2009-10-14 Tracking News

Contents on 14 October '09

IAU Minor Planet Center
- NEOCP Activity -- eleven listings: 1 new, 10 updated
- New MPECs -- four MPECs
Observers -- sixteen 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
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 14 October '09

The MPC's NEO Confirmation Page has 11 listings: 1 new, 10 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and ten updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of thirteen 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 14 October '09

Minor Planet Electronic Circulars

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

MPEC 2009-T49 time-stamped "06:09 UT" - Daily Orbit Update - see below
MPEC 2009-T50 time-stamped "13:14 UT" - 2008 UZ6 - see below
MPEC 2009-T51 time-stamped "15:31 UT" - 2009 TJ4 - see below
MPEC 2009-T52 time-stamped "21:08 UT" - 2009 TL4

MPEC 2009-T52 - "21:08 UT" - 2009 TL4

K09T04L 2009 TL4 was discovered at 0315 UT on 14 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 14.14-19p8. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 14.18-20p4), Richard Miles via Faulkes Telescope North (Oct. 14.48p6), Shenton Park Obs. (Oct. 14.50-51p3), and New Millennium Obs. (Oct. 14.84-85p5).

MPEC 2009-T51 - "15:31 UT" - 2009 TJ4

K09T04J 2009 TJ4 was discovered at 0703 UT on 14 Oct. by CSS, which observed it at Oct. 14.29-33p8, 14.43p4, and 14.48p4. The discovery was confirmed by MRO (Oct. 14.36-37p5) and Mt. John Obs. (Oct. 14.62p5).

MPEC 2009-T50 - "13:14 UT" - 2008 UZ6

K08U06Z 2008 UZ6 from the Spacewatch 1.8m telescope (Aug. 10.43-46p3 & Oct. 14.46-49p3)

<< DOU on 14 Oct. '09 >> MPEC 2009-T49 - "06:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K09T03B 2009 TB3 (arc=1 day, H=20.9 ~224m) from Miles/Faulkes North (Oct. 13.47p3)
K09T00U 2009 TU (small asteroid, arc=4 days, H=27.3 ~12m) from Spacewatch 1.8m (Oct. 14.21p3)
Observations of recently (no longer) risk-listed objects
K09T00T 2009 TT (small asteroid, arc=4 days, H=25.0 ~34m) from Tenagra II Obs. (Oct. 13.40p2) and Shenton Park Obs. (Oct. 13.73p2)
K09S18G 2009 SG18 (i=58.5°, Q=5.047 AU, arc=23 days, H=17.9 ~891m) from Spacewatch 1.8m (Oct. 14.13p1)
K09S00B 2009 SB (arc=28 days, H=20.5 ~269m) from Spacewatch 1.8m (Oct. 14.14-15p3)
Observations of small asteroids (H>22.0)
K09T00S 2009 TS (arc=4 days, H=25.5 ~27m) from Tenagra II Obs. (Oct. 13.40-41p3)
K09T00K 2009 TK (arc=5 days, H=22.1 ~129m) from Shenton Park Obs. (Oct. 13.50p3, 13.59p1 & 13.75p1)
Observations of almost-small asteroids (21.7<H<=22.0)
K09Q36C 2009 QC36 (arc=45 days, H=22.0 ~135m) from Spacewatch 1.8m (Oct. 14.16-17p3)
Observations of other objects
K09T01A 2009 TA1 (arc=14 days, H=20.1 ~323m) from Shenton Park Obs. (Oct. 13.77-78p3)
K09SH2Q 2009 SQ172 (arc=15 days, H=18.3 ~741m) from Shenton Park Obs. (Oct. 13.65-66p2)
K09SA3M 2009 SM103 (Q=4.423 AU, arc=18 days, H=16.9 ~1.41 km) from Hamamatsu-Yuto Obs. (Oct. 13.53-56p4)
K09R04B 2009 RB4 (arc=29 days, H=18.1 ~812m) from LINEAR (Oct. 13.24-27p3)
K09Q08R 2009 QR8 (arc=57 days, H=21.7 ~155m) from Spacewatch 1.8m (Oct. 14.22-24p3)
K09O00C 2009 OC (arc=2 opp, H=20.3 ~295m) from LINEAR (Oct. 13.21-25p4)
K09N00H 2009 NH (arc=92 days, H=18.8 ~589m) from the Siding Spring Survey (SSS) (Oct. 11.66-68p4)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Shenton Park Obs. (Oct. 13.56-57p3)
K09H21D 2009 HD21 (Q=4.673 AU, arc=2 opp, H=18.2 ~776m) from AAAA Buenos Aires Obs. (Oct. 4.11-14p3) and SSS (Oct. 11.61-65p4)
K07D41A 2007 DA41 (arc=4 opp, H=17.5 ~1.07 km) from La Sagra Obs. (Oct. 13.10-13p3)
K04E21T 2004 ET21 (i=41.6°, arc=3 opp, H=20.5 ~269m) from Spacewatch 1.8m (Oct. 14.11-12p3)
K01H04A 2001 HA4 (Q=4.817 AU, arc=2 opp, H=17.5 ~1.07 km) from LINEAR (Oct. 13.09-13p4)
K00CA1O 2000 CO101 (arc=2 opp, H=19.0 ~537m) from Hamamatsu-Yuto Obs. (Oct. 13.40-45p5) and Castelmartini Obs. (Oct. 13.77-78p3)
J98M24R 1998 MR24 (arc=3 opp, H=19.2 ~490m) from La Sagra Obs. (Oct. 12.91-94p6)
J93R00A 1993 RA (arc=3 opp, H=19.2 ~490m) from LINEAR (Oct. 13.23-25p3)
L7807 217807 2000 XK44 from SSS (Oct. 11.70-74p4)
L7796 217796 2000 TO64 from Castelmartini Obs. (Oct. 13.80-81p3)
G2998 162998 2001 SK162 from Goodricke-Pigott Obs. (Oct. 12.24-26p3)
F9402 159402 1999 AP10 from Tucci Obs. (Oct. 12.80-82p3)
F4244 154244 2002 KL6 from La Sagra Obs. (Oct. 13.08-11p3)
E3487 143487 2003 CR20 from LINEAR (Oct. 13.22-27p4)
52750 52750 1998 KK17 from LINEAR (Oct. 13.09-14p5)
22771 22771 1999 CU3 from LINEAR (Oct. 12.30-35p4)
20826 20826 2000 UV13 from LINEAR (Oct. 13.15-19p3)
12711 12711 Tukmit (1991 BB) from Castelmartini Obs. (Oct. 13.76-77p3)
05626 5626 1991 FE from LINEAR (Sept. 22.12-14p3)
03988 3988 1986 LA from Castelmartini Obs. (Oct. 13.83p2)
03288 3288 Seleucus (1982 DV) from La Sagra Obs. (Oct. 12.91-94p3)
03200 3200 Phaethon (1983 TB) from Hamamatsu-Yuto Obs. (Oct. 13.49-51p3)
01865 1865 Cerberus (1971 UA) from Goodricke-Pigott Obs. (Oct. 12.14-17p3)

Observers on 14 October '09

Sixteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2009-T49 -- 2009 HD21
`160`	Castelmartini Obs. in Italy, 4 in MPEC 2009-T49 -- 2000 CO101, 217796, 12711, 3988
`703`	Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2009-T51 & 2009-T52 -- 2009 TL4, 2009 TJ4
`F656`	Richard Miles in England via Faulkes Telescope North in Hawaii, 2 in MPECs 2009-T49 & 2009-T52 -- 2009 TL4, 2009 TB3
`683`	Goodricke-Pigott Obs. in Arizona, 2 in MPEC 2009-T49 -- 162998, 1865
`379`	Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2009-T49 -- 2009 SM103, 2000 CO101, 3200
`704`	LINEAR in New Mexico, 9 in MPEC 2009-T49 -- 2009 RB4, 2009 OC, 2001 HA4, 1993 RA, 52750, 22771, 20826, 143487, 5626
`J75`	La Sagra Obs. in Spain, 4 in MPEC 2009-T49 -- 2007 DA41, 1998 MR24, 154244, 3288
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2009-T51 & 2009-T52 -- 2009 TL4, 2009 TJ4
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2009-T51 -- 2009 TJ4
`A24`	New Millennium Obs. in Italy, 1 in MPEC 2009-T52 -- 2009 TL4
`D21`	Shenton Park Obs. in Western Australia, 6 in MPECs 2009-T49 & 2009-T52 -- 2009 TT, 2009 TL4, 2009 TK, 2009 TA1, 2009 SQ172, 2009 KL2
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-T49 -- 2009 NH, 2009 HD21, 217807
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2009-T49 & 2009-T50 -- 2009 TU, 2009 SG18, 2009 SB, 2009 QR8, 2009 QC36, 2008 UZ6, 2004 ET21
`926`	Tenagra II Obs. in Arizona, 2 in MPEC 2009-T49 -- 2009 TT, 2009 TS
`J35`	Tucci Obs. in Spain, 1 in MPEC 2009-T49 -- 159402

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

Impact Risk Monitoring on 14 October '09

**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. 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 TB3	JPL Sentry	1422	2017-2108	78	8.9e-08	-4.93	-5.51	0	JPL: "Analysis based on 17 observations spanning 1.0036 days (2009-Oct-12.47133 to 2009-Oct-13.47498)." Diameter approximately 0.220 km. from mean, weighted H=21.0.
2009 TB3	NEODyS	1422	2013-2088	46	9.34e-08	-4.90	-5.13	0	NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/10/12.472 to 2009/10/13.476."

2009 TU	JPL Sentry	1422	2086-2095	5	2.3e-05	-5.84	-6.28	0	JPL: "Analysis based on 45 observations spanning 4.0250 days (2009-Oct-10.18978 to 2009-Oct-14.21479)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
2009 TU	NEODyS	1422	2084-2086	4	2.24e-05	-5.85	-6.29	0	NEODyS: "Based on 46 optical observations (of which 1 are rejected as outliers) from 2009/10/10.191 to 2009/10/14.216."

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 14 October '09

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

2132	Grabbed MPEC 2009-T52 - 2009 TL4 - see above
1723	Grabbed MPEC 2009-T51 - 2009 TJ4 - see above
1422	Noted that JPL Sentry has updated its 2009 TB3 risk assessment - see above Noted that NEODyS has posted 2009 TB3 as an impact risk - see above Noted that JPL Sentry has updated its 2009 TU risk assessment - see above Noted that NEODyS has updated its 2009 TU risk assessment - see above Grabbed MPEC 2009-T49 - Daily Orbit Update - see above Grabbed MPEC 2009-T50 - 2008 UZ6 - see above
0353	Noted that the NEOCP has become active

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