2010-10-10 Tracking News

Possible ice spotted in new Mars crater. Credit: NASA/JPL/Univ. of Arizona.

The Mars Reconnaissance Orbiter (MRO) often spots small impact candidates that have formed since photo surveys began. One such site was reported last week. Another recently released HiRISE image is this of a fresh impact crater (new between April 2004 and January 2010) about six meters wide that appears to reveal shiny subsurface ice. See related images and info here and here. Credit: NASA/JPL/Univ. of Arizona.

Contents on 10 October '10

IAU Minor Planet Center
- NEOCP Activity -- twelve listings: 2 new, 10 updated
- New MPECs -- eleven MPECs
Observers -- 35 observing facilities
Impact Risk Monitoring -- six objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Of 347 risk-listed objects, 39 have had news in the last 31 days. Updated at 2308 UTC 10 Oct.
Earth's Busy Neighborhood Traffic Report
Three objects are known to be within ten LD today, including an intruder. Updated at 2338 UTC 10 Oct.
Ephemerides for risk-rated and nearby objects
News image catalog
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 '10

The MPC's NEO Confirmation Page has 12 listings: 2 new, 10 updated

When last checked at 2304 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and ten updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 23 listings on the NEOCP at some point today.

New MPECs on 10 October '10

Minor Planet Electronic Circulars

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

MPEC 2010-T61 time-stamped "04:09 UT" - 2010 TZ53 - see below
MPEC 2010-T62 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2010-T63 time-stamped "16:32 UT" - 2010 TB54 - see below
MPEC 2010-T64 time-stamped "16:38 UT" - 2010 TC54 - see below
MPEC 2010-T65 time-stamped "20:33 UT" - 2010 TD54 - see below
MPEC 2010-T66 time-stamped "21:53 UT" - 2010 TE54 - see below
MPEC 2010-T67 time-stamped "21:57 UT" - 2010 TF54 - see below
MPEC 2010-T68 time-stamped "22:03 UT" - 2010 TG54 - see below
MPEC 2010-T69 time-stamped "22:09 UT" - 2010 TH54 - see below
MPEC 2010-T70 time-stamped "22:13 UT" - 2010 TJ54 - see below
MPEC 2010-T71 time-stamped "22:42 UT" - 2007 TB23

MPEC 2010-T71 - "22:42 UT" - 2007 TB23

K07T23B 2007 TB23 (i=38.3°, Earth MOID=2.5 LD, H=18.7 ~616m) from Astronomical Research Obs. Westfield (Oct. 8.38-41p3 at V=21.8-22.1 & 10.41-42p3 at V=22.3-4)

MPEC 2010-T70 - "22:13 UT" - 2010 TJ54

K10T54J 2010 TJ54 (H=19.7 ~389m) was discovered at 1033 UT on 9 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 9.44-46p4. The discovery was confirmed by Libbiano Obs. (Oct. 9.89-90p3), Remanzacco Obs. (Oct. 9.97-98p2), Grasslands Obs. (Oct. 10.25-26p3), Rolando Ligustri via RAS Obs. Mayhill (Oct. 10.28p2), Sandlot Obs. (Oct. 10.35-36p4), Cordell-Lorenz Obs. (Oct. 10.37-39p2), ARO Westfield (Oct. 10.39-40p3), and Bisei Spaceguard Center (Oct. 10.79-80p3).

MPEC 2010-T69 - "22:09 UT" - 2010 TH54

K10T54H 2010 TH54 (small asteroid, H=23.8 ~59m) was discovered at 0952 UT on 9 Oct. by CSS, which observed it at Oct. 9.41-48p7. The discovery was confirmed by Bergen-Enkheim Obs. (Oct. 9.86-88p3), Starkenburg Obs. (Oct. 9.87p3), Guidestar Obs. (Oct. 9.88-90p3), Libbiano Obs. (Oct. 9.92-93p3), Remanzacco Obs. (Oct. 9.94p2), Farra d'Isonzo Obs. (Oct. 10.06-07p3), Grasslands Obs. (Oct. 10.20p3), Sandlot Obs. (Oct. 10.31-32p3), ARO Westfield (Oct. 10.32-33p3), and Bisei (Oct. 10.75p3).

MPEC 2010-T68 - "22:03 UT" - 2010 TG54

K10T54G 2010 TG54 (small asteroid, Earth MOID=4.3 LD, H=26.7 ~15m) was discovered at 0535 UT on 9 Oct. by the Mt. Lemmon Survey (MLS), which observed it at Oct. 9.23-25p4 and 9.32p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 9.30-32p4), ARO Westfield (Oct. 9.30-31p4), Sandlot Obs. (Oct. 9.31-32p3 & 10.22-23p3), Remanzacco Obs. (Oct. 9.92p2), Libbiano Obs. (Oct. 10.01-02p3), Grasslands Obs. (Oct. 10.19p3), Bisei (Oct. 10.61p4), and Starkenburg Obs. (Oct. 10.81-82p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 4.6 LD on 15 Oct.

MPEC 2010-T67 - "21:57 UT" - 2010 TF54

K10T54F 2010 TF54 (Q=5.633 AU, H=19.8 ~371m) was discovered at 0212 UT on 9 Oct. by LINEAR, which observed it at Oct. 9.09-15p5. The discovery was confirmed by Doc Greiner Research Obs. (DGRO) (Oct. 10.03p6), Sandlot Obs. (Oct. 10.06p3), the Spacewatch 1.8m telescope (Oct. 10.10p3), Tzec Maun Obs. Mayhill (Oct. 10.11-12p2), Grasslands Obs. (Oct. 10.13p3), ARO Westfield (Oct. 10.19p3), Bisei (Oct. 10.42-43p4), Inastars Obs. (Oct. 10.77p5), Hagen Obs. (Oct. 10.77-79p4), Bergen-Enkheim Obs. (Oct. 10.78-79p3), Farra d'Isonzo Obs. (Oct. 10.78-80p2), Great Shefford Obs. (Oct. 10.79-80p3), Starkenburg Obs. (Oct. 10.79-80p3), and Highworth Obs. (Oct. 10.80-85p4).

MPEC 2010-T66 - "21:53 UT" - 2010 TE54

K10T54E 2010 TE54 (small asteroid, Q=4.279 AU, H=22.1 ~129m) was discovered at 0911 UT on 7 Oct. by Pan-STARRS 1 (PS1), which observed it at Oct. 7.38-43p4 at w=21.8-22.2. The discovery was confirmed by Spacewatch 1.8m (Oct. 9.41-42p3 & 10.27p2) and ARO Westfield (Oct. 10.27-30p4).

MPEC 2010-T65 - "20:33 UT" - 2010 TD54

K10T54D 2010 TD54 (risk-listed, Earth MOID=0.1 LD, H=28.7 ~6m) was discovered at 0755 UT on 9 Oct. by MLS, which observed it at Oct. 9.33-39p8 at V=20.3-22.5. The discovery was confirmed by MRO (Oct. 9.38-40p4), Spacewatch 1.8m (Oct. 10.18-19p3 at V=21.4-22.1), ARO Westfield (Oct. 10.25-26p3), and Sandlot Obs. (Oct. 10.26-30p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 0.2 LD on 12 Oct. (INTRUDER).

MPEC 2010-T64 - "16:38 UT" - 2010 TC54

K10T54C 2010 TC54 (Q=4.182 AU, H=20.9 ~224m) was discovered at 0345 UT on 9 Oct. by LINEAR, which observed it at Oct. 9.16-21p5. The discovery was confirmed by Sandlot Obs. (Oct. 10.06-07p2), Spacewatch 1.8m (Oct. 10.11-12p3), Grasslands Obs. (Oct. 10.16p3), and ARO Westfield (Oct. 10.17-18p3).

MPEC 2010-T63 - "16:32 UT" - 2010 TB54

K10T54B 2010 TB54 (small asteroid, Earth MOID=4.4 LD, H=26.8 ~15m) was discovered at 0331 UT on 9 Oct. by MLS, which observed it at Oct. 9.15-20p7 and 10.08p5. The discovery was confirmed by ARO Westfield (Oct. 9.19-20p3), Sandlot Obs. (Oct. 9.19-20p3 & 10.19-20p4), and MRO (Oct. 9.20-23p4). This object will be coming within ten lunar distances (LD) of Earth, reaching 6.1 LD on 14 Oct.

<< DOU on 10 Oct. '10 >> MPEC 2010-T62 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K10T19G 2010 TG19 (small asteroid, arc=2 days, H=23.9 ~56m) from ARO Westfield (Oct. 9.06-08p3)
K10T00M 2010 TM (arc=7 days, H=19.4 ~446m) from Spacewatch 1.8m (Oct. 9.44-45p3)
K10T00D 2010 TD (small asteroid, arc=8 days, H=26.9 ~14m) from MRO (Oct. 9.31-37p4 at R=22.6-23.4)
K00T28U 2000 TU28 (arc=2 opp, H=20.9 ~224m) from CSS (Oct. 9.41-43p3 & 9.50-51p4)
Observations of recently (no longer) risk-listed objects
K10T05U 2010 TU5 (arc=6 days, H=18.9 ~562m) from MRO (Oct. 9.24-26p4) and ARO Westfield (Oct. 9.32-35p3)
K10T00K 2010 TK (small asteroid, arc=8 days, H=25.3 ~29m) from DGRO (Oct. 10.08-09p4)
K10S16S 2010 SS16 (small asteroid, Q=4.696 AU, arc=9 days, H=23.3 ~74m) from MLS (Oct. 9.14-16p4)
K10S15U 2010 SU15 (small asteroid, arc=9 days, H=26.1 ~20m) from Spacewatch 1.8m (Oct. 9.21-22p3)
K10S15H 2010 SH15 (small asteroid, arc=10 days, H=22.6 ~102m) from Spacewatch 1.8m (Oct. 9.34-35p3 at V=21.7-22.4)
K10RD0C 2010 RC130 (small asteroid, arc=24 days, H=22.2 ~123m) from Schiaparelli Obs. (Sept. 21.89-91p5) and Rio Cuarto Obs. (Oct. 9.31-33p5)
Observations of small asteroids (H>22.0)
K10T19S 2010 TS19 (Q=4.082 AU, arc=1 day, H=25.7 ~25m) from MRO (Oct. 9.28-32p4)
K10T19Q 2010 TQ19 (arc=2 days, H=25.3 ~29m) from ARO Westfield (Oct. 9.12-13p4), MRO (Oct. 9.23-25p3), and Alter Satzberg Obs. (Oct. 9.84-85p3)
K10T19K 2010 TK19 (arc=2 days, H=25.0 ~34m) from MRO (Oct. 9.24-26p4) and Walnut Creek Obs. (Oct. 9.25p3)
K10T03N 2010 TN3 (arc=7 days, H=22.4 ~112m) from ARO Westfield (Oct. 9.14-17p4)
K10S16T 2010 ST16 (Q=4.057 AU, arc=9 days, H=23.7 ~62m) from MLS (Oct. 9.23-25p4 at V=21.5-22.3) and Spacewatch 1.8m (Oct. 9.26-27p3 at V=22.1)
K10S15L 2010 SL15 (arc=10 days, H=25.2 ~31m) from PS1 (Oct. 6.44-48p4 at w=21.6-22.2) and Spacewatch 1.8m (Oct. 9.31-32p3)
K10S15K 2010 SK15 (arc=11 days, H=22.8 ~93m) from Schiaparelli Obs. (Oct. 6.05-06p5) and DGRO (Oct. 10.11-12p4)
K10S11X 2010 SX11 (arc=21 days, H=24.8 ~37m) from Schiaparelli Obs. (Oct. 6.02-04p3) and Kevin Hills via RAS Obs. Moorook (Oct. 9.55p2)
K10S00J 2010 SJ (arc=20 days, H=23.7 ~62m) from Schiaparelli Obs. (Sept. 21.96-97p3)
K10RD0B 2010 RB130 (arc=23 days, H=24.2 ~49m) from Schiaparelli Obs. (Sept. 21.99-00p3)
K10R80T 2010 RT80 (arc=25 days, H=23.0 ~85m) from PS1 (Oct. 6.36-41p4)
K10R42L 2010 RL42 (arc=34 days, H=22.6 ~102m) from Desert Moon Obs. (Oct. 9.26p1, 9.32p1 & 9.36p1)
K10R30T 2010 RT30 (arc=35 days, H=23.3 ~74m) from Spacewatch 1.8m (Oct. 9.28-29p3)
K10R03S 2010 RS3 (arc=37 days, H=22.6 ~102m) from ARO Westfield (Oct. 9.21-23p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10R12C 2010 RC12 (arc=36 days, H=21.8 ~148m) from ARO Westfield (Oct. 9.24-25p3)
Observations of other objects
K10T19H 2010 TH19 (arc=3 days, H=20.3 ~295m) from Alter Satzberg Obs. (Oct. 9.75-81p5)
K10T07J 2010 TJ7 (arc=5 days, H=19.7 ~389m) from DGRO (Oct. 10.19-20p3)
K10T03M 2010 TM3 (arc=7 days, H=20.5 ~269m) from ARO Westfield (Oct. 9.40-42p4) and CSS (Oct. 9.44-45p3)
K10T00L 2010 TL from PS1 (Oct. 6.43-47p8) and Spacewatch 1.8m (Oct. 9.27-28p3)
K10S13L 2010 SL13 (arc=20 days, H=19.3 ~467m) from MLS (Oct. 9.20-23p4)
K10S03S 2010 SS3 (arc=23 days, H=20.9 ~224m) from Spacewatch 1.8m (Oct. 9.30-31p3)
K10RH9R 2010 RR179 (Q=4.254 AU, arc=37 days, H=20.9 ~224m) from Desert Moon Obs. (Oct. 9.08-16p3)
K10RE7A 2010 RA147 (arc=25 days, H=19.5 ~426m) from LINEAR (Oct. 9.29-34p5) and the Spacewatch 0.9m telescope (Oct. 9.32-36p3)
K10R80N 2010 RN80 (arc=29 days, H=20.1 ~323m) from Schiaparelli Obs. (Sept. 21.87-89p5)
K10R42M 2010 RM42 (i=39.0°, arc=34 days, H=18.6 ~645m) from CSS (Oct. 9.35-38p4)
K10P10M 2010 PM10 (arc=64 days, H=19.7 ~389m) from LINEAR (Oct. 9.29-35p5) and CSS (Oct. 9.35-38p4)
K10NB7W 2010 NW117 (arc=93 days, H=18.0 ~851m) from LINEAR (Oct. 9.09-15p5)
K10M87R 2010 MR87 (arc=107 days, H=19.5 ~426m) from Schiaparelli Obs. (Sept. 21.93-95p5)
K10L63Y 2010 LY63 (arc=4 opp, H=17.9 ~891m) from Siegen Obs. (Oct. 8.88-89p5)
K08CB8Z 2008 CZ118 (arc=3 opp, H=18.4 ~708m) from MLS (Oct. 9.34-35p3)
K07T18Y 2007 TY18 (arc=3 opp, H=18.3 ~741m) from MLS (Oct. 9.14-16p4)
K07R17U 2007 RU17 (q=0.351 AU, arc=2 opp, H=18.1 ~812m) from LINEAR (Oct. 9.29-34p5) and Spacewatch 0.9m (Oct. 9.37-41p3)
K06W01T 2006 WT1 (arc=2 opp, H=20.0 ~339m) from Spacewatch 1.8m (Oct. 9.46-47p3)
K06Q00S 2006 QS (arc=2 opp, H=20.0 ~339m) from MLS (Oct. 9.11-13p4 at V=20.9-22.1)
K05V07B 2005 VB7 (arc=3 opp, H=19.5 ~426m) from Spacewatch 1.8m (Oct. 9.49-50p3)
K05T15B 2005 TB15 (arc=2 opp, H=19.2 ~490m) from LINEAR (Oct. 9.29-35p5)
K05EM4E 2005 EE224 (arc=3 opp, H=19.8 ~371m) from Spacewatch 1.8m (Oct. 9.24-25p3)
K03U11V 2003 UV11 (q=0.344 AU, arc=4 opp, H=19.3 ~467m) from Schiaparelli Obs. (Oct. 6.14p2), program code "=" via RAS Obs. Mayhill (Oct. 8.29p1 & 8.33p1), and Siegen Obs. (Oct. 8.99-02p3)
K02T70C 2002 TC70 (arc=4 opp, H=21.0 ~214m) from Schiaparelli Obs. (Oct. 6.00-01p2 & 6.09-10p2)
K02D03Y 2002 DY3 (arc=4 opp, H=18.4 ~708m) from Herrenberg Obs. (Oct. 9.84-85p5)
K00T01J 2000 TJ1 (i=39.5°, arc=3 opp, H=19.6 ~407m) from Schiaparelli Obs. (Sept. 22.02-04p3)
J99X35R 1999 XR35 (arc=4 opp, H=17.9 ~891m) from Desert Moon Obs. (Oct. 9.42-49p3)
P0706 250706 2005 RR6 from LINEAR (Oct. 9.42-48p5)
P0697 250697 2005 QY151 from Taurus-1 Obs. (Oct. 9.10-11p5)
P0620 250620 2005 GE59 from Schiaparelli Obs. (Sept. 22.05-06p3)
O9595 249595 1997 GH28 from LINEAR (Oct. 9.23-28p5)
O3147 243147 2007 TX18 from CSS (Oct. 9.27-29p4)
L9071 219071 1997 US9 from LINEAR (Oct. 9.42-48p5)
J9145 199145 2005 YY128 from CSS (Oct. 9.39-41p4)
H0891 170891 2004 TY16 from MLS (Oct. 9.47-49p4)
F2952 152952 2000 GC2 from Herrenberg Obs. (Oct. 9.75-77p5)
D8847 138847 2000 VE62 from Herrenberg Obs. (Oct. 9.79p3)
88959 88959 2001 TZ44 from CSS (Oct. 9.44-46p4)
52768 52768 1998 OR2 from Spacewatch 0.9m (Oct. 9.19-24p3)
23187 23187 2000 PN9 from LINEAR (Oct. 9.08-14p5)
21374 21374 1997 WS22 from Spacewatch 0.9m (Oct. 9.44-47p3)
11885 11885 Summanus (1990 SS) from LINEAR (Oct. 9.22-28p5)
05143 5143 Heracles (1991 VL) from ISON-NM Obs. (Oct. 9.10-18p4)
04183 4183 Cuno (1959 LM) from LINEAR (Oct. 9.16-21p5)
02201 2201 Oljato (1947 XC) from MLS (Oct. 9.20-22p4)
01221 1221 Amor (1932 EA1) from MLS (Oct. 9.33-35p4)

MPEC 2010-T61 - "04:09 UT" - 2010 TZ53

K10T53Z 2010 TZ53 (small asteroid, H=23.2 ~78m) was discovered at 0610 UT on 8 Oct. by LINEAR, which observed it at Oct. 8.26-28p3 and 9.29-34p5. The discovery was confirmed by Libbiano Obs. (Oct. 10.00-01p3), Farra d'Isonzo Obs. (Oct. 10.01-03p2), and DGRO (Oct. 10.10-11p3).

Observers on 10 October '10

A total of 35 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 2 in MPEC 2010-T62 -- 2010 TQ19, 2010 TH19
`H21`	Astronomical Research Obs. Westfield in Illinois, 16 in MPECs 2010-T62, 2010-T63, 2010-T64, 2010-T65, 2010-T66, 2010-T67, 2010-T68, 2010-T69, 2010-T70 & 2010-T71 -- 2010 TU5, 2010 TQ19, 2010 TN3, 2010 TM3, 2010 TJ54, 2010 TH54, 2010 TG54, 2010 TG19, 2010 TF54, 2010 TE54, 2010 TD54, 2010 TC54, 2010 TB54, 2010 RS3, 2010 RC12, 2007 TB23
`A74`	Bergen-Enkheim Obs. in Germany, 2 in MPECs 2010-T67 & 2010-T69 -- 2010 TH54, 2010 TF54
`300`	Bisei Spaceguard Center in Japan, 4 in MPECs 2010-T67, 2010-T68, 2010-T69 & 2010-T70 -- 2010 TJ54, 2010 TH54, 2010 TG54, 2010 TF54
`703`	Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2010-T62, 2010-T69 & 2010-T70 -- 2010 TM3, 2010 TJ54, 2010 TH54, 2010 RM42, 2010 PM10, 2000 TU28, 88959, 243147, 199145
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-T70 -- 2010 TJ54
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2010-T62 -- 2010 RR179, 2010 RL42, 1999 XR35
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 5 in MPECs 2010-T61, 2010-T62 & 2010-T67 -- 2010 TZ53, 2010 TK, 2010 TJ7, 2010 TF54, 2010 SK15
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPECs 2010-T61, 2010-T67 & 2010-T69 -- 2010 TZ53, 2010 TH54, 2010 TF54
`651`	Grasslands Obs. in Arizona, 5 in MPECs 2010-T64, 2010-T67, 2010-T68, 2010-T69 & 2010-T70 -- 2010 TJ54, 2010 TH54, 2010 TG54, 2010 TF54, 2010 TC54
`J95`	Great Shefford Obs. in England, 1 in MPEC 2010-T67 -- 2010 TF54
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2010-T69 -- 2010 TH54
`B86`	Hagen Obs. in Germany, 1 in MPEC 2010-T67 -- 2010 TF54
`240`	Herrenberg Obs. in Germany, 3 in MPEC 2010-T62 -- 2002 DY3, 152952, 138847
`951`	Highworth Obs. in England, 1 in MPEC 2010-T67 -- 2010 TF54
`H15`	ISON-NM Obs. in New Mexico, 1 in MPEC 2010-T62 -- 5143
`B15`	Inastars Obs. in Germany, 1 in MPEC 2010-T67 -- 2010 TF54
`704`	LINEAR in New Mexico, 14 in MPECs 2010-T61, 2010-T62, 2010-T64 & 2010-T67 -- 2010 TZ53, 2010 TF54, 2010 TC54, 2010 RA147, 2010 PM10, 2010 NW117, 2007 RU17, 2005 TB15, 250706, 249595, 23187, 219071, 11885, 4183
`B33`	Libbiano Obs. in Italy, 4 in MPECs 2010-T61, 2010-T68, 2010-T69 & 2010-T70 -- 2010 TZ53, 2010 TJ54, 2010 TH54, 2010 TG54
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2010-T62, 2010-T63, 2010-T65 & 2010-T68 -- 2010 TU5, 2010 TS19, 2010 TQ19, 2010 TK19, 2010 TG54, 2010 TD54, 2010 TD, 2010 TB54
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2010-T62, 2010-T63, 2010-T65 & 2010-T68 -- 2010 TG54, 2010 TD54, 2010 TB54, 2010 ST16, 2010 SS16, 2010 SL13, 2008 CZ118, 2007 TY18, 2006 QS, 170891, 2201, 1221
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2010-T62 & 2010-T66 -- 2010 TL, 2010 TE54, 2010 SL15, 2010 RT80
`H06*`	Rolando Ligustri in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-T70 -- 2010 TJ54
`H06=`	program code "=" via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-T62 -- 2003 UV11
D90`	Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-T62 -- 2010 SX11
`473`	Remanzacco Obs. in Italy, 3 in MPECs 2010-T68, 2010-T69 & 2010-T70 -- 2010 TJ54, 2010 TH54, 2010 TG54
`I20`	Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-T62 -- 2010 RC130
`H36`	Sandlot Obs. in Kansas, 7 in MPECs 2010-T63, 2010-T64, 2010-T65, 2010-T67, 2010-T68, 2010-T69 & 2010-T70 -- 2010 TJ54, 2010 TH54, 2010 TG54, 2010 TF54, 2010 TD54, 2010 TC54, 2010 TB54
`204`	Schiaparelli Obs. in Italy, 11 in MPEC 2010-T62 -- 2010 SX11, 2010 SK15, 2010 SJ, 2010 RN80, 2010 RC130, 2010 RB130, 2010 MR87, 2003 UV11, 2002 TC70, 2000 TJ1, 250620
`510`	Siegen Obs. in Germany, 2 in MPEC 2010-T62 -- 2010 LY63, 2003 UV11
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2010-T62 -- 2010 RA147, 2007 RU17, 52768, 21374
`291`	Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2010-T62, 2010-T64, 2010-T65, 2010-T66 & 2010-T67 -- 2010 TM, 2010 TL, 2010 TF54, 2010 TE54, 2010 TD54, 2010 TC54, 2010 SU15, 2010 ST16, 2010 SS3, 2010 SL15, 2010 SH15, 2010 RT30, 2006 WT1, 2005 VB7, 2005 EE224
`611`	Starkenburg Obs. in Germany, 3 in MPECs 2010-T67, 2010-T68 & 2010-T69 -- 2010 TH54, 2010 TG54, 2010 TF54
`A98`	Taurus-1 Obs. in Belarus, 1 in MPEC 2010-T62 -- 250697
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-T67 -- 2010 TF54
`G56`	Walnut Creek Obs. in northern California, 1 in MPEC 2010-T62 -- 2010 TK19

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

Impact Risk Monitoring on 10 October '10

**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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
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

2010 TD54	JPL Sentry	2304	2013-2035	2	1.2e-06	-6.35	-6.35	0	JPL: "Analysis based on 21 observations spanning .96505 days (2010-Oct-09.33035 to 2010-Oct-10.2954)." Diameter approximately 0.006 km. from mean, weighted H=28.8.

2010 TG19	NEODyS	1508	R E M O V E D						-

2010 TM	JPL Sentry	1508	2025-2110	50	1.3e-06	-2.92	-3.43	0	JPL: "Analysis based on 29 observations spanning 6.9984 days (2010-Oct-02.44882 to 2010-Oct-09.44724)." Diameter approximately 0.499 km. from mean, weighted H=19.2.
2010 TM	NEODyS	1508	2025-2083	9	5.37e-07	-3.22	-3.52	0	NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2010/10/02.450 to 2010/10/09.448."

2010 TD	JPL Sentry	1508	2072-2091	5	2.3e-06	-6.45	-6.80	0	JPL: "Analysis based on 34 observations spanning 8.1633 days (2010-Oct-01.20604 to 2010-Oct-09.36932)." Diameter approximately 0.014 km. from mean, weighted H=26.9.
2010 TD	NEODyS	1508	2072-2085	6	2.2e-06	-6.47	-6.82	0	NEODyS: "Based on 36 optical observations (of which 2 are rejected as outliers) from 2010/10/01.207 to 2010/10/09.370."

2010 GM23	NEODyS	0600	2087-2090	2	4.49e-07	-6.32	-6.32	0	NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2010/04/08.312 to 2010/04/13.096."

2000 TU28	JPL Sentry	1508	R E M O V E D						JPL: Risk listing removed at 1012 UTC.

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 '10

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

2304	Noted that JPL Sentry has posted 2010 TD54 as an impact risk - see above Grabbed MPEC 2010-T71 - 2007 TB23 - see above
2218	Grabbed MPEC 2010-T70 - 2010 TJ54 - see above
2215	Grabbed MPEC 2010-T66 - 2010 TE54 - see above Grabbed MPEC 2010-T67 - 2010 TF54 - see above Grabbed MPEC 2010-T68 - 2010 TG54 - see above Grabbed MPEC 2010-T69 - 2010 TH54 - see above
2135	Grabbed MPEC 2010-T65 - 2010 TD54 - see above
1707	Grabbed MPEC 2010-T64 - 2010 TC54 - see above
1638	Grabbed MPEC 2010-T63 - 2010 TB54 - see above
1508	Noted that JPL Sentry has removed 2000 TU28 as an impact risk - see above Noted that JPL Sentry has updated its 2010 TD risk assessment - see above Noted that NEODyS has updated its 2010 TD risk assessment - see above Noted that NEODyS has removed 2010 TG19 as an impact risk - see above Noted that JPL Sentry has updated its 2010 TM risk assessment - see above Noted that NEODyS has updated its 2010 TM risk assessment - see above Grabbed MPEC 2010-T62 - Daily Orbit Update - see above
0600	Noted that NEODyS has updated its 2010 GM23 risk assessment - see above
0432	Grabbed MPEC 2010-T61 - 2010 TZ53 - see above

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