2009-01-29 Tracking News

Contents on 29 January '09

IAU Minor Planet Center
- NEOCP Activity -- 19 listings: 3 new, 16 updated
- New MPECs -- four MPECs
Observers -- eleven observing facilities
Impact Risk Monitoring -- four 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 29 January '09

The MPC's NEO Confirmation Page has 19 listings: 3 new, 16 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and sixteen updated listings. Of these, six were "one nighters."

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 29 January '09

Minor Planet Electronic Circulars

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

MPEC 2009-B68 time-stamped "04:26 UT" - 2005 YR3 - see below
MPEC 2009-B69 time-stamped "07:06 UT" - Daily Orbit Update - see below
MPEC 2009-B70 time-stamped "23:16 UT" - Comets C/2008 U6, 2008 U10, 2008 U11, 2008 U12 (SOHO) - see below
MPEC 2009-B71 time-stamped "23:27 UT" - Comets C/2008 U13, 2008 U14, 2008 U15, 2008 U16 (SOHO)

MPEC 2009-B71 - "23:27 UT" - Comets C/2008 U13, 2008 U14, 2008 U15, 2008 U16 (SOHO)

CK08U160 C/2008 U16 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (2008 Oct. 31.08-19p18)
CK08U150 C/2008 U15 from SOHO C2 (2008 Oct. 28.41-50p16)
CK08U140 C/2008 U14 from SOHO C2 (2008 Oct. 27.45-54p14)
CK08U130 C/2008 U13 from the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (2008 Oct. 26.99-03p6 & 2008 Oct. 27.07-35p28) and SOHO C2 (2008 Oct. 27.35-46p18)

MPEC 2009-B70 - "23:16 UT" - Comets C/2008 U6, 2008 U10, 2008 U11, 2008 U12 (SOHO)

CK08U120 C/2008 U12 from SOHO C2 (2008 Oct. 26.33-40p12)
CK08U110 C/2008 U11 from SOHO C3 (2008 Oct. 24.70-78p8, 2008 Oct. 24.82-85p4, 2008 Oct. 24.89-93p6 & 2008 Oct. 24.97-03p8) and SOHO C2 (2008 Oct. 25.06-10p6 & 2008 Oct. 25.16p2)
CK08U100 C/2008 U10 from SOHO C2 (2008 Oct. 24.52-60p12)

<< DOU on 29 Jan. '09 >> MPEC 2009-B69 - "07:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09B05R 2009 BR5 (almost small, arc=8 days, H=22.0 ~135m) from the Spacewatch 1.8m telescope (Jan. 28.32-33p2)
K09A00L 2009 AL (almost small, Q=4.140 AU, arc=28 days, H=21.8 ~148m) from Spacewatch 1.8m (Jan. 29.16-17p3)
Observations of recently (no longer) risk-listed objects
K09B05P 2009 BP5 (small asteroid, arc=8 days, H=22.6 ~102m) from Spacewatch 1.8m (Jan. 28.31-32p3)
Observations of small asteroids (H>22.0)
K09B11C 2009 BC11 (arc=3 days, H=22.2 ~123m) from the Catalina Sky Survey (CSS) (Jan. 28.49-50p4)
K08V15A 2008 VA15 (arc=81 days, H=23.6 ~65m) from Spacewatch 1.8m (Jan. 28.35-37p3)
Observations of other objects
K09B05T 2009 BT5 (arc=8 days, H=20.6 ~257m) from CSS (Jan. 28.30-32p3) and Spacewatch 1.8m (Jan. 28.34p3)
K09B02M 2009 BM2 (Q=4.276 AU, arc=11 days, H=19.9 ~355m) from CSS (Jan. 28.24-26p4), Walnut Creek Obs. (Jan. 28.28-29p3), and Castelmartini Obs. (Jan. 28.93-94p4)
K09A16F 2009 AF16 (arc=14 days, H=21.1 ~204m) from LINEAR (Jan. 28.27-32p5) and Stia Obs. (Jan. 28.80-81p3)
K09A16D 2009 AD16 (Q=4.197 AU, arc=14 days, H=20.6 ~257m) from Castelmartini Obs. (Jan. 28.89-90p4)
K09A15L 2009 AL15 (arc=21 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 28.41-42p3)
K08X02O 2008 XO2 (arc=55 days, H=18.6 ~645m) from Spacewatch 1.8m (Jan. 29.18p1)
K08U95C 2008 UC95 (arc=89 days, H=18.6 ~645m) from CSS (Jan. 26.36-38p4)
K08U07E 2008 UE7 (arc=60 days, H=20.4 ~282m) from Lulin Minor Bodies Tracking (LIMIT) (Dec. 6.66-77p27 & 7.64-65p6)
K08Q03T 2008 QT3 (arc=157 days, H=18.8 ~589m) from Walnut Creek Obs. (Jan. 28.15-17p6) and Castelmartini Obs. (Jan. 28.87-88p4)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from CSS (Jan. 28.10-12p4) and LINEAR (Jan. 28.15-20p5)
K05N01J 2005 NJ1 (arc=4 opp, H=18.5 ~676m) from LINEAR (Jan. 28.40-44p3)
K04S55V 2004 SV55 (i=41.2°, arc=2 opp, H=18.0 ~851m) from CSS (Jan. 28.43-45p4) and LINEAR (Jan. 28.46-50p4)
K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.8 ~1.48 km) from CSS (Jan. 28.08-10p4)
K02B25K 2002 BK25 (Q=4.017 AU, arc=4 opp, H=18.1 ~812m) from LINEAR (Jan. 28.40-45p5)
K00Y29J 2000 YJ29 (i=43.6°, q=0.327 AU, arc=2 opp, H=17.9 ~891m) from Spacewatch 1.8m (Jan. 29.24-25p3)
K0840 200840 2001 XN254 from LINEAR (Jan. 28.15-20p5)
J8752 198752 2005 EA60 from CSS (Jan. 28.27-29p4)
D7925 137925 2000 BJ19 from CSS (Jan. 28.35-36p4)
85953 85953 1999 FK21 from the Siding Spring Survey (SSS) (Jan. 28.68-72p4)
85867 85867 1999 BY9 from LINEAR (Jan. 28.39-44p5)
25916 25916 2001 CP44 from CSS (Jan. 28.24-25p4)
22771 22771 1999 CU3 from LINEAR (Jan. 28.34-37p3)
22753 22753 1998 WT from CSS (Jan. 28.21-28p8)
22099 22099 2000 EX106 from LINEAR (Jan. 28.15-18p4)
20460 20460 Robwhiteley (1999 LO28) from CSS (Jan. 28.11-12p4)
12923 12923 Zephyr (1999 GK4) from CSS (Jan. 28.15-17p4)
04183 4183 Cuno (1959 LM) from LINEAR (Jan. 28.08-12p4)
04179 4179 Toutatis (1989 AC) from CSS (Jan. 28.18-20p4)
02368 2368 Beltrovata (1977 RA) from LINEAR (Jan. 28.22-27p5)
01627 1627 Ivar (1929 SH) from Montana Blanca Obs. (Jan. 28.82-83p3)

MPEC 2009-B68 - "04:26 UT" - 2005 YR3

K05Y03R 2005 YR3 (risk-listed, Earth MOID=4.1 LD, H=23.4 ~71m) from David Tholen's team on Mauna Kea (Jan. 25.56p2 & 28.64p3)

Observers on 29 January '09

Eleven observing facilities appear in today's MPECs.

Code	Observer / observatory
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2009-B69 -- 2009 BM2, 2009 AD16, 2008 QT3
`703`	Catalina Sky Survey (CSS) in Arizona, 14 in MPEC 2009-B69 -- 2009 BT5, 2009 BM2, 2009 BC11, 2008 UC95, 2005 TZ51, 2004 SV55, 2002 VY94, 25916, 22753, 20460, 198752, 137925, 12923, 4179
`704`	LINEAR in New Mexico, 11 in MPEC 2009-B69 -- 2009 AF16, 2005 TZ51, 2005 NJ1, 2004 SV55, 2002 BK25, 85867, 22771, 22099, 200840, 4183, 2368
`D35`	Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2009-B69 -- 2008 UE7
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2009-B68 -- 2005 YR3
`J46`	Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2009-B69 -- 1627
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2009-B69 -- 85953
`2492`	LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPECs 2009-B70 & 2009-B71 -- C/2008 U16, C/2008 U15, C/2008 U14, C/2008 U13, C/2008 U12, C/2008 U11, C/2008 U10
`2493`	LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2009-B70 & 2009-B71 -- C/2008 U13, C/2008 U11
`291`	Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2009-B69 -- 2009 BT5, 2009 BR5, 2009 BP5, 2009 AL15, 2009 AL, 2008 XO2, 2008 VA15, 2000 YJ29
`A78`	Stia Obs. in Italy, 1 in MPEC 2009-B69 -- 2009 AF16
`G56`	Walnut Creek Obs. in northern California, 2 in MPEC 2009-B69 -- 2009 BM2, 2008 QT3

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

Impact Risk Monitoring on 29 January '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 some objects with impact solutions beyond 100 years.
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 BR5	JPL Sentry	1426	2059-2063	2	1.3e-07	-5.31	-5.37	0	JPL: "Analysis based on 28 observations spanning 7.8755 days (2009-Jan-20.45513 to 2009-Jan-28.33061)." Diameter approximately 0.130 km. from mean, weighted H=22.1.
2009 BR5	NEODyS	1426	2059-2078	2	1.65e-07	-5.21	-5.25	0	NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/28.331."

2009 BE	NEODyS	2149	2037-2090	16	5.88e-04	-3.94	-4.18	0	NEODyS: "Based on 86 optical observations (of which 5 are rejected as outliers) from 2009/01/16.362 to 2009/01/22.397."

2009 AL	JPL Sentry	1426	R E M O V E D						JPL: Risk listing removed at 0949 UTC.

2005 YR3	NEODyS	1426	R E M O V E D						-
2005 YR3	JPL Sentry	1426	R E M O V E D						JPL: Risk listing removed at 0612 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 29 January '09

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

2358	Grabbed MPEC 2009-B70 - Comets C/2008 U6, 2008 U10, 2008 U11, 2008 U12 (SOHO) - see above Grabbed MPEC 2009-B71 - Comets C/2008 U13, 2008 U14, 2008 U15, 2008 U16 (SOHO) - see above
2149	Noted that NEODyS has updated its 2009 BE risk assessment - see above
1426	Noted that JPL Sentry has removed 2005 YR3 as an impact risk - see above Noted that NEODyS has removed 2005 YR3 as an impact risk - see above Noted that JPL Sentry has removed 2009 AL as an impact risk - see above Noted that JPL Sentry has updated its 2009 BR5 risk assessment - see above Noted that NEODyS has updated its 2009 BR5 risk assessment - see above Grabbed MPEC 2009-B69 - Daily Orbit Update - see above
0433	Grabbed MPEC 2009-B68 - 2005 YR3 - see above

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