m) from ARO (July 27.23-24p4) and PJMSO (July 27.38-39p6)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.8 ~2.34 km) from PJMSO (July 27.26-27p6)
K09M09E 2009 ME9 (arc=33 days, H=21.3 ~186m) from ARO (July 27.13-17p3) and the Spacewatch 1.8m telescope (July 27.31p1)
K09M06Z 2009 MZ6 (arc=32 days, H=20.5 ~269m) from ARO (July 27.20-22p5) and PJMSO (July 27.34p6)
K09M06X 2009 MX6 (arc=33 days, H=19.2 ~490m) from ARO (July 27.17-19p5)
K09M01L 2009 ML1 (arc=34 days, H=19.6 ~407m) from ARO (July 27.32-34p5)
K09M00S 2009 MS (i=52.5°, arc=38 days, H=16.0 ~2.14 km, q=0.864 AU) from Spacewatch 1.8m (July 27.25-26p3)
K09L00X 2009 LX (Q=4.543 AU, arc=46 days, H=19.6 ~407m) from CSS (July 27.43-44p2)
K09L00S 2009 LS (i=45.0°, arc=45 days, H=18.0 ~851m) from ARO (July 27.14-16p4)
K09K22J 2009 KJ22 (arc=57 days, H=20.0 ~339m) from ARO (July 27.27-28p4)
K09K08K 2009 KK8 (arc=60 days, H=19.0 ~537m) from ARO (July 27.37-39p3)
K09K07M 2009 KM7 (arc=3 opp, H=17.9 ~891m) from ARO (July 27.36p3)
K09K07C 2009 KC7 (Q=4.055 AU, arc=61 days, H=19.4 ~446m) from PJMSO (July 27.34-37p6)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from PJMSO (July 27.23-24p6) and Chabot Obs. (July 27.27-28p3)
K07L00L 2007 LL (arc=3 opp, H=20.4 ~282m) from PJMSO (July 27.30-31p5)
K05P02J 2005 PJ2 (arc=3 opp, H=19.5 ~426m) from Spacewatch 1.8m (July 27.43-44p3)
K05M00C 2005 MC (Q=4.169 AU, arc=3 opp, H=16.4 ~1.78 km) from PJMSO (July 27.40p5)
K04R84D 2004 RD84 (arc=2 opp, H=19.1 ~513m) from Spacewatch 1.8m (July 27.40-43p3)
K04R11A 2004 RA11 (i=39.4°, arc=3 opp, H=18.8 ~589m) from Spacewatch 1.8m (July 27.45-46p3)
K04Q24U 2004 QU24 (Q=5.370 AU, arc=4 opp, H=16.0 ~2.14 km, q=1.279 AU) from ARO (July 24.19-22p3 at V=22.1-3)
K02N01P 2002 NP1 (arc=3 opp, H=17.6 ~1.02 km) from La Sagra Obs. (July 27.04-07p3), CSS (July 27.37-39p3), PJMSO (July 27.39-40p5), and Atlante Obs. (July 28.03-04p3)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from PJMSO (July 27.24-25p6) and Balzaretto Obs. (July 27.89p5)
K02J09E 2002 JE9 (arc=2 opp, H=21.2 ~195m) from Spacewatch 1.8m (July 27.47-48p3 at V=21.8-22.4)
K01A50A 2001 AA50 (i=43.9°, arc=4 opp, H=18.5 ~676m) from Atlante Obs. (July 28.06-08p3)
J99V11M 1999 VM11 (arc=4 opp, H=20.7 ~245m) from ARO (July 27.25p1 at V=22.3 & 27.30-31p2 at V=21.8-22.2)
J93R00A 1993 RA (arc=3 opp, H=19.2 ~490m) from ARO (July 24.30-32p3 at V=21.9-22.6) and Spacewatch 1.8m (July 27.35-36p3)
G2723 162723 2000 VM2 from ARO (July 27.37-38p3 at V=21.9-22.2)
G2483 162483 2000 PJ5 from Castelmartini Obs. (July 27.81-82p2) and Atlante Obs. (July 27.90-92p3)
G1989 161989 Cacus (1978 CA) from CSS (July 27.46-47p3)
F2770 152770 1999 RR28 from ARO (July 24.24-27p3 at V=22.0-22.2)
65733 65733 1993 PC from CSS (July 27.33-35p4)
52387 52387 1993 OM7 from CSS (July 27.29-31p3)
26663 26663 2000 XK47 from ARO (July 27.33-35p3 at V=21.9-22.2)
15745 15745 1991 PM5 from Castelmartini Obs. (July 27.86-87p4)
14402 14402 1991 DB from Castelmartini Obs. (July 27.88-89p4)
05626 5626 1991 FE from CSS (July 27.29-32p4)
03103 3103 Eger (1982 BB) from CSS (July 27.19-20p4)
02201 2201 Oljato (1947 XC) from CSS (July 27.36-39p4)

MPEC 2009-O42 - "03:23 UT" - 2000 QS7

K00Q07S 2000 QS7 (risk-listed) from David Tholen's team on Mauna Kea (July 24.62p3 & 26.62p1)

MPEC 2009-O41 - "03:01 UT" - 2008 FC76

K08F76C 2008 FC76 from Lumezzane Obs. (July 21.01-02p2) and Lowell Obs. Anderson Mesa Station (July 27.30p1 & 27.36p1)

Observers on 28 July '09

Nineteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 21 in MPECs 2009-O43 & 2009-O44 -- 2009 OF, 2009 NL, 2009 NJ, 2009 NH, 2009 NA, 2009 MZ6, 2009 MX6, 2009 MN8, 2009 ML1, 2009 ME9, 2009 LS, 2009 KM7, 2009 KK8, 2009 KJ22, 2008 OX2, 2004 QU24, 1999 VM11, 1993 RA, 26663, 162723, 152770
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2009-O43 -- 2002 NP1, 2001 AA50, 162483
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2009-O43 -- 2002 LV
`J05`	Bootes Obs., 1 in MPEC 2009-O43 -- 2009 OX5
`235`	CAST Obs. in Italy, 1 in MPEC 2009-O43 -- 2009 OX5
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2009-O43 -- 162483, 15745, 14402
`703`	Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2009-O43 & 2009-O45 -- 2009 OW6, 2009 LX, 2002 NP1, 65733, 52387, 161989, 5626, 3103, 2201
`G58`	Chabot Obs. in northern California, 2 in MPEC 2009-O43 -- 2009 OF, 2009 KL2
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-O43 -- 2002 NP1
`688`	Lowell Obs. Anderson Mesa Station in Arizona, 1 in MPEC 2009-O41 -- 2008 FC76
`130`	Lumezzane Obs. in Italy, 1 in MPEC 2009-O41 -- 2008 FC76
`H01`	Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2009-O45 -- 2009 OW6
`B28`	Mandi Obs. in Italy, 1 in MPEC 2009-O43 -- 2009 OX5
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2009-O42 -- 2000 QS7
`118`	Modra Obs. in Slovakia, 1 in MPEC 2009-O43 -- 2009 OX5
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPEC 2009-O43 -- 2009 OZ4, 2009 OF, 2009 OC, 2009 NL, 2009 NJ, 2009 NH, 2009 NE, 2009 MZ6, 2009 KL2, 2009 KC7, 2007 LL, 2005 MC, 2002 NP1, 2002 LV
`649`	Powell Obs. in Kansas, 3 in MPEC 2009-O43 -- 2009 OZ4, 2009 OF, 2009 NL
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-O45 -- 2009 OW6
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2009-O43 -- 2009 MS, 2009 ME9, 2005 PJ2, 2004 RD84, 2004 RA11, 2002 JE9, 1993 RA

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

Impact Risk Monitoring on 28 July '09

**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.
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 OW6	JPL Sentry	1705	2063-2104	11	1.1e-05	-5.38	-5.75	0	JPL: "Analysis based on 26 observations spanning 1.0942 days (2009-Jul-27.36058 to 2009-Jul-28.45479)." Diameter approximately 0.031 km. from mean, weighted H=25.2.

2000 QS7	JPL Sentry	1318	R E M O V E D						JPL: Risk listing removed at 0505 UTC.
2000 QS7	NEODyS	1318	R E M O V E D						-

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 28 July '09

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

1705	Noted that JPL Sentry has posted 2009 OW6 as an impact risk - see above
1600	Grabbed MPEC 2009-O45 - 2009 OW6 - see above
1318	Noted that JPL Sentry has removed 2000 QS7 as an impact risk - see above Noted that NEODyS has removed 2000 QS7 as an impact risk - see above Grabbed MPEC 2009-O43 - Daily Orbit Update - see above Grabbed MPEC 2009-O44 - 2008 OX2 - see above
0439	Grabbed MPEC 2009-O42 - 2000 QS7 - see above
0321	Grabbed MPEC 2009-O41 - 2008 FC76 - see above

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