2008-01-16 Tracking News

Contents on 16 January '08

IAU Minor Planet Center
- NEOCP Activity -- five listings: 5 updated
- New MPECs -- eleven MPECs
- Observers -- 21 observing facilities
Impact Risk Monitoring -- five 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 this year 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 16 January '08

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had five updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of nineteen 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 January '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been eleven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-B01 time-stamped "07:09 UT" - Daily Orbit Update - see below
MPEC 2008-B02 time-stamped "17:14 UT" - 2008 AG33 - see below
MPEC 2008-B03 time-stamped "17:19 UT" - 2008 AH33 - see below
MPEC 2008-B04 time-stamped "17:26 UT" - 2008 AJ33 - see below
MPEC 2008-B05 time-stamped "17:29 UT" - 2008 AK33 - see below
MPEC 2008-B06 time-stamped "17:35 UT" - 2008 AL33 - see below
MPEC 2008-B07 time-stamped "17:39 UT" - 2008 AM33 - see below
MPEC 2008-B08 time-stamped "17:46 UT" - 2008 AN33 - see below
MPEC 2008-B09 time-stamped "20:19 UT" - Comets C/2007 V11, 2007 V12, 2007 V13, 2007 V14 (SOHO) - see below
MPEC 2008-B10 time-stamped "20:25 UT" - Comets C/2007 W4, 2007 W5, 2007 W6, 2007 W7, 2007 W8 (SOHO) - see below
MPEC 2008-B11 time-stamped "20:35 UT" - 2008 AP33

MPEC 2008-B11 - "20:35 UT" - 2008 AP33

K08A33P 2008 AP33 (small asteroid, H=23.8 ~59m) was discovered at 0514 UT on 15 Jan. by LINEAR, which observed it at Jan. 15.22-26p4. The discovery was confirmed by Great Shefford Obs. (Jan. 15.95-98p3) and Astronomical Research Obs. (ARO) (Jan. 16.10-11p3).

MPEC 2008-B10 - "20:25 UT" - Comets C/2007 W4, 2007 W5, 2007 W6, 2007 W7, 2007 W8 (SOHO)

CK07W080 C/2007 W8 from the LASCO Coronagraph 2 on the Solar & Heliospheric Obs. (SOHO) (Nov. 23.69-76p18)
CK07W070 C/2007 W7 from the LASCO Coronagraph 3 on the Solar & Heliospheric Obs. (SOHO) (Nov. 23.15-78p62, 23.82-93p12 & 23.97-99p4) and SOHO C2 (Nov. 23.97-10p30)
CK07W060 C/2007 W6 from SOHO C2 (Nov. 22.76-86p24)
CK07W050 C/2007 W5 from SOHO C2 (Nov. 19.31-39p12)
CK07W040 C/2007 W4 from SOHO C3 (Nov. 19.11-43p30)

MPEC 2008-B09 - "20:19 UT" - Comets C/2007 V11, 2007 V12, 2007 V13, 2007 V14 (SOHO)

CK07V140 C/2007 V14 from SOHO C2 (Nov. 14.64-74p16)
CK07V130 C/2007 V13 from SOHO C2 (Nov. 13.43-53p14)
CK07V120 C/2007 V12 from SOHO C2 (Nov. 11.12-18p10)
CK07V110 C/2007 V11 from SOHO C3 (Nov. 10.60-74p16, 10.78-93p16, 10.97-03p8, 11.07-18p12, 11.22-28p8, 11.32-40p10 & 11.47-86p38) and SOHO C2 (Nov. 11.84-93p14 & 11.98-99p4)

MPEC 2008-B08 - "17:46 UT" - 2008 AN33

K08A33N 2008 AN33 (risk-listed, Q=5.120 AU, H=18.8 ~589m) was discovered at 1101 UT on 15 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 15.46-52p8. The discovery was confirmed by Farpoint Obs. (Jan. 15.51p6), Great Shefford Obs. (Jan. 16.15-17p3), and the Mt. Lemmon Survey (MLS) (Jan. 16.51-52p4).

MPEC 2008-B07 - "17:39 UT" - 2008 AM33

K08A33M 2008 AM33 (H=21.2 ~195m) was discovered at 1046 UT on 15 Jan. by the MLS, which observed it at Jan. 15.45-53p12 and 16.50p4. The discovery was confirmed by Great Shefford Obs. (Jan. 16.12-17p3).

MPEC 2008-B06 - "17:35 UT" - 2008 AL33

K08A33L 2008 AL33 (risk-listed, H=22.8 ~93m) was discovered at 0608 UT on 15 Jan. by Desert Eagle Obs., which observed it at Jan. 15.26-29p5. The discovery was confirmed by MLS (Jan. 16.20-22p4), the Spacewatch 1.8m telescope (Jan. 16.22-23p3), and Kanab Obs. (Jan. 16.34p1 & 16.39p1).

MPEC 2008-B05 - "17:29 UT" - 2008 AK33

K08A33K 2008 AK33 (risk-listed, Earth MOID=2.2 LD, H=20.6 ~257m) was discovered at 0155 UT on 15 Jan. by LINEAR, which observed it at Jan. 15.08-13p5. The discovery was confirmed by Great Shefford Obs. (Jan. 15.94p3), Alter Satzberg Obs. (Jan. 15.94-96p3), Spacewatch 1.8m (Jan. 16.10-11p3), and Jim Young via Table Mtn. Obs. (Jan. 16.21-23p4).

MPEC 2008-B04 - "17:26 UT" - 2008 AJ33

K08A33J 2008 AJ33 (Q=5.518 AU, H=20.0 ~339m) was discovered at 0227 UT on 14 Jan. by the MLS, which observed it at Jan. 14.10-11p3, 15.07-09p4, and 16.07-10p4. The discovery was confirmed by Spacewatch 1.8m (Jan. 14.26p3 & 15.22-23p3), ARO (Jan. 15.12-13p3), and Kanab Obs. (Jan. 16.10p1 & 16.14p1).

MPEC 2008-B03 - "17:19 UT" - 2008 AH33

K08A33H 2008 AH33 (i=36.7°, H=19.3 ~467m) was discovered at 1213 UT on 12 Jan. by the MLS, which observed it at Jan. 12.51-54p4 and 16.52-56p8. The discovery was confirmed by Farpoint Obs. (Jan. 15.47-48p3) and Great Shefford Obs. (Jan. 16.19-20p2).

MPEC 2008-B02 - "17:14 UT" - 2008 AG33

K08A33G 2008 AG33 (risk-listed, H=19.3 ~467m) was discovered at 1212 UT on 12 Jan. by the MLS, which observed it at Jan. 12.51-54p4, 15.49-52p4, and 16.52-53p4. The discovery was confirmed by Spacewatch 1.8m (Jan. 16.51-53p6).

<< DOU on 16 Jan. '08 >> MPEC 2008-B01 - "07:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K08A04F 2008 AF4 (arc=5 days, H=19.6 ~407m) from Hibiscus Obs. (Jan. 14.49-51p3) and Petit Jean Mtn. South Obs. (PJMSO) (Jan. 15.34-35p12)
Observations of recently (no longer) risk-listed objects
K08A00E 2008 AE (arc=14 days, H=19.6 ~407m) from LINEAR (Jan. 15.34-39p5)
K07Y56V 2007 YV56 (arc=11 days, H=21.0 ~214m) from Naef Obs. (Jan. 8.93-95p10)
K07Y02B 2007 YB2 (Q=5.247 AU, arc=28 days, H=18.2 ~776m) from PJMSO (Jan. 15.36-37p7) and CSS (Jan. 15.40-42p4)
Observations of small asteroids (H>22.0)
K08A03F 2008 AF3 (arc=5 days, H=26.1 ~20m) from Andrew Lowe via RAS Obs. Mayhill (Jan. 13.21p2 & 13.27p1)
K07V03H 2007 VH3 (arc=74 days, H=22.7 ~98m) from PJMSO (Jan. 15.24-26p6)
Observations of other objects
K08A28V 2008 AV28 (arc=27 days, H=19.4 ~446m) from the Spacewatch 0.9m telescope (Jan. 15.41-45p3)
K08A26U 2008 AU26 (arc=15 days, H=20.9 ~224m) from MLS (Jan. 12.40-42p4), Spacewatch 1.8m (Jan. 12.47p3), and Spacewatch 0.9m (Jan. 14.46-49p3)
K08A04H 2008 AH4 (i=65.9°, arc=6 days, H=21.5 ~170m) from Great Shefford Obs. (Jan. 16.09p3)
K08A01G 2008 AG1 (arc=8 days, H=21.2 ~195m) from Hibiscus Obs. (Jan. 14.44-48p3)
K07Y56O 2007 YO56 (arc=17 days, H=20.3 ~295m) from Spacewatch 1.8m (Jan. 16.14-15p3)
K07Y01F 2007 YF1 (Q=4.001 AU, arc=28 days, H=18.7 ~616m) from MLS (Jan. 13.33-36p4)
K07Y00K 2007 YK (arc=30 days, H=17.6 ~1.02 km) from MLS (Jan. 15.45-46p3)
K07W03Y 2007 WY3 (Q=4.938 AU, arc=54 days, H=18.2 ~776m) from Spacewatch 0.9m (Jan. 11.12-16p3)
K07VI8A 2007 VA188 (Q=4.853 AU, arc=44 days, H=19.4 ~446m) from New Millennium Obs. (Dec. 13.85p1)
K07VI3R 2007 VR183 (Q=4.353 AU, arc=119 days, H=17.4 ~1.12 km) from the Siding Spring Survey (SSS) (Jan. 11.54-56p4)
K07V04Q 2007 VQ4 (arc=3 opp, H=15.8 ~2.34 km, q=1.271 AU) from PJMSO (Jan. 15.35-36p6)
K07S06P 2007 SP6 (arc=2 opp, H=18.2 ~776m) from PJMSO (Jan. 15.33p5)
K07O03G 2007 OG3 (arc=180 days, H=18.3 ~741m) from MLS (Jan. 15.14-15p4)
K06V13Q 2006 VQ13 (arc=2 opp, H=20.1 ~323m) from Spacewatch 1.8m (Dec. 31.08-10p2)
K06K01T 2006 KT1 (arc=3 opp, H=16.6 ~1.62 km) from MLS (Jan. 11.35-37p4 & 11.44-50p8) and Spacewatch 0.9m (Jan. 15.30-34p3)
K05YC8Y 2005 YY128 (arc=3 opp, H=18.3 ~741m) from Spacewatch 0.9m (Jan. 13.14-18p3)
K05X01D 2005 XD1 (arc=2 opp, H=19.4 ~446m) from PJMSO (Jan. 15.23p5)
K05T45U 2005 TU45 (arc=3 opp, H=17.0 ~1.35 km) from LINEAR (Jan. 15.21-26p5 & 15.36-39p3), MLS (Jan. 15.25-27p4), and LONEOS (Jan. 15.31-38p4)
K04BC1G 2004 BG121 (arc=3 opp, H=18.9 ~562m) from MLS (Jan. 15.27-29p7)
K03W25L 2003 WL25 (Q=4.175 AU, arc=3 opp, H=16.7 ~1.55 km) from Spacewatch 0.9m (Jan. 11.08-11p3 & 13.10-12p3)
K03B35Q 2003 BQ35 (arc=2 opp, H=19.8 ~371m) from LINEAR (Jan. 15.18-20p3)
K03A01D 2003 AD1 (arc=3 opp, H=18.2 ~776m) from MLS (Jan. 1.53-55p4)
K02C26F 2002 CF26 (arc=5 opp, H=17.2 ~1.23 km) from CSS (Jan. 15.39-41p4)
K01J02U 2001 JU2 (arc=4 opp, H=19.4 ~446m) from Spacewatch 0.9m (Jan. 13.36-39p3)
K00YD7V 2000 YV137 (arc=4 opp, H=18.6 ~645m) from LINEAR (Jan. 15.27-33p4)
J93T02Q 1993 TQ2 (arc=2 opp, H=19.9 ~355m) from PJMSO (Jan. 15.30-31p5)
G3696 163696 2003 EB50 from CSS (Jan. 12.07-09p4)
G2038 162038 1996 DH from MLS (Jan. 15.43-44p4)
F2942 152942 2000 FN10 from CSS (Jan. 15.36-39p4)
D8947 138947 2001 BA40 from LINEAR (Jan. 15.08-13p5)
D8013 138013 2000 CN101 from CSS (Jan. 12.29-31p4)
D6793 136793 1997 AQ18 from PJMSO (Jan. 15.24p5)
96189 96189 1991 NT3 from LINEAR (Jan. 15.27-32p5)
90403 90403 2003 YE45 from PJMSO (Jan. 15.29p5)
85628 85628 1998 KV2 from CSS (Jan. 12.49-51p4)
68359 68359 2001 OZ13 from PJMSO (Jan. 15.29p5) and Montana Blanca Obs. (Jan. 15.95-96p2)
68063 68063 2000 YJ66 from MLS (Jan. 15.22-23p4)
66272 66272 1999 JW6 from CSS (Jan. 15.15-17p4)
34613 34613 2000 UR13 from LONEOS (Jan. 15.20-27p4)
25916 25916 2001 CP44 from Spacewatch 0.9m (Jan. 13.13-17p3)
21374 21374 1997 WS22 from CSS (Jan. 13.18-20p4)
20826 20826 2000 UV13 from CSS (Jan. 15.13-14p4)
13651 13651 1997 BR from Spacewatch 0.9m (Jan. 11.51-53p3)
11398 11398 1998 YP11 from CSS (Jan. 12.38-40p4)
07335 7335 1989 JA from Spacewatch 0.9m (Jan. 12.53-55p2)
07092 7092 Cadmus (1992 LC) from CSS (Jan. 12.09-11p4)
05131 5131 1990 BG from LINEAR (Jan. 15.14-19p5 & 15.28-31p4)
04450 4450 Pan (1987 SY) from Spacewatch 0.9m (Jan. 11.44-48p3 & 15.47-51p3)
03288 3288 Seleucus (1982 DV) from CSS (Jan. 12.26-28p4) and LINEAR (Jan. 15.21-26p5)
01036 1036 Ganymed (1924 TD) from Montana Blanca Obs. (Jan. 15.93-94p3)

Observers on 16 January '08

A total of 21 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2008-B05 -- 2008 AK33
`H55`	Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2008-B04 & 2008-B11 -- 2008 AP33, 2008 AJ33
`703`	Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2008-B01 & 2008-B08 -- 2008 AN33, 2007 YB2, 2002 CF26, 85628, 66272, 21374, 20826, 163696, 152942, 138013, 11398, 7092, 3288
`333`	Desert Eagle Obs. in Arizona, 1 in MPEC 2008-B06 -- 2008 AL33
`734`	Farpoint Obs. in Kansas, 2 in MPECs 2008-B03 & 2008-B08 -- 2008 AN33, 2008 AH33
`J95`	Great Shefford Obs. in England, 6 in MPECs 2008-B01, 2008-B03, 2008-B05, 2008-B07, 2008-B08 & 2008-B11 -- 2008 AP33, 2008 AN33, 2008 AM33, 2008 AK33, 2008 AH4, 2008 AH33
`F84`	Hibiscus Obs. in Tahiti, 2 in MPEC 2008-B01 -- 2008 AG1, 2008 AF4
`682`	Kanab Obs. in Utah, 2 in MPECs 2008-B04 & 2008-B06 -- 2008 AL33, 2008 AJ33
`704`	LINEAR in New Mexico, 10 in MPECs 2008-B01, 2008-B05 & 2008-B11 -- 2008 AP33, 2008 AK33, 2008 AE, 2005 TU45, 2003 BQ35, 2000 YV137, 96189, 138947, 5131, 3288
`699`	LONEOS in Arizona, 2 in MPEC 2008-B01 -- 2005 TU45, 34613
`J46`	Montana Blanca Obs. in the Canary Islands, 2 in MPEC 2008-B01 -- 68359, 1036
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 16 in MPECs 2008-B01, 2008-B02, 2008-B03, 2008-B04, 2008-B06, 2008-B07 & 2008-B08 -- 2008 AU26, 2008 AN33, 2008 AM33, 2008 AL33, 2008 AJ33, 2008 AH33, 2008 AG33, 2007 YK, 2007 YF1, 2007 OG3, 2006 KT1, 2005 TU45, 2004 BG121, 2003 AD1, 68063, 162038
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2008-B01 -- 2007 YV56
`A24`	New Millennium Obs. in Italy, 1 in MPEC 2008-B01 -- 2007 VA188
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2008-B01 -- 2008 AF4, 2007 YB2, 2007 VQ4, 2007 VH3, 2007 SP6, 2005 XD1, 1993 TQ2, 90403, 68359, 136793
`H066`	Andrew Lowe in Alberta via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-B01 -- 2008 AF3
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2008-B01 -- 2007 VR183
`2492`	LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-B09 & 2008-B10 -- C/2007 W8, C/2007 W7, C/2007 W6, C/2007 W5, C/2007 V14, C/2007 V13, C/2007 V12, C/2007 V11
`2493`	LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPECs 2008-B09 & 2008-B10 -- C/2007 W7, C/2007 W4, C/2007 V11
`691`	Spacewatch 0.9m telescope in Arizona, 11 in MPEC 2008-B01 -- 2008 AV28, 2008 AU26, 2007 WY3, 2006 KT1, 2005 YY128, 2003 WL25, 2001 JU2, 25916, 13651, 7335, 4450
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2008-B01, 2008-B02, 2008-B04, 2008-B05 & 2008-B06 -- 2008 AU26, 2008 AL33, 2008 AK33, 2008 AJ33, 2008 AG33, 2007 YO56, 2006 VQ13
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-B05 -- 2008 AK33

Impact Risk Monitoring on 16 January '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 AN33	JPL Sentry	2201	2042-2107	21	1.0e-08	-5.06	-5.99	0	JPL: "Analysis based on 21 observations spanning 1.0584 days (2008-Jan-15.4591 to 2008-Jan-16.51754)." Diameter approximately 0.570 km. from mean, weighted H=18.9.

2008 AL33	JPL Sentry	2354	2014-2100	41	7.3e-08	-5.59	-6.21	0	JPL: "Analysis based on 14 observations spanning 1.1304 days (2008-Jan-15.25594 to 2008-Jan-16.38632)." Diameter approximately 0.084 km. from mean, weighted H=23.0.

2008 AK33	JPL Sentry	2201	2010-2107	240	6.9e-07	-3.13	-3.59	0	JPL: "Analysis based on 18 observations spanning 1.1490 days (2008-Jan-15.08003 to 2008-Jan-16.22905)." Diameter approximately 0.269 km. from mean, weighted H=20.5.

2008 AG33	JPL Sentry	2038	2018-2107	66	3.6e-07	-3.68	-4.99	0	JPL: "Analysis based on 18 observations spanning 4.0236 days (2008-Jan-12.50891 to 2008-Jan-16.53246)." Diameter approximately 0.500 km. from mean, weighted H=19.2.

2008 AF4	JPL Sentry	1755	2078-2108	48	2.5e-05	-2.22	-2.37	1	JPL: "Analysis based on 74 observations spanning 4.9511 days (2008-Jan-10.39652 to 2008-Jan-15.34764)." Diameter approximately 0.413 km. from mean, weighted H=19.6.
2008 AF4	NEODyS	1518	2083-2090	14	1.84e-05	-2.34	-2.36	1	NEODyS: "Based on 75 optical observations (of which 1 are rejected as outliers) from 2008/01/10.397 to 2008/01/15.348. NOTE: The Virtual Impactor in 2089/01/09.478 in the table above is rated as Torino Scale 1."

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 January '08

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

2354	Noted that JPL Sentry has posted 2008 AL33 as an impact risk - see above
2201	Noted that JPL Sentry has posted 2008 AK33 as an impact risk - see above Noted that JPL Sentry has posted 2008 AN33 as an impact risk - see above
2038	Noted that JPL Sentry has posted 2008 AG33 as an impact risk - see above Grabbed MPEC 2008-B09 - Comets C/2007 V11, 2007 V12, 2007 V13, 2007 V14 (SOHO) - see above Grabbed MPEC 2008-B10 - Comets C/2007 W4, 2007 W5, 2007 W6, 2007 W7, 2007 W8 (SOHO) - see above Grabbed MPEC 2008-B11 - 2008 AP33 - see above
1755	Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above Grabbed MPEC 2008-B02 - 2008 AG33 - see above Grabbed MPEC 2008-B03 - 2008 AH33 - see above Grabbed MPEC 2008-B04 - 2008 AJ33 - see above Grabbed MPEC 2008-B05 - 2008 AK33 - see above Grabbed MPEC 2008-B06 - 2008 AL33 - see above Grabbed MPEC 2008-B07 - 2008 AM33 - see above Grabbed MPEC 2008-B08 - 2008 AN33 - see above
1518	Noted that NEODyS has updated its 2008 AF4 risk assessment - see above Grabbed MPEC 2008-B01 - Daily Orbit Update - see above

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