2008-09-30 Tracking News

Contents on 30 September '08

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- eight listings: 1 new, 7 updated
- New MPECs -- four MPECs
Observers -- 29 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.

Radar Astrometry on 30 September '08

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added the following small-body radar observing work:

Data addition noted at 2249 UTC when the database was dated 30 Sept.

137032 1998 UO1 from Goldstone DSS-14 70m antenna (Sept. 26.47 range & 27.31 range) - see links

NEOCP Activity on 30 September '08

The MPC's NEO Confirmation Page has 8 listings: 1 new, 7 updated

When last checked at 2359 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and seven updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of twelve objects listed on the NEOCP at some point today.

New MPECs on 30 September '08

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been four MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-S93 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-S94 time-stamped "18:03 UT" - 2008 SX148 - see below
MPEC 2008-S95 time-stamped "18:07 UT" - 2008 SY148 - see below
MPEC 2008-S96 time-stamped "18:51 UT" - Comet C/2008 S3 (Boattini)

MPEC 2008-S96 - "18:51 UT" - Comet C/2008 S3 (Boattini)

CK08S030 C/2008 S3 (Boattini) (i=157.9°, q=3.128 AU, TP=2011 Apr. 4.172 TT) from the Mt. Lemmon Survey (MLS) (Sept. 29.49-51p4, 30.29-31p4 & 30.43-45p3), Sandlot Obs. (Sept. 30.36-38p3), RAS Obs. Mayhill (Sept. 30.39-42p3), Cordell-Lorenz Obs. (Sept. 30.39-42p5), and Table Mtn. Obs. (Sept. 30.49-51p4)

MPEC 2008-S95 - "18:07 UT" - 2008 SY148

K08SE8Y 2008 SY148 (borderline-small, Earth MOID=4.9 LD, H=21.8 ~148m) was discovered at 0943 UT on 29 Sept. by LINEAR, which observed it at Sept. 29.41-44p4. The discovery was confirmed by Sandlot Obs. (Sept. 30.39-40p3) and Jim Young via Table Mtn. Obs. (Sept. 30.52-53p4).

MPEC 2008-S94 - "18:03 UT" - 2008 SX148

K08SE8X 2008 SX148 (small asteroid, H=23.7 ~62m) was discovered at 0603 UT on 29 Sept. by MLS, which observed it at Sept. 29.25-27p4 at V=21.2-21.4, 29.32-33p4 at V=21.0-21.2, and 30.40p4 at V=21.6-22.4. The discovery was confirmed by Dave Balam via Plaskett 1.8m Telescope (Sept. 29.35-36p3) and the Spacewatch 1.8m telescope (Sept. 30.39-41p6).

<< DOU on 30 Sept. '08 >> MPEC 2008-S93 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08S85E 2008 SE85 (arc=1 day, H=19.7 ~389m) from Astronomical Research Obs. (ARO) (Sept. 29.37-38p3)
K08S82H 2008 SH82 (arc=3 days, H=21.2 ~195m) from Spacewatch 1.8m (Sept. 29.25-26p3)
K08S11V 2008 SV11 (Q=4.543 AU, arc=4 days, H=18.1 ~812m) from Desert Moon Obs. (Sept. 29.23-29p3) and Spacewatch 1.8m (Sept. 29.27-28p3)
K08S07T 2008 ST7 (small asteroid, arc=5 days, H=24.0 ~54m) from ARO (Sept. 27.14-15p3), Bergen-Enkheim Obs. (Sept. 28.94-97p4), and Spacewatch 1.8m (Sept. 29.32-33p2)
Observations of recently (no longer) risk-listed objects
K08S00O 2008 SO (arc=8 days, H=20.8 ~234m) from ARO (Sept. 27.16-17p4) and Desert Moon Obs. (Sept. 29.45-48p3)
K08R01J 2008 RJ1 (arc=25 days, H=17.8 ~933m) from Spacewatch 1.8m (Sept. 29.28-29p3) and Desert Moon Obs. (Sept. 29.37-42p3)
K08R01H 2008 RH1 (small asteroid, arc=25 days, H=22.6 ~102m) from Spacewatch 1.8m (Sept. 29.29-30p3)
K08R01G 2008 RG1 (arc=25 days, H=20.7 ~245m) from Spacewatch 1.8m (Sept. 29.30-31p2)
K08Q11S 2008 QS11 (arc=33 days, H=19.8 ~371m) from CEAMIG-REA (Sept. 29.24-25p25) and Yamagata Obs. (Sept. 29.64-65p6)
Observations of small asteroids (H>22.0)
K08S85D 2008 SD85 (arc=1 day, H=23.1 ~81m) from ARO (Sept. 29.24-25p3)
K08S08F 2008 SF8 (Q=4.495 AU, arc=4 days, H=23.7 ~62m) from MLS (Sept. 29.22-24p4) and Lothar Kurtze via Faulkes Telescope North (Sept. 29.29p6)
K08R01K 2008 RK1 (Q=4.378 AU, arc=25 days, H=22.2 ~123m) from Spacewatch 1.8m (Sept. 29.33-34p3)
K08Q11W 2008 QW11 (arc=32 days, H=23.3 ~74m) from ARO (Sept. 27.35-36p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K07T66D 2007 TD66 (arc=2 opp, H=21.8 ~148m) from David Tholen's team on Mauna Kea (Sept. 16.55-56p3 at R=22.1-3)
Observations of other objects
K08S11W 2008 SW11 (arc=4 days, H=21.1 ~204m) from Spacewatch 1.8m (Sept. 29.39-40p3)
K08S07X 2008 SX7 (arc=8 days, H=18.4 ~708m) from LINEAR (Sept. 28.13-15p3) and Desert Moon Obs. (Sept. 29.08-10p3)
K08S07V 2008 SV7 (arc=3 days, H=21.4 ~178m) from ARO (Sept. 27.32p3)
K08S07Q 2008 SQ7 (arc=4 days, H=19.7 ~389m) from ARO (Sept. 27.37p3)
K08S07P 2008 SP7 (Q=4.264 AU, arc=6 days, H=19.1 ~513m) from ARO (Sept. 27.33-34p3), Klet Obs. (Sept. 28.99-00p8), and the Catalina Sky Survey (CSS) (Sept. 29.44-45p2)
K08S01Z 2008 SZ1 from ARO (Sept. 27.24-25p3)
K08S01W 2008 SW1 (arc=5 days, H=21.7 ~155m) from ARO (Sept. 27.26-27p3) and LINEAR (Sept. 28.29-34p4)
K08S01T 2008 ST1 from ARO (Sept. 27.31-32p3)
K08S01R 2008 SR1 (arc=5 days, H=20.3 ~295m) from Klet Obs. (Sept. 28.90-91p8)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.2 ~776m) from Klet Obs. (Sept. 28.92-93p8), Ametlla del Valles Obs. (Sept. 29.04-05p4), Petit Jean Mtn. South Obs. (PJMSO) (Sept. 29.32-33p6), and Capannoli Obs. (Sept. 29.89p1 & 29.94p1)
K08S01N 2008 SN1 (Q=4.045 AU, arc=9 days, H=19.6 ~407m) from ARO (Sept. 27.18-19p4 & 29.25-26p3)
K08S00Q 2008 SQ (arc=8 days, H=19.4 ~446m) from ARO (Sept. 27.25-26p3) and Klet Obs. (Sept. 28.98p8)
K08S00E 2008 SE (arc=10 days, H=19.0 ~537m) from ARO (Sept. 27.20p3), Klet Obs. (Sept. 28.95-96p8), PJMSO (Sept. 29.34-35p6), El Guijo Obs. (Sept. 29.90-93p2), and Capannoli Obs. (Sept. 29.90-91p2)
K08R80E 2008 RE80 (arc=18 days, H=18.2 ~776m) from LINEAR (Sept. 28.23-27p5) and Desert Moon Obs. (Sept. 29.32-34p3)
K08R26T 2008 RT26 (arc=20 days, H=19.3 ~467m) from ARO (Sept. 27.38-39p3)
K08R24Z 2008 RZ24 (arc=20 days, H=19.9 ~355m) from ARO (Sept. 27.28-29p3)
K08R00T 2008 RT (arc=27 days, H=19.7 ~389m) from ARO (Sept. 27.40-41p3) and LINEAR (Sept. 28.35-40p5)
K08Q03T 2008 QT3 (arc=35 days, H=18.5 ~676m) from LINEAR (Sept. 29.16-21p4)
K08Q00C 2008 QC (arc=41 days, H=20.6 ~257m) from CSS (Sept. 29.32-34p3)
K08P09H 2008 PH9 (Q=4.546 AU, arc=54 days, H=16.5 ~1.70 km) from Desert Moon Obs. (Sept. 29.13-18p3)
K08N00U 2008 NU (Q=4.202 AU, arc=91 days, H=17.6 ~1.02 km) from Capannoli Obs. (Sept. 29.95-96p2)
K08L08W 2008 LW8 (arc=3 opp, H=17.4 ~1.12 km) from LINEAR (Sept. 28.42-46p4)
K08K05Z 2008 KZ5 (arc=123 days, H=20.0 ~339m) from the Siding Spring Survey (SSS) (Sept. 29.42-46p4)
K08E69C 2008 EC69 (Q=4.456 AU, arc=2 opp, H=17.2 ~1.23 km) from SSS (Sept. 29.66-70p4)
K07T66E 2007 TE66 (arc=2 opp, H=21.4 ~178m) from LINEAR (Sept. 29.22-26p4)
K06U00K 2006 UK (arc=3 opp, H=20.1 ~323m) from Spacewatch 1.8m (Sept. 29.48-49p3)
K06G00Z 2006 GZ (arc=2 opp, H=19.5 ~426m) from LINEAR (Sept. 28.35-37p3)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from PJMSO (Sept. 29.22-23p5) and Madonna di Dossobuono Obs. (Sept. 29.83-84p3)
K05S19H 2005 SH19 (i=47.6°, q=0.322 AU, Q=4.216 AU, arc=3 opp, H=17.1 ~1.29 km) from Spacewatch 1.8m (Sept. 29.41p2)
K05R34D 2005 RD34 (arc=2 opp, H=20.3 ~295m) from LINEAR (Sept. 28.12-16p3) and CSS (Sept. 29.21-23p4)
K04X44N 2004 XN44 (arc=2 opp, H=18.4 ~708m) from LINEAR (Sept. 28.22-27p5)
K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.8 ~1.48 km) from Dresden Obs. (Sept. 27.80-82p6) and Peschiera del Garda Obs. (Sept. 29.82-84p3)
K03C17N 2003 CN17 (arc=2 opp, H=18.9 ~562m) from MLS (Sept. 29.19-20p4)
K02V17V 2002 VV17 (arc=4 opp, H=20.0 ~339m) from PJMSO (Sept. 29.20-21p5) and Madonna di Dossobuono Obs. (Sept. 29.88p3)
K01XQ6W 2001 XW266 (arc=3 opp, H=19.5 ~426m) from MLS (Sept. 29.14-16p4)
K01U16Z 2001 UZ16 (arc=3 opp, H=19.5 ~426m) from El Guijo Obs. (Sept. 29.80-83p3)
K01S10G 2001 SG10 (arc=5 opp, H=20.3 ~295m) from LINEAR (Sept. 28.29-34p5)
J99R32D 1999 RD32 (Q=4.672 AU, arc=4 opp, H=16.4 ~1.78 km) from MLS (Sept. 29.42-43p4)
J98S70J 1998 SJ70 (arc=3 opp, H=18.4 ~708m) from PJMSO (Sept. 29.35-36p5)
J98Q02E 1998 QE2 (arc=5 opp, H=16.5 ~1.70 km) from Spacewatch 1.8m (Sept. 29.49-50p3)
J97U02S 1997 US2 (arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (Sept. 29.47p3)
I5851 185851 2000 DP107 from Eridanus Obs. (Sept. 27.92-95p5) and Casasco Obs. (Sept. 29.03p1 & 29.08p1)
G4400 164400 2005 GN59 from Eridanus Obs. (Sept. 27.96-98p5 & 28.90-91p3) and Madonna di Dossobuono Obs. (Sept. 29.86p3)
G3000 163000 2001 SW169 from LINEAR (Sept. 28.17-22p4)
G2900 162900 2001 HG31 from LINEAR (Sept. 28.29-34p5)
G2635 162635 2000 SS164 from LINEAR (Sept. 28.17-20p4)
G2510 162510 2000 QW69 from LINEAR (Sept. 28.11-16p3) and CSS (Sept. 29.24-27p4)
G2215 162215 1999 TL12 from Spacewatch 1.8m (Sept. 29.33-34p3)
E0288 140288 2001 SN289 from LINEAR (Sept. 28.17-22p5)
D7799 137799 1999 YB from LINEAR (Sept. 28.29-34p5)
D7032 137032 1998 UO1 from Madonna di Dossobuono Obs. (Sept. 29.87p3)
A8906 108906 2001 PL9 from LINEAR (Sept. 28.16-21p5) and CSS (Sept. 29.25-27p3)
96744 96744 1999 OW3 from LINEAR (Sept. 29.29-34p5)
88188 88188 2000 XH44 from MLS (Sept. 29.33-35p4)
87311 87311 2000 QJ1 from MLS (Sept. 29.14-16p4)
52689 52689 1998 FF2 from MLS (Sept. 29.42-43p4)
16960 16960 1998 QS52 from Eridanus Obs. (Sept. 27.83-85p4 & 28.85p3)
16834 16834 1997 WU22 from LINEAR (Sept. 28.44-46p3)
11398 11398 1998 YP11 from LINEAR (Sept. 28.10-15p5)
08567 8567 1996 HW1 from CSS (Sept. 29.35-38p4)
05143 5143 Heracles (1991 VL) from MLS (Sept. 29.33-35p4)
04179 4179 Toutatis (1989 AC) from Vicksburg Obs. (Sept. 28.10-11p9 & 29.10-12p9) and LINEAR (Sept. 28.10-15p5)
02201 2201 Oljato (1947 XC) from LINEAR (Sept. 28.41-46p4)
01917 1917 Cuyo (1968 AA) from LINEAR (Sept. 29.41-46p5)
01620 1620 Geographos (1951 RA) from Eridanus Obs. (Sept. 27.89-90p3)

Observers on 30 September '08

A total of 29 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B37`	Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-S93 -- 2008 SQ1
`H55`	Astronomical Research Obs. (ARO) in Illinois, 17 in MPEC 2008-S93 -- 2008 SZ1, 2008 SW1, 2008 SV7, 2008 ST7, 2008 ST1, 2008 SQ7, 2008 SQ, 2008 SP7, 2008 SO, 2008 SN1, 2008 SE85, 2008 SE, 2008 SD85, 2008 RZ24, 2008 RT26, 2008 RT, 2008 QW11
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-S93 -- 2008 ST7
`I77`	CEAMIG-REA in Brazil, 1 in MPEC 2008-S93 -- 2008 QS11
`B09`	Capannoli Obs. in Italy, 3 in MPEC 2008-S93 -- 2008 SQ1, 2008 SE, 2008 NU
`B66`	Casasco Obs. in Italy, 1 in MPEC 2008-S93 -- 185851
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-S93 -- 2008 SP7, 2008 QC, 2005 RD34, 162510, 108906, 8567
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-S96 -- C/2008 S3
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2008-S93 -- 2008 SX7, 2008 SV11, 2008 SO, 2008 RJ1, 2008 RE80, 2008 PH9
`639`	Dresden Obs. in Germany, 1 in MPEC 2008-S93 -- 2003 GW
`J27`	El Guijo Obs. in Spain, 2 in MPEC 2008-S93 -- 2008 SE, 2001 UZ16
`A27`	Eridanus Obs. in Germany, 4 in MPEC 2008-S93 -- 185851, 16960, 164400, 1620
`F652`	Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-S93 -- 2008 SF8
`253`	Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 137032
`046`	Klet Obs. in the Czech Republic, 5 in MPEC 2008-S93 -- 2008 SR1, 2008 SQ1, 2008 SQ, 2008 SP7, 2008 SE
`704`	LINEAR in New Mexico, 25 in MPECs 2008-S93 & 2008-S95 -- 2008 SY148, 2008 SX7, 2008 SW1, 2008 RT, 2008 RE80, 2008 QT3, 2008 LW8, 2007 TE66, 2006 GZ, 2005 RD34, 2004 XN44, 2001 SG10, 96744, 16834, 163000, 162900, 162635, 162510, 140288, 137799, 11398, 108906, 4179, 2201, 1917
`560`	Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2008-S93 -- 2005 TZ51, 2002 VV17, 164400, 137032
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-S93 -- 2007 TD66
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2008-S93, 2008-S94 & 2008-S96 -- 2008 SX148, 2008 SF8, C/2008 S3, 2003 CN17, 2001 XW266, 1999 RD32, 88188, 87311, 52689, 5143
`A53`	Peschiera del Garda Obs. in Italy, 1 in MPEC 2008-S93 -- 2003 GW
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-S93 -- 2008 SQ1, 2008 SE, 2005 TZ51, 2002 VV17, 1998 SJ70
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2008-S94 -- 2008 SX148
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-S96 -- C/2008 S3
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2008-S95 & 2008-S96 -- 2008 SY148, C/2008 S3
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-S93 -- 2008 KZ5, 2008 EC69
`291`	Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2008-S93 & 2008-S94 -- 2008 SX148, 2008 SW11, 2008 SV11, 2008 ST7, 2008 SH82, 2008 RK1, 2008 RJ1, 2008 RH1, 2008 RG1, 2006 UK, 2005 SH19, 1998 QE2, 1997 US2, 162215
`673`	Table Mtn. Obs. in southern California, 1 in MPEC 2008-S96 -- C/2008 S3
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-S95 -- 2008 SY148
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2008-S93 -- 4179
`D89`	Yamagata Obs. in Japan, 1 in MPEC 2008-S93 -- 2008 QS11

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

Impact Risk Monitoring on 30 September '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 SH148	NEODyS	1516	2011-2087	66	4.42e-07	-6.72	-7.53	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/09/29.190 to 2008/09/29.292."
2008 SH148	JPL Sentry	0215	2011-2107	189	1.0e-06	-6.43	-7.12	0	JPL: "Analysis based on 11 observations spanning .10211 days (2008-Sep-29.18897 to 2008-Sep-29.29108)." Diameter approximately 0.020 km. from mean, weighted H=26.1.

2008 SE85	JPL Sentry	1515	2013-2107	39	6.5e-08	-3.72	-3.78	0	JPL: "Analysis based on 20 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 SE85	NEODyS	1515	2011-2090	103	1.96e-07	-3.02	-3.27	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/09/28.449 to 2008/09/29.408."

2008 SH82	NEODyS	1515	2032-2088	14	2.0e-07	-4.85	-5.40	0	NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/09/29.261."

2008 SV11	NEODyS	2249	2034-2089	13	9.07e-08	-3.41	-3.67	0	NEODyS #2 for the day: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/09/30.378."
2008 SV11	JPL Sentry	2116	2009-2085	11	1.4e-07	-3.00	-3.33	0	JPL: "Analysis based on 44 observations spanning 5.1147 days (2008-Sep-25.26245 to 2008-Sep-30.37718)." Diameter approximately 0.756 km. from mean, weighted H=18.3.

2008 ST7	JPL Sentry	1515	2073-2102	47	2.7e-05	-4.37	-5.10	0	JPL: "Analysis based on 48 observations spanning 5.0264 days (2008-Sep-24.29993 to 2008-Sep-29.32635)." Diameter approximately 0.053 km. from mean, weighted H=24.0.
2008 ST7	NEODyS	1515	2050-2089	9	4.18e-06	-5.08	-5.41	0	NEODyS: "Based on 51 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/09/29.327."

2008 KN11	NEODyS	1931	2046	1	2.32e-07	-5.62	-5.62	0	NEODyS: "Based on 132 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/21.154."

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 30 September '08

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

2249	Noted that NEODyS has updated its 2008 SV11 risk assessment - see above Noted Radar Astrometry database addition - see above
2116	Noted that JPL Sentry has updated its 2008 SV11 risk assessment - see above
1931	Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
1929	Grabbed MPEC 2008-S96 - Comet C/2008 S3 (Boattini) - see above
1858	Grabbed MPEC 2008-S94 - 2008 SX148 - see above Grabbed MPEC 2008-S95 - 2008 SY148 - see above
1516	Grabbed MPEC 2008-S93 - Daily Orbit Update - see above
1515	Noted that JPL Sentry has updated its 2008 SE85 risk assessment - see above Noted that NEODyS has posted 2008 SE85 as an impact risk - see above Noted that NEODyS has posted 2008 SH148 as an impact risk - see above Noted that NEODyS has updated its 2008 SH82 risk assessment - see above 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
0215	Noted that JPL Sentry has posted 2008 SH148 as an impact risk - see above

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