2009-07-19 Tracking News

Contents on 19 July '09

IAU Minor Planet Center
- NEOCP Activity -- three listings: 2 new, 1 updated
- New MPECs -- two MPECs
Observers -- fourteen 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 19 July '09

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and one updated listings. Of these, two were "one nighters."

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 19 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-O15 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2009-O16 time-stamped "15:22 UT" - 2009 OC = 2006 TE1

MPEC 2009-O16 - "15:22 UT" - 2009 OC = 2006 TE1

K09O00C 2009 OC from Skylive Obs. (July 19.05-08p3)

<< DOU on 19 July '09 >> MPEC 2009-O15 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09O00F 2009 OF (arc=2 days, H=21.2 ~195m) from Sandlot Obs. (July 19.13p2) and Magdalena Ridge Obs. (MRO) (July 19.20-21p3)
Observations of recently (no longer) risk-listed objects
K09M09B 2009 MB9 (Q=4.955 AU, arc=18 days, H=18.7 ~616m) from the Siding Spring Survey (SSS) (July 17.40p2)
Observations of small asteroids (H>22.0)
K09M08M 2009 MM8 (arc=24 days, H=24.6 ~41m) from SSS (July 17.79p2)
K08N03P 2008 NP3 (arc=2 opp, H=23.3 ~74m) from SSS (July 17.40-41p3)
Observations of other objects
K09O00G 2009 OG (i=49.4°, q=0.382 AU, Q=5.639 AU, arc=1 day, H=16.0 ~2.14 km) from SSS (July 18.83p2)
K09O00C 2009 OC (arc=2 days, H=20.4 ~282m) from Tiki Obs. (July 17.44-46p4), Petit Jean Mtn. South Obs. (PJMSO) (July 18.33-37p8), Peschiera del Garda Obs. (July 18.99-01p3), and Posadas Obs. (July 19.04p3)
K09N00L 2009 NL (Q=4.743 AU, arc=6 days, H=20.0 ~339m) from PJMSO (July 18.40p9), Peschiera del Garda Obs. (July 18.96-97p4), and Masquefa Obs. (July 19.03-04p3)
K09N00H 2009 NH (arc=7 days, H=18.8 ~589m) from PJMSO (July 18.37-39p7)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.8 ~2.34 km) from Fiamene Obs. (July 16.86p3), PJMSO (July 18.24-25p6), and Masquefa Obs. (July 18.92-96p3)
K09M09C 2009 MC9 (arc=17 days, H=17.9 ~891m) from SSS (July 17.47p1 & 17.51-53p4)
K09M06X 2009 MX6 (arc=23 days, H=19.1 ~513m) from SSS (July 17.41-42p3)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Peschiera del Garda Obs. (July 8.90-93p3) and PJMSO (July 18.21-23p6)
K07L00L 2007 LL (arc=3 opp, H=20.4 ~282m) from PJMSO (July 18.32-33p5)
K05S25N 2005 SN25 (arc=4 opp, H=19.7 ~389m) from Fiamene Obs. (July 16.99p1)
K02L00V 2002 LV (arc=3 opp, H=16.6 ~1.62 km) from PJMSO (July 18.24p5), Peschiera del Garda Obs. (July 18.89-90p3), and San Vito Obs. (July 18.92-93p3)
K01F90E 2001 FE90 (arc=2 opp, H=20.7 ~245m) from SSS (July 17.71-74p4)
J99C08W 1999 CW8 (arc=3 opp, H=18.6 ~645m) from SSS (July 17.79p1)
J4386 194386 2001 VG5 from Bigmuskie Obs. (July 18.88-94p3)
G2483 162483 2000 PJ5 from An Carraig Obs. (July 17.97-98p2)
68216 68216 2001 CV26 from SSS (July 18.71-73p4)
03554 3554 Amun (1986 EB) from SSS (July 17.38p1)
00433 433 Eros (1898 DQ) from Atlante Obs. (July 19.07p3)

Observers on 19 July '09

Fourteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`J16`	An Carraig Obs. in Northern Ireland, 1 in MPEC 2009-O15 -- 162483
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2009-O15 -- 433
`B88`	Bigmuskie Obs. in Italy, 1 in MPEC 2009-O15 -- 194386
`B23`	Fiamene Obs. in Italy, 2 in MPEC 2009-O15 -- 2009 NE, 2005 SN25
`H01`	Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2009-O15 -- 2009 OF
`232`	Masquefa Obs. in Spain, 2 in MPEC 2009-O15 -- 2009 NL, 2009 NE
`A53`	Peschiera del Garda Obs. in Italy, 4 in MPEC 2009-O15 -- 2009 OC, 2009 NL, 2009 KL2, 2002 LV
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2009-O15 -- 2009 OC, 2009 NL, 2009 NH, 2009 NE, 2009 KL2, 2007 LL, 2002 LV
`J53`	Posadas Obs. in Spain, 1 in MPEC 2009-O15 -- 2009 OC
`233`	San Vito Obs. in Italy, 1 in MPEC 2009-O15 -- 2002 LV
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-O15 -- 2009 OF
`E12`	Siding Spring Survey (SSS) in New South Wales, 10 in MPEC 2009-O15 -- 2009 OG, 2009 MX6, 2009 MM8, 2009 MC9, 2009 MB9, 2008 NP3, 2001 FE90, 1999 CW8, 68216, 3554
`B40`	Skylive Obs. in Italy, 1 in MPEC 2009-O16 -- 2009 OC
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2009-O15 -- 2009 OC

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

Impact Risk Monitoring on 19 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	1446	2039	2	2.5e-06	-3.53	-3.82	0	JPL: "Analysis based on 22 observations spanning 2.0005 days (2009-Jul-17.21281 to 2009-Jul-19.21328)." Diameter approximately 0.200 km. from mean, weighted H=21.2.
2009 OF	NEODyS	1446	2039	2	3.59e-06	-3.39	-3.52	0	NEODyS: "Based on 22 optical observations (of which 1 are rejected as outliers) from 2009/07/17.214 to 2009/07/19.214."

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 19 July '09

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

1710	Grabbed MPEC 2009-O16 - 2009 OC = 2006 TE1 - see above
1446	Noted that JPL Sentry has updated its 2009 OF risk assessment - see above Noted that NEODyS has posted 2009 OF as an impact risk - see above Grabbed MPEC 2009-O15 - Daily Orbit Update - see above

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