2008-10-10 Tracking News

Contents on 10 October '08

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 1 new, 6 updated
- New MPECs -- ten MPECs
Observers -- 24 observing facilities
Impact Risk Monitoring -- eight 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 10 October '08

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, five 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 10 October '08

Minor Planet Electronic Circulars

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

MPEC 2008-T111 time-stamped "03:04 UT" - 2008 TV25 - see below
MPEC 2008-T112 time-stamped "06:11 UT" - Daily Orbit Update - see below
MPEC 2008-T113 time-stamped "18:57 UT" - 2008 TL26 - see below
MPEC 2008-T114 time-stamped "19:02 UT" - 2008 TM26 - see below
MPEC 2008-T115 time-stamped "19:05 UT" - 2008 TN26 - see below
MPEC 2008-T116 time-stamped "19:08 UT" - 2008 TO26 - see below
MPEC 2008-T117 time-stamped "19:11 UT" - 2008 TP26 - see below
MPEC 2008-T118 time-stamped "19:14 UT" - 2008 TQ26 - see below
MPEC 2008-T119 time-stamped "20:18 UT" - 2008 TS26 - see below
MPEC 2008-T120 time-stamped "22:24 UT" - 2008 TT26

MPEC 2008-T120 - "22:24 UT" - 2008 TT26

K08T26T 2008 TT26 (small asteroid, Earth MOID=3.0 LD, H=23.9 ~56m) was discovered at 0407 UT on 9 Oct. by LINEAR, which observed it at Oct. 9.17-21p4. The discovery was confirmed by Astronomical Research Obs. (ARO) (Oct. 10.10-11p3) and Modra Obs. (Oct. 10.84-85p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 3.6 LD on 23 Oct.

MPEC 2008-T119 - "20:18 UT" - 2008 TS26

K08T26S 2008 TS26 (small asteroid, Earth MOID=0.0 LD, H=33.3 ~1m) was discovered at 0857 UT on 9 Oct. by the Mt. Lemmon Survey (MLS), which observed it at Oct. 9.33-44p20. This object is now within ten lunar distances (LD) of Earth, reaching 0.0 LD on 9 Oct. (INTRUDER).

MPEC 2008-T118 - "19:14 UT" - 2008 TQ26

K08T26Q 2008 TQ26 (risk-listed, Earth MOID=9.2 LD, H=23.4 ~71m) was discovered at 0913 UT on 9 Oct. by MLS, which observed it at Oct. 9.38-44p6 at V=21.3-22.6 and 10.30-32p4 at V=20.5-21.9. The discovery was confirmed by ARO (Oct. 10.22-25p3 at V=22.0-22.3).

MPEC 2008-T117 - "19:11 UT" - 2008 TP26

K08T26P 2008 TP26 (risk-listed, H=23.7 ~62m) was discovered at 0825 UT on 9 Oct. by MLS, which observed it at Oct. 9.35-41p7 at V=21.1-22.5 and 10.32-33p4 at V=21.0-22.0. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 9.49p2).

MPEC 2008-T116 - "19:08 UT" - 2008 TO26

K08T26O 2008 TO26 (H=20.0 ~339m) was discovered at 0742 UT on 9 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 9.32-39p8. The discovery was confirmed by Remanzacco Obs. (Oct. 9.92-95p3), Schiaparelli Obs. (Oct. 9.99p1 & 10.07p1), ARO (Oct. 10.26-27p3), MLS (Oct. 10.27p4), Kanab Obs. (Oct. 10.36-39p2), and Heath Rhoades via Table Mtn. Obs. (Oct. 10.41-43p4).

MPEC 2008-T115 - "19:05 UT" - 2008 TN26

K08T26N 2008 TN26 (H=20.0 ~339m) was discovered at 0711 UT on 9 Oct. by LINEAR, which observed it at Oct. 9.30-33p3. The discovery was confirmed by ARO (Oct. 10.18p3) and Rhoades/Table Mtn. (Oct. 10.36-37p4).

MPEC 2008-T114 - "19:02 UT" - 2008 TM26

K08T26M 2008 TM26 (small asteroid, H=23.1 ~81m) was discovered at 0645 UT on 9 Oct. by LINEAR, which observed it at Oct. 9.28-31p3 and 10.21-25p4. The discovery was confirmed by Remanzacco Obs. (Oct. 9.94p1), Schiaparelli Obs. (Oct. 10.11-12p3), and Cordell-Lorenz Obs. (Oct. 10.36-39p5).

MPEC 2008-T113 - "18:57 UT" - 2008 TL26

K08T26L 2008 TL26 (small asteroid, Q=4.142 AU, H=24.7 ~39m) was discovered at 0551 UT on 9 Oct. by MLS, which observed it at Oct. 9.24-28p8 at V=20.5-21.5, 9.38p4 at V=20.0-21.2, 10.25p4 at V=20.9-21.9, and 10.39-40p4 at V=21.0-22.2. The discovery was confirmed by MRO (Oct. 9.34-35p5).

<< DOU on 10 Oct. '08 >> MPEC 2008-T112 - "06:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K08T10R 2008 TR10 (arc=1 day, H=20.5 ~269m) from the Spacewatch 1.8m telescope (Oct. 9.44-45p3)
K08T03Z 2008 TZ3 (arc=3 days, H=20.4 ~282m) from Spacewatch 1.8m (Oct. 9.36-38p3)
K08T03C 2008 TC3 (small asteroid, arc=1 day, H=30.4 ~3m) from Taurus Hill Obs. (Oct. 6.93-94p4) and McCarthy Obs. (Oct. 7.02-06p9)
K08S07T 2008 ST7 (small asteroid, arc=15 days, H=24.1 ~51m) from ARO (Oct. 9.17-19p3) and Spacewatch 1.8m (Oct. 9.39-40p3)
Observations of recently (no longer) risk-listed objects
K08T04C 2008 TC4 (q=0.353 AU, arc=2 days, H=21.3 ~186m) from ARO (Oct. 9.22p2) and Spacewatch 1.8m (Oct. 9.40-41p3)
K08S85E 2008 SE85 (arc=10 days, H=19.8 ~371m) from Tiki Obs. (Oct. 8.59-61p2)
K08S11V 2008 SV11 (Q=4.505 AU, arc=14 days, H=18.2 ~776m) from ARO (Sept. 27.11p3) and MLS (Oct. 9.21-22p3)
K08S00R 2008 SR (almost small, arc=12 days, H=21.8 ~148m) from ARO (Sept. 26.35-37p3)
K08S00O 2008 SO (arc=18 days, H=20.8 ~234m) from MLS (Oct. 9.29-30p4)
Observations of small asteroids (H>22.0)
K08T09Y 2008 TY9 (arc=1 day, H=24.8 ~37m) from Jim Young via Table Mtn. Obs. (Oct. 9.19-22p3) and LINEAR (Oct. 9.22-27p5)
K08T09X 2008 TX9 (arc=1 day, H=26.2 ~19m) from ARO (Oct. 9.19-22p3) and MLS (Oct. 9.33-35p4)
K08T09N 2008 TN9 (arc=1 day, H=27.8 ~9m) from ARO (Oct. 9.14-15p3)
K08T04E 2008 TE4 (arc=2 days, H=23.9 ~56m) from ARO (Oct. 9.05-06p3 & 9.12-13p3)
K08T04A 2008 TA4 (arc=3 days, H=25.1 ~32m) from ARO (Oct. 9.10-11p3) and the Siding Spring Survey (SSS) (Oct. 9.52p2)
K08T03X 2008 TX3 (arc=3 days, H=25.0 ~34m) from ARO (Oct. 9.24-25p3)
K08T02F 2008 TF2 (arc=5 days, H=25.1 ~32m) from ARO (Oct. 9.09p3)
K08T02B 2008 TB2 (arc=3 days, H=24.6 ~41m) from Schiaparelli Obs. (Oct. 6.01p3)
K08T01C 2008 TC1 (arc=7 days, H=24.0 ~54m) from Spacewatch 1.8m (Oct. 9.32-33p2)
K08T00Z 2008 TZ (arc=7 days, H=25.4 ~28m) from Schiaparelli Obs. (Oct. 5.99-00p3) and ARO (Oct. 9.04-05p3)
K08SF0Y 2008 SY150 (arc=9 days, H=24.5 ~43m) from ARO (Oct. 9.12p3)
K08S08F 2008 SF8 (Q=4.462 AU, arc=14 days, H=23.7 ~62m) from MLS (Oct. 9.19-20p4)
K08R01E 2008 RE1 (arc=34 days, H=23.0 ~85m) from ARO (Sept. 26.28-29p5)
Observations of almost-small asteroids (21.7<H<=22.0)
K08T00F 2008 TF (arc=8 days, H=21.8 ~148m) from ARO (Oct. 9.05-06p3)
Observations of other objects
K08T10M 2008 TM10 (arc=2 days, H=19.1 ~513m) from LINEAR (Oct. 9.15-20p15) and Great Shefford Obs. (Oct. 9.83p3)
K08T09F 2008 TF9 (i=41.9°, Q=4.370 AU, arc=1 day, H=20.7 ~245m) from ARO (Oct. 9.09-10p3) and MLS (Oct. 9.17-18p4)
K08T04F 2008 TF4 (arc=3 days, H=19.1 ~513m) from Stia Obs. (Oct. 8.78-79p4) and Desert Moon Obs. (Oct. 9.27-28p3)
K08T04D 2008 TD4 (arc=2 days, H=19.6 ~407m) from Stia Obs. (Oct. 8.75-76p2) and ARO (Oct. 9.10-11p4)
K08T04B 2008 TB4 (i=41.2°, arc=3 days, H=20.9 ~224m) from ARO (Oct. 9.09p3) and Balzaretto Obs. (Oct. 9.79-81p3)
K08T02R 2008 TR2 (arc=2 days, H=19.7 ~389m) from Schiaparelli Obs. (Oct. 6.10-11p3)
K08T01A 2008 TA1 (arc=7 days, H=18.5 ~676m) from Desert Moon Obs. (Oct. 8.33-37p3) and Spacewatch 1.8m (Oct. 9.34-36p3)
K08S07R 2008 SR7 (arc=13 days, H=19.9 ~355m) from ARO (Sept. 27.05-07p3)
K08S07Q 2008 SQ7 (arc=16 days, H=19.7 ~389m) from Desert Moon Obs. (Oct. 9.44-46p3)
K08S07P 2008 SP7 (Q=4.200 AU, arc=16 days, H=19.0 ~537m) from Desert Moon Obs. (Oct. 9.41-42p3)
K08S01O 2008 SO1 (Q=4.203 AU, arc=5 days, H=19.4 ~446m) from ARO (Sept. 27.34-35p3)
K08S00E 2008 SE (arc=19 days, H=19.2 ~490m) from Hamamatsu-Yuto Obs. (Oct. 9.56-60p3 & 9.68-69p2)
K08R80E 2008 RE80 (arc=28 days, H=18.2 ~776m) from Desert Moon Obs. (Oct. 9.18-21p3)
K08R26T 2008 RT26 (arc=26 days, H=19.3 ~467m) from ARO (Sept. 26.39-41p5)
K08R24Z 2008 RZ24 (arc=31 days, H=20.1 ~323m) from ARO (Sept. 26.33-34p3)
K08R00T 2008 RT (arc=38 days, H=19.8 ~371m) from ARO (Sept. 26.38-39p6) and LINEAR (Oct. 9.41-46p5)
K08Q01D 2008 QD1 (arc=47 days, H=18.9 ~562m) from CSS (Oct. 9.22-25p4) and Desert Moon Obs. (Oct. 9.30-31p3)
K08Q00Z 2008 QZ (arc=48 days, H=20.4 ~282m) from CSS (Oct. 9.32-35p4)
K08Q00Y 2008 QY (arc=2 opp, H=18.6 ~645m) from ARO (Sept. 26.43p1)
K08Q00C 2008 QC (arc=51 days, H=20.6 ~257m) from MLS (Oct. 9.29-30p4)
K08P03L 2008 PL3 (arc=66 days, H=19.3 ~467m) from Balzaretto Obs. (Oct. 9.86p1)
K08M00Z 2008 MZ (Q=4.207 AU, arc=111 days, H=18.6 ~645m) from ARO (Sept. 26.43-44p3)
K08J07Z 2008 JZ7 (Q=4.382 AU, arc=155 days, H=18.6 ~645m) from La Sagra Obs. (Oct. 5.89-91p3)
K07M13M 2007 MM13 (i=38.2°, arc=2 opp, H=17.7 ~977m) from the Spacewatch 0.9m telescope (Oct. 9.44-46p3)
K06R36O 2006 RO36 (arc=3 opp, H=17.9 ~891m) from MLS (Oct. 9.47-48p4)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from La Sagra Obs. (Oct. 5.87-89p3)
K01T01W 2001 TW1 (arc=5 opp, H=19.1 ~513m) from MLS (Oct. 9.41-43p4)
K00F01L 2000 FL1 (i=43.6°, Q=4.178 AU, arc=2 opp, H=15.3 ~2.95 km, q=1.291 AU) from Desert Moon Obs. (Oct. 9.47-48p5)
J0758 190758 2001 QH96 from CSS (Oct. 9.46-48p4)
G3000 163000 2001 SW169 from CSS (Oct. 9.12-14p3)
G2980 162980 2001 RR17 from MLS (Oct. 9.14-15p4)
G2142 162142 1998 VR from MLS (Oct. 9.44-46p4)
E2348 142348 2002 RX211 from CSS (Oct. 9.40-42p4)
E1851 141851 2002 PM6 from La Sagra Obs. (Oct. 5.87-89p3)
D8847 138847 2000 VE62 from MLS (Oct. 9.19-21p4)
D7032 137032 1998 UO1 from Hamamatsu-Yuto Obs. (Oct. 6.49-50p5 & 9.40-41p9)
A5140 105140 2000 NL10 from LINEAR (Oct. 9.15-21p5)
90075 90075 2002 VU94 from Spacewatch 0.9m (Oct. 9.40-43p3)
88188 88188 2000 XH44 from MLS (Oct. 9.22-24p4)
65996 65996 1998 MX5 from LINEAR (Oct. 9.29-34p5)
54071 54071 2000 GQ146 from CSS (Oct. 9.32-35p4)
53319 53319 1999 JM8 from CSS (Oct. 9.43-46p8)
31221 31221 1998 BP26 from LINEAR (Oct. 9.28-34p5)
29075 29075 1950 DA from MLS (Oct. 9.35-37p4)
09856 9856 1991 EE from CSS (Oct. 9.49-50p4)
08567 8567 1996 HW1 from CSS (Oct. 9.37-39p8)
05143 5143 Heracles (1991 VL) from MLS (Oct. 9.22-24p4)
03200 3200 Phaethon (1983 TB) from LINEAR (Oct. 9.35-40p5)
01916 1916 Boreas (1953 RA) from LINEAR (Oct. 9.35-40p5)
01865 1865 Cerberus (1971 UA) from MLS (Oct. 9.33-34p4)
01627 1627 Ivar (1929 SH) from CSS (Oct. 9.47-48p4)
01620 1620 Geographos (1951 RA) from LINEAR (Oct. 9.29-34p5)

MPEC 2008-T111 - "03:04 UT" - 2008 TV25

K08T25V 2008 TV25 (risk-listed, Earth MOID=2.5 LD, H=19.8 ~371m) was discovered at 1024 UT on 9 Oct. by CSS, which observed it at Oct. 9.43-50p8. The discovery was confirmed by MRO (Oct. 9.51p4) and Vallemare di Borbona Obs. (Oct. 10.05-06p4).

Observers on 10 October '08

A total of 24 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 28 in MPECs 2008-T112, 2008-T115, 2008-T116, 2008-T118 & 2008-T120 -- 2008 TZ, 2008 TX9, 2008 TX3, 2008 TT26, 2008 TQ26, 2008 TO26, 2008 TN9, 2008 TN26, 2008 TF9, 2008 TF2, 2008 TF, 2008 TE4, 2008 TD4, 2008 TC4, 2008 TB4, 2008 TA4, 2008 SY150, 2008 SV11, 2008 ST7, 2008 SR7, 2008 SR, 2008 SO1, 2008 RZ24, 2008 RT26, 2008 RT, 2008 RE1, 2008 QY, 2008 MZ
`A81`	Balzaretto Obs. in Italy, 2 in MPEC 2008-T112 -- 2008 TB4, 2008 PL3
`703`	Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2008-T111, 2008-T112 & 2008-T116 -- 2008 TV25, 2008 TO26, 2008 QZ, 2008 QD1, 54071, 53319, 190758, 163000, 142348, 9856, 8567, 1627
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-T114 -- 2008 TM26
`448`	Desert Moon Obs. in New Mexico, 7 in MPEC 2008-T112 -- 2008 TF4, 2008 TA1, 2008 SQ7, 2008 SP7, 2008 RE80, 2008 QD1, 2000 FL1
`J95`	Great Shefford Obs. in England, 1 in MPEC 2008-T112 -- 2008 TM10
`379`	Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2008-T112 -- 2008 SE, 137032
`682`	Kanab Obs. in Utah, 1 in MPEC 2008-T116 -- 2008 TO26
`704`	LINEAR in New Mexico, 12 in MPECs 2008-T112, 2008-T114, 2008-T115 & 2008-T120 -- 2008 TY9, 2008 TT26, 2008 TN26, 2008 TM26, 2008 TM10, 2008 RT, 65996, 31221, 105140, 3200, 1916, 1620
`J75`	La Sagra Obs. in Spain, 3 in MPEC 2008-T112 -- 2008 JZ7, 2005 TZ51, 141851
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2008-T111, 2008-T113 & 2008-T117 -- 2008 TV25, 2008 TP26, 2008 TL26
`932`	McCarthy Obs. in Connecticut, 1 in MPEC 2008-T112 -- 2008 TC3
`118`	Modra Obs. in Slovakia, 1 in MPEC 2008-T120 -- 2008 TT26
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2008-T112, 2008-T113, 2008-T116, 2008-T117, 2008-T118 & 2008-T119 -- 2008 TX9, 2008 TS26, 2008 TQ26, 2008 TP26, 2008 TO26, 2008 TL26, 2008 TF9, 2008 SV11, 2008 SO, 2008 SF8, 2008 QC, 2006 RO36, 2001 TW1, 88188, 29075, 162980, 162142, 138847, 5143, 1865
`473`	Remanzacco Obs. in Italy, 2 in MPECs 2008-T114 & 2008-T116 -- 2008 TO26, 2008 TM26
`204`	Schiaparelli Obs. in Italy, 5 in MPECs 2008-T112, 2008-T114 & 2008-T116 -- 2008 TZ, 2008 TR2, 2008 TO26, 2008 TM26, 2008 TB2
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2008-T112 -- 2008 TA4
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-T112 -- 2007 MM13, 90075
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2008-T112 -- 2008 TZ3, 2008 TR10, 2008 TC4, 2008 TC1, 2008 TA1, 2008 ST7
`A78`	Stia Obs. in Italy, 2 in MPEC 2008-T112 -- 2008 TF4, 2008 TD4
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-T112 -- 2008 TY9
`6739`	Heath Rhoades via Table Mtn. Obs. in southern California, 2 in MPECs 2008-T115 & 2008-T116 -- 2008 TO26, 2008 TN26
`A95`	Taurus Hill Obs. in Finland, 1 in MPEC 2008-T112 -- 2008 TC3
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-T112 -- 2008 SE85
`A55`	Vallemare di Borbona Obs. in Italy, 1 in MPEC 2008-T111 -- 2008 TV25

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

Impact Risk Monitoring on 10 October '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 TQ26	JPL Sentry	2231	2012-2103	120	6.2e-08	-5.72	-6.38	0	JPL: "Analysis based on 13 observations spanning .93580 days (2008-Oct-09.38413 to 2008-Oct-10.31993)." Diameter approximately 0.079 km. from mean, weighted H=23.2.

2008 TP26	JPL Sentry	2128	2013-2103	98	2.9e-08	-6.19	-6.81	0	JPL: "Analysis based on 13 observations spanning .97919 days (2008-Oct-09.35087 to 2008-Oct-10.33006)." Diameter approximately 0.075 km. from mean, weighted H=23.3.

2008 TV25	NEODyS	1417	2014-2085	38	1.75e-08	-4.68	-5.10	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/10/09.435 to 2008/10/10.063."
2008 TV25	JPL Sentry	0518	2014-2085	22	1.2e-08	-4.86	-5.02	0	JPL: "Analysis based on 16 observations spanning .62868 days (2008-Oct-09.43394 to 2008-Oct-10.06262)." Diameter approximately 0.373 km. from mean, weighted H=19.8.

2008 TS10	NEODyS	1417	2068-2087	4	5.61e-06	-7.41	-7.82	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/10/08.362 to 2008/10/09.472."

2008 TR10	NEODyS	1417	2015-2066	12	6.87e-09	-5.72	-6.16	0	NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/10/08.361 to 2008/10/09.453."
2008 TR10	JPL Sentry	1416	2015-2079	29	1.8e-08	-5.38	-6.19	0	JPL: "Analysis based on 30 observations spanning 1.0917 days (2008-Oct-08.36066 to 2008-Oct-09.45239)." Diameter approximately 0.270 km. from mean, weighted H=20.5.

2008 TP10	NEODyS	1417	2010-2085	11	7.12e-10	-7.37	-7.66	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/10/08.336 to 2008/10/09.411."

2008 TZ3	NEODyS	1417	2010-2088	48	3.36e-07	-3.46	-3.56	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2008/10/06.333 to 2008/10/09.381."
2008 TZ3	JPL Sentry	1416	2010-2108	143	4.9e-07	-3.22	-3.28	0	JPL: "Analysis based on 21 observations spanning 3.0480 days (2008-Oct-06.33267 to 2008-Oct-09.38063)." Diameter approximately 0.302 km. from mean, weighted H=20.2.

2008 ST7	NEODyS	1417	2062-2089	15	1.6e-06	-5.54	-5.78	0	NEODyS: "Based on 103 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/09.399."
2008 ST7	JPL Sentry	1416	2073-2108	33	4.5e-05	-4.25	-4.61	0	JPL: "Analysis based on 97 observations spanning 15.098 days (2008-Sep-24.29993 to 2008-Oct-09.39801)." Diameter approximately 0.051 km. from mean, weighted H=24.1.

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 10 October '08

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

2231	Noted that JPL Sentry has posted 2008 TQ26 as an impact risk - see above Grabbed MPEC 2008-T120 - 2008 TT26 - see above
2200	Grabbed MPEC 2008-T119 - 2008 TS26 - see above
2128	Noted that JPL Sentry has posted 2008 TP26 as an impact risk - see above
2039	Grabbed MPEC 2008-T113 - 2008 TL26 - see above Grabbed MPEC 2008-T114 - 2008 TM26 - see above Grabbed MPEC 2008-T115 - 2008 TN26 - see above Grabbed MPEC 2008-T116 - 2008 TO26 - see above Grabbed MPEC 2008-T117 - 2008 TP26 - see above Grabbed MPEC 2008-T118 - 2008 TQ26 - see above
1417	Noted that NEODyS has updated its 2008 ST7 risk assessment - see above Noted that NEODyS has updated its 2008 TZ3 risk assessment - see above Grabbed MPEC 2008-T112 - Daily Orbit Update - see above
1416	Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above Noted that NEODyS has posted 2008 TP10 as an impact risk - see above Noted that JPL Sentry has updated its 2008 TR10 risk assessment - see above Noted that NEODyS has posted 2008 TR10 as an impact risk - see above Noted that NEODyS has posted 2008 TS10 as an impact risk - see above Noted that NEODyS has posted 2008 TV25 as an impact risk - see above Noted that JPL Sentry has updated its 2008 TZ3 risk assessment - see above
0518	Noted that JPL Sentry has posted 2008 TV25 as an impact risk - see above
0316	Grabbed MPEC 2008-T111 - 2008 TV25 - see above

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