2009-02-16 Tracking News

Contents on 16 February '09

Radar Astrometry -- two objects
IAU Minor Planet Center
- NEOCP Activity -- four listings: 4 updated
- New MPECs -- seven MPECs
Observers -- 27 observing facilities
Impact Risk Monitoring -- three 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.

Radar Astrometry on 16 February '09

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 2259 UTC when the database was dated 16 Feb.

2008 EE5 from Arecibo (Feb. 11.96 velocity & 11.98 range)

Data update noted at 2358 UTC when the database was dated 16 Feb.

207398 2006 AS2 from Goldstone DSS-14 70m antenna (Feb. 7.40 velocity, 7.41 range, 8.92 velocity & 8.94 range) and Arecibo (Feb. 11.76 range, 12.70 range, 13.68 range, 14.69 range & 15.67 range) - see links

NEOCP Activity on 16 February '09

The MPC's NEO Confirmation Page has 4 listings: 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of twelve 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 16 February '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-D01 time-stamped "02:44 UT" - 2009 CQ5 - see below
MPEC 2009-D02 time-stamped "02:47 UT" - 2009 CR5 - see below
MPEC 2009-D03 time-stamped "02:49 UT" - 2009 CS5 - see below
MPEC 2009-D04 time-stamped "02:51 UT" - 2009 CT5 - see below
MPEC 2009-D05 time-stamped "02:55 UT" - 2009 CV5 - see below
MPEC 2009-D06 time-stamped "02:58 UT" - 2009 CU5 - see below
MPEC 2009-D07 time-stamped "07:06 UT" - Daily Orbit Update

<< DOU on 16 Feb. '09 >> MPEC 2009-D07 - "07:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09C02R 2009 CR2 (Q=4.982 AU, arc=11 days, H=16.5 ~1.70 km) from Cyclops Obs. (Feb. 14.78-80p3)
Observations of recently (no longer) risk-listed objects
K09C00V 2009 CV (small asteroid, arc=13 days, H=24.2 ~49m) from Wildberg Obs. (Feb. 15.95-96p8)
Observations of small asteroids (H>22.0)
K09C02X 2009 CX2 (arc=12 days, H=23.9 ~56m) from Astronomical Research Obs. (ARO) (Feb. 15.33-35p3)
K03W25P 2003 WP25 (arc=6 opp, H=24.2 ~49m) from Bergen-Enkheim Obs. (Feb. 15.02-06p2 & 15.13p1)
Observations of other objects
K09C05P 2009 CP5 (arc=1 day, H=21.2 ~195m) from ARO (Feb. 15.23-24p4)
K09C05O 2009 CO5 (arc=13 days, H=21.7 ~155m) from ARO (Feb. 15.22-23p3) and LINEAR (Feb. 15.24-29p5)
K09B81H 2009 BH81 (i=45.1°, arc=15 days, H=19.5 ~426m) from ARO (Feb. 15.37p3)
K09B77D 2009 BD77 (arc=16 days, H=20.4 ~282m) from ARO (Feb. 15.38p3)
K08U95C 2008 UC95 (arc=109 days, H=18.6 ~645m) from Naef Obs. (Feb. 15.83p1)
K08TF7E 2008 TE157 (Q=4.444 AU, arc=136 days, H=20.8 ~234m) from LINEAR (Feb. 15.24-28p5)
K08E05E 2008 EE5 (i=44.8°, arc=2 opp, H=19.7 ~389m) from Peschiera del Garda Obs. (Feb. 15.77-78p5) and Thompsonville Obs. (Feb. 16.05-07p6)
K08E00E 2008 EE (arc=2 opp, H=19.7 ~389m) from Peschiera del Garda Obs. (Feb. 15.96-98p4)
K05YG5S 2005 YS165 (arc=2 opp, H=17.5 ~1.07 km) from Ametlla del Valles Obs. (Feb. 14.19-23p3)
K00B19L 2000 BL19 (Q=4.472 AU, arc=2 opp, H=19.9 ~355m) from Thompsonville Obs. (Feb. 16.10-11p6)
J99A10Q 1999 AQ10 (arc=4 opp, H=20.4 ~282m) from program code "^" (28) via RAS Obs. Mayhill (Feb. 14.34p3)
K6359 206359 2003 QM47 from Peschiera del Garda Obs. (Feb. 15.88-92p3)
J8856 198856 2005 LR3 from LINEAR (Feb. 15.43-48p4)
G2080 162080 1998 DG16 from the Catalina Sky Survey (CSS) (Feb. 15.47-51p4)
F3953 153953 2002 AD9 from LINEAR (Feb. 15.32-37p5)
E3651 143651 2003 QO104 from LINEAR (Feb. 15.36-40p5)
D8175 138175 2000 EE104 from CSS (Feb. 15.16-18p4)
D7925 137925 2000 BJ19 from CSS (Feb. 15.29-30p4), LINEAR (Feb. 15.31-35p4), and El Guijo Obs. (Feb. 16.01-02p3)
D7805 137805 1999 YK5 from LINEAR (Feb. 15.10-14p4)
A1873 101873 1999 NC5 from Mirasteilas Obs. (Feb. 15.91-92p3)
89355 89355 2001 VS78 from LINEAR (Feb. 15.16-20p4)
25916 25916 2001 CP44 from CSS (Feb. 15.27-28p4), LINEAR (Feb. 15.31-35p3), and Naef Obs. (Feb. 15.83-86p2)
10302 10302 1989 ML from CSS (Feb. 15.44-46p4)
04179 4179 Toutatis (1989 AC) from Calarreona Obs. (Feb. 14.89p3)
01863 1863 Antinous (1948 EA) from LINEAR (Feb. 15.26-31p5)

MPEC 2009-D06 - "02:58 UT" - 2009 CU5

K09C05U 2009 CU5 (i=41.0°, q=1.941 AU, H=17.5 ~1.07 km) was discovered at 2311 UT on 14 Feb. by La Sagra Obs., which observed it at Feb. 14.97-99p3. The discovery was confirmed by Calar Alto Obs. (Feb. 15.12p3 & 15.82-83p3), Sandlot Obs. (Feb. 15.25-26p3), ARO (Feb. 15.30-31p3), San Marcello Pistoiese Obs. (Feb. 15.77p3), and Libbiano Obs. (Feb. 15.92-93p3).

MPEC 2009-D05 - "02:55 UT" - 2009 CV5

K09C05V 2009 CV5 (risk-listed, Earth MOID=2.6 LD, H=24.7 ~39m) was discovered at 0625 UT on 15 Feb. by CSS, which observed it at Feb. 15.27-31p5, 15.36p4, and 15.52p4. The discovery was confirmed by LINEAR (Feb. 15.31-34p4), San Marcello Pistoiese Obs. (Feb. 15.78p3), Calar Alto Obs. (Feb. 15.86p3 & 15.94p3), and Libbiano Obs. (Feb. 15.90-91p3).

MPEC 2009-D04 - "02:51 UT" - 2009 CT5

K09C05T 2009 CT5 (q=0.279 AU, H=18.6 ~645m) was discovered at 1838 UT on 14 Feb. by Crni Vrh Obs., which observed it at Feb. 14.78-80p4 and 15.74p4. The discovery was confirmed by Calar Alto Obs. (Feb. 14.84p3, 14.94p3 & 15.80-81p3), Schiaparelli Obs. (Feb. 14.87-88p3), ARO (Feb. 15.21p3), Tiki Obs. (Feb. 15.27-29p2), Gnosca Obs. (Feb. 15.75-77p3), San Marcello Pistoiese Obs. (Feb. 15.76p3), and Balzaretto Obs. (Feb. 15.78-79p3).

MPEC 2009-D03 - "02:49 UT" - 2009 CS5

K09C05S 2009 CS5 (H=19.6 ~407m) was discovered at 0434 UT on 14 Feb. by the Spacewatch 0.9m telescope, which observed it at Feb. 14.19-22p3. The discovery was confirmed by Calar Alto Obs. (Feb. 14.82p3 & 15.82p3) and ARO (Feb. 15.25-27p3).

MPEC 2009-D02 - "02:47 UT" - 2009 CR5

K09C05R 2009 CR5 (borderline-small, H=22.0 ~135m) was discovered at 0312 UT on 14 Feb. by Spacewatch 0.9m, which observed it at Feb. 14.13-17p3. The discovery was confirmed by Calar Alto Obs. (Feb. 14.81p3 & 15.81p3) and ARO (Feb. 15.21-22p3).

MPEC 2009-D01 - "02:44 UT" - 2009 CQ5

K09C05Q 2009 CQ5 (risk-listed, IEO, Q=0.996 AU, H=17.6 ~1.02 km) was discovered at 0217 UT on 14 Feb. by CSS, which observed it at Feb. 14.10-14p7. The discovery was confirmed by Schiaparelli Obs. (Feb. 14.76-78p3), Calar Alto Obs. (Feb. 14.79-80p3 & 15.80p3), and San Marcello Pistoiese Obs. (Feb. 15.75p3).

Observers on 16 February '09

A total of 27 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B37`	Ametlla del Valles Obs. in Spain, 1 in MPEC 2009-D07 -- 2005 YS165
`251`	Arecibo in Puerto Rico, 2 in radar -- 2008 EE5, 207398
`H55`	Astronomical Research Obs. (ARO) in Illinois, 9 in MPECs 2009-D02, 2009-D03, 2009-D04, 2009-D06 & 2009-D07 -- 2009 CX2, 2009 CU5, 2009 CT5, 2009 CS5, 2009 CR5, 2009 CP5, 2009 CO5, 2009 BH81, 2009 BD77
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2009-D04 -- 2009 CT5
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-D07 -- 2003 WP25
`493`	Calar Alto Obs. in Spain, 6 in MPECs 2009-D01, 2009-D02, 2009-D03, 2009-D04, 2009-D05 & 2009-D06 -- 2009 CV5, 2009 CU5, 2009 CT5, 2009 CS5, 2009 CR5, 2009 CQ5
`J79`	Calarreona Obs. in Spain, 1 in MPEC 2009-D07 -- 4179
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2009-D01, 2009-D05 & 2009-D07 -- 2009 CV5, 2009 CQ5, 25916, 162080, 138175, 137925, 10302
`106`	Crni Vrh Obs. in Slovenia, 1 in MPEC 2009-D04 -- 2009 CT5
`B84`	Cyclops Obs. in The Netherlands, 1 in MPEC 2009-D07 -- 2009 CR2
`J27`	El Guijo Obs. in Spain, 1 in MPEC 2009-D07 -- 137925
`143`	Gnosca Obs. in Switzerland, 1 in MPEC 2009-D04 -- 2009 CT5
`253`	Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 207398
`704`	LINEAR in New Mexico, 11 in MPECs 2009-D05 & 2009-D07 -- 2009 CV5, 2009 CO5, 2008 TE157, 89355, 25916, 198856, 153953, 143651, 137925, 137805, 1863
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-D06 -- 2009 CU5
`B33`	Libbiano Obs. in Italy, 2 in MPECs 2009-D05 & 2009-D06 -- 2009 CV5, 2009 CU5
`B67`	Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-D07 -- 101873
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2009-D07 -- 2008 UC95, 25916
`A53`	Peschiera del Garda Obs. in Italy, 3 in MPEC 2009-D07 -- 2008 EE5, 2008 EE, 206359
`H06^`	program code "^" (28) via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-D07 -- 1999 AQ10
`104`	San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2009-D01, 2009-D04, 2009-D05 & 2009-D06 -- 2009 CV5, 2009 CU5, 2009 CT5, 2009 CQ5
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-D06 -- 2009 CU5
`204`	Schiaparelli Obs. in Italy, 2 in MPECs 2009-D01 & 2009-D04 -- 2009 CT5, 2009 CQ5
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2009-D02 & 2009-D03 -- 2009 CS5, 2009 CR5
`H53`	Thompsonville Obs. in Illinois, 2 in MPEC 2009-D07 -- 2008 EE5, 2000 BL19
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2009-D04 -- 2009 CT5
`198`	Wildberg Obs. in Germany, 1 in MPEC 2009-D07 -- 2009 CV

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

Impact Risk Monitoring on 16 February '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 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 CV5	NEODyS	1533	2035-2075	4	8.65e-07	-5.89	-6.01	0	NEODyS: "Based on 29 optical observations (of which 1 are rejected as outliers) from 2009/02/15.269 to 2009/02/15.939."
2009 CV5	JPL Sentry	0605	2093-2108	2	9.1e-08	-7.27	-7.27	0	JPL: "Analysis based on 29 observations spanning .67021 days (2009-Feb-15.26778 to 2009-Feb-15.93799)." Diameter approximately 0.039 km. from mean, weighted H=24.7.

2009 CQ5	NEODyS	1533	2013-2089	33	1.35e-07	-2.67	-2.99	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/02/14.096 to 2009/02/15.802."
2009 CQ5	JPL Sentry	0605	2013-2108	132	3.1e-07	-2.40	-2.68	0	JPL: "Analysis based on 19 observations spanning 1.7053 days (2009-Feb-14.09547 to 2009-Feb-15.80079)." Diameter approximately 1.100 km. from mean, weighted H=17.5.

2009 CR2	JPL Sentry	1533	2024	1	1.3e-10	-5.07	-5.07	0	JPL: "Analysis based on 30 observations spanning 11.496 days (2009-Feb-03.30293 to 2009-Feb-14.79845)." Diameter approximately 1.700 km. from mean, weighted H=16.5.
2009 CR2	NEODyS	1533	R E M O V E D						-

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 16 February '09

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

2358	Noted Radar Astrometry database update - see above
2259	Noted Radar Astrometry database update - see above
1533	Noted that NEODyS has posted 2009 CQ5 as an impact risk - see above Noted that JPL Sentry has updated its 2009 CR2 risk assessment - see above Noted that NEODyS has removed 2009 CR2 as an impact risk - see above Noted that NEODyS has posted 2009 CV5 as an impact risk - see above Grabbed MPEC 2009-D07 - Daily Orbit Update - see above
0607	Grabbed MPEC 2009-D01 - 2009 CQ5 - see above Grabbed MPEC 2009-D02 - 2009 CR5 - see above Grabbed MPEC 2009-D03 - 2009 CS5 - see above Grabbed MPEC 2009-D04 - 2009 CT5 - see above Grabbed MPEC 2009-D05 - 2009 CV5 - see above Grabbed MPEC 2009-D06 - 2009 CU5 - see above
0605	Noted that JPL Sentry has posted 2009 CQ5 as an impact risk - see above Noted that JPL Sentry has posted 2009 CV5 as an impact risk - see above

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