2010-01-13 Tracking News

Contents on 13 January '10

IAU Minor Planet Center
- NEOCP Activity -- five listings: 3 new, 2 updated
- New MPECs -- five MPECs
Observers -- fifteen 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 13 January '10

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. Of these, three 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 13 January '10

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 2010-A66 time-stamped "07:10 UT" - Daily Orbit Update - see below
MPEC 2010-A67 time-stamped "14:51 UT" - 2010 AE40 - see below
MPEC 2010-A68 time-stamped "15:02 UT" - 2010 AF40 - see below
MPEC 2010-A69 time-stamped "15:10 UT" - 2010 AG40 - see below
MPEC 2010-A70 time-stamped "21:43 UT" - 2008 JO24

MPEC 2010-A70 - "21:43 UT" - 2008 JO24

K08J24O 2008 JO24 (H=18.7 ~616m) from Astronomical Research Obs. Westfield (ARO Westfield) (Jan. 10.36-38p3 at V=21.9-22.2 & 13.35-38p3 at V=21.8-9)

MPEC 2010-A69 - "15:10 UT" - 2010 AG40

K10A40G 2010 AG40 (small asteroid, H=22.1 ~129m) was discovered at 0856 UT on 12 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 12.37-39p3. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Jan. 12.47-53p7 & 13.31-34p4), Tenagra II Obs. (Jan. 12.51p3), and ARO Westfield (Jan. 13.38-39p4).

MPEC 2010-A68 - "15:02 UT" - 2010 AF40

K10A40F 2010 AF40 (risk-listed, Earth MOID=0.7 LD, H=25.0 ~34m) was discovered at 0834 UT on 12 Jan. by the Mt. Lemmon Survey (MLS), which observed it at Jan. 12.36-38p4. The discovery was confirmed by MRO (Jan. 12.40-44p4 & 13.26-28p4), the Spacewatch 1.8m telescope (Jan. 12.48-49p3), ARO Westfield (Jan. 13.28p2), and Sabino Canyon Obs. (Jan. 13.33-34p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 2.7 LD on 21 Jan.

MPEC 2010-A67 - "14:51 UT" - 2010 AE40

K10A40E 2010 AE40 (small asteroid, H=23.8 ~59m) was discovered at 0803 UT on 12 Jan. by CSS, which observed it at Jan. 12.34-36p4. The discovery was confirmed by MRO (Jan. 12.44-46p4 & 13.27-29p5), Tenagra II Obs. (Jan. 12.48p3), Sabino Canyon Obs. (Jan. 13.19-20p2), Rio Cuarto Obs. (Jan. 13.21-24p4), and ARO Westfield (Jan. 13.35p3).

<< DOU on 13 Jan. '10 >> MPEC 2010-A66 - "07:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K09X00O 2009 XO (arc=34 days, H=20.5 ~269m) from LINEAR (Jan. 12.46-51p5), Spacewatch 1.8m (Jan. 12.53p3), and Tenagra II Obs. (Jan. 12.55-56p3)
Observations of recently (no longer) risk-listed objects
K10A30E 2010 AE30 (small asteroid, arc=2 days, H=23.5 ~68m) from Tenagra II Obs. (Jan. 12.19p3)
Observations of small asteroids (H>22.0)
K10A30L 2010 AL30 (arc=3 days, H=27.2 ~12m) from Klet Obs. (Jan. 12.95p6), Maidbronn Obs. (Jan. 13.05-06p6), and CEAMIG-REA (Jan. 13.07p9)
K10A30G 2010 AG30 (arc=2 days, H=27.0 ~13m) from Tenagra II Obs. (Jan. 12.28-29p3)
K10A03B 2010 AB3 (Q=4.302 AU, arc=4 days, H=23.2 ~78m) from Tenagra II Obs. (Jan. 12.20p3)
K10A02N 2010 AN2 (arc=5 days, H=22.2 ~123m) from Spacewatch 1.8m (Jan. 12.47p2)
K10A02M 2010 AM2 (arc=5 days, H=23.6 ~65m) from Spacewatch 1.8m (Jan. 12.45-46p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10A30F 2010 AF30 (arc=2 days, H=21.8 ~148m) from MLS (Jan. 12.26-29p5)
Observations of other objects
K09X02B 2009 XB2 (arc=32 days, H=20.4 ~282m) from CSS (Jan. 12.30-32p3)
K09WP3E 2009 WE253 (Q=4.016 AU, arc=2 opp, H=17.7 ~977m) from MLS (Jan. 12.42-45p4)
K09R00N 2009 RN (Q=4.583 AU, arc=123 days, H=20.0 ~339m) from LINEAR (Jan. 12.28-30p3)
K09N00A 2009 NA (Q=4.129 AU, arc=195 days, H=17.6 ~1.02 km) from MLS (Jan. 12.22-24p4)
K09M06X 2009 MX6 (arc=202 days, H=19.2 ~490m) from MLS (Jan. 12.21-24p3)
K08Y32Z 2008 YZ32 (arc=2 opp, H=20.1 ~323m) from LINEAR (Jan. 12.21-26p5)
K05Q00L 2005 QL (arc=2 opp, H=18.7 ~616m) from LINEAR (Jan. 12.27-32p5)
K05A42T 2005 AT42 (Q=4.606 AU, arc=4 opp, H=16.5 ~1.70 km) from LINEAR (Jan. 12.46-51p4)
K04X50D 2004 XD50 (arc=2 opp, H=18.5 ~676m) from CSS (Jan. 12.34-35p3)
K04T18B 2004 TB18 (arc=3 opp, H=17.7 ~977m) from LINEAR (Jan. 12.46-51p5)
K04A01R 2004 AR1 (arc=4 opp, H=19.8 ~371m) from CSS (Jan. 12.42-44p4)
K02Y02N 2002 YN2 (i=50.3°, arc=5 opp, H=18.4 ~708m) from MLS (Jan. 12.30-32p4)
K00WE8P 2000 WP148 (arc=5 opp, H=19.3 ~467m) from MLS (Jan. 12.08-14p10)
L9527 219527 2001 QK142 from CSS (Jan. 12.30-32p4 & 12.37-39p4)
L8863 218863 2006 WO127 from Thompsonville Obs. (Jan. 13.13-14p6)
L4088 214088 2004 JN13 from Thompsonville Obs. (Jan. 13.09-10p6)
I7026 187026 2005 EK70 from LINEAR (Jan. 12.47-51p3)
H5706 175706 1996 FG3 from MLS (Jan. 12.49-51p4)
G4216 164216 2004 OT11 from the Spacewatch 0.9m telescope (Jan. 8.28-31p3)
G3696 163696 2003 EB50 from MLS (Jan. 12.08-14p8) and LINEAR (Jan. 12.08-13p5)
G3692 163692 2003 CY18 from LightBuckets Obs. Mayhill (Jan. 9.18-21p3 & 12.14-17p3)
G2998 162998 2001 SK162 from LINEAR (Jan. 12.08-13p5)
D8937 138937 2001 BK16 from CSS (Jan. 12.21-22p3)
A5141 105141 2000 NF11 from LINEAR (Jan. 12.35-38p4)
99248 99248 2001 KY66 from Spacewatch 0.9m (Jan. 8.22-24p2) and MLS (Jan. 12.39-41p4)
96590 96590 1998 XB from LINEAR (Jan. 12.08-13p5)
39572 39572 1993 DQ1 from Spacewatch 0.9m (Jan. 10.20-21p2)
38091 38091 1999 JT3 from MLS (Jan. 12.16-18p4)
23606 23606 1996 AS1 from Spacewatch 0.9m (Jan. 8.41-44p2)
16064 16064 1999 RH27 from LINEAR (Jan. 12.46-50p3)
10165 10165 1995 BL2 from CSS (Jan. 12.34-36p4)
05653 5653 Camarillo (1992 WD5) from LINEAR (Jan. 12.46-51p5)
05626 5626 1991 FE from CSS (Jan. 12.08-09p4) and Thompsonville Obs. (Jan. 13.11-12p6)
04486 4486 Mithra (1987 SB) from LINEAR (Jan. 12.40-45p5)
04015 4015 Wilson-Harrington (1979 VA) from CSS (Jan. 12.13-15p4) and LINEAR (Jan. 12.14-19p5)
03553 3553 Mera (1985 JA) from CSS (Jan. 12.07-09p4)
03552 3552 Don Quixote (1983 SA) from Thompsonville Obs. (Jan. 13.07-08p5)
02212 2212 Hephaistos (1978 SB) from CSS (Jan. 12.24-26p3 & 12.33-36p3)
01917 1917 Cuyo (1968 AA) from MLS (Jan. 12.54-55p4)
01864 1864 Daedalus (1971 FA) from LINEAR (Jan. 12.46-51p5)
01627 1627 Ivar (1929 SH) from LINEAR (Jan. 12.39-44p5)
00433 433 Eros (1898 DQ) from Thompsonville Obs. (Jan. 13.03-04p6)

Observers on 13 January '10

Fifteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 4 in MPECs 2010-A67, 2010-A68, 2010-A69 & 2010-A70 -- 2010 AG40, 2010 AF40, 2010 AE40, 2008 JO24
`I77`	CEAMIG-REA in Brazil, 1 in MPEC 2010-A66 -- 2010 AL30
`703`	Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2010-A66, 2010-A67 & 2010-A69 -- 2010 AG40, 2010 AE40, 2009 XB2, 2004 XD50, 2004 AR1, 219527, 138937, 10165, 5626, 4015, 3553, 2212
`046`	Klet Obs. in the Czech Republic, 1 in MPEC 2010-A66 -- 2010 AL30
`704`	LINEAR in New Mexico, 17 in MPEC 2010-A66 -- 2009 XO, 2009 RN, 2008 YZ32, 2005 QL, 2005 AT42, 2004 TB18, 96590, 187026, 163696, 162998, 16064, 105141, 5653, 4486, 4015, 1864, 1627
`H12`	LightBuckets Obs. Mayhill in New Mexico, 1 in MPEC 2010-A66 -- 163692
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2010-A67, 2010-A68 & 2010-A69 -- 2010 AG40, 2010 AF40, 2010 AE40
`B82`	Maidbronn Obs. in Germany, 1 in MPEC 2010-A66 -- 2010 AL30
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2010-A66 & 2010-A68 -- 2010 AF40, 2010 AF30, 2009 WE253, 2009 NA, 2009 MX6, 2002 YN2, 2000 WP148, 99248, 38091, 175706, 163696, 1917
`I20`	Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-A67 -- 2010 AE40
`854`	Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-A67 & 2010-A68 -- 2010 AF40, 2010 AE40
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2010-A66 -- 99248, 39572, 23606, 164216
`291`	Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2010-A66 & 2010-A68 -- 2010 AN2, 2010 AM2, 2010 AF40, 2009 XO
`926`	Tenagra II Obs. in Arizona, 6 in MPECs 2010-A66, 2010-A67 & 2010-A69 -- 2010 AG40, 2010 AG30, 2010 AE40, 2010 AE30, 2010 AB3, 2009 XO
`H53`	Thompsonville Obs. in Illinois, 5 in MPEC 2010-A66 -- 218863, 214088, 5626, 3552, 433

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

Impact Risk Monitoring on 13 January '10

**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

2010 AF40	JPL Sentry	1721	2018-2063	3	1.6e-09	-8.25	-8.37	0	JPL: "Analysis based on 20 observations spanning .98604 days (2010-Jan-12.35742 to 2010-Jan-13.34346)." Diameter approximately 0.034 km. from mean, weighted H=25.0.

2009 XO	JPL Sentry	1500	2038-2081	2	3.8e-07	-4.08	-4.13	0	JPL: "Analysis based on 207 observations spanning 34.403 days (2009-Dec-09.152 to 2010-Jan-12.55502)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
2009 XO	NEODyS	1500	2038-2081	2	3.78e-07	-4.08	-4.13	0	NEODyS: "Based on 207 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/12.556."

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 13 January '10

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

2204	Grabbed MPEC 2010-A70 - 2008 JO24 - see above
1721	Noted that JPL Sentry has posted 2010 AF40 as an impact risk - see above
1601	Grabbed MPEC 2010-A68 - 2010 AF40 - see above Grabbed MPEC 2010-A69 - 2010 AG40 - see above
1500	Noted that JPL Sentry has updated its 2009 XO risk assessment - see above Noted that NEODyS has updated its 2009 XO risk assessment - see above Grabbed MPEC 2010-A66 - Daily Orbit Update - see above Grabbed MPEC 2010-A67 - 2010 AE40 - see above

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