2010-02-08 Tracking News

Contents on 8 February '10

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- three listings: 2 new, 1 updated
- New MPECs -- five MPECs
Observers -- 20 observing facilities
Impact Risk Monitoring -- one object
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 8 February '10

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 2358 UTC when the database was dated 8 Feb.

2009 UN3 from Goldstone DSS-14 70m antenna (Feb. 8.49 velocity, 8.50 velocity, 8.53 range, 8.55 range & 8.56 range) - see links

NEOCP Activity on 8 February '10

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

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

New MPECs on 8 February '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-C19 time-stamped "00:42 UT" - 2010 CL - see below
MPEC 2010-C20 time-stamped "00:45 UT" - 2010 CM - see below
MPEC 2010-C21 time-stamped "00:48 UT" - 2010 CN - see below
MPEC 2010-C22 time-stamped "07:19 UT" - Daily Orbit Update - see below
MPEC 2010-C23 time-stamped "19:09 UT" - Comet P/2010 B2 (WISE)

MPEC 2010-C23 - "19:09 UT" - Comet P/2010 B2 (WISE)

CK10B020 C/2010 B2 (WISE) (q=1.607 AU, Q=4.380 AU, TP=2009 Dec. 20.89103 TT) from WISE (Jan. 22.64p1, 22.77p1, 22.90p1, 23.03p1, 23.17p1, 23.43p1, 23.50p1, 23.56p1, 23.63p1, 23.76p1, 23.89p1, 24.03p1 & 24.16p1), Astronomical Research Obs. Westfield (ARO Westfield) (Feb. 7.45p3), Mauna Kea (Feb. 7.66p3), and the Spacewatch 1.8m telescope (Feb. 8.47-48p3)

<< DOU on 8 Feb. '10 >> MPEC 2010-C22 - "07:19 UT" - Daily Orbit Update

Observations of risk-listed objects
K10C00A 2010 CA (small asteroid, arc=2 days, H=24.6 ~41m) from ARO Westfield (Feb. 7.20-22p4)
Observations of small asteroids (H>22.0)
K10A61N 2010 AN61 (arc=23 days, H=27.0 ~13m) from ARO Westfield (Feb. 7.38-40p3)
K10A60M 2010 AM60 (arc=23 days, H=23.8 ~59m) from ARO Westfield (Feb. 7.25-30p3 at V=22.0-22.2)
K02X38Y 2002 XY38 (arc=2 opp, H=22.9 ~89m) from Balzaretto Obs. (Feb. 7.81-82p3) and Madonna di Dossobuono Obs. (Feb. 7.92p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10A60O 2010 AO60 (arc=24 days, H=21.8 ~148m) from Madonna di Dossobuono Obs. (Feb. 7.88-89p3)
Observations of other objects
K09W00F 2009 WF (arc=83 days, H=19.9 ~355m) from ARO Westfield (Feb. 7.02-05p3 at V=21.8-22.1)
K09B58J 2009 BJ58 (arc=23 days, H=19.1 ~513m) from Desert Moon Obs. (2009 Feb. 19.13-15p2)
K07M13K 2007 MK13 (arc=3 opp, H=20.0 ~339m) from Como Obs. (Dec. 28.09-10p3)
K04X04K 2004 XK4 (arc=2 opp, H=20.9 ~224m) from Desert Moon Obs. (Feb. 7.46-51p3)
K04T13R 2004 TR13 (arc=4 opp, H=18.5 ~676m) from Desert Moon Obs. (Feb. 7.41-43p3)
K04R84D 2004 RD84 (arc=2 opp, H=19.1 ~513m) from Madonna di Dossobuono Obs. (Feb. 7.90-91p3)
K02N16W 2002 NW16 (arc=2 opp, H=18.1 ~812m) from Peschiera del Garda Obs. (Feb. 7.75-78p3)
K02AC9J 2002 AJ129 (q=0.117 AU, arc=3 opp, H=18.5 ~676m) from Hamamatsu-Yuto Obs. (Feb. 6.79-80p4 & 7.58-59p2) and Capannoli Obs. (Feb. 7.97-98p3)
K01P09T 2001 PT9 (arc=2 opp, H=20.5 ~269m) from Desert Moon Obs. (Feb. 7.38-39p4)
N0549 230549 2003 BH from Balzaretto Obs. (Feb. 7.79-80p2)
86067 86067 1999 RM28 from Peschiera del Garda Obs. (Feb. 7.89-93p4), La Sagra Obs. (Feb. 7.90-93p3), and Capannoli Obs. (Feb. 7.95p3)
85839 85839 1998 YO4 from Capannoli Obs. (Feb. 7.00p3)
54789 54789 2001 MZ7 from Hamamatsu-Yuto Obs. (Feb. 6.68-69p8) and Peschiera del Garda Obs. (Feb. 7.85-88p4)
27346 27346 2000 DN8 from Hamamatsu-Yuto Obs. (Feb. 5.54-55p3)
09950 9950 ESA (1990 VB) from Desert Moon Obs. (Feb. 7.07-09p3)
01862 1862 Apollo (1932 HA) from La Sagra Obs. (Feb. 7.85-87p3)
01627 1627 Ivar (1929 SH) from Kurihara Obs. (Feb. 7.48p2)

MPEC 2010-C21 - "00:48 UT" - 2010 CN

K10C00N 2010 CN (small asteroid, H=23.4 ~71m) was discovered at 0800 UT on 6 Feb. by the Mt. Lemmon Survey (MLS), which observed it at Feb. 6.33-38p15, 6.43p4, and 7.15p4. The discovery was confirmed by Tzec Maun Obs. Mayhill (Feb. 6.45-49p4), Tenagra II Obs. (Feb. 6.48p3), ESA Optical Ground Station (ESA OGS) (Feb. 7.09-13p9), ARO Westfield (Feb. 7.23p3), Monte Baldo Obs. (Feb. 7.87-88p3), and Castelmartini Obs. (Feb. 7.91p3).

MPEC 2010-C20 - "00:45 UT" - 2010 CM

K10C00M 2010 CM (Q=4.017 AU, H=18.3 ~741m) was discovered at 0544 UT on 6 Feb. by MLS, which observed it at Jan. 12.36-38p4, Feb. 6.24-27p6, 6.32-37p7, and 7.12-13p4. The discovery was confirmed by ARO Westfield (Feb. 7.14-19p3).

MPEC 2010-C19 - "00:42 UT" - 2010 CL

K10C00L 2010 CL (small asteroid, H=25.0 ~34m) was discovered at 0517 UT on 6 Feb. by MLS, which observed it at Feb. 6.22-28p5, 6.32-33p3, 6.37p1, and 7.12p6.

Observers on 8 February '10

A total of 20 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 7 in MPECs 2010-C20, 2010-C21, 2010-C22 & 2010-C23 -- 2010 CN, 2010 CM, 2010 CA, C/2010 B2, 2010 AN61, 2010 AM60, 2009 WF
`A81`	Balzaretto Obs. in Italy, 2 in MPEC 2010-C22 -- 2002 XY38, 230549
`B09`	Capannoli Obs. in Italy, 3 in MPEC 2010-C22 -- 2002 AJ129, 86067, 85839
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2010-C21 -- 2010 CN
`C13`	Como Obs., 1 in MPEC 2010-C22 -- 2007 MK13
`448`	Desert Moon Obs. in New Mexico, 5 in MPEC 2010-C22 -- 2009 BJ58, 2004 XK4, 2004 TR13, 2001 PT9, 9950
`J04`	ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-C21 -- 2010 CN
`253`	Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2009 UN3
`379`	Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-C22 -- 2002 AJ129, 54789, 27346
`D95`	Kurihara Obs. in Japan, 1 in MPEC 2010-C22 -- 1627
`J75`	La Sagra Obs. in Spain, 2 in MPEC 2010-C22 -- 86067, 1862
`560`	Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2010-C22 -- 2010 AO60, 2004 RD84, 2002 XY38
`568`	Mauna Kea in Hawaii, 1 in MPEC 2010-C23 -- C/2010 B2
`A99`	Monte Baldo Obs. in Italy, 1 in MPEC 2010-C21 -- 2010 CN
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-C19, 2010-C20 & 2010-C21 -- 2010 CN, 2010 CM, 2010 CL
`A53`	Peschiera del Garda Obs. in Italy, 3 in MPEC 2010-C22 -- 2002 NW16, 86067, 54789
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-C23 -- C/2010 B2
`926`	Tenagra II Obs. in Arizona, 1 in MPEC 2010-C21 -- 2010 CN
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-C21 -- 2010 CN
`C51`	WISE in Earth polar orbit, 1 in MPEC 2010-C23 -- C/2010 B2

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

Impact Risk Monitoring on 8 February '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 CA	NEODyS	1425	2019-2040	14	5.19e-05	-3.42	-3.80	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/07.219."
2010 CA	JPL Sentry	1424	2019-2036	13	5.4e-05	-3.40	-3.76	0	JPL: "Analysis based on 24 observations spanning 2.0217 days (2010-Feb-05.19638 to 2010-Feb-07.218058)." Diameter approximately 0.042 km. from mean, weighted H=24.6.

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 8 February '10

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

2358	Noted Radar Astrometry database update - see above
2006	Grabbed MPEC 2010-C23 - Comet P/2010 B2 (WISE) - see above
1425	Noted that NEODyS has updated its 2010 CA risk assessment - see above
1424	Noted that JPL Sentry has updated its 2010 CA risk assessment - see above Grabbed MPEC 2010-C22 - Daily Orbit Update - see above
0056	Grabbed MPEC 2010-C19 - 2010 CL - see above Grabbed MPEC 2010-C20 - 2010 CM - see above Grabbed MPEC 2010-C21 - 2010 CN - see above

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