2009-07-26 Tracking News

Contents on 26 July '09

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- two MPECs
Observers -- 23 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 26 July '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs on 26 July '09

Minor Planet Electronic Circulars

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

MPEC 2009-O35 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2009-O36 time-stamped "21:46 UT" - 2009 OZ4

MPEC 2009-O36 - "21:46 UT" - 2009 OZ4

K09O04Z 2009 OZ4 was discovered at 0823 UT on 25 July by LINEAR, which observed it at July 25.35-39p4. The discovery was confirmed by Tzec Maun Obs. Mayhill (July 26.18p2), Farpoint Obs. (July 26.31-32p5), Ernesto Guido via RAS Obs. Mayhill (July 26.40-42p2), Mt. John Obs. (July 26.57p3), Sormano Obs. (July 26.86-87p3), Naef Obs. (July 26.87-90p5), Farra d'Isonzo Obs. (July 26.87-88p2), and Wildberg Obs. (July 26.87-88p4).

<< DOU on 26 July '09 >> MPEC 2009-O35 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K09O00F 2009 OF (arc=9 days, H=21.4 ~178m) from Stia Obs. (July 24.83-84p3) and Eschenberg Obs. (July 25.86-87p7)
Observations of almost-small asteroids (21.7<H<=22.0)
K06T07U 2006 TU7 (arc=2 opp, H=21.9 ~141m) from El Condor Obs. (July 25.13-14p3)
Observations of other objects
K09O00G 2009 OG (i=48.4°, q=0.382 AU, Q=5.080 AU, arc=8 days, H=16.1 ~2.04 km) from El Condor Obs. (July 25.12p1 & 25.16-19p2) and Tzec Maun Obs. Pingelly (July 25.57-60p3)
K09O00C 2009 OC (arc=2 opp, H=20.4 ~282m) from Skylive Obs. (July 26.04-10p6)
K09N00L 2009 NL (Q=4.758 AU, arc=13 days, H=19.9 ~355m) from Great Shefford Obs. (July 24.98-01p3 & 25.96-98p3)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.8 ~2.34 km) from Stia Obs. (July 24.87-89p3)
K09M09C 2009 MC9 (arc=26 days, H=17.9 ~891m) from El Condor Obs. (July 25.11p1, 25.16-19p2 & 26.04-06p3)
K09M06X 2009 MX6 (arc=31 days, H=19.2 ~490m) from Eschenberg Obs. (July 25.85p7)
K09K22J 2009 KJ22 (arc=56 days, H=19.9 ~355m) from LINEAR (July 25.36-39p3), Naef Obs. (July 25.88-91p3), and Bootes Obs. (July 25.91-95p2)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Stia Obs. (July 24.85-86p3)
K06P01A 2006 PA1 (arc=3 opp, H=19.7 ~389m) from the Spacewatch 1.8m telescope (June 19.44-45p3)
K05YC8X 2005 YX128 (arc=3 opp, H=18.9 ~562m) from LINEAR (July 25.36-40p4)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from Eschenberg Obs. (July 25.83-84p9)
K01O14A 2001 OA14 (arc=4 opp, H=18.4 ~708m) from LINEAR (July 25.36-40p4)
K01F90E 2001 FE90 (arc=2 opp, H=20.7 ~245m) from Tzec Maun Obs. Pingelly (July 25.58-61p3)
K01A50A 2001 AA50 (i=43.9°, arc=4 opp, H=18.5 ~676m) from Great Shefford Obs. (July 24.94-96p3 & 25.93-95p3)
K00QD0K 2000 QK130 (arc=4 opp, H=20.6 ~257m) from Eschenberg Obs. (July 26.06-07p2)
L5167 215167 2000 EL26 from Engelhardt Obs. Zelenchukskaya Station (July 25.92-93p3)
G3902 163902 2003 SW222 from Purple Mtn. Obs. XuYi Station (XuYi Sta.) (July 25.64-68p4)
F4244 154244 2002 KL6 from Kiev Comet Station (July 6.01p4)
52762 52762 1998 MT24 from El Condor Obs. (July 25.00-02p3)
30825 30825 1990 TG1 from LINEAR (July 25.41-44p4)
27346 27346 2000 DN8 from El Condor Obs. (July 25.22-25p2)
24761 24761 Ahau (1993 BW2) from El Condor Obs. (July 25.17-23p3) and Atlante Obs. (July 26.02-03p3)
17274 17274 2000 LC16 from El Condor Obs. (July 25.17-23p3)
09162 9162 Kwiila (1987 OA) from Schiaparelli Obs. (July 23.99p2 & 24.05-07p2) and Atlante Obs. (July 25.99-00p3)
05626 5626 1991 FE from El Condor Obs. (July 25.18-24p3)
05620 5620 Jasonwheeler (1990 OA) from Kiev Comet Station (July 5.93-94p9) and Schiaparelli Obs. (July 23.94-97p3)
03200 3200 Phaethon (1983 TB) from Schiaparelli Obs. (July 24.08-09p2)
02201 2201 Oljato (1947 XC) from Wildberg Obs. (July 25.98-99p5)
01943 1943 Anteros (1973 EC) from Alicante Obs. (July 24.00p3) and Atlante Obs. (July 26.05-06p3)

Observers on 26 July '09

A total of 23 observing facilities appear in today's MPECs.

Code	Observer / observatory
`J10`	Alicante Obs. in Spain, 1 in MPEC 2009-O35 -- 1943
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2009-O35 -- 24761, 9162, 1943
`J05`	Bootes Obs., 1 in MPEC 2009-O35 -- 2009 KJ22
`I21`	El Condor Obs. in Argentina, 8 in MPEC 2009-O35 -- 2009 OG, 2009 MC9, 2006 TU7, 52762, 27346, 24761, 17274, 5626
`114`	Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-O35 -- 215167
`151`	Eschenberg Obs. in Switzerland, 4 in MPEC 2009-O35 -- 2009 OF, 2009 MX6, 2002 LV, 2000 QK130
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2009-O36 -- 2009 OZ4
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-O36 -- 2009 OZ4
`J95`	Great Shefford Obs. in England, 2 in MPEC 2009-O35 -- 2009 NL, 2001 AA50
`585`	Kiev Comet Station in the Ukraine, 2 in MPEC 2009-O35 -- 154244, 5620
`704`	LINEAR in New Mexico, 5 in MPECs 2009-O35 & 2009-O36 -- 2009 OZ4, 2009 KJ22, 2005 YX128, 2001 OA14, 30825
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2009-O36 -- 2009 OZ4
`A13`	Naef Obs. in Switzerland, 2 in MPECs 2009-O35 & 2009-O36 -- 2009 OZ4, 2009 KJ22
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-O35 -- 163902
`H06%`	Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-O36 -- 2009 OZ4
`204`	Schiaparelli Obs. in Italy, 3 in MPEC 2009-O35 -- 9162, 5620, 3200
`B40`	Skylive Obs. in Italy, 1 in MPEC 2009-O35 -- 2009 OC
`587`	Sormano Obs. in Italy, 1 in MPEC 2009-O36 -- 2009 OZ4
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2009-O35 -- 2006 PA1
`A78`	Stia Obs. in Italy, 3 in MPEC 2009-O35 -- 2009 OF, 2009 NE, 2009 KL2
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-O36 -- 2009 OZ4
`D25`	Tzec Maun Obs. Pingelly in Western Australia, 2 in MPEC 2009-O35 -- 2009 OG, 2001 FE90
`198`	Wildberg Obs. in Germany, 2 in MPECs 2009-O35 & 2009-O36 -- 2009 OZ4, 2201

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

Impact Risk Monitoring on 26 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 OF	NEODyS	1534	R E M O V E D						-
2009 OF	JPL Sentry	1534	R E M O V E D						JPL: Risk listing removed at 0850 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 26 July '09

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

2200	Grabbed MPEC 2009-O36 - 2009 OZ4 - see above Noted that the NEOCP has become empty
1534	Noted that JPL Sentry has removed 2009 OF as an impact risk - see above Noted that NEODyS has removed 2009 OF as an impact risk - see above Grabbed MPEC 2009-O35 - Daily Orbit Update - see above
0148	Noted that the NEOCP has become active

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