2009-10-20 Tracking News

Contents on 20 October '09

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- three listings: 3 new
- New MPECs -- five MPECs
Observers -- 33 observing facilities
Impact Risk Monitoring -- eleven objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
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.

Radar Astrometry on 20 October '09

Radar observation of one object

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

Data update noted at 1909 UTC when the database was dated 20 Oct.

152664 1998 FW4 from Goldstone DSS-14 70m antenna (Sept. 27.18 range) and Arecibo (Sept. 30.81 range & Oct. 1.76 range) - see links

NEOCP Activity on 20 October '09

The MPC's NEO Confirmation Page has 3 listings: 3 new

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new listings. All of these were "one nighters." So far The Tracking News has counted a total of six listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 20 October '09

Minor Planet Electronic Circulars

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

MPEC 2009-U50 time-stamped "06:11 UT" - Daily Orbit Update - see below
MPEC 2009-U51 time-stamped "15:10 UT" - 2009 UM3 - see below
MPEC 2009-U52 time-stamped "15:26 UT" - 2009 UN3 - see below
MPEC 2009-U53 time-stamped "15:55 UT" - 2009 UO3 - see below
MPEC 2009-U54 time-stamped "21:21 UT" - Comet P/2009 S1 (Gibbs)

MPEC 2009-U54 - "21:21 UT" - Comet P/2009 S1 (Gibbs)

PK09S010 P/2009 S1 (Gibbs) from Moriyama Obs. (Oct. 15.66-67p2), Kiev Comet Station (Oct. 15.99-00p2), Petit Jean Mtn. South Obs. (PJMSO) (Oct. 20.31-32p5), and Grove Creek Obs. (Oct. 20.72-73p2)

MPEC 2009-U53 - "15:55 UT" - 2009 UO3

K09U03O 2009 UO3 was discovered at 0253 UT on 20 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 20.12-14p3 and 20.18-19p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 20.17-19p5), Sandlot Obs. (Oct. 20.19p4), Sabino Canyon Obs. (Oct. 20.33p5), Moriyama Obs. (Oct. 20.51p4), and Shenton Park Obs. (Oct. 20.52p2).

MPEC 2009-U52 - "15:26 UT" - 2009 UN3

K09U03N 2009 UN3 (risk-listed) was discovered at 1421 UT on 19 Oct. by the Siding Spring Survey (SSS), which observed it at Oct. 19.60-61p2, 19.69p1, 19.74-76p3, and 20.51-52p2.

MPEC 2009-U51 - "15:10 UT" - 2009 UM3

K09U03M 2009 UM3 was discovered at 0838 UT on 19 Oct. by LINEAR, which observed it at Oct. 19.36-41p5. The discovery was confirmed by Libbiano Obs. (Oct. 19.98p3), Engelhardt Obs. Zelenchukskaya Station (Oct. 20.02-03p4), Los Molinos Obs. (Oct. 20.21-23p7), Sabino Canyon Obs. (Oct. 20.36-37p3), and MRO (Oct. 20.38-40p4).

<< DOU on 20 Oct. '09 >> MPEC 2009-U50 - "06:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K09U02F 2009 UF2 (small asteroid, arc=1 day, H=24.1 ~51m) from the Spacewatch 1.8m telescope (Oct. 20.17p1 at V=23)
K09U02D 2009 UD2 (small asteroid, arc=2 days, H=22.1 ~129m) from Astronomical Research Obs. (ARO) (Oct. 19.19-21p3) and Spacewatch 1.8m (Oct. 20.13-14p3)
K09T10E 2009 TE10 (i=44.7°, arc=5 days, H=18.7 ~616m) from ARO (Oct. 19.05-07p5) and Spacewatch 1.8m (Oct. 20.10-11p2)
K09T08Q 2009 TQ8 (small asteroid, arc=5 days, H=24.3 ~47m) from ARO (Oct. 19.23p3) and Bergen-Enkheim Obs. (Oct. 19.86-89p3)
K09T08O 2009 TO8 (small asteroid, arc=4 days, H=26.1 ~20m) from ARO (Oct. 19.33-34p3) and Tenagra II Obs. (Oct. 19.46-47p3)
K09T08C 2009 TC8 (arc=5 days, H=18.7 ~616m) from Spacewatch 1.8m (Oct. 19.18-19p3 at V=21.9-22.1)
K09T07S 2009 TS7 (small asteroid, arc=5 days, H=22.8 ~93m) from Spacewatch 1.8m (Oct. 19.35p2 at V=23)
Observations of recently (no longer) risk-listed objects
K09U00K 2009 UK (arc=3 days, H=20.0 ~339m) from Spacewatch 1.8m (Oct. 19.21-22p3) and ARO (Oct. 19.24-25p3)
K09U00D 2009 UD (small asteroid, arc=3 days, H=27.3 ~12m) from ARO (Oct. 18.32p5 & 19.28-30p7)
K09T08G 2009 TG8 (arc=5 days, H=18.8 ~589m) from Spacewatch 1.8m (Oct. 19.42-43p3) and Tenagra II Obs. (Oct. 19.49p3)
K09T00T 2009 TT (small asteroid, arc=8 days, H=25.1 ~32m) from ARO (Oct. 18.43p3)
K09SM9C 2009 SC229 (arc=20 days, H=19.2 ~490m) from ARO (Oct. 18.35-36p4) and PJMSO (Oct. 19.34-35p6)
K09SA4U 2009 SU104 (small asteroid, Q=4.298 AU, arc=5 days, H=25.6 ~26m) from ARO (Oct. 1.04p1)
K09S19W 2009 SW19 (i=62.9°, arc=27 days, H=19.8 ~371m) from Spacewatch 1.8m (Oct. 20.19-20p3)
K09S18G 2009 SG18 (i=58.5°, Q=5.043 AU, arc=28 days, H=17.9 ~891m) from ARO (Oct. 19.03-04p2)
K09S17V 2009 SV17 (Q=4.288 AU, arc=30 days, H=19.6 ~407m) from Spacewatch 1.8m (Oct. 19.12-13p3 & 20.14-15p3)
K09S02G 2009 SG2 (arc=31 days, H=20.0 ~339m) from PJMSO (Oct. 19.23-24p6) and Verona Obs. (Oct. 19.85-86p3)
K09S00B 2009 SB (arc=33 days, H=20.5 ~269m) from ARO (Sept. 19.13-16p3 at V=21.8-22.2) and Spacewatch 1.8m (Oct. 19.09p2)
Observations of small asteroids (H>22.0)
K09U00J 2009 UJ (Q=4.309 AU, arc=3 days, H=26.1 ~20m) from Libbiano Obs. (Oct. 16.90-91p4) and ARO (Oct. 19.25-26p3)
K09U00G 2009 UG (arc=3 days, H=23.2 ~78m) from ARO (Oct. 18.22-23p5 & 19.26-27p4)
K09U00F 2009 UF (arc=2 days, H=22.6 ~102m) from ARO (Oct. 18.26p3)
K09U00C 2009 UC (arc=3 days, H=26.6 ~16m) from ARO (Oct. 19.12-13p3)
K09T10F 2009 TF10 (arc=3 days, H=22.2 ~123m) from ARO (Oct. 18.18p3)
K09T08N 2009 TN8 (arc=3 days, H=24.2 ~49m) from ARO (Oct. 18.19p5)
K09T08F 2009 TF8 (arc=5 days, H=26.5 ~17m) from ARO (Oct. 18.39-42p5) and Tenagra II Obs. (Oct. 19.48p2)
K09T04J 2009 TJ4 (arc=4 days, H=26.1 ~20m) from ARO (Oct. 18.34p3)
K09T00P 2009 TP (arc=11 days, H=23.6 ~65m) from ARO (Oct. 19.02-03p3)
K09SH2S 2009 SS172 (arc=20 days, H=23.4 ~71m) from Spacewatch 1.8m (Oct. 19.37-38p3 at V=22.4-5)
K09SH1W 2009 SW171 (arc=16 days, H=26.1 ~20m) from ARO (Oct. 1.23-25p3)
K09S02J 2009 SJ2 (arc=1 day, H=23.7 ~62m) from ARO (Sept. 19.21-23p3 at V=21.5-22.1)
K09S00W 2009 SW (arc=32 days, H=22.2 ~123m) from LINEAR (Oct. 19.22-28p5)
K09R01T 2009 RT1 (arc=26 days, H=23.6 ~65m) from ARO (Sept. 13.10p1)
K09Q32L 2009 QL32 (arc=21 days, H=24.6 ~41m) from ARO (Sept. 12.17-20p3 at V=22.4-8)
K09Q00T 2009 QT (arc=26 days, H=23.4 ~71m) from ARO (Sept. 11.11-14p2 at V=21.7-22.1)
Observations of almost-small asteroids (21.7<H<=22.0)
K09U00Q 2009 UQ (arc=3 days, H=21.8 ~148m) from ARO (Oct. 19.15p3), Eschenberg Obs. (Oct. 19.74-75p3), Madonna di Dossobuono Obs. (Oct. 19.85p3), and Verona Obs. (Oct. 19.87-89p4)
K09R01V 2009 RV1 (Q=4.422 AU, arc=37 days, H=21.9 ~141m) from Spacewatch 1.8m (Oct. 19.47p2)
K09Q08R 2009 QR8 (arc=57 days, H=21.8 ~148m) from ARO (Sept. 11.30-31p3)
K09Q00S 2009 QS (arc=30 days, H=22.0 ~135m) from ARO (Sept. 13.08-10p3)
Observations of other objects
K09U02W 2009 UW2 (arc=30 days, H=20.0 ~339m) from SSS (Oct. 19.53p2)
K09U01P 2009 UP1 (arc=1 day, H=20.3 ~295m) from ARO (Oct. 19.00-01p3)
K09T12K 2009 TK12 (arc=5 days, H=20.3 ~295m) from PJMSO (Oct. 19.30-33p6) and Eschenberg Obs. (Oct. 19.79-80p7)
K09T10M 2009 TM10 (arc=31 days, H=19.4 ~446m) from LINEAR (Oct. 19.23-28p4)
K09T08K 2009 TK8 (arc=5 days, H=20.1 ~323m) from ARO (Oct. 18.36-37p5), Betelgeuse Station (Oct. 18.99p1), and Mirasteilas Obs. (Oct. 19.85-86p2)
K09T01A 2009 TA1 (arc=19 days, H=20.1 ~323m) from La Sagra Obs. (Oct. 18.02-05p3)
K09SH1V 2009 SV171 (Q=4.185 AU, arc=20 days, H=19.6 ~407m) from ARO (Oct. 18.37-38p5)
K09SA4S 2009 SS104 (arc=23 days, H=21.0 ~214m) from ARO (Oct. 19.30-31p3)
K09SA3M 2009 SM103 (Q=4.418 AU, arc=25 days, H=16.9 ~1.41 km) from Betelgeuse Sta. (Oct. 18.85p1 & 19.82p1), ARO (Oct. 19.09-10p5), CSS (Oct. 19.13-14p3), PJMSO (Oct. 19.22-23p6), Hamamatsu-Yuto Obs. (Oct. 19.51-55p5), and Eschenberg Obs. (Oct. 19.73p3)
K09S19T 2009 ST19 (arc=34 days, H=18.3 ~741m) from Betelgeuse Sta. (Oct. 18.98p1) and Hamamatsu-Yuto Obs. (Oct. 19.75-78p10)
K09S00T 2009 ST (arc=2 opp, H=19.6 ~407m) from the Mt. Lemmon Survey (MLS) (Oct. 15.21-22p4)
K09S00Q 2009 SQ (q=0.369 AU, Q=5.044 AU, arc=59 days, H=19.0 ~537m) from ARO (Sept. 19.07-08p2)
K09S00M 2009 SM (arc=33 days, H=19.4 ~446m) from La Sagra Obs. (Oct. 17.86-89p3) and ARO (Oct. 19.27-28p3)
K09S00G 2009 SG (i=39.8°, arc=33 days, H=19.6 ~407m) from ARO (Sept. 18.32-34p2) and Madonna di Dossobuono Obs. (Oct. 19.82p3)
K09R04B 2009 RB4 (arc=33 days, H=18.2 ~776m) from MLS (Oct. 17.23-25p4)
K09R01D 2009 RD1 (arc=34 days, H=20.5 ~269m) from ARO (Sept. 13.11-12p3 & 19.10-11p2)
K09R00N 2009 RN (Q=4.584 AU, arc=39 days, H=19.9 ~355m) from ARO (Oct. 18.38-39p6 & 19.31-32p6) and Hamamatsu-Yuto Obs. (Oct. 19.67-68p4)
K09R00M 2009 RM (Q=4.329 AU, arc=39 days, H=18.4 ~708m) from ARO (Sept. 13.06-07p3) and Mirasteilas Obs. (Oct. 19.75-77p3)
K09Q35B 2009 QB35 (arc=51 days, H=19.9 ~355m) from ARO (Oct. 18.44p3)
K09Q34G 2009 QG34 (Q=4.545 AU, arc=52 days, H=19.5 ~426m) from CSS (Oct. 18.35-37p3)
K09Q34D 2009 QD34 (arc=53 days, H=18.0 ~851m) from ARO (Oct. 18.44-46p3)
K09Q31F 2009 QF31 (i=42.4°, arc=54 days, H=18.3 ~741m) from ARO (Sept. 13.07-08p3 & Oct. 19.08-09p3)
K09Q08L 2009 QL8 (arc=55 days, H=19.4 ~446m) from ARO (Sept. 12.29-30p6)
K09Q02H 2009 QH2 (arc=61 days, H=21.2 ~195m) from La Sagra Obs. (Oct. 17.82-85p3)
K09O00C 2009 OC (arc=2 opp, H=20.3 ~295m) from LINEAR (Oct. 19.22-27p5)
K09N00H 2009 NH (arc=100 days, H=18.8 ~589m) from ARO (Oct. 19.32-33p3)
K09N00A 2009 NA (Q=4.129 AU, arc=110 days, H=17.5 ~1.07 km) from Betelgeuse Sta. (Oct. 18.97p1)
K09M09C 2009 MC9 (arc=111 days, H=18.1 ~812m) from Madonna di Dossobuono Obs. (Oct. 19.86-87p3)
K09M01L 2009 ML1 (arc=117 days, H=19.5 ~426m) from CSS (Oct. 16.36-37p2)
K09K03C 2009 KC3 (Q=5.447 AU, arc=168 days, H=18.0 ~851m) from Bornheim Obs. (Sept. 17.89-90p4, 22.92-94p4 & 27.81-84p4), Betelgeuse Sta. (Oct. 18.93p1), and Hamamatsu-Yuto Obs. (Oct. 19.56-60p11)
K09H44V 2009 HV44 (i=38.0°, arc=180 days, H=18.9 ~562m) from PJMSO (Oct. 19.35-36p6)
K08J00O 2008 JO (arc=2 opp, H=18.3 ~741m) from LINEAR (Oct. 19.09-15p4)
K06A04O 2006 AO4 (Q=4.162 AU, arc=4 opp, H=15.5 ~2.69 km, q=1.098 AU) from CSS (Oct. 16.47-49p4)
K05X80L 2005 XL80 (arc=3 opp, H=18.1 ~812m) from ARO (Sept. 11.30-33p3 at V=21.9-22.1)
K05S19G 2005 SG19 (Q=4.170 AU, arc=2 opp, H=16.6 ~1.62 km) from CSS (Oct. 19.15-18p4)
K05R06Q 2005 RQ6 (arc=2 opp, H=18.8 ~589m) from LINEAR (Oct. 19.29-34p5) and Hamamatsu-Yuto Obs. (Oct. 19.64-67p11)
K04Y32R 2004 YR32 (Q=5.206 AU, arc=2 opp, H=17.6 ~1.02 km) from Spacewatch 1.8m (Oct. 19.39-41p3 at V=22.8)
K04X35M 2004 XM35 (arc=2 opp, H=19.8 ~371m) from CSS (Oct. 16.44-46p4)
K03U12L 2003 UL12 (Q=5.602 AU, arc=3 opp, H=17.3 ~1.17 km) from LINEAR (Oct. 19.42-46p4)
K03U10B 2003 UB10 (arc=5 opp, H=18.3 ~741m) from CSS (Oct. 16.26-29p4)
K03K18N 2003 KN18 (arc=4 opp, H=18.7 ~616m) from Spacewatch 1.8m (Oct. 19.49-50p2)
K02N01P 2002 NP1 (arc=3 opp, H=17.6 ~1.02 km) from Bornheim Obs. (Aug. 22.89-91p3 & 23.88-89p5)
K00A06D 2000 AD6 (arc=4 opp, H=18.4 ~708m) from Spacewatch 1.8m (Oct. 19.50-51p3)
J98M24R 1998 MR24 (arc=3 opp, H=19.2 ~490m) from CSS (Oct. 16.35-38p3)
J96E00O 1996 EO (arc=4 opp, H=19.2 ~490m) from Spacewatch 1.8m (Oct. 20.09p3)
M0909 220909 2005 EO1 from La Sagra Obs. (Oct. 17.82-85p3)
L8863 218863 2006 WO127 from CSS (Oct. 15.28-31p4) and LINEAR (Oct. 19.28-34p5)
I5716 185716 1998 SF35 from Herrenberg Obs. (Oct. 19.84-85p4)
G3697 163697 2003 EF54 from Bornheim Obs. (Aug. 22.86-87p3 & 23.86-87p4)
F9402 159402 1999 AP10 from Madonna di Dossobuono Obs. (Oct. 19.80-81p3)
F4244 154244 2002 KL6 from La Sagra Obs. (Oct. 17.98-00p3) and Mirasteilas Obs. (Oct. 19.82-83p3)
F2664 152664 1998 FW4 from ARO (Sept. 11.22-25p6)
E3678 143678 2003 SA224 from CSS (Oct. 16.30-32p4)
D8883 138883 2000 YL29 from Bornheim Obs. (Aug. 31.91-92p4)
D7805 137805 1999 YK5 from CSS (Oct. 16.48-49p3)
D6617 136617 1994 CC from CSS (Oct. 16.34-37p4)
85709 85709 1998 SG36 from LINEAR (Oct. 19.37-41p4)
85628 85628 1998 KV2 from CSS (Oct. 14.46-47p4)
54660 54660 2000 UJ1 from Guidestar Obs. (Oct. 19.83-85p3)
54401 54401 2000 LM from CSS (Oct. 15.14-15p4) and Herrenberg Obs. (Oct. 19.77-79p5)
38091 38091 1999 JT3 from La Sagra Obs. (Oct. 18.99-02p3)
20826 20826 2000 UV13 from CSS (Oct. 19.16-18p4)
17274 17274 2000 LC16 from Bornheim Obs. (Sept. 7.82-84p5, 8.82-84p5 & 17.80-82p4) and CSS (Oct. 15.21-23p4)
16834 16834 1997 WU22 from Bornheim Obs. (Aug. 31.88-91p3, Sept. 17.85-87p3 & 22.90-92p4) and CSS (Oct. 15.16-18p4)
16816 16816 1997 UF9 from La Sagra Obs. (Oct. 18.91-94p3)
09202 9202 1993 PB from Inastars Obs. (Oct. 19.72p4)
06239 6239 Minos (1989 QF) from Mirasteilas Obs. (Oct. 19.86-87p2)
03288 3288 Seleucus (1982 DV) from La Sagra Obs. (Oct. 17.90-93p3) and Mirasteilas Obs. (Oct. 19.79-80p3)
03200 3200 Phaethon (1983 TB) from Betelgeuse Sta. (Oct. 18.96p1) and Hamamatsu-Yuto Obs. (Oct. 19.47-49p6)
01943 1943 Anteros (1973 EC) from Bornheim Obs. (Aug. 22.94-95p5 & 23.94-95p4)
01865 1865 Cerberus (1971 UA) from CSS (Oct. 16.17-19p4)
00433 433 Eros (1898 DQ) from Bornheim Obs. (Aug. 31.83-85p5, Sept. 7.84-86p5 & 8.84-86p5), Madonna di Dossobuono Obs. (Oct. 19.79-80p3), and Corner Obs. (Oct. 19.83-88p8)

Observers on 20 October '09

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

Code	Observer / observatory
`251`	Arecibo in Puerto Rico, 1 in radar -- 152664
`H55`	Astronomical Research Obs. (ARO) in Illinois, 46 in MPEC 2009-U50 -- 2009 UQ, 2009 UP1, 2009 UK, 2009 UJ, 2009 UG, 2009 UF, 2009 UD2, 2009 UD, 2009 UC, 2009 TT, 2009 TQ8, 2009 TP, 2009 TO8, 2009 TN8, 2009 TK8, 2009 TJ4, 2009 TF8, 2009 TF10, 2009 TE10, 2009 SW171, 2009 SV171, 2009 SU104, 2009 SS104, 2009 SQ, 2009 SM103, 2009 SM, 2009 SJ2, 2009 SG18, 2009 SG, 2009 SC229, 2009 SB, 2009 RT1, 2009 RN, 2009 RM, 2009 RD1, 2009 QT, 2009 QS, 2009 QR8, 2009 QL8, 2009 QL32, 2009 QF31, 2009 QD34, 2009 QB35, 2009 NH, 2005 XL80, 152664
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-U50 -- 2009 TQ8
`B75`	Betelgeuse Station in Italy, 6 in MPEC 2009-U50 -- 2009 TK8, 2009 ST19, 2009 SM103, 2009 NA, 2009 KC3, 3200
`127`	Bornheim Obs. in Germany, 8 in MPEC 2009-U50 -- 2009 KC3, 2002 NP1, 17274, 16834, 163697, 138883, 1943, 433
`703`	Catalina Sky Survey (CSS) in Arizona, 19 in MPECs 2009-U50 & 2009-U53 -- 2009 UO3, 2009 SM103, 2009 QG34, 2009 ML1, 2006 AO4, 2005 SG19, 2004 XM35, 2003 UB10, 1998 MR24, 85628, 54401, 218863, 20826, 17274, 16834, 143678, 137805, 136617, 1865
`B50`	Corner Obs. in Germany, 1 in MPEC 2009-U50 -- 433
`114`	Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-U51 -- 2009 UM3
`151`	Eschenberg Obs. in Switzerland, 3 in MPEC 2009-U50 -- 2009 UQ, 2009 TK12, 2009 SM103
`253`	Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 152664
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-U54 -- P/2009 S1
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2009-U50 -- 54660
`379`	Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2009-U50 -- 2009 ST19, 2009 SM103, 2009 RN, 2009 KC3, 2005 RQ6, 3200
`240`	Herrenberg Obs. in Germany, 2 in MPEC 2009-U50 -- 54401, 185716
`B15`	Inastars Obs. in Germany, 1 in MPEC 2009-U50 -- 9202
`585`	Kiev Comet Station in the Ukraine, 1 in MPEC 2009-U54 -- P/2009 S1
`704`	LINEAR in New Mexico, 9 in MPECs 2009-U50 & 2009-U51 -- 2009 UM3, 2009 TM10, 2009 SW, 2009 OC, 2008 JO, 2005 RQ6, 2003 UL12, 85709, 218863
`J75`	La Sagra Obs. in Spain, 8 in MPEC 2009-U50 -- 2009 TA1, 2009 SM, 2009 QH2, 38091, 220909, 16816, 154244, 3288
`B33`	Libbiano Obs. in Italy, 2 in MPECs 2009-U50 & 2009-U51 -- 2009 UM3, 2009 UJ
`844`	Los Molinos Obs. in Uruguay, 1 in MPEC 2009-U51 -- 2009 UM3
`560`	Madonna di Dossobuono Obs. in Italy, 5 in MPEC 2009-U50 -- 2009 UQ, 2009 SG, 2009 MC9, 159402, 433
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2009-U51 & 2009-U53 -- 2009 UO3, 2009 UM3
`B67`	Mirasteilas Obs. in Switzerland, 5 in MPEC 2009-U50 -- 2009 TK8, 2009 RM, 154244, 6239, 3288
`900`	Moriyama Obs. in Japan, 2 in MPECs 2009-U53 & 2009-U54 -- 2009 UO3, P/2009 S1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2009-U50 -- 2009 ST, 2009 RB4
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPECs 2009-U50 & 2009-U54 -- 2009 TK12, 2009 SM103, 2009 SG2, 2009 SC229, P/2009 S1, 2009 HV44
`854`	Sabino Canyon Obs. in Arizona, 2 in MPECs 2009-U51 & 2009-U53 -- 2009 UO3, 2009 UM3
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-U53 -- 2009 UO3
`D21`	Shenton Park Obs. in Western Australia, 1 in MPEC 2009-U53 -- 2009 UO3
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2009-U50 & 2009-U52 -- 2009 UW2, 2009 UN3
`291`	Spacewatch 1.8m telescope in Arizona, 16 in MPEC 2009-U50 -- 2009 UK, 2009 UF2, 2009 UD2, 2009 TS7, 2009 TG8, 2009 TE10, 2009 TC8, 2009 SW19, 2009 SV17, 2009 SS172, 2009 SB, 2009 RV1, 2004 YR32, 2003 KN18, 2000 AD6, 1996 EO
`926`	Tenagra II Obs. in Arizona, 3 in MPEC 2009-U50 -- 2009 TO8, 2009 TG8, 2009 TF8
`A48`	Verona Obs. in Italy, 2 in MPEC 2009-U50 -- 2009 UQ, 2009 SG2

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

Impact Risk Monitoring on 20 October '09

**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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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

2009 UN3	JPL Sentry	1700	2056	1	1.7e-10	-5.82	-5.82	0	JPL: "Analysis based on 8 observations spanning .91994 days (2009-Oct-19.59856 to 2009-Oct-20.5185)." Diameter approximately 1.000 km. from mean, weighted H=17.6.

2009 UF2	NEODyS	1502	2052-2079	3	1.18e-08	-7.68	-7.74	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2009/10/18.223 to 2009/10/20.169."
2009 UF2	JPL Sentry	1501	2037-2079	3	1.2e-08	-7.49	-7.53	0	JPL: "Analysis based on 11 observations spanning 1.9453 days (2009-Oct-18.22265 to 2009-Oct-20.16798)." Diameter approximately 0.046 km. from mean, weighted H=24.3.

2009 UD2	JPL Sentry	1501	R E M O V E D						JPL: Risk listing removed at 1034 UTC.

2009 UE	JPL Sentry	2000	R E M O V E D						JPL: Risk listing removed at 1951 UTC.

2009 TE10	NEODyS	1501	R E M O V E D						-
2009 TE10	JPL Sentry	1501	R E M O V E D						JPL: Risk listing removed at 1035 UTC.

2009 TQ8	NEODyS	1501	R E M O V E D						-
2009 TQ8	JPL Sentry	1501	R E M O V E D						JPL: Risk listing removed at 1035 UTC.

2009 TO8	JPL Sentry	1501	R E M O V E D						JPL: Risk listing removed at 1031 UTC.

2009 TM8	JPL Sentry	2202	2079-2109	107	6.6e-05	-6.26	-7.38	0	JPL: "Analysis based on 48 observations spanning 2.2516 days (2009-Oct-15.2109 to 2009-Oct-17.46255)." Diameter approximately 0.007 km. from mean, weighted H=28.6.

2009 TH8	JPL Sentry	2000	2068-2100	4	9.1e-06	-5.18	-5.30	0	JPL: "Analysis based on 41 observations spanning 3.9348 days (2009-Oct-14.54405 to 2009-Oct-18.47885)." Diameter approximately 0.036 km. from mean, weighted H=24.9.

2009 TC8	JPL Sentry	1501	2017-2098	7	1.5e-09	-5.53	-5.74	0	JPL: "Analysis based on 28 observations spanning 5.0209 days (2009-Oct-14.16478 to 2009-Oct-19.18571)." Diameter approximately 0.562 km. from mean, weighted H=18.9.
2009 TC8	NEODyS	1501	R E M O V E D						-

2009 TS7	NEODyS	1501	R E M O V E D						-
2009 TS7	JPL Sentry	1501	R E M O V E D						JPL: Risk listing removed at 0951 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 20 October '09

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

2202	Noted that JPL Sentry has updated its 2009 TM8 risk assessment - see above Grabbed MPEC 2009-U54 - Comet P/2009 S1 (Gibbs) - see above
2000	Noted that JPL Sentry has updated its 2009 TH8 risk assessment - see above Noted that JPL Sentry has removed 2009 UE as an impact risk - see above
1909	Noted Radar Astrometry database update - see above
1700	Noted that JPL Sentry has posted 2009 UN3 as an impact risk - see above Grabbed MPEC 2009-U51 - 2009 UM3 - see above Grabbed MPEC 2009-U52 - 2009 UN3 - see above Grabbed MPEC 2009-U53 - 2009 UO3 - see above
1502	Grabbed MPEC 2009-U50 - Daily Orbit Update - see above
1501	Noted that JPL Sentry has updated its 2009 TC8 risk assessment - see above Noted that NEODyS has removed 2009 TC8 as an impact risk - see above Noted that JPL Sentry has removed 2009 TE10 as an impact risk - see above Noted that NEODyS has removed 2009 TE10 as an impact risk - see above Noted that JPL Sentry has removed 2009 TO8 as an impact risk - see above Noted that JPL Sentry has removed 2009 TQ8 as an impact risk - see above Noted that NEODyS has removed 2009 TQ8 as an impact risk - see above Noted that JPL Sentry has removed 2009 TS7 as an impact risk - see above Noted that NEODyS has removed 2009 TS7 as an impact risk - see above Noted that JPL Sentry has removed 2009 UD2 as an impact risk - see above Noted that JPL Sentry has updated its 2009 UF2 risk assessment - see above Noted that NEODyS has posted 2009 UF2 as an impact risk - see above

http://www.HohmannTransfer.com/mn/09/09293_1020.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2009 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).