2008-03-29 Tracking News

Contents on 29 March '08

IAU Minor Planet Center
- NEOCP Activity -- nine listings: 3 new, 6 updated
- New MPECs -- six MPECs
Observers -- fifteen observing facilities
Impact Risk Monitoring -- five 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 29 March '08

The MPC's NEO Confirmation Page has 9 listings: 3 new, 6 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and six updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of fourteen objects listed 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 29 March '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-F49 time-stamped "02:26 UT" - 2008 FE5 - see below
MPEC 2008-F50 time-stamped "02:33 UT" - 2008 FF5 - see below
MPEC 2008-F51 time-stamped "02:57 UT" - 2008 FG5 - see below
MPEC 2008-F52 time-stamped "03:34 UT" - 2008 FH5 - see below
MPEC 2008-F53 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-F54 time-stamped "20:53 UT" - 2006 FK9

MPEC 2008-F54 - "20:53 UT" - 2006 FK9

K06F09K 2006 FK9 (H=20.9 ~224m) from the Mt. Lemmon Survey (MLS) (March 29.18-19p3), Alter Satzberg Obs. (March 29.80p3), and Gnosca Obs. (March 29.81-82p2)

<< DOU on 29 Mar. '08 >> MPEC 2008-F53 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08F05F 2008 FF5 (small asteroid, q=0.081 AU, Q=4.315 AU, arc=1 day, H=23.1 ~81m) from Schiaparelli Obs. (March 29.04-05p3) and the Spacewatch 1.8m telescope (March 29.21-22p3)
K08F00N 2008 FN (i=45.8°, arc=2 days, H=18.3 ~741m) from Great Shefford Obs. (March 29.16-17p2)
K08E09A 2008 EA9 (small asteroid, arc=22 days, H=27.7 ~10m) from Spacewatch 1.8m (March 28.30p3 at V=21.8-22.4)
K08E07R 2008 ER7 (arc=23 days, H=20.0 ~339m) from Spacewatch 1.8m (March 28.17-18p2 & 29.18-19p3)
Observations of recently (no longer) risk-listed objects
K08E00R 2008 ER (arc=26 days, H=21.4 ~178m) from Spacewatch 1.8m (March 28.39-40p3)
Observations of small asteroids (H>22.0)
K08F05E 2008 FE5 (arc=1 day, H=22.2 ~123m) from Schiaparelli Obs. (March 29.03p1 & 29.07p1)
K08F00P 2008 FP (q=0.281 AU, Q=4.934 AU, arc=1 day, H=26.6 ~16m) from Great Shefford Obs. (March 29.09-10p5 & 29.15-16p4) and Schiaparelli Obs. (March 29.15p3)
K08F00O 2008 FO (arc=1 day, H=23.1 ~81m) from LINEAR (March 28.12-17p5)
K08E85E 2008 EE85 (arc=16 days, H=22.8 ~93m) from Greiner Research Obs. (GRO) (March 28.24p3) and Drebach Obs. (March 28.82-83p4)
K08E05W 2008 EW5 (arc=24 days, H=24.1 ~51m) from Spacewatch 1.8m (March 28.38p3)
K08D00X 2008 DX (arc=31 days, H=23.8 ~59m) from Spacewatch 1.8m (March 28.43-44p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K08F05G 2008 FG5 (arc=1 day, H=21.8 ~148m) from Schiaparelli Obs. (March 29.06p2) and Great Shefford Obs. (March 29.10-11p3)
Observations of other objects
K08F00G 2008 FG (i=42.6°, arc=2 days, H=19.5 ~426m) from Spacewatch 1.8m (March 29.14-15p2)
K08E85M 2008 EM85 (arc=14 days, H=19.8 ~371m) from GRO (March 28.28-29p20)
K08E09M 2008 EM9 (q=0.292 AU, arc=19 days, H=17.6 ~1.02 km) from GRO (March 28.25p4)
K08D23H 2008 DH23 (arc=29 days, H=19.7 ~389m) from Spacewatch 1.8m (March 28.22-23p3 & 29.22-23p3)
K08D00W 2008 DW (arc=31 days, H=21.5 ~170m) from Spacewatch 1.8m (March 28.25p3)
K08B22C 2008 BC22 (arc=77 days, H=19.9 ~355m) from GRO (March 28.29-30p6)
K07V04Q 2007 VQ4 (arc=3 opp, H=15.8 ~2.34 km, q=1.271 AU) from LINEAR (March 28.31-35p4)
K07T08G 2007 TG8 (Q=4.306 AU, arc=197 days, H=18.6 ~645m) from LINEAR (March 28.30-33p4)
K07N04S 2007 NS4 (arc=2 opp, H=19.0 ~537m) from MLS (March 28.28-29p4)
K06B55G 2006 BG55 (arc=3 opp, H=18.4 ~708m) from GRO (March 28.26-28p20)
K05YI0P 2005 YP180 (arc=2 opp, H=19.3 ~467m) from Spacewatch 1.8m (March 28.33-34p3)
K05S01R 2005 SR1 (arc=2 opp, H=19.2 ~490m) from the Spacewatch 0.9m telescope (March 28.18-22p3)
K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from GRO (March 29.10p8)
K05M13P 2005 MP13 (arc=2 opp, H=19.8 ~371m) from Spacewatch 1.8m (March 28.42-43p3 at V=21.9-22.2)
K05B02E 2005 BE2 (arc=2 opp, H=18.2 ~776m) from LINEAR (March 28.19-22p4) and GRO (March 29.13-14p7)
K04RA9Y 2004 RY109 (arc=3 opp, H=19.0 ~537m) from Spacewatch 0.9m (March 28.13-16p3)
K04C02R 2004 CR2 (arc=2 opp, H=19.4 ~446m) from LINEAR (March 28.32-35p4)
K03H42U 2003 HU42 (arc=4 opp, H=18.0 ~851m) from Spacewatch 1.8m (March 28.50-51p3 at V=22.3)
K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.7 ~1.55 km) from GRO (March 28.21-22p19)
K00DA7P 2000 DP107 (arc=4 opp, H=18.2 ~776m) from Drebach Obs. (March 28.81-82p4)
I0186 180186 2003 QZ30 from MLS (March 28.32-34p4 & 28.44-45p4)
G2039 162039 1996 JG from Spacewatch 0.9m (March 28.30-33p3)
E3678 143678 2003 SA224 from Drebach Obs. (March 28.79-80p4)
D8127 138127 2000 EE14 from Drebach Obs. (March 28.79p4)
86324 86324 1999 WA2 from LINEAR (March 28.12-17p4)
54686 54686 2001 DU8 from LINEAR (March 28.19-24p5)
53319 53319 1999 JM8 from Goodricke-Pigott Obs. (March 27.44-47p3)
22099 22099 2000 EX106 from Inastars Obs. (March 28.81-82p4)
18736 18736 1998 NU from LINEAR (March 28.12-17p5)
13553 13553 1992 JE from MLS (March 28.25-27p4)
06037 6037 1988 EG from LINEAR (March 28.25-27p3)
05604 5604 1992 FE from LINEAR (March 28.13-17p5)
03554 3554 Amun (1986 EB) from Drebach Obs. (March 28.78-79p4)

MPEC 2008-F52 - "03:34 UT" - 2008 FH5

K08F05H 2008 FH5 (small asteroid, Earth MOID=1.5 LD, H=27.0 ~13m) was discovered at 0734 UT on 28 March by MLS, which observed it at March 28.32-35p8 and 28.44-45p4. The discovery was confirmed by Great Shefford Obs. (March 29.05-06p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 7.7 LD on 2 April.

MPEC 2008-F51 - "02:57 UT" - 2008 FG5

K08F05G 2008 FG5 (borderline-small, Earth MOID=3.6 LD, H=21.7 ~155m) was discovered at 0835 UT on 28 March by MLS, which observed it at March 28.36-43p8. The discovery was confirmed by Sabino Canyon Obs. (March 28.41p3), Tiki Obs. (March 28.56-60p3), and Suno Obs. (March 29.04p3).

MPEC 2008-F50 - "02:33 UT" - 2008 FF5

K08F05F 2008 FF5 (risk-listed, q=0.066 AU, Q=6.392 AU, Earth MOID=3.0 LD, H=22.9 ~89m) was discovered at 0743 UT on 28 March by MLS, which observed it at March 28.32-35p7 and 28.44-45p4. The discovery was confirmed by Sabino Canyon Obs. (March 28.38p3), Suno Obs. (March 28.00p2), and Great Shefford Obs. (March 29.00-01p3).

MPEC 2008-F49 - "02:26 UT" - 2008 FE5

K08F05E 2008 FE5 (small asteroid, H=22.2 ~123m) was discovered at 0638 UT on 28 March by MLS, which observed it at March 28.28-33p8. The discovery was confirmed by Great Shefford Obs. (March 28.89-93p3 & 28.97p1).

Observers on 29 March '08

Fifteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2008-F54 -- 2006 FK9
`113`	Drebach Obs. in Germany, 5 in MPEC 2008-F53 -- 2008 EE85, 2000 DP107, 143678, 138127, 3554
`143`	Gnosca Obs. in Switzerland, 1 in MPEC 2008-F54 -- 2006 FK9
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-F53 -- 53319
`J95`	Great Shefford Obs. in England, 6 in MPECs 2008-F49, 2008-F50, 2008-F52 & 2008-F53 -- 2008 FP, 2008 FN, 2008 FH5, 2008 FG5, 2008 FF5, 2008 FE5
`H51`	Greiner Research Obs. (GRO) in Wisconsin, 8 in MPEC 2008-F53 -- 2008 EM9, 2008 EM85, 2008 EE85, 2008 BC22, 2006 BG55, 2005 NB7, 2005 BE2, 2003 GW
`B15`	Inastars Obs. in Germany, 1 in MPEC 2008-F53 -- 22099
`704`	LINEAR in New Mexico, 10 in MPEC 2008-F53 -- 2008 FO, 2007 VQ4, 2007 TG8, 2005 BE2, 2004 CR2, 86324, 54686, 18736, 6037, 5604
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2008-F49, 2008-F50, 2008-F51, 2008-F52, 2008-F53 & 2008-F54 -- 2008 FH5, 2008 FG5, 2008 FF5, 2008 FE5, 2007 NS4, 2006 FK9, 180186, 13553
`854`	Sabino Canyon Obs. in Arizona, 2 in MPECs 2008-F50 & 2008-F51 -- 2008 FG5, 2008 FF5
`204`	Schiaparelli Obs. in Italy, 4 in MPEC 2008-F53 -- 2008 FP, 2008 FG5, 2008 FF5, 2008 FE5
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2008-F53 -- 2005 SR1, 2004 RY109, 162039
`291`	Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2008-F53 -- 2008 FG, 2008 FF5, 2008 EW5, 2008 ER7, 2008 ER, 2008 EA9, 2008 DX, 2008 DW, 2008 DH23, 2005 YP180, 2005 MP13, 2003 HU42
`147`	Suno Obs. in Italy, 2 in MPECs 2008-F50 & 2008-F51 -- 2008 FG5, 2008 FF5
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-F51 -- 2008 FG5

Impact Risk Monitoring on 29 March '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 FF5	NEODyS	1453	2029-2087	7	3.65e-07	-4.80	-5.18	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/03/29.220."
2008 FF5	JPL Sentry	0510	2017-2102	16	8.7e-08	-5.29	-5.70	0	JPL: "Analysis based on 19 observations spanning .68517 days (2008-Mar-28.32219 to 2008-Mar-29.00736)." Diameter approximately 0.085 km. from mean, weighted H=23.0.

2008 FN	NEODyS	1453	2010-2086	34	9.14e-09	-3.94	-4.74	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/03/27.460 to 2008/03/29.173."

2008 FK	NEODyS	1453	2036	1	1.05e-06	-6.76	-6.76	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/03/27.253 to 2008/03/28.280."

2008 EA9	NEODyS	1453	2061-2089	26	4.3e-05	-6.06	-6.64	0	NEODyS: "Based on 46 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/28.305."

2008 ER7	NEODyS	1453	2077-2084	2	6.84e-07	-3.75	-3.95	0	NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/29.186."

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 29 March '08

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

2101	Grabbed MPEC 2008-F54 - 2006 FK9 - see above
1453	Noted that NEODyS has updated its 2008 EA9 risk assessment - see above Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
1452	Noted that NEODyS has posted 2008 FF5 as an impact risk - see above Noted that NEODyS has posted 2008 FK as an impact risk - see above Noted that NEODyS has posted 2008 FN as an impact risk - see above Grabbed MPEC 2008-F53 - Daily Orbit Update - see above
0510	Noted that JPL Sentry has posted 2008 FF5 as an impact risk - see above Grabbed MPEC 2008-F49 - 2008 FE5 - see above Grabbed MPEC 2008-F50 - 2008 FF5 - see above Grabbed MPEC 2008-F51 - 2008 FG5 - see above Grabbed MPEC 2008-F52 - 2008 FH5 - see above

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