2009-07-22 Tracking News

Contents on 22 July '09

IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 new
- New MPECs -- three MPECs
Observers -- eighteen 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 22 July '09

The MPC's NEO Confirmation Page has 2 listings: 2 new

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new listings. Both of these were "one nighters." So far The Tracking News has counted a total of three 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 22 July '09

Minor Planet Electronic Circulars

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

MPEC 2009-O23 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2009-O24 time-stamped "19:18 UT" - 2004 VA15 - see below
MPEC 2009-O25 time-stamped "23:07 UT" - Comets C/2009 A8, 2009 A9, 2009 A10, 2009 O1 (STEREO)

MPEC 2009-O25 - "23:07 UT" - Comets C/2009 A8, 2009 A9, 2009 A10, 2009 O1 (STEREO)

CK09O010 C/2009 O1 from the COR2-B instrument (5) aboard STEREO-B (July 18.60-64p6 & 18.70-97p26) and the COR2-A instrument (5) aboard STEREO-A (July 18.87-02p16, 19.06-08p4, 19.12-27p16 & 19.31-33p4)
CK09A100 C/2009 A10 from the HI1-A instrument (4) aboard STEREO-A (Jan. 10.79-99p16)
CK09A090 C/2009 A9 from STEREO-A/HI1-A (4) (Jan. 10.60-71p10, 10.77-88p10 & 10.93p2)
CK09A080 C/2009 A8 from STEREO-A/HI1-A (4) (Jan. 4.54p2, 4.60p2 & 4.66-77p10)

MPEC 2009-O24 - "19:18 UT" - 2004 VA15

K04V15A 2004 VA15 from the Siding Spring Survey (SSS) (July 19.73p1 & 22.75p2)

<< DOU on 22 July '09 >> MPEC 2009-O23 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K09O00F 2009 OF (arc=5 days, H=21.3 ~186m) from Schiaparelli Obs. (July 19.91-92p3 & 19.96-97p2), Madonna di Dossobuono Obs. (July 20.85-86p3), Astronomical Research Obs. (ARO) (July 21.11-14p4), Alter Satzberg Obs. (July 21.85-87p3), and Eschenberg Obs. (July 21.88-90p5)
Observations of other objects
K09O00G 2009 OG (i=48.4°, q=0.382 AU, Q=5.068 AU, arc=4 days, H=16.1 ~2.04 km) from El Condor Obs. (July 22.10-11p3)
K09O00C 2009 OC (arc=2 opp, H=20.3 ~295m) from Schiaparelli Obs. (July 19.00-01p3 & 20.05p2), Peschiera del Garda Obs. (July 20.97-99p3), and Naef Obs. (July 21.90-92p2)
K09N00L 2009 NL (Q=4.738 AU, arc=9 days, H=20.0 ~339m) from Great Shefford Obs. (July 19.94p1, 20.00p1 & 20.10p1) and Naef Obs. (July 21.93p3)
K09N00J 2009 NJ (arc=10 days, H=18.5 ~676m) from Eschenberg Obs. (July 21.85-86p7)
K09N00H 2009 NH (arc=10 days, H=18.8 ~589m) from La Sagra Obs. (July 20.95-98p3)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.8 ~2.34 km) from Peschiera del Garda Obs. (July 20.90-93p3)
K09M09C 2009 MC9 (arc=22 days, H=17.9 ~891m) from El Condor Obs. (July 22.12-13p3)
K09M06X 2009 MX6 (arc=26 days, H=19.2 ~490m) from Madonna di Dossobuono Obs. (July 20.87p3)
K09M01L 2009 ML1 (arc=29 days, H=19.4 ~446m) from Naef Obs. (July 21.95-98p2)
K09H82B 2009 HB82 (Q=4.414 AU, arc=89 days, H=17.7 ~977m) from Naef Obs. (July 21.97-00p2)
K09F28N 2009 FN28 (Q=4.004 AU, arc=118 days, H=19.3 ~467m) from ARO (July 20.20p3)
K07L00L 2007 LL (arc=3 opp, H=20.4 ~282m) from Zonalunar Obs. (July 21.01p1)
K05S25N 2005 SN25 (arc=4 opp, H=19.7 ~389m) from Schiaparelli Obs. (July 20.01-02p2 & 20.07p2)
K05G00G 2005 GG (arc=4 opp, H=16.0 ~2.14 km, q=0.695 AU) from ARO (July 20.12-15p3)
K05A03D 2005 AD3 (arc=3 opp, H=17.2 ~1.23 km) from SSS (July 20.60-63p5)
K04B85E 2004 BE85 (Q=4.089 AU, arc=2 opp, H=17.9 ~891m) from ARO (July 20.22-25p3 at V=22.0-22.2)
K02V92C 2002 VC92 (arc=4 opp, H=18.8 ~589m) from ARO (July 20.27-30p6 at V=20.4-22.1)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from San Benedetto Po Obs. (July 20.84-85p4), Eschenberg Obs. (July 21.84p7), and Peschiera del Garda Obs. (July 21.86-88p4)
K01O14A 2001 OA14 (arc=4 opp, H=18.4 ~708m) from Naef Obs. (July 21.96-98p2)
K01A50A 2001 AA50 (i=43.9°, arc=4 opp, H=18.5 ~676m) from Schiaparelli Obs. (July 20.04p5) and Great Shefford Obs. (July 20.04-07p3)
K00O22B 2000 OB22 (Q=4.252 AU, arc=4 opp, H=17.1 ~1.29 km) from Madonna di Dossobuono Obs. (July 20.88p3) and Bigmuskie Obs. (July 21.84-86p3)
J90H00A 1990 HA (Q=4.356 AU, arc=6 opp, H=16.3 ~1.86 km) from ARO (July 20.33-34p2 at V=22.4-6)
G2483 162483 2000 PJ5 from Schiaparelli Obs. (July 19.98p3 & 20.03p2) and San Benedetto Po Obs. (July 20.85-86p4)
E3651 143651 2003 QO104 from El Condor Obs. (July 22.14-15p3)
24761 24761 Ahau (1993 BW2) from El Condor Obs. (July 22.16-17p3)
17274 17274 2000 LC16 from El Condor Obs. (July 22.15-16p3)
16960 16960 1998 QS52 from Wildberg Obs. (July 21.88-90p5)
05626 5626 1991 FE from El Condor Obs. (July 22.18-19p2)
03200 3200 Phaethon (1983 TB) from Stixendorf Obs. (July 17.03-04p3)

Observers on 22 July '09

Eighteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2009-O23 -- 2009 OF
`H55`	Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2009-O23 -- 2009 OF, 2009 FN28, 2005 GG, 2004 BE85, 2002 VC92, 1990 HA
`B88`	Bigmuskie Obs. in Italy, 1 in MPEC 2009-O23 -- 2000 OB22
`I21`	El Condor Obs. in Argentina, 6 in MPEC 2009-O23 -- 2009 OG, 2009 MC9, 24761, 17274, 143651, 5626
`151`	Eschenberg Obs. in Switzerland, 3 in MPEC 2009-O23 -- 2009 OF, 2009 NJ, 2002 LV
`J95`	Great Shefford Obs. in England, 2 in MPEC 2009-O23 -- 2009 NL, 2001 AA50
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-O23 -- 2009 NH
`560`	Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2009-O23 -- 2009 OF, 2009 MX6, 2000 OB22
`A13`	Naef Obs. in Switzerland, 5 in MPEC 2009-O23 -- 2009 OC, 2009 NL, 2009 ML1, 2009 HB82, 2001 OA14
`A53`	Peschiera del Garda Obs. in Italy, 3 in MPEC 2009-O23 -- 2009 OC, 2009 NE, 2002 LV
`C494`	HI1-A instrument (4) aboard STEREO-A in heliocentric orbit leading Earth, 3 in MPEC 2009-O25 -- C/2009 A9, C/2009 A8, C/2009 A10
`C495`	COR2-A instrument (5) aboard STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2009-O25 -- C/2009 O1
`C505`	COR2-B instrument (5) aboard STEREO-B in heliocentric orbit trailing Earth, 1 in MPEC 2009-O25 -- C/2009 O1
`434`	San Benedetto Po Obs. in Italy, 2 in MPEC 2009-O23 -- 2002 LV, 162483
`204`	Schiaparelli Obs. in Italy, 5 in MPEC 2009-O23 -- 2009 OF, 2009 OC, 2005 SN25, 2001 AA50, 162483
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2009-O23 & 2009-O24 -- 2005 AD3, 2004 VA15
`A71`	Stixendorf Obs. in Austria, 1 in MPEC 2009-O23 -- 3200
`198`	Wildberg Obs. in Germany, 1 in MPEC 2009-O23 -- 16960
`J08`	Zonalunar Obs. in Spain, 1 in MPEC 2009-O23 -- 2007 LL

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

Impact Risk Monitoring on 22 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	JPL Sentry	1400	2039	1	2.0e-06	-3.68	-3.68	0	JPL: "Analysis based on 67 observations spanning 4.6830 days (2009-Jul-17.21281 to 2009-Jul-21.89584)." Diameter approximately 0.190 km. from mean, weighted H=21.3.
2009 OF	NEODyS	1400	2039	1	2.43e-06	-3.59	-3.59	0	NEODyS: "Based on 67 optical observations (of which 1 are rejected as outliers) from 2009/07/17.214 to 2009/07/21.897."

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 22 July '09

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

2323	Grabbed MPEC 2009-O25 - Comets C/2009 A8, 2009 A9, 2009 A10, 2009 O1 (STEREO) - see above
2000	Grabbed MPEC 2009-O24 - 2004 VA15 - see above
1400	Noted that JPL Sentry has updated its 2009 OF risk assessment - see above Noted that NEODyS has updated its 2009 OF risk assessment - see above Grabbed MPEC 2009-O23 - Daily Orbit Update - see above

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