2008-09-28 Tracking News

Contents on 28 September '08

IAU Minor Planet Center
- NEOCP Activity -- eight listings: 8 updated
- New MPECs -- one MPEC
Observers -- 20 observing facilities
Impact Risk Monitoring -- two 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 28 September '08

The MPC's NEO Confirmation Page has 8 listings: 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had eight updated listings. Of these, two were "one nighters."

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 28 September '08

Minor Planet Electronic Circulars

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

<< DOU on 28 Sept. '08 >> MPEC 2008-S83 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08S82J 2008 SJ82 (arc=1 day, H=20.8 ~234m) from the Siding Spring Survey (SSS) (Sept. 27.78p2)
K08S82H 2008 SH82 (arc=1 day, H=21.2 ~195m) from Astronomical Research Obs. (ARO) (Sept. 27.12-13p3) and Sandlot Obs. (Sept. 27.20-21p2)
Observations of recently (no longer) risk-listed objects
K08R00V 2008 RV (arc=24 days, H=21.7 ~155m) from El Leoncito Obs. (Sept. 13.24-25p2)
K08Q11S 2008 QS11 (arc=31 days, H=19.9 ~355m) from El Leoncito Obs. (Sept. 11.26-28p3, 14.20-22p3 & 15.20-22p3), SSS (Sept. 26.79p2 & 27.79p2), and Vallemare di Borbona Obs. (Sept. 28.05-06p3)
K08Q03T 2008 QT3 (arc=33 days, H=18.5 ~676m) from the Catalina Sky Survey (CSS) (Sept. 27.22-25p4)
Observations of small asteroids (H>22.0)
K08R24W 2008 RW24 (arc=20 days, H=22.9 ~89m) from ARO (Sept. 25.41-42p3)
Observations of other objects
K08S07R 2008 SR7 (arc=2 days, H=19.9 ~355m) from ARO (Sept. 25.08-10p3)
K08S07Q 2008 SQ7 (arc=2 days, H=19.6 ~407m) from ARO (Sept. 25.41p3)
K08S07P 2008 SP7 (Q=4.301 AU, arc=4 days, H=19.1 ~513m) from ARO (Sept. 25.31-32p3) and Mt. John Obs. (Sept. 27.62p3)
K08S01R 2008 SR1 (arc=4 days, H=20.3 ~295m) from SSS (Sept. 26.68p2 & 27.60p2)
K08S00Q 2008 SQ (arc=7 days, H=19.4 ~446m) from Petit Jean Mtn. South Obs. (PJMSO) (Sept. 27.37-38p6) and Naef Obs. (Sept. 27.89-91p4)
K08P03L 2008 PL3 (arc=49 days, H=19.4 ~446m) from El Leoncito Obs. (Sept. 11.18-19p3)
K08P03H 2008 PH3 (arc=55 days, H=21.6 ~162m) from SSS (Sept. 27.61p2)
K08O08P 2008 OP8 (arc=59 days, H=19.7 ~389m) from ARO (Sept. 27.15-16p2 at V=22.1-3)
K08M01R 2008 MR1 (arc=3 opp, H=18.4 ~708m) from PJMSO (Sept. 27.38-41p6) and Drebach Obs. (Sept. 27.98p5)
K08K05Z 2008 KZ5 (arc=120 days, H=20.0 ~339m) from SSS (Sept. 26.45p2)
K08J07Z 2008 JZ7 (Q=4.382 AU, arc=145 days, H=18.6 ~645m) from PJMSO (Sept. 27.26-27p5)
K08H38B 2008 HB38 (arc=150 days, H=21.1 ~204m) from the Mt. Lemmon Survey (MLS) (Sept. 27.47-49p4)
K06T00C 2006 TC (q=0.136 AU, arc=2 opp, H=18.8 ~589m) from SSS (Sept. 27.61-62p4) and Mt. John Obs. (Sept. 27.64p3)
K06T00B 2006 TB (arc=2 opp, H=20.0 ~339m) from SSS (Sept. 27.71-72p4)
K06B07T 2006 BT7 (arc=4 opp, H=18.3 ~741m) from Bergen-Enkheim Obs. (Sept. 27.01-14p10)
K05W01D 2005 WD1 (i=43.1°, arc=3 opp, H=16.4 ~1.78 km) from SSS (Sept. 27.67-69p4)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from PJMSO (Sept. 27.24-25p5) and Chabot Obs. (Sept. 27.33-34p3)
K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.8 ~1.48 km) from Posadas Obs. (Sept. 26.90-91p3)
K02S41S 2002 SS41 (i=63.7°, arc=3 opp, H=17.3 ~1.17 km) from Posadas Obs. (Sept. 27.02p3)
K01S03Q 2001 SQ3 (arc=2 opp, H=21.6 ~162m) from CSS (Sept. 27.22-25p3)
K00T28V 2000 TV28 (arc=3 opp, H=21.6 ~162m) from ARO (Sept. 27.35-37p3 at V=22.0-22.1) and MLS (Sept. 27.47-49p4)
J0119 190119 2004 VA64 from Carmelita Obs. (Sept. 27.97-98p3)
I5851 185851 2000 DP107 from Taurus-1 Obs. (Sept. 27.97-98p8)
G4400 164400 2005 GN59 from Vitebsk Obs. (Sept. 26.84-85p6) and Posadas Obs. (Sept. 26.96p3)
G3000 163000 2001 SW169 from El Leoncito Obs. (Sept. 11.21-22p3 & 13.13-15p3) and Posadas Obs. (Sept. 26.00p3)
F3951 153951 2002 AC3 from ARO (Sept. 27.18-20p3 at V=21.9-22.2)
E2348 142348 2002 RX211 from CSS (Sept. 27.41-43p4)
D7032 137032 1998 UO1 from North Obs. (Sept. 26.83-84p4) and Taurus-1 Obs. (Sept. 28.12p7)
87684 87684 2000 SY2 from El Leoncito Obs. (Sept. 15.28p1)
86829 86829 2000 GR146 from El Leoncito Obs. (Sept. 15.30-31p2)
85818 85818 1998 XM4 from Inastars Obs. (Sept. 27.90-91p4)
66008 66008 1998 QH2 from Herrenberg Obs. (Sept. 27.78-79p7)
39572 39572 1993 DQ1 from El Leoncito Obs. (Sept. 14.04-05p3) and Herrenberg Obs. (Sept. 27.79-81p14)
05332 5332 1990 DA from El Leoncito Obs. (Sept. 14.21-23p3 & 15.22-24p3)
04179 4179 Toutatis (1989 AC) from El Leoncito Obs. (Sept. 13.06-08p3, 14.06-07p3 & 15.06-07p3)
03691 3691 Bede (1982 FT) from El Leoncito Obs. (Sept. 12.98-00p4, 13.99-01p3 & 15.01-02p3)

Observers on 28 September '08

A total of 20 observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-S83 -- 2008 SR7, 2008 SQ7, 2008 SP7, 2008 SH82, 2008 RW24, 2008 OP8, 2000 TV28, 153951
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-S83 -- 2006 BT7
`B20`	Carmelita Obs. in Spain, 1 in MPEC 2008-S83 -- 190119
`703`	Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2008-S83 -- 2008 QT3, 2001 SQ3, 142348
`G58`	Chabot Obs. in northern California, 1 in MPEC 2008-S83 -- 2005 TZ51
`113`	Drebach Obs. in Germany, 1 in MPEC 2008-S83 -- 2008 MR1
`808`	El Leoncito Obs. in Argentina, 10 in MPEC 2008-S83 -- 2008 RV, 2008 QS11, 2008 PL3, 87684, 86829, 39572, 163000, 5332, 4179, 3691
`240`	Herrenberg Obs. in Germany, 2 in MPEC 2008-S83 -- 66008, 39572
`B15`	Inastars Obs. in Germany, 1 in MPEC 2008-S83 -- 85818
`474`	Mt. John Obs. in New Zealand, 2 in MPEC 2008-S83 -- 2008 SP7, 2006 TC
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2008-S83 -- 2008 HB38, 2000 TV28
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2008-S83 -- 2008 SQ
`J69`	North Obs. in England, 1 in MPEC 2008-S83 -- 137032
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2008-S83 -- 2008 SQ, 2008 MR1, 2008 JZ7, 2005 TZ51
`J53`	Posadas Obs. in Spain, 4 in MPEC 2008-S83 -- 2003 GW, 2002 SS41, 164400, 163000
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2008-S83 -- 2008 SH82
`E12`	Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-S83 -- 2008 SR1, 2008 SJ82, 2008 QS11, 2008 PH3, 2008 KZ5, 2006 TC, 2006 TB, 2005 WD1
`A98`	Taurus-1 Obs. in Belarus, 2 in MPEC 2008-S83 -- 185851, 137032
`A55`	Vallemare di Borbona Obs. in Italy, 1 in MPEC 2008-S83 -- 2008 QS11
`B42`	Vitebsk Obs. in Belarus, 1 in MPEC 2008-S83 -- 164400

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

Impact Risk Monitoring on 28 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 SJ82	JPL Sentry	1456	2088-2096	4	3.2e-08	-5.67	-6.07	0	JPL: "Analysis based on 15 observations spanning 1.0351 days (2008-Sep-26.74755 to 2008-Sep-27.7827)." Diameter approximately 0.240 km. from mean, weighted H=20.8.
2008 SJ82	NEODyS	1456	2088	1	7.46e-09	-6.36	-6.36	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/09/26.748 to 2008/09/27.783."

2008 SH82	NEODyS	1456	2025-2081	22	3.27e-08	-5.35	-5.90	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/09/27.240."

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 28 September '08

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

1456	Noted that NEODyS has posted 2008 SH82 as an impact risk - see above Noted that JPL Sentry has updated its 2008 SJ82 risk assessment - see above Noted that NEODyS has posted 2008 SJ82 as an impact risk - see above Grabbed MPEC 2008-S83 - Daily Orbit Update - see above

http://www.HohmannTransfer.com/mn/08/08272_0928.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).