2009-03-08 Tracking News

Contents on 8 March '09

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- two MPECs
Observers -- nine 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 8 March '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 8 March '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-E48 time-stamped "07:08 UT" - Daily Orbit Update - see below
MPEC 2009-E49 time-stamped "20:52 UT" - 2009 EQ2

MPEC 2009-E49 - "20:52 UT" - 2009 EQ2

K09E02Q 2009 EQ2 (H=20.6 ~257m) was discovered at 0948 UT on 7 March by the Mt. Lemmon Survey (MLS), which observed it at March 7.41-50p9 and 8.40p2. The discovery was confirmed by Farra d'Isonzo Obs. (March 7.99-04p3) and Remanzacco Obs. (March 8.08p2).

<< DOU on 8 Mar. '09 >> MPEC 2009-E48 - "07:08 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K09D43V 2009 DV43 (small asteroid, arc=9 days, H=23.7 ~62m) from Farra d'Isonzo Obs. (March 7.86p2)
K09D03R 2009 DR3 (arc=21 days, H=21.5 ~170m) from Cyclops Obs. (March 6.81-82p4)
Observations of other objects
K08E00E 2008 EE (arc=2 opp, H=19.7 ~389m) from New Millennium Obs. (Feb. 27.92p2)
K07B02T 2007 BT2 (arc=3 opp, H=17.2 ~1.23 km) from El Guijo Obs. (March 8.08-09p3)
K06W02Z 2006 WZ2 (arc=3 opp, H=16.9 ~1.41 km) from New Millennium Obs. (Feb. 27.94-98p6)
K04E09U 2004 EU9 (arc=3 opp, H=18.9 ~562m) from Bigmuskie Obs. (March 7.89-91p3)
K02C11T 2002 CT11 (i=53.9°, arc=5 opp, H=17.0 ~1.35 km) from El Guijo Obs. (March 8.05-06p3)
K6359 206359 2003 QM47 from New Millennium Obs. (Feb. 27.93-97p6)
K3217 203217 2001 FX9 from New Millennium Obs. (Feb. 27.92-97p6)
G4400 164400 2005 GN59 from Bigmuskie Obs. (March 7.95-98p3)
G1989 161989 Cacus (1978 CA) from Farra d'Isonzo Obs. (March 8.02-03p3) and El Guijo Obs. (March 8.13-14p3)
F5334 155334 2006 DZ169 from MLS (March 7.41-43p4)
E3651 143651 2003 QO104 from El Guijo Obs. (March 7.00-02p3)
D7925 137925 2000 BJ19 from New Millennium Obs. (Feb. 27.94p2)
68350 68350 2001 MK3 from Cyclops Obs. (March 6.84-87p5) and El Guijo Obs. (March 7.94-96p3)
36284 36284 2000 DM8 from New Millennium Obs. (Feb. 27.90-95p6)
18882 18882 1999 YN4 from the Siding Spring Survey (SSS) (March 7.52-53p4)
04179 4179 Toutatis (1989 AC) from New Millennium Obs. (Feb. 27.91-96p6)
03554 3554 Amun (1986 EB) from New Millennium Obs. (Feb. 27.91-95p6)
03103 3103 Eger (1982 BB) from Mirasteilas Obs. (March 7.98-00p3)
01863 1863 Antinous (1948 EA) from New Millennium Obs. (Feb. 27.91-96p6)
01036 1036 Ganymed (1924 TD) from SSS (March 7.54-55p2)

Observers on 8 March '09

Nine observing facilities appear in today's MPECs.

Code	Observer / observatory
`B88`	Bigmuskie Obs., 2 in MPEC 2009-E48 -- 2004 EU9, 164400
`B84`	Cyclops Obs. in The Netherlands, 2 in MPEC 2009-E48 -- 2009 DR3, 68350
`J27`	El Guijo Obs. in Spain, 5 in MPEC 2009-E48 -- 2007 BT2, 2002 CT11, 68350, 161989, 143651
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPECs 2009-E48 & 2009-E49 -- 2009 EQ2, 2009 DV43, 161989
`B67`	Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-E48 -- 3103
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2009-E48 & 2009-E49 -- 2009 EQ2, 155334
`A24`	New Millennium Obs. in Italy, 9 in MPEC 2009-E48 -- 2008 EE, 2006 WZ2, 36284, 206359, 203217, 137925, 4179, 3554, 1863
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2009-E49 -- 2009 EQ2
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-E48 -- 18882, 1036

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

Impact Risk Monitoring on 8 March '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 EN2	NEODyS	1537	2022-2089	31	6.34e-09	-4.07	-4.53	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/03/03.523 to 2009/03/07.522."

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 8 March '09

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

2201	Grabbed MPEC 2009-E49 - 2009 EQ2 - see above Noted that the NEOCP has become empty
1537	Noted that NEODyS has posted 2009 EN2 as an impact risk - see above Grabbed MPEC 2009-E48 - Daily Orbit Update - see above

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