2008-09-29 Tracking News

Contents on 29 September '08

IAU Minor Planet Center
- NEOCP Activity -- ten listings: 2 new, 8 updated
- New MPECs -- nine MPECs
Observers -- 33 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 29 September '08

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 NEO discovery Confirmation Page (NEOCP) had two new and eight updated listings. All of these were "one nighters." So far The Tracking News has counted a total of 21 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 September '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been nine MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-S84 time-stamped "03:57 UT" - 2007 TD66 - see below
MPEC 2008-S85 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-S86 time-stamped "16:40 UT" - 2008 SB85 - see below
MPEC 2008-S87 time-stamped "16:44 UT" - 2008 SC85 - see below
MPEC 2008-S88 time-stamped "16:46 UT" - 2008 SD85 - see below
MPEC 2008-S89 time-stamped "16:49 UT" - 2008 SE85 - see below
MPEC 2008-S90 time-stamped "22:33 UT" - 2008 SG148 - see below
MPEC 2008-S91 time-stamped "22:44 UT" - 2008 SH148 - see below
MPEC 2008-S92 time-stamped "22:48 UT" - 2008 SJ148

MPEC 2008-S92 - "22:48 UT" - 2008 SJ148

K08SE8J 2008 SJ148 (small asteroid, Earth MOID=7.4 LD, H=24.1 ~51m) was discovered at 0957 UT on 29 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 29.42-47p8 and 29.51p4.

MPEC 2008-S91 - "22:44 UT" - 2008 SH148

K08SE8H 2008 SH148 (small asteroid, Q=4.562 AU, Earth MOID=3.6 LD, H=26.1 ~20m) was discovered at 0432 UT on 29 Sept. by MLS, which observed it at Sept. 29.19-24p8. The discovery was confirmed by Dave Balam via Plaskett 1.8m Telescope (Sept. 29.29p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 5.6 LD on 4 Oct.

MPEC 2008-S90 - "22:33 UT" - 2008 SG148

K08SE8G 2008 SG148 (small asteroid, H=22.4 ~112m) was discovered at 0849 UT on 29 Sept. by MLS, which observed it at Sept. 29.37-38p4, 29.44p4, and 29.52p4. The discovery was confirmed by Jim Young via Table Mtn. Obs. (Sept. 29.45-47p4), Balam/Plaskett (Sept. 29.46p3), and Farra d'Isonzo Obs. (Sept. 29.86-88p4).

MPEC 2008-S89 - "16:49 UT" - 2008 SE85

K08S85E 2008 SE85 (risk-listed, H=19.7 ~389m) was discovered at 1044 UT on 28 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 28.45-51p7. The discovery was confirmed by Cristovao Jacques via RAS Obs. Moorook (Sept. 28.59-61p3), Sabino Canyon Obs. (Sept. 29.31-32p3), and MLS (Sept. 29.39-41p4).

MPEC 2008-S88 - "16:46 UT" - 2008 SD85

K08S85D 2008 SD85 (small asteroid, H=23.1 ~81m) was discovered at 0640 UT on 28 Sept. by MLS, which observed it at Sept. 28.28-30p4, 28.34-36p4, and 29.22-24p4. The discovery was confirmed by Great Shefford Obs. (Sept. 28.84-85p3), Bergen-Enkheim Obs. (Sept. 28.84-87p6), and Balam/Plaskett (Sept. 29.31p3).

MPEC 2008-S87 - "16:44 UT" - 2008 SC85

K08S85C 2008 SC85 (H=19.3 ~467m) was discovered at 0506 UT on 27 Sept. by MLS, which observed it at Sept. 27.21-24p4, 28.15-33p17, and 29.17-18p4. The discovery was confirmed by Mt. John Obs. (Sept. 27.51-52p2), Drebach Obs. (Sept. 27.80-81p2), Great Shefford Obs. (Sept. 27.87-88p2), Kinver Obs. (Sept. 27.92-96p4), Astronomical Research Obs. (ARO) (Sept. 28.10-11p3), Junk Bond Obs. (Sept. 28.21-28p4), Sandlot Obs. (Sept. 28.22-24p3 & 29.19-22p4), Remanzacco Obs. (Sept. 28.95p2), the Spacewatch 1.8m telescope (Sept. 29.22-25p6), and Jim Bedient via Faulkes Telescope North (Sept. 29.30-31p3).

MPEC 2008-S86 - "16:40 UT" - 2008 SB85

K08S85B 2008 SB85 (i=74.8°, q=2.119 AU, Q=4.894 AU, H=17.7 ~977m) was discovered at 0723 UT on 26 Sept. by the Spacewatch 0.9m telescope, which observed it at Sept. 26.31-34p3. The discovery was confirmed by Spacewatch 1.8m (Sept. 26.39-40p3, 28.38p2 & 29.36-37p3), Great Shefford Obs. (Sept. 26.00-04p3 & 28.13-14p2), ARO (Sept. 27.23p1 & 28.23-25p4), MLS (Sept. 27.44-46p4 & 29.36-38p4), Mt. John Obs. (Sept. 27.58-59p3), Sandlot Obs. (Sept. 28.29-30p3), and Balam/Plaskett (Sept. 29.40-41p3).

<< DOU on 29 Sept. '08 >> MPEC 2008-S85 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08S11V 2008 SV11 (Q=4.377 AU, arc=3 days, H=18.2 ~776m) from ARO (Sept. 28.08-10p3)
K08S07T 2008 ST7 (small asteroid, arc=4 days, H=24.0 ~54m) from ARO (Sept. 28.20-22p4)
Observations of recently (no longer) risk-listed objects
K08S01U 2008 SU1 (arc=6 days, H=19.0 ~537m) from Alter Satzberg Obs. (Sept. 28.86-87p3)
K08R01H 2008 RH1 (small asteroid, arc=25 days, H=22.6 ~102m) from Naef Obs. (Sept. 28.89-92p2)
K08Q11S 2008 QS11 (arc=32 days, H=19.9 ~355m) from CSS (Sept. 28.50-51p4)
K08Q00Y 2008 QY (arc=2 opp, H=18.7 ~616m) from ARO (Sept. 28.41-42p3)
Observations of small asteroids (H>22.0)
K05C00N 2005 CN (arc=5 opp, H=22.9 ~89m) from Spacewatch 1.8m (Sept. 28.49-50p3)
Observations of other objects
K08S11W 2008 SW11 (arc=3 days, H=21.1 ~204m) from Spacewatch 1.8m (Sept. 28.37-38p3)
K08S07R 2008 SR7 (arc=5 days, H=19.9 ~355m) from Herrenberg Obs. (Sept. 28.80-83p6)
K08S01R 2008 SR1 (arc=4 days, H=20.3 ~295m) from Linceo Obs. (Sept. 27.94-96p3)
K08S00Q 2008 SQ (arc=8 days, H=19.4 ~446m) from Hormersdorf Obs. (Sept. 27.99-01p5) and Capannoli Obs. (Sept. 28.95-96p2)
K08S00E 2008 SE (arc=7 days, H=19.0 ~537m) from Capannoli Obs. (Sept. 28.94p1)
K08R00T 2008 RT (arc=27 days, H=19.7 ~389m) from ARO (Sept. 28.40-41p5)
K08P03L 2008 PL3 (arc=55 days, H=19.4 ~446m) from Mirasteilas Obs. (Sept. 28.88-89p3)
K08M00Z 2008 MZ (Q=4.207 AU, arc=105 days, H=18.4 ~708m) from ARO (Sept. 28.42-43p5)
K07R05F 2007 RF5 (arc=2 opp, H=18.4 ~708m) from the Siding Spring Survey (SSS) (Sept. 28.39-41p3)
K06U00K 2006 UK (arc=3 opp, H=20.1 ~323m) from Spacewatch 1.8m (Sept. 28.42-43p3)
K04E20N 2004 EN20 (i=40.1°, arc=3 opp, H=18.4 ~708m) from CSS (Sept. 28.48-50p4)
K02T70B 2002 TB70 (arc=2 opp, H=21.6 ~162m) from CSS (Sept. 28.35-37p4)
K02S00P 2002 SP (q=0.361 AU, arc=3 opp, H=20.7 ~245m) from CSS (Sept. 28.31-33p3)
K02R25Q 2002 RQ25 (arc=3 opp, H=20.4 ~282m) from ARO (Sept. 28.41-43p2 at V=22.2)
K01SQ9W 2001 SW269 (arc=4 opp, H=19.5 ~426m) from CSS (Sept. 28.25-27p4)
K01S09K 2001 SK9 (q=0.378 AU, arc=4 opp, H=18.0 ~851m) from Herrenberg Obs. (Sept. 28.84-85p6)
K01R17V 2001 RV17 (arc=3 opp, H=20.2 ~309m) from SSS (Sept. 28.66-70p4)
K00K43W 2000 KW43 (arc=3 opp, H=20.0 ~339m) from Spacewatch 1.8m (Sept. 28.44-45p3)
K00A93X 2000 AX93 (arc=4 opp, H=17.5 ~1.07 km) from ARO (Sept. 28.18p1 at V=22.7)
J98Q02E 1998 QE2 (arc=5 opp, H=16.5 ~1.70 km) from Spacewatch 1.8m (Sept. 28.47-48p3)
J97U02S 1997 US2 (arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (Sept. 28.43-44p3)
I9700 189700 2001 TA45 from CSS (Sept. 28.19-24p9)
G8044 168044 2005 SG from Mirasteilas Obs. (Sept. 28.95-97p3)
G2900 162900 2001 HG31 from Mirasteilas Obs. (Sept. 28.99-01p3)
G2039 162039 1996 JG from MLS (Sept. 28.49-50p4)
F5140 155140 2005 UD from MLS (Sept. 28.42-44p4)
E1851 141851 2002 PM6 from Herrenberg Obs. (Sept. 28.78-79p5)
D6923 136923 1998 JH2 from Mirasteilas Obs. (Sept. 29.02-04p3)
96744 96744 1999 OW3 from Goodricke-Pigott Obs. (Sept. 28.35-36p2)
90075 90075 2002 VU94 from MLS (Sept. 28.42-44p4)
39572 39572 1993 DQ1 from Balzaretto Obs. (Sept. 28.91-92p4)
08567 8567 1996 HW1 from Montelupo Obs. (Sept. 27.99-00p4)
04257 4257 Ubasti (1987 QA) from Vicksburg Obs. (Sept. 28.13-14p2)
04179 4179 Toutatis (1989 AC) from Mataro Obs. (Sept. 27.81-84p3)
03753 3753 Cruithne (1986 TO) from North Ryde Obs. (Sept. 27.67-68p2)
01620 1620 Geographos (1951 RA) from Mataro Obs. (Sept. 27.97-98p3)

MPEC 2008-S84 - "03:57 UT" - 2007 TD66

K07T66D 2007 TD66 (borderline-small, H=21.8 ~148m) from ARO (Sept. 27.38-41p3 at V=22.1-6 & 28.34-38p3 at V=22.1-5)

Observers on 29 September '08

A total of 33 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2008-S85 -- 2008 SU1
`H55`	Astronomical Research Obs. (ARO) in Illinois, 10 in MPECs 2008-S84, 2008-S85, 2008-S86 & 2008-S87 -- 2008 SV11, 2008 ST7, 2008 SC85, 2008 SB85, 2008 RT, 2008 QY, 2008 MZ, 2007 TD66, 2002 RQ25, 2000 AX93
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2008-S85 -- 39572
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-S88 -- 2008 SD85
`B09`	Capannoli Obs. in Italy, 2 in MPEC 2008-S85 -- 2008 SQ, 2008 SE
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2008-S85 & 2008-S89 -- 2008 SE85, 2008 QS11, 2004 EN20, 2002 TB70, 2002 SP, 2001 SW269, 189700
`113`	Drebach Obs. in Germany, 1 in MPEC 2008-S87 -- 2008 SC85
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-S90 -- 2008 SG148
`F654`	Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-S87 -- 2008 SC85
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-S85 -- 96744
`J95`	Great Shefford Obs. in England, 3 in MPECs 2008-S86, 2008-S87 & 2008-S88 -- 2008 SD85, 2008 SC85, 2008 SB85
`240`	Herrenberg Obs. in Germany, 3 in MPEC 2008-S85 -- 2008 SR7, 2001 SK9, 141851
`A35`	Hormersdorf Obs. in Germany, 1 in MPEC 2008-S85 -- 2008 SQ
`701`	Junk Bond Obs. in Arizona, 1 in MPEC 2008-S87 -- 2008 SC85
`J66`	Kinver Obs. in England, 1 in MPEC 2008-S87 -- 2008 SC85
`J59`	Linceo Obs. in Spain, 1 in MPEC 2008-S85 -- 2008 SR1
`A06`	Mataro Obs. in Spain, 2 in MPEC 2008-S85 -- 4179, 1620
`B67`	Mirasteilas Obs. in Switzerland, 4 in MPEC 2008-S85 -- 2008 PL3, 168044, 162900, 136923
`108`	Montelupo Obs. in Italy, 1 in MPEC 2008-S85 -- 8567
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2008-S86 & 2008-S87 -- 2008 SC85, 2008 SB85
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2008-S85, 2008-S86, 2008-S87, 2008-S88, 2008-S89, 2008-S90, 2008-S91 & 2008-S92 -- 2008 SJ148, 2008 SH148, 2008 SG148, 2008 SE85, 2008 SD85, 2008 SC85, 2008 SB85, 90075, 162039, 155140
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2008-S85 -- 2008 RH1
`423`	North Ryde Obs. in New South Wales, 1 in MPEC 2008-S85 -- 3753
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 4 in MPECs 2008-S86, 2008-S88, 2008-S90 & 2008-S91 -- 2008 SH148, 2008 SG148, 2008 SD85, 2008 SB85
`D90.`	Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2008-S89 -- 2008 SE85
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2008-S87 -- 2008 SC85
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-S89 -- 2008 SE85
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2008-S86 & 2008-S87 -- 2008 SC85, 2008 SB85
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-S85 -- 2007 RF5, 2001 RV17
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-S86 -- 2008 SB85
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2008-S85, 2008-S86 & 2008-S87 -- 2008 SW11, 2008 SC85, 2008 SB85, 2006 UK, 2005 CN, 2000 KW43, 1998 QE2, 1997 US2
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-S90 -- 2008 SG148
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2008-S85 -- 4257

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

Impact Risk Monitoring on 29 September '08

**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.
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 SE85	JPL Sentry	2111	2015-2105	29	3.7e-08	-4.18	-4.28	0	JPL: "Analysis based on 17 observations spanning .95911 days (2008-Sep-28.44782 to 2008-Sep-29.40693)." Diameter approximately 0.390 km. from mean, weighted H=19.7.

2008 SH82	JPL Sentry	2111	2032-2106	29	3.0e-07	-4.66	-5.26	0	JPL: "Analysis based on 18 observations spanning 3.0472 days (2008-Sep-26.21299 to 2008-Sep-29.26018)." Diameter approximately 0.215 km. from mean, weighted H=21.0.

2008 SV11	JPL Sentry	2358	2009-2089	16	5.0e-07	-1.13	-1.13	0	JPL: "Analysis based on 34 observations spanning 4.0310 days (2008-Sep-25.26245 to 2008-Sep-29.2934)." Diameter approximately 0.781 km. from mean, weighted H=18.2.
2008 SV11	NEODyS	1429	2009-2085	20	1.05e-06	-0.63	-0.63	0	NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/09/28.099."

2008 ST7	JPL Sentry	1429	2073-2108	62	3.1e-05	-4.34	-5.16	0	JPL: "Analysis based on 39 observations spanning 3.9205 days (2008-Sep-24.29993 to 2008-Sep-28.22045)." Diameter approximately 0.053 km. from mean, weighted H=24.0.
2008 ST7	NEODyS	1429	2050-2089	14	5.06e-06	-5.02	-5.41	0	NEODyS: "Based on 42 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/09/28.221."

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 September '08

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

2358	Noted that JPL Sentry has updated its 2008 SV11 risk assessment - see above
2302	Grabbed MPEC 2008-S90 - 2008 SG148 - see above Grabbed MPEC 2008-S91 - 2008 SH148 - see above Grabbed MPEC 2008-S92 - 2008 SJ148 - see above
2111	Noted that JPL Sentry has posted 2008 SE85 as an impact risk - see above Noted that JPL Sentry has posted 2008 SH82 as an impact risk - see above
1701	Grabbed MPEC 2008-S86 - 2008 SB85 - see above Grabbed MPEC 2008-S87 - 2008 SC85 - see above Grabbed MPEC 2008-S88 - 2008 SD85 - see above Grabbed MPEC 2008-S89 - 2008 SE85 - see above
1429	Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above Noted that NEODyS has updated its 2008 ST7 risk assessment - see above Noted that NEODyS has updated its 2008 SV11 risk assessment - see above Grabbed MPEC 2008-S85 - Daily Orbit Update - see above
0429	Grabbed MPEC 2008-S84 - 2007 TD66 - see above

http://www.HohmannTransfer.com/mn/08/08273_0929.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2008 Columbine, Inc. - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com> (HTML 4.01 validation).
Important news updates are flagged by A/CC's RSS news feed (link).