2009-01-26 Tracking News

Contents on 26 January '09

IAU Minor Planet Center
- NEOCP Activity -- five listings: 1 new, 4 updated
- New MPECs -- seven MPECs
Observers -- 22 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 26 January '09

The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of thirteen 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 26 January '09

Minor Planet Electronic Circulars

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

MPEC 2009-B53 time-stamped "07:05 UT" - Daily Orbit Update - see below
MPEC 2009-B54 time-stamped "17:09 UT" - 2009 BB11 - see below
MPEC 2009-B55 time-stamped "17:16 UT" - 2009 BA11 - see below
MPEC 2009-B56 time-stamped "17:19 UT" - 2009 BC11 - see below
MPEC 2009-B57 time-stamped "17:23 UT" - 2009 BD11 - see below
MPEC 2009-B58 time-stamped "23:38 UT" - 2009 BG11 - see below
MPEC 2009-B59 time-stamped "23:42 UT" - 2009 BH11

MPEC 2009-B59 - "23:42 UT" - 2009 BH11

K09B11H 2009 BH11 (small asteroid, Q=4.024 AU, Earth MOID=1.6 LD, H=25.8 ~23m) was discovered at 0623 UT on 26 Jan. by LINEAR, which observed it at Jan. 26.27-31p5. The discovery was confirmed by Great Shefford Obs. (Jan. 26.96-97p3). This object is now within ten lunar distances (LD) of Earth, reaching 1.9 LD on 24 Jan.

MPEC 2009-B58 - "23:38 UT" - 2009 BG11

K09B11G 2009 BG11 (small asteroid, H=22.1 ~129m) was discovered at 0334 UT on 26 Jan. by LINEAR, which observed it at Jan. 26.15-18p4. The discovery was confirmed by Great Shefford Obs. (Jan. 26.95p4).

MPEC 2009-B57 - "17:23 UT" - 2009 BD11

K09B11D 2009 BD11 (small asteroid, Q=4.211 AU, H=26.1 ~20m) was discovered at 0403 UT on 26 Jan. by the Mt. Lemmon Survey (MLS), which observed it at Jan. 26.17-19p8 and 26.27-28p4.

MPEC 2009-B56 - "17:19 UT" - 2009 BC11

K09B11C 2009 BC11 (small asteroid, H=22.1 ~129m) was discovered at 0957 UT on 25 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 25.41-50p10. The discovery was confirmed by Wildberg Obs. (Jan. 26.08-09p4) and MLS (Jan. 26.41-42p4).

MPEC 2009-B55 - "17:16 UT" - 2009 BA11

K09B11A 2009 BA11 (small asteroid, H=23.9 ~56m) was discovered at 0823 UT on 25 Jan. by CSS, which observed it at Jan. 25.35-37p3, 25.41p4, and 25.51p4. The discovery was confirmed by Guidestar Obs. (Jan. 25.85-88p3) and MLS (Jan. 26.28-29p2).

MPEC 2009-B54 - "17:09 UT" - 2009 BB11

K09B11B 2009 BB11 (H=19.3 ~467m) was discovered at 0956 UT on 25 Jan. by CSS, which observed it at Jan. 25.41-44p4 and 25.49-50p4. The discovery was confirmed by Gaisberg Obs. (Jan. 26.02-03p4) and MLS (Jan. 26.41-42p3).

<< DOU on 26 Jan. '09 >> MPEC 2009-B53 - "07:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K09B05R 2009 BR5 (small asteroid, arc=5 days, H=22.2 ~123m) from the Spacewatch 1.8m telescope (Jan. 25.30-31p3)
K09B05P 2009 BP5 (small asteroid, arc=5 days, H=22.5 ~107m) from Spacewatch 1.8m (Jan. 25.29p3) and LINEAR (Jan. 25.34-39p5)
K09B00D 2009 BD (small asteroid, arc=10 days, H=28.8 ~6m) from Great Shefford Obs. (Jan. 26.01-03p3)
K08Y03C 2008 YC3 (small asteroid, arc=30 days, H=25.3 ~29m) from Magdalena Ridge Obs. (MRO) (Jan. 21.07p1 at R=22.3 & 21.16p1 at R=22.3)
Observations of recently (no longer) risk-listed objects
K09B02E 2009 BE2 (arc=9 days, H=18.9 ~562m) from Spacewatch 1.8m (Jan. 25.22-24p3)
K09A15M 2009 AM15 (arc=19 days, H=18.6 ~645m) from the Siding Spring Survey (SSS) (Jan. 25.61-62p2)
K08Y30T 2008 YT30 (arc=25 days, H=19.3 ~467m) from Spacewatch 1.8m (Jan. 25.20-21p3)
K08Y29A 2008 YA29 (small asteroid, arc=26 days, H=24.9 ~35m) from Spacewatch 1.8m (Jan. 25.38p2)
Observations of small asteroids (H>22.0)
K09B05S 2009 BS5 (arc=5 days, H=27.4 ~11m) from Spacewatch 1.8m (Jan. 25.31-32p2)
K09B05Q 2009 BQ5 (arc=5 days, H=23.2 ~78m) from Spacewatch 1.8m (Jan. 25.42p2)
K09B02W 2009 BW2 (arc=6 days, H=25.1 ~32m) from Guidestar Obs. (Jan. 25.78-81p3)
K09B02K 2009 BK2 (arc=7 days, H=25.3 ~29m) from Astronomical Research Obs. (ARO) (Jan. 25.16-18p3 at V=21.8-22.1) and Spacewatch 1.8m (Jan. 25.39-40p3)
K09B02H 2009 BH2 (arc=5 days, H=22.4 ~112m) from Schiaparelli Obs. (Jan. 22.18-19p5)
K09B00G 2009 BG (arc=9 days, H=25.5 ~27m) from Desert Moon Obs. (Jan. 25.35-38p3)
K08Y02M 2008 YM2 (arc=35 days, H=24.0 ~54m) from ARO (Jan. 25.10-14p3 at V=22.1)
K07U01Y 2007 UY1 (arc=2 opp, H=22.9 ~89m) from ARO (Jan. 25.03-04p3) and LINEAR (Jan. 25.22-26p4)
Observations of other objects
K09B05T 2009 BT5 (arc=5 days, H=20.8 ~234m) from Spacewatch 1.8m (Jan. 25.32-33p2)
K09B02M 2009 BM2 (Q=4.257 AU, arc=7 days, H=19.8 ~371m) from Hamamatsu-Yuto Obs. (Jan. 25.74-78p5)
K09A16H 2009 AH16 (arc=10 days, H=17.6 ~1.02 km) from Desert Moon Obs. (Jan. 25.52-53p5)
K09A16D 2009 AD16 (Q=4.169 AU, arc=10 days, H=20.6 ~257m) from Grove Creek Obs. (Jan. 24.71-72p4 & 25.59-61p4) and Petit Jean Mtn. South Obs. (PJMSO) (Jan. 25.31p8)
K09A15L 2009 AL15 (arc=18 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 25.40-41p3)
K09A00M 2009 AM (Q=4.769 AU, arc=24 days, H=21.4 ~178m) from Desert Moon Obs. (Jan. 25.29-32p3)
K08YE8V 2008 YV148 (arc=35 days, H=20.5 ~269m) from Mirasteilas Obs. (Jan. 25.94-95p3)
K08Y27R 2008 YR27 (arc=49 days, H=18.1 ~812m) from LINEAR (Jan. 25.22-27p5), Desert Moon Obs. (Jan. 25.26-27p3), and Guidestar Obs. (Jan. 25.82-84p3)
K08Y02R 2008 YR2 (arc=35 days, H=18.8 ~589m) from Desert Moon Obs. (Jan. 25.40-42p3)
K08X03E 2008 XE3 (Q=4.045 AU, arc=2 opp, H=16.3 ~1.86 km) from PJMSO (Jan. 25.29-30p2)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.5 ~676m) from PJMSO (Jan. 25.24-25p6) and Eschenberg Obs. (Jan. 25.75-76p3)
K08Q03T 2008 QT3 (arc=154 days, H=18.8 ~589m) from LINEAR (Jan. 25.16-21p5), PJMSO (Jan. 25.18-19p8), Hamamatsu-Yuto Obs. (Jan. 25.52-55p11), and Eschenberg Obs. (Jan. 25.74p7)
K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from PJMSO (Jan. 25.19-21p6) and Hamamatsu-Yuto Obs. (Jan. 25.55-57p6)
K06Y00N 2006 YN (arc=2 opp, H=19.6 ~407m) from Spacewatch 1.8m (Jan. 25.45-46p3 at V=21.9-22.3)
K06O07D 2006 OD7 (arc=2 opp, H=19.4 ~446m) from Spacewatch 1.8m (Jan. 25.47-48p3 at V=22.1-3)
K06K01T 2006 KT1 (arc=4 opp, H=16.6 ~1.62 km) from Spacewatch 1.8m (Jan. 25.44-45p3 at V=22.4)
K06A02S 2006 AS2 (arc=4 opp, H=20.4 ~282m) from PJMSO (Jan. 25.32p6), Hamamatsu-Yuto Obs. (Jan. 25.68-72p12), Mirasteilas Obs. (Jan. 25.79-81p3), and Naef Obs. (Jan. 25.88-90p2)
K05S25N 2005 SN25 (arc=3 opp, H=19.8 ~371m) from ARO (Jan. 25.05-07p3) and Eschenberg Obs. (Jan. 25.82-83p2)
K05S19G 2005 SG19 (Q=4.171 AU, arc=2 opp, H=16.8 ~1.48 km) from Desert Moon Obs. (Jan. 25.45-49p3)
K05P16Y 2005 PY16 (arc=3 opp, H=19.3 ~467m) from ARO (Jan. 25.26-30p3 at V=22.1-5)
K05N07E 2005 NE7 (arc=4 opp, H=19.0 ~537m) from ARO (Jan. 25.31-32p2 at V=21.9-22.1)
K03X22B 2003 XB22 (arc=3 opp, H=19.3 ~467m) from PJMSO (Jan. 25.27-28p5) and Eschenberg Obs. (Jan. 25.85-86p3)
K02J08Y 2002 JY8 (arc=3 opp, H=17.7 ~977m) from Spacewatch 1.8m (Jan. 25.50p2)
K02A05C 2002 AC5 (arc=3 opp, H=19.9 ~355m) from PJMSO (Jan. 25.26-27p5)
K01W01T 2001 WT1 (arc=3 opp, H=20.1 ~323m) from PJMSO (Jan. 25.25-26p5) and Naef Obs. (Jan. 25.77-81p2)
K01Q96G 2001 QG96 (arc=4 opp, H=19.7 ~389m) from Spacewatch 1.8m (Jan. 25.36-37p2)
K01O84E 2001 OE84 (arc=3 opp, H=17.9 ~891m) from Mirasteilas Obs. (Jan. 25.87-88p3)
K01F90E 2001 FE90 (arc=2 opp, H=19.8 ~371m) from Spacewatch 1.8m (Jan. 25.34-35p3)
K00O00M 2000 OM (arc=3 opp, H=18.6 ~645m) from Desert Moon Obs. (Jan. 25.07-10p3)
J99C08W 1999 CW8 (arc=3 opp, H=18.6 ~645m) from Inastars Obs. (Jan. 25.72-73p4)
G2004 162004 1991 VE from LINEAR (Jan. 25.15-20p5)
F2889 152889 2000 CF59 from CSS (Jan. 25.38-40p4)
E2348 142348 2002 RX211 from LINEAR (Jan. 25.27-32p5)
E1765 141765 2002 MP3 from Naef Obs. (Jan. 25.78-80p2)
B1253 111253 2001 XU10 from LINEAR (Jan. 25.28-31p4) and Naef Obs. (Jan. 25.83-87p3)
68350 68350 2001 MK3 from CSS (Jan. 25.38-40p4)
36236 36236 1999 VV from LINEAR (Jan. 25.09-14p5)
22771 22771 1999 CU3 from CSS (Jan. 25.38-40p4)
12711 12711 Tukmit (1991 BB) from LINEAR (Jan. 25.21-26p5)
10302 10302 1989 ML from CSS (Jan. 25.38-40p4)
07822 7822 1991 CS from LINEAR (Jan. 25.47-52p5)
07480 7480 Norwan (1994 PC) from CSS (Jan. 25.38-41p4)
06050 6050 Miwablock (1992 AE) from LINEAR (Jan. 25.35-40p5) and CSS (Jan. 25.38-40p4)
03199 3199 Nefertiti (1982 RA) from LINEAR (Jan. 25.40-45p5)
03122 3122 Florence (1981 ET3) from the Spacewatch 0.9m telescope (Jan. 25.46-49p3) and Mirasteilas Obs. (Jan. 25.91-92p3)
01863 1863 Antinous (1948 EA) from Ragdon Obs. (Jan. 23.95-97p4)

Observers on 26 January '09

A total of 22 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2009-B53 -- 2009 BK2, 2008 YM2, 2007 UY1, 2005 SN25, 2005 PY16, 2005 NE7
`703`	Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2009-B53, 2009-B54, 2009-B55 & 2009-B56 -- 2009 BC11, 2009 BB11, 2009 BA11, 68350, 22771, 152889, 10302, 7480, 6050
`448`	Desert Moon Obs. in New Mexico, 7 in MPEC 2009-B53 -- 2009 BG, 2009 AM, 2009 AH16, 2008 YR27, 2008 YR2, 2005 SG19, 2000 OM
`151`	Eschenberg Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2008 SQ1, 2008 QT3, 2005 SN25, 2003 XB22
`B21`	Gaisberg Obs. in Austria, 1 in MPEC 2009-B54 -- 2009 BB11
`J95`	Great Shefford Obs. in England, 3 in MPECs 2009-B53, 2009-B58 & 2009-B59 -- 2009 BH11, 2009 BG11, 2009 BD
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-B53 -- 2009 AD16
`A17`	Guidestar Obs. in Germany, 3 in MPECs 2009-B53 & 2009-B55 -- 2009 BW2, 2009 BA11, 2008 YR27
`379`	Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-B53 -- 2009 BM2, 2008 QT3, 2008 EV5, 2006 AS2
`B15`	Inastars Obs. in Germany, 1 in MPEC 2009-B53 -- 1999 CW8
`704`	LINEAR in New Mexico, 14 in MPECs 2009-B53, 2009-B58 & 2009-B59 -- 2009 BP5, 2009 BH11, 2009 BG11, 2008 YR27, 2008 QT3, 2007 UY1, 36236, 162004, 142348, 12711, 111253, 7822, 6050, 3199
`H01`	Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2009-B53 -- 2008 YC3
`B67`	Mirasteilas Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2008 YV148, 2006 AS2, 2001 OE84, 3122
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2009-B54, 2009-B55, 2009-B56 & 2009-B57 -- 2009 BD11, 2009 BC11, 2009 BB11, 2009 BA11
`A13`	Naef Obs. in Switzerland, 4 in MPEC 2009-B53 -- 2006 AS2, 2001 WT1, 141765, 111253
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2009-B53 -- 2009 AD16, 2008 XE3, 2008 SQ1, 2008 QT3, 2008 EV5, 2006 AS2, 2003 XB22, 2002 AC5, 2001 WT1
`J17`	Ragdon Obs. in England, 1 in MPEC 2009-B53 -- 1863
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2009-B53 -- 2009 BH2
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2009-B53 -- 2009 AM15
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-B53 -- 3122
`291`	Spacewatch 1.8m telescope in Arizona, 16 in MPEC 2009-B53 -- 2009 BT5, 2009 BS5, 2009 BR5, 2009 BQ5, 2009 BP5, 2009 BK2, 2009 BE2, 2009 AL15, 2008 YT30, 2008 YA29, 2006 YN, 2006 OD7, 2006 KT1, 2002 JY8, 2001 QG96, 2001 FE90
`198`	Wildberg Obs. in Germany, 1 in MPEC 2009-B56 -- 2009 BC11

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

Impact Risk Monitoring on 26 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	1425	2025-2108	36	2.7e-06	-4.04	-4.80	0	JPL: "Analysis based on 15 observations spanning 4.8517 days (2009-Jan-20.45513 to 2009-Jan-25.30679)." Diameter approximately 0.122 km. from mean, weighted H=22.2.
2009 BR5	NEODyS	1425	2025-2081	49	2.74e-06	-4.04	-4.82	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/25.308."

2009 BP5	JPL Sentry	1425	R E M O V E D						JPL: Risk listing removed at 0952 UTC.
2009 BP5	NEODyS	1425	R E M O V E D						-

2009 BD	JPL Sentry	1425	2060-2107	9	6.5e-04	-5.11	-5.29	0	JPL: "Analysis based on 118 observations spanning 9.7514 days (2009-Jan-16.27641 to 2009-Jan-26.027773)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
2009 BD	NEODyS	1425	2060-2088	17	6.55e-04	-5.11	-5.29	0	NEODyS: "Based on 119 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/01/26.029."

2008 YC3	JPL Sentry	1425	2088-2106	4	2.0e-08	-8.26	-8.34	0	JPL: "Analysis based on 34 observations spanning 29.911 days (2008-Dec-22.25277 to 2009-Jan-21.16386)." Diameter approximately 0.029 km. from mean, weighted H=25.4.

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 26 January '09

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

2358	Grabbed MPEC 2009-B58 - 2009 BG11 - see above Grabbed MPEC 2009-B59 - 2009 BH11 - see above
1730	Grabbed MPEC 2009-B54 - 2009 BB11 - see above Grabbed MPEC 2009-B55 - 2009 BA11 - see above Grabbed MPEC 2009-B56 - 2009 BC11 - see above Grabbed MPEC 2009-B57 - 2009 BD11 - see above
1425	Noted that JPL Sentry has updated its 2008 YC3 risk assessment - see above Noted that JPL Sentry has updated its 2009 BD risk assessment - see above Noted that NEODyS has updated its 2009 BD risk assessment - see above Noted that JPL Sentry has removed 2009 BP5 as an impact risk - see above Noted that NEODyS has removed 2009 BP5 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-B53 - Daily Orbit Update - see above

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