2009-03-22 Tracking News

Contents on 22 March '09

IAU Minor Planet Center
- NEOCP Activity -- ten listings: 2 new, 8 updated
- New MPECs -- three MPECs
Observers -- 28 observing facilities
Impact Risk Monitoring -- six 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 22 March '09

The MPC's NEO Confirmation Page has 10 listings: 2 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and eight updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of twelve 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 by Birtwhistle et al. at Suno Observatory.

New MPECs on 22 March '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-F59 time-stamped "06:11 UT" - Daily Orbit Update - see below
MPEC 2009-F60 time-stamped "17:04 UT" - Comet C/2009 F5 (McNaught) - see below
MPEC 2009-F61 time-stamped "21:24 UT" - 2007 LA15

MPEC 2009-F61 - "21:24 UT" - 2007 LA15

K07L15A 2007 LA15 (H=19.6 ~407m) from Astronomical Research Obs. (ARO) (Feb. 23.32-37p3 at V=22.6-8 & March 22.25-28p3 at V=21.9-22.1)

MPEC 2009-F60 - "17:04 UT" - Comet C/2009 F5 (McNaught)

CK09F050 C/2009 F5 (McNaught) (i=85.8°, q=2.291 AU, TP=2008 Nov. 8.164 TT) from the Siding Spring Survey (SSS) (March 20.66-68p4 & 21.55p2), Sabino Canyon Obs. (March 21.43-44p3), Mt. John Obs. (March 21.48-49p3 & 22.41-42p3), El Leoncito Obs. (March 22.23-26p5), RAS Obs. Mayhill (March 22.37-41p2), Table Mtn. Obs. (March 22.38-39p4), and Grove Creek Obs. (March 22.63-66p3)

<< DOU on 22 Mar. '09 >> MPEC 2009-F59 - "06:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K09F10Z 2009 FZ10 (small asteroid, arc=1 day, H=25.4 ~28m) from Raheny Obs. (March 21.92-93p2)
K09F04S 2009 FS4 (small asteroid, arc=3 days, H=25.2 ~31m) from the Mt. Lemmon Survey (MLS) (March 21.28-30p3) and Calar Alto Obs. (March 21.81-82p3)
K09F01G 2009 FG1 (i=69.6°, arc=5 days, H=18.5 ~676m) from Naef Obs. (March 21.88-93p5)
K09F00P 2009 FP (small asteroid, arc=4 days, H=23.0 ~85m) from the Spacewatch 1.8m telescope (March 21.26p3)
K09F00G 2009 FG (small asteroid, arc=5 days, H=25.5 ~27m) from Spacewatch 1.8m (March 21.36-37p3)
Observations of recently (no longer) risk-listed objects
K09E01K 2009 EK1 (arc=19 days, H=21.4 ~178m) from Spacewatch 1.8m (March 21.31-32p3 at V=21.6-22.1)
K09DB1O 2009 DO111 (small asteroid, arc=26 days, H=23.0 ~85m) from Bornheim Obs. (March 18.87-88p8)
K09D47E 2009 DE47 (arc=21 days, H=18.6 ~645m) from ARO (March 20.44-45p4) and the Catalina Sky Survey (CSS) (March 21.46-47p4)
K09D46L 2009 DL46 (arc=20 days, H=21.5 ~170m) from ARO (March 20.45-46p3)
K09D10S 2009 DS10 (arc=28 days, H=21.0 ~214m) from Spacewatch 1.8m (March 21.17p2)
Observations of small asteroids (H>22.0)
K09F04X 2009 FX4 (arc=2 days, H=25.4 ~28m) from Hibiscus Obs. (March 20.59-60p2)
K09F00D 2009 FD (arc=26 days, H=22.1 ~129m) from the Spacewatch 0.9m telescope (March 21.26-29p3), Calar Alto Obs. (March 21.91-92p3), and Skylive Obs. (March 21.98p3)
Observations of other objects
K09F00F 2009 FF (arc=5 days, H=21.6 ~162m) from Spacewatch 1.8m (March 21.27-29p3)
K09F00A 2009 FA (i=42.5°, Q=4.117 AU, arc=6 days, H=18.6 ~645m) from CSS (March 21.22-24p4), Starkenburg Obs. (March 21.81p3), Eschenberg Obs. (March 21.81-82p7), Raheny Obs. (March 21.88p1 & 21.94p1), and Bigmuskie Obs. (March 21.92-94p3)
K09E03G 2009 EG3 (arc=6 days, H=21.2 ~195m) from Spacewatch 1.8m (March 21.11-12p3)
K09E02O 2009 EO2 (arc=16 days, H=19.5 ~426m) from SSS (March 21.40p2)
K09D01L 2009 DL1 (arc=31 days, H=18.9 ~562m) from Bigmuskie Obs. (March 22.01-03p3)
K09C02Z 2009 CZ2 (Q=4.075 AU, arc=45 days, H=19.0 ~537m) from MLS (March 21.17-19p4)
K09B58C 2009 BC58 (arc=2 opp, H=18.8 ~589m) from Spacewatch 1.8m (March 21.33-35p3 at V=22.3-7)
K08Y29E 2008 YE29 (Q=4.545 AU, arc=81 days, H=20.5 ~269m) from CSS (March 21.30-31p4)
K08W60L 2008 WL60 (arc=119 days, H=18.0 ~851m) from Bigmuskie Obs. (March 22.05-08p3)
K08SF0W 2008 SW150 (arc=173 days, H=19.7 ~389m) from CSS (March 21.41-43p4)
K07B02T 2007 BT2 (arc=3 opp, H=17.2 ~1.23 km) from Herrenberg Obs. (March 21.86-87p6) and El Guijo Obs. (March 21.00-01p3)
K06S19V 2006 SV19 (arc=4 opp, H=17.6 ~1.02 km) from CSS (March 21.38-40p4)
K06F35V 2006 FV35 (arc=6 opp, H=21.6 ~162m) from MLS (March 21.45-47p3)
K05S19G 2005 SG19 (Q=4.171 AU, arc=2 opp, H=16.7 ~1.55 km) from Spacewatch 0.9m (March 21.32-35p3)
K05E30M 2005 EM30 (i=53.1°, arc=3 opp, H=18.9 ~562m) from CSS (March 21.36-37p4) and Herrenberg Obs. (March 21.81p5)
K05E00F 2005 EF (arc=2 opp, H=20.7 ~245m) from Bigmuskie Obs. (March 21.97-99p3)
K04E09U 2004 EU9 (arc=3 opp, H=18.9 ~562m) from CSS (March 21.30-32p4)
K01D08R 2001 DR8 (arc=2 opp, H=18.9 ~562m) from MLS (March 21.22-24p4)
K8565 208565 2002 CT11 from Raheny Obs. (March 21.89p1 & 21.95p1) and Bigmuskie Obs. (March 22.06-09p3)
K6910 206910 2004 NL8 from CSS (March 21.32-34p3)
J8856 198856 2005 LR3 from Jaen Obs. (March 20.00p2)
I9008 189008 1996 FR3 from Spacewatch 0.9m (March 21.44-48p3)
G2900 162900 2001 HG31 from Guadarrama Obs. (March 20.84p3)
F5336 155336 2006 GA1 from CSS (March 21.33-35p4) and Naef Obs. (March 21.82-84p2)
F3953 153953 2002 AD9 from Herrenberg Obs. (March 21.83-85p4)
E3651 143651 2003 QO104 from CSS (March 21.24-26p4), Raheny Obs. (March 21.89p1 & 21.95p1), and El Guijo Obs. (March 21.92-93p3)
E1495 141495 2002 EZ11 from CSS (March 21.27-29p4) and Naef Obs. (March 21.83-85p2)
E1432 141432 2002 CQ11 from Spacewatch 0.9m (March 21.26-29p3)
D7925 137925 2000 BJ19 from San Benedetto Po Obs. (March 20.83p2)
A1873 101873 1999 NC5 from CSS (March 21.15-16p3)
99935 99935 2002 AV4 from La Sagra Obs. (March 20.95-98p3), CSS (March 21.33-35p4), and Naef Obs. (March 21.83-85p2)
86666 86666 2000 FL10 from CSS (March 21.44-46p4)
68350 68350 2001 MK3 from Guadarrama Obs. (March 20.86-87p3) and Raheny Obs. (March 21.90p1 & 21.96p1)
35396 35396 1997 XF11 from La Sagra Obs. (March 21.05-08p3)
18109 18109 2000 NG11 from MLS (March 21.22-24p4)
08566 8566 1996 EN from Raheny Obs. (March 21.94p1)
07753 7753 1988 XB from CSS (March 21.27-35p8)
07088 7088 Ishtar (1992 AA) from CSS (March 21.41-42p4)
04954 4954 Eric (1990 SQ) from SSS (March 20.66-69p4)
04179 4179 Toutatis (1989 AC) from San Benedetto Po Obs. (March 20.80-81p4)
03554 3554 Amun (1986 EB) from Guadarrama Obs. (March 20.85p2)
01036 1036 Ganymed (1924 TD) from Mt. Tuffley Obs. (March 22.02-04p3)

Observers on 22 March '09

A total of 28 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 3 in MPECs 2009-F59 & 2009-F61 -- 2009 DL46, 2009 DE47, 2007 LA15
`B88`	Bigmuskie Obs. in Italy, 5 in MPEC 2009-F59 -- 2009 FA, 2009 DL1, 2008 WL60, 2005 EF, 208565
`127`	Bornheim Obs. in Germany, 1 in MPEC 2009-F59 -- 2009 DO111
`493`	Calar Alto Obs. in Spain, 2 in MPEC 2009-F59 -- 2009 FS4, 2009 FD
`703`	Catalina Sky Survey (CSS) in Arizona, 16 in MPEC 2009-F59 -- 2009 FA, 2009 DE47, 2008 YE29, 2008 SW150, 2006 SV19, 2005 EM30, 2004 EU9, 99935, 86666, 206910, 155336, 143651, 141495, 101873, 7753, 7088
`J27`	El Guijo Obs. in Spain, 2 in MPEC 2009-F59 -- 2007 BT2, 143651
`808`	El Leoncito Obs. in Argentina, 1 in MPEC 2009-F60 -- C/2009 F5
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2009-F59 -- 2009 FA
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-F60 -- C/2009 F5
`458`	Guadarrama Obs. in Spain, 3 in MPEC 2009-F59 -- 68350, 162900, 3554
`240`	Herrenberg Obs. in Germany, 3 in MPEC 2009-F59 -- 2007 BT2, 2005 EM30, 153953
`F84`	Hibiscus Obs. in Tahiti, 1 in MPEC 2009-F59 -- 2009 FX4
`J28`	Jaen Obs. in Spain, 1 in MPEC 2009-F59 -- 198856
`J75`	La Sagra Obs. in Spain, 2 in MPEC 2009-F59 -- 99935, 35396
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2009-F60 -- C/2009 F5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2009-F59 -- 2009 FS4, 2009 CZ2, 2006 FV35, 2001 DR8, 18109
`J93`	Mt. Tuffley Obs. in England, 1 in MPEC 2009-F59 -- 1036
`A13`	Naef Obs. in Switzerland, 4 in MPEC 2009-F59 -- 2009 FG1, 99935, 155336, 141495
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-F60 -- C/2009 F5
`J41`	Raheny Obs. in Ireland, 6 in MPEC 2009-F59 -- 2009 FZ10, 2009 FA, 68350, 208565, 143651, 8566
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-F60 -- C/2009 F5
`434`	San Benedetto Po Obs. in Italy, 2 in MPEC 2009-F59 -- 137925, 4179
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2009-F59 & 2009-F60 -- C/2009 F5, 2009 EO2, 4954
`B40`	Skylive Obs. in Italy, 1 in MPEC 2009-F59 -- 2009 FD
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2009-F59 -- 2009 FD, 2005 SG19, 189008, 141432
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2009-F59 -- 2009 FP, 2009 FG, 2009 FF, 2009 EK1, 2009 EG3, 2009 DS10, 2009 BC58
`611`	Starkenburg Obs. in Germany, 1 in MPEC 2009-F59 -- 2009 FA
`673`	Table Mtn. Obs. in southern California, 1 in MPEC 2009-F60 -- C/2009 F5

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

Impact Risk Monitoring on 22 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 FZ10	JPL Sentry	1520	2082-2108	7	4.0e-08	-7.85	-8.08	0	JPL: "Analysis based on 27 observations spanning .60792 days (2009-Mar-21.32461 to 2009-Mar-21.93253)." Diameter approximately 0.027 km. from mean, weighted H=25.5.

2009 FY10	NEODyS	1520	2012-2088	39	2.61e-09	-5.15	-5.46	0	NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2009/03/21.224 to 2009/03/21.830."

2009 FS4	NEODyS	1520	2079	1	7.18e-10	-9.35	-9.35	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2009/03/18.949 to 2009/03/21.818."
2009 FS4	JPL Sentry	1520	R E M O V E D						JPL: Risk listing removed at 0851 UTC.

2009 FG1	JPL Sentry	1520	2038-2061	3	2.9e-08	-3.51	-3.57	0	JPL: "Analysis based on 36 observations spanning 4.6235 days (2009-Mar-17.30415 to 2009-Mar-21.92763)." Diameter approximately 0.760 km. from mean, weighted H=18.2.
2009 FG1	NEODyS	1520	2038-2081	6	3.3e-08	-3.45	-3.52	0	NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2009/03/17.305 to 2009/03/21.928."

2009 FP	JPL Sentry	1520	R E M O V E D						JPL: Risk listing removed at 0852 UTC.

2009 FG	JPL Sentry	1520	2022-2107	30	7.5e-06	-5.55	-6.25	0	JPL: "Analysis based on 48 observations spanning 4.9675 days (2009-Mar-16.3986 to 2009-Mar-21.36612)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
2009 FG	NEODyS	1520	2022-2090	23	5.42e-06	-5.65	-6.27	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/03/16.399 to 2009/03/21.367."

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 March '09

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

2140	Grabbed MPEC 2009-F61 - 2007 LA15 - see above
1721	Grabbed MPEC 2009-F60 - Comet C/2009 F5 (McNaught) - see above
1520	Noted that JPL Sentry has updated its 2009 FG risk assessment - see above Noted that NEODyS has updated its 2009 FG risk assessment - see above Noted that JPL Sentry has updated its 2009 FG1 risk assessment - see above Noted that NEODyS has updated its 2009 FG1 risk assessment - see above Noted that JPL Sentry has removed 2009 FP as an impact risk - see above Noted that JPL Sentry has removed 2009 FS4 as an impact risk - see above Noted that NEODyS has posted 2009 FS4 as an impact risk - see above Noted that NEODyS has posted 2009 FY10 as an impact risk - see above Noted that JPL Sentry has updated its 2009 FZ10 risk assessment - see above Grabbed MPEC 2009-F59 - Daily Orbit Update - see above

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