2008-04-06 Tracking News

Contents on 6 April '08

IAU Minor Planet Center
- NEOCP Activity -- 19 listings: 7 new, 12 updated
- New MPECs -- one MPEC
Observers -- sixteen observing facilities
Impact Risk Monitoring -- four 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 6 April '08

The MPC's NEO Confirmation Page has 19 listings: 7 new, 12 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven new and twelve updated listings. Of these, thirteen were "one nighters." So far The Tracking News has counted a total of 20 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 6 April '08

Minor Planet Electronic Circulars

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

<< DOU on 6 Apr. '08 >> MPEC 2008-G30 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08G00K 2008 GK (small asteroid, arc=2 days, H=23.4 ~71m) from McDonald Obs. (April 5.29-30p4)
K08G00J 2008 GJ (arc=4 days, H=20.5 ~269m) from the Spacewatch 1.8m telescope (April 5.25-26p3)
K08G00H 2008 GH (small asteroid, Q=4.348 AU, arc=4 days, H=23.8 ~59m) from Spacewatch 1.8m (April 5.23-24p3)
K08F07K 2008 FK7 (small asteroid, arc=5 days, H=23.1 ~81m) from Spacewatch 1.8m (April 5.45-46p3)
K08F06T 2008 FT6 (arc=7 days, H=17.6 ~1.02 km) from Spacewatch 1.8m (April 5.44-45p3)
K08F05F 2008 FF5 (small asteroid, q=0.077 AU, Q=4.630 AU, arc=8 days, H=23.0 ~85m) from Spacewatch 1.8m (April 5.27-28p3)
K08F00N 2008 FN (i=44.9°, arc=9 days, H=18.4 ~708m) from Crni Vrh Obs. (April 5.12-15p4) and McDonald Obs. (April 5.45-46p3)
K08D00B 2008 DB (small asteroid, arc=24 days, H=25.7 ~25m) from David Tholen's team on Mauna Kea (March 13.51-52p2 at R=22.6-7)
Observations of recently (no longer) risk-listed objects
K08E69D 2008 ED69 (i=36.3°, Q=5.047 AU, arc=25 days, H=16.8 ~1.48 km) from Desert Moon Obs. (April 5.40-42p3)
K08E68V 2008 EV68 (small asteroid, arc=25 days, H=23.5 ~68m) from Astronomical Research Obs. (ARO) (April 5.13-15p3 at V=22.1-2)
K08E06N 2008 EN6 (arc=31 days, H=19.2 ~490m) from ARO (April 5.09-11p3 at V=22.0-22.2)
Observations of small asteroids (H>22.0)
K08G01F 2008 GF1 (arc=1 day, H=28.3 ~7m) from Great Shefford Obs. (April 5.97p2 & 6.05-06p2)
K08G01D 2008 GD1 (arc=2 days, H=22.5 ~107m) from ARO (April 5.22-24p3)
K08F06S 2008 FS6 (arc=7 days, H=22.5 ~107m) from Desert Moon Obs. (April 5.28-30p3) and Spacewatch 1.8m (April 5.47p3)
K08F00O 2008 FO (arc=9 days, H=23.2 ~78m) from LINEAR (April 5.25-29p5)
K08E07Q 2008 EQ7 (arc=30 days, H=22.6 ~102m) from Desert Moon Obs. (April 5.33-38p4)
K08E05W 2008 EW5 (arc=32 days, H=24.1 ~51m) from Spacewatch 1.8m (April 5.41-42p3)
K08B00E 2008 BE (arc=79 days, H=22.9 ~89m) from ARO (April 5.16-19p3 at V=22.2-4)
Observations of other objects
K08G01E 2008 GE1 (arc=1 day, H=19.4 ~446m) from ARO (April 5.34-37p3) and McDonald Obs. (April 5.35-38p3)
K08G00X 2008 GX (arc=3 days, H=19.1 ~513m) from ARO (April 5.06-07p3) and Jim Young via Table Mtn. Obs. (April 6.20-21p4)
K08G00D 2008 GD (q=0.264 AU, arc=5 days, H=19.8 ~371m) from Young/Table Mtn. (April 6.18-19p4)
K08F06U 2008 FU6 (arc=7 days, H=17.9 ~891m) from McDonald Obs. (April 5.43-44p3) and Hamamatsu-Yuto Obs. (April 5.74-80p8)
K08F05G 2008 FG5 from the Catalina Sky Survey (CSS) (April 5.41-43p4)
K08E85M 2008 EM85 (arc=22 days, H=19.7 ~389m) from Crni Vrh Obs. (April 4.00-03p4)
K08E32B 2008 EB32 (arc=26 days, H=19.2 ~490m) from McDonald Obs. (April 5.12-14p3) and Desert Moon Obs. (April 5.14-18p3)
K08E09M 2008 EM9 (q=0.291 AU, arc=27 days, H=17.5 ~1.07 km) from Desert Moon Obs. (April 5.20-21p3) and CSS (April 5.28-30p4 & 5.34-37p4)
K08D05G 2008 DG5 (arc=2 opp, H=19.6 ~407m) from McDonald Obs. (April 5.16-17p2)
K08D00W 2008 DW (arc=39 days, H=21.5 ~170m) from McDonald Obs. (April 5.25-28p3)
K08D00E 2008 DE (arc=54 days, H=19.4 ~446m) from CAST Obs. (April 5.87p1)
K08CB8Z 2008 CZ118 (arc=53 days, H=18.4 ~708m) from Crni Vrh Obs. (April 4.99-02p4)
K08C70J 2008 CJ70 (arc=62 days, H=21.4 ~178m) from ARO (April 5.15-18p3 at V=22.0-22.1)
K08B18T 2008 BT18 (arc=65 days, H=18.3 ~741m) from McDonald Obs. (April 5.11-12p3)
K07V07Y 2007 VY7 (arc=3 opp, H=19.5 ~426m) from CSS (April 5.47-49p4)
K07R19X 2007 RX19 (i=40.4°, arc=205 days, H=18.4 ~708m) from LINEAR (April 5.20-23p4) and CAST Obs. (April 5.86p1)
K07R09U 2007 RU9 (arc=2 opp, H=20.7 ~245m) from Spacewatch 1.8m (April 5.48-49p3)
K07P08A 2007 PA8 (Q=4.701 AU, arc=4 opp, H=16.0 ~2.14 km, q=0.958 AU) from the Mt. Lemmon Survey (MLS) (April 5.12-13p4)
K07N04S 2007 NS4 (arc=2 opp, H=19.1 ~513m) from MLS (April 5.27-30p4)
K07H00R 2007 HR (q=0.276 AU, arc=2 opp, H=20.7 ~245m) from Desert Moon Obs. (April 5.23-26p3) and McDonald Obs. (April 5.31p3)
K06SD1U 2006 SU131 (arc=2 opp, H=18.6 ~645m) from McDonald Obs. (April 5.18-21p3)
K05J21F 2005 JF21 (arc=4 opp, H=17.0 ~1.35 km) from McDonald Obs. (April 5.32-34p3) and the FTP education program via Faulkes Telescope North (April 5.45-46p3)
K05G09L 2005 GL9 (q=0.222 AU, Q=4.060 AU, arc=4 opp, H=17.2 ~1.23 km) from Desert Moon Obs. (April 5.10-12p3)
K04F31E 2004 FE31 (arc=4 opp, H=18.2 ~776m) from CSS (April 4.35-36p4)
K04C02R 2004 CR2 (arc=2 opp, H=19.4 ~446m) from the Spacewatch 0.9m telescope (April 5.14-17p3)
K03H42U 2003 HU42 (arc=4 opp, H=17.9 ~891m) from Spacewatch 0.9m (April 5.34-37p3)
K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.7 ~1.55 km) from CSS (April 5.11-13p3)
K02R25U 2002 RU25 (arc=3 opp, H=17.4 ~1.12 km) from MLS (April 5.27-30p4)
K02F05W 2002 FW5 (i=46.4°, arc=3 opp, H=19.4 ~446m) from CSS (April 5.34-37p4)
J99T10A 1999 TA10 (arc=3 opp, H=18.0 ~851m) from CSS (April 5.16-18p4)
J98H03K 1998 HK3 (arc=5 opp, H=18.0 ~851m) from LINEAR (April 5.41-46p5)
H8601 178601 2000 CG59 from MLS (April 5.27-29p4)
G2422 162422 2000 EV70 from MLS (April 5.33-35p4) and CSS (April 5.35-37p3)
D6874 136874 1998 FH74 from CSS (April 4.35-37p4)
86667 86667 2000 FO10 from LINEAR (April 5.36-41p5)
35107 35107 1991 VH from CSS (April 4.47-48p4)
09400 9400 1994 TW1 from CSS (April 5.28-37p8)
05836 5836 1993 MF from CSS (April 4.32-34p4)
01866 1866 Sisyphus (1972 XA) from LINEAR (April 5.31-33p3) and Sant Cugat del Valles Obs. (April 5.93-99p3)

Observers on 6 April '08

Sixteen observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 7 in MPEC 2008-G30 -- 2008 GX, 2008 GE1, 2008 GD1, 2008 EV68, 2008 EN6, 2008 CJ70, 2008 BE
`235`	CAST Obs. in Italy, 2 in MPEC 2008-G30 -- 2008 DE, 2007 RX19
`703`	Catalina Sky Survey (CSS) in Arizona, 12 in MPEC 2008-G30 -- 2008 FG5, 2008 EM9, 2007 VY7, 2004 FE31, 2003 GW, 2002 FW5, 1999 TA10, 35107, 162422, 136874, 9400, 5836
`106`	Crni Vrh Obs. in Slovenia, 3 in MPEC 2008-G30 -- 2008 FN, 2008 EM85, 2008 CZ118
`448`	Desert Moon Obs. in New Mexico, 7 in MPEC 2008-G30 -- 2008 FS6, 2008 EQ7, 2008 EM9, 2008 ED69, 2008 EB32, 2007 HR, 2005 GL9
`F653`	FTP education program via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-G30 -- 2005 JF21
`J95`	Great Shefford Obs. in England, 1 in MPEC 2008-G30 -- 2008 GF1
`379`	Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2008-G30 -- 2008 FU6
`704`	LINEAR in New Mexico, 5 in MPEC 2008-G30 -- 2008 FO, 2007 RX19, 1998 HK3, 86667, 1866
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-G30 -- 2008 DB
`711`	McDonald Obs. in Texas, 11 in MPEC 2008-G30 -- 2008 GK, 2008 GE1, 2008 FU6, 2008 FN, 2008 EB32, 2008 DW, 2008 DG5, 2008 BT18, 2007 HR, 2006 SU131, 2005 JF21
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2008-G30 -- 2007 PA8, 2007 NS4, 2002 RU25, 178601, 162422
`B61`	Sant Cugat del Valles Obs. in Spain, 1 in MPEC 2008-G30 -- 1866
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-G30 -- 2004 CR2, 2003 HU42
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2008-G30 -- 2008 GJ, 2008 GH, 2008 FT6, 2008 FS6, 2008 FK7, 2008 FF5, 2008 EW5, 2007 RU9
`6735`	Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2008-G30 -- 2008 GX, 2008 GD

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

Impact Risk Monitoring on 6 April '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 GJ	NEODyS	1458	R E M O V E D

2008 GH	NEODyS	1459	2074-2085	2	6.33e-10	-8.43	-8.51	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/04/01.298 to 2008/04/05.243."

2008 FF5	NEODyS	1459	2060-2070	2	2.32e-07	-5.10	-5.12	0	NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/04/05.282."

2008 DB	NEODyS	1459	2046-2090	23	4.19e-05	-4.79	-4.86	0	NEODyS: "Based on 64 optical observations (of which 2 are rejected as outliers) from 2008/02/18.243 to 2008/03/13.517."

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 6 April '08

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

1459	Noted that NEODyS has updated its 2008 DB risk assessment - see above Noted that NEODyS has updated its 2008 FF5 risk assessment - see above Noted that NEODyS has updated its 2008 GH risk assessment - see above Grabbed MPEC 2008-G30 - Daily Orbit Update - see above
1458	Noted that NEODyS has removed 2008 GJ as an impact risk - see above

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