2008-05-30 Tracking News

Contents on 30 May '08

IAU Minor Planet Center
- NEOCP Activity -- three listings: 3 updated
- New MPECs -- eight MPECs
Observers -- fifteen 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

NOTE: These news page will update less often and at sometimes irregular intervals from May 31st through approximately June 7th.

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 30 May '08

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three updated listings. All of these 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 30 May '08

Minor Planet Electronic Circulars

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

MPEC 2008-K57 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-K58 time-stamped "12:40 UT" - 2008 KZ5 - see below
MPEC 2008-K59 time-stamped "12:44 UT" - 2008 KA6 - see below
MPEC 2008-K60 time-stamped "12:47 UT" - 2008 KB6 - see below
MPEC 2008-K61 time-stamped "12:50 UT" - 2008 KC6 - see below
MPEC 2008-K62 time-stamped "12:54 UT" - 2008 KD6 - see below
MPEC 2008-K63 time-stamped "13:00 UT" - 2008 KE6 - see below
MPEC 2008-K64 time-stamped "17:54 UT" - 2008 KF6

MPEC 2008-K64 - "17:54 UT" - 2008 KF6

K08K06F 2008 KF6 (risk-listed, H=23.5 ~68m) was discovered at 1451 UT on 30 May by the Siding Spring Survey (SSS), which observed it at May 30.62-67p5 and 30.71p2. The discovery was confirmed by Mt. John Obs. (May 30.68p4).

MPEC 2008-K63 - "13:00 UT" - 2008 KE6

K08K06E 2008 KE6 (Earth MOID=8.7 LD, H=20.6 ~257m) was discovered at 1023 UT on 29 May by the Mt. Lemmon Survey (MLS), which observed it at May 29.43-47p7 and 30.42p4. The discovery was confirmed by Ovidiu Vaduvescu via Cerro Tololo Inter-American Obs. (CTIO) (May 30.35p6) and Jim Young via Table Mtn. Obs. (May 30.41-42p4).

MPEC 2008-K62 - "12:54 UT" - 2008 KD6

K08K06D 2008 KD6 (H=19.4 ~446m) was discovered at 1017 UT on 29 May by MLS, which observed it at May 29.43-47p7 and 30.42p4.

MPEC 2008-K61 - "12:50 UT" - 2008 KC6

K08K06C 2008 KC6 (small asteroid, Earth MOID=7.3 LD, H=25.1 ~32m) was discovered at 0757 UT on 29 May by MLS, which observed it at May 29.33-39p8 and 30.31p4. The discovery was confirmed by Mt. John Obs. (May 30.45p4).

MPEC 2008-K60 - "12:47 UT" - 2008 KB6

K08K06B 2008 KB6 (small asteroid, H=24.3 ~47m) was discovered at 0704 UT on 29 May by MLS, which observed it at May 29.29-31p4, 29.36p2, and 30.32p2. The discovery was confirmed by Mt. John Obs. (May 30.47p3).

MPEC 2008-K59 - "12:44 UT" - 2008 KA6

K08K06A 2008 KA6 (small asteroid, H=23.3 ~74m) was discovered at 0627 UT on 29 May by MLS, which observed it at May 29.27-32p7 and 30.32p2. The discovery was confirmed by the Spacewatch 1.8m telescope (May 29.34-35p3) and Mt. John Obs. (May 30.42-43p3).

MPEC 2008-K58 - "12:40 UT" - 2008 KZ5

K08K05Z 2008 KZ5 (risk-listed, Earth MOID=0.5 LD, H=20.0 ~339m) was discovered at 0528 UT on 29 May by the Spacewatch 0.9m telescope, which observed it at May 29.23-26p3. The discovery was confirmed by Astronomical Research Obs. (ARO) (May 29.31-32p3), Jim Bedient via Faulkes Telescope North (May 29.36-37p3 & 30.34-35p3), Spacewatch 1.8m (May 29.36-37p3, 29.43p3 & 30.41-42p3), Sabino Canyon Obs. (May 29.38-39p2), and MLS (May 30.33-35p4).

<< DOU on 30 May '08 >> MPEC 2008-K57 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08K00T 2008 KT (small asteroid, arc=1 day, H=28.2 ~8m) from ARO (May 29.24-25p3)
K08K00O 2008 KO (small asteroid, arc=2 days, H=24.3 ~47m) from McCarthy Obs. (May 29.13p2), ARO (May 29.34-35p3), and Spacewatch 1.8m (May 29.44-45p2)
Observations of recently (no longer) risk-listed objects
K08H03O 2008 HO3 (Q=4.799 AU, arc=30 days, H=18.0 ~851m) from Bedient/Faulkes North (May 29.30-33p3)
K08H03D 2008 HD3 (i=52.0°, arc=31 days, H=19.8 ~371m) from ARO (May 29.17-19p3)
K04X29M 2004 XM29 (small asteroid, arc=2 opp, H=22.9 ~89m) from MLS (May 28.23p1)
Observations of small asteroids (H>22.0)
K08J26S 2008 JS26 (arc=15 days, H=23.6 ~65m) from ARO (May 29.36p3)
K08G20O 2008 GO20 (arc=50 days, H=22.3 ~117m) from ARO (May 29.09-10p3)
K08G03U 2008 GU3 (arc=52 days, H=22.3 ~117m) from ARO (May 29.18-21p3 at V=23.1-4)
K08G03R 2008 GR3 (arc=52 days, H=25.0 ~34m) from ARO (May 29.37-38p3)
K08F06S 2008 FS6 (arc=62 days, H=22.4 ~112m) from Vaduvescu/CTIO (May 30.18-22p5)
K08C22D 2008 CD22 (arc=110 days, H=22.1 ~129m) from ARO (May 29.14-17p3 at V=22.7-23.0)
Observations of almost-small asteroids (21.7<H<=22.0)
K08H00H 2008 HH (arc=28 days, H=22.0 ~135m) from David Tholen's team on Mauna Kea (May 20.49-50p2)
Observations of other objects
K08K02W 2008 KW2 (i=37.5°, arc=1 day, H=19.7 ~389m) from McCarthy Obs. (May 29.20-21p2 & 29.28p1), ARO (May 29.25-26p3), and Tiki Obs. (May 29.33-37p3)
K08K02V 2008 KV2 (arc=2 days, H=21.6 ~162m) from ARO (May 29.26-27p3), Tiki Obs. (May 29.48-50p4), and McCarthy Obs. (May 30.12-13p2)
K08K00Q 2008 KQ (arc=2 days, H=20.6 ~257m) from ARO (May 29.29-30p3)
K08K00P 2008 KP (i=61.2°, q=0.231 AU, arc=2 days, H=18.8 ~589m) from Bedient/Faulkes North (May 29.30-32p3)
K08J26R 2008 JR26 (arc=16 days, H=19.9 ~355m) from Spacewatch 0.9m (May 29.33-36p3)
K08J19W 2008 JW19 (arc=21 days, H=20.8 ~234m) from ARO (May 29.09p3)
K08J19S 2008 JS19 (arc=21 days, H=18.8 ~589m) from ARO (May 29.10-12p3) and Bedient/Faulkes North (May 29.30-32p3)
K08J14O 2008 JO14 (arc=22 days, H=21.1 ~204m) from ARO (May 29.21-24p3 at V=21.9-22.1)
K08J07Z 2008 JZ7 (Q=4.374 AU, arc=25 days, H=18.6 ~645m) from Vaduvescu/CTIO (May 29.99-02p11)
K08J00O 2008 JO (arc=28 days, H=18.3 ~741m) from Vaduvescu/CTIO (May 30.13-15p7)
K08J00N 2008 JN (q=0.212 AU, arc=28 days, H=20.7 ~245m) from MLS (May 29.21-23p4)
K08J00J 2008 JJ (i=44.6°, arc=29 days, H=19.2 ~490m) from Atlante Obs. (May 28.99-00p3) and ARO (May 29.35p4)
K08H03S 2008 HS3 (arc=29 days, H=21.6 ~162m) from Atlante Obs. (May 28.93-94p3)
K08H02F 2008 HF2 (arc=33 days, H=19.6 ~407m) from Vaduvescu/CTIO (May 30.16-17p8)
K08H02C 2008 HC2 (i=45.5°, arc=32 days, H=20.2 ~309m) from ARO (May 29.14-16p3)
K08E97Z 2008 EZ97 (arc=75 days, H=18.0 ~851m) from ARO (May 29.38-39p3)
K08E06O 2008 EO6 (arc=85 days, H=19.6 ~407m) from ARO (May 29.10-13p3 at V=22.4-6)
K08B22C 2008 BC22 (arc=139 days, H=19.8 ~371m) from SSS (May 29.59-60p4)
K08B18T 2008 BT18 (arc=3 opp, H=18.3 ~741m) from MLS (May 29.19-21p4)
K07P08A 2007 PA8 (Q=4.701 AU, arc=4 opp, H=16.1 ~2.04 km, q=0.958 AU) from MLS (May 29.15-16p4)
K07G03S 2007 GS3 (arc=2 opp, H=19.4 ~446m) from MLS (May 29.17-18p4)
K06F00X 2006 FX (arc=3 opp, H=20.0 ~339m) from ARO (May 29.31p1 at V=22.4)
K04T18B 2004 TB18 (arc=2 opp, H=17.7 ~977m) from ARO (May 29.35-38p3 at V=21.9-22.1)
K04J06G 2004 JG6 (IEO, q=0.298 AU, Q=0.973 AU, arc=2 opp, H=18.9 ~562m) from MLS (May 29.17-18p8)
K04H62E 2004 HE62 (Q=4.005 AU, arc=4 opp, H=17.3 ~1.17 km) from SSS (May 29.72-76p4)
K01XQ6W 2001 XW266 (arc=3 opp, H=19.4 ~446m) from Tholen et al. (May 20.44p3) and Bedient/Faulkes North (May 29.36-37p3)
K00WA7M 2000 WM107 (Q=4.085 AU, arc=3 opp, H=18.9 ~562m) from MLS (May 29.37-38p4)
K00Q07W 2000 QW7 (arc=2 opp, H=19.8 ~371m) from MLS (May 29.24-26p4)
I5702 185702 1998 HK3 from SSS (May 29.50-51p3)
F4453 154453 2003 CJ11 from MLS (May 29.24-26p4 at V=21.2-22.1)
89958 89958 2002 LY45 from Spacewatch 0.9m (May 29.28-31p3)
85989 85989 1999 JD6 from MLS (May 29.22-23p3)
85839 85839 1998 YO4 from SSS (May 29.79-81p2)
65690 65690 1991 DG from MLS (May 29.20-21p4)
35107 35107 1991 VH from Gualba Obs. (May 27.91-92p2)
31210 31210 1998 BX7 from Spacewatch 0.9m (May 29.32p1)
07889 7889 1994 LX from Atlante Obs. (May 29.09-10p3)
01917 1917 Cuyo (1968 AA) from Atlante Obs. (May 29.16-21p3)

Observers on 30 May '08

Fifteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 21 in MPECs 2008-K57 & 2008-K58 -- 2008 KZ5, 2008 KW2, 2008 KV2, 2008 KT, 2008 KQ, 2008 KO, 2008 JW19, 2008 JS26, 2008 JS19, 2008 JO14, 2008 JJ, 2008 HD3, 2008 HC2, 2008 GU3, 2008 GR3, 2008 GO20, 2008 EZ97, 2008 EO6, 2008 CD22, 2006 FX, 2004 TB18
`J51`	Atlante Obs. in the Canary Islands, 4 in MPEC 2008-K57 -- 2008 JJ, 2008 HS3, 7889, 1917
`807,`	Ovidiu Vaduvescu via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPECs 2008-K57 & 2008-K63 -- 2008 KE6, 2008 JZ7, 2008 JO, 2008 HF2, 2008 FS6
`F654`	Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 5 in MPECs 2008-K57 & 2008-K58 -- 2008 KZ5, 2008 KP, 2008 JS19, 2008 HO3, 2001 XW266
`442`	Gualba Obs. in Spain, 1 in MPEC 2008-K57 -- 35107
`5682`	David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2008-K57 -- 2008 HH, 2001 XW266
`932`	McCarthy Obs. in Connecticut, 3 in MPEC 2008-K57 -- 2008 KW2, 2008 KV2, 2008 KO
`474`	Mt. John Obs. in New Zealand, 4 in MPECs 2008-K59, 2008-K60, 2008-K61 & 2008-K64 -- 2008 KF6, 2008 KC6, 2008 KB6, 2008 KA6
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2008-K57, 2008-K58, 2008-K59, 2008-K60, 2008-K61, 2008-K62 & 2008-K63 -- 2008 KZ5, 2008 KE6, 2008 KD6, 2008 KC6, 2008 KB6, 2008 KA6, 2008 JN, 2008 BT18, 2007 PA8, 2007 GS3, 2004 XM29, 2004 JG6, 2000 WM107, 2000 QW7, 85989, 65690, 154453
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-K58 -- 2008 KZ5
`E12`	Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2008-K57 & 2008-K64 -- 2008 KF6, 2008 BC22, 2004 HE62, 85839, 185702
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-K57 & 2008-K58 -- 2008 KZ5, 2008 JR26, 89958, 31210
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2008-K57, 2008-K58 & 2008-K59 -- 2008 KZ5, 2008 KO, 2008 KA6
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-K63 -- 2008 KE6
`F85`	Tiki Obs. in Tahiti, 2 in MPEC 2008-K57 -- 2008 KW2, 2008 KV2

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

Impact Risk Monitoring on 30 May '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 and our ephemerides page for a list of risk-listed objects under current observation.
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 KF6	JPL Sentry	2227	2023-2107	78	1.3e-07	-6.26	-7.16	0	JPL: "Analysis based on 11 observations spanning .09149 days (2008-May-30.61913 to 2008-May-30.71062)." Diameter approximately 0.069 km. from mean, weighted H=23.5.

2008 KZ5	JPL Sentry	1536	2013-2107	172	1.6e-06	-3.07	-3.44	0	JPL: "Analysis based on 27 observations spanning 1.1941 days (2008-May-29.22802 to 2008-May-30.42214)." Diameter approximately 0.350 km. from mean, weighted H=20.0.

2008 KX2	NEODyS	1404	2039	1	1.46e-10	-9.61	-9.61	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/05/29.266 to 2008/05/29.426."

2008 KT	NEODyS	1404	2017-2090	23	8.5e-05	-5.94	-6.10	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/05/28.255 to 2008/05/29.250."
2008 KT	JPL Sentry	1403	2019-2085	28	8.8e-05	-5.93	-6.09	0	JPL: "Analysis based on 19 observations spanning .99537 days (2008-May-28.25417 to 2008-May-29.249539)." Diameter approximately 0.008 km. from mean, weighted H=28.2.

2008 KO	NEODyS	1404	2049-2061	3	1.04e-06	-5.27	-5.60	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/05/27.377 to 2008/05/29.449."
2008 KO	JPL Sentry	1403	2049-2061	3	1.1e-06	-5.24	-5.57	0	JPL: "Analysis based on 25 observations spanning 2.0725 days (2008-May-27.3758 to 2008-May-29.44826)." Diameter approximately 0.047 km. from mean, weighted H=24.3.

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 30 May '08

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

2227	Noted that JPL Sentry has posted 2008 KF6 as an impact risk - see above
1933	Grabbed MPEC 2008-K64 - 2008 KF6 - see above
1536	Noted that JPL Sentry has posted 2008 KZ5 as an impact risk - see above
1404	Noted that NEODyS has updated its 2008 KO risk assessment - see above Noted that NEODyS has updated its 2008 KT risk assessment - see above
1403	Noted that JPL Sentry has updated its 2008 KO risk assessment - see above Noted that JPL Sentry has updated its 2008 KT risk assessment - see above Grabbed MPEC 2008-K57 - Daily Orbit Update - see above Grabbed MPEC 2008-K58 - 2008 KZ5 - see above Grabbed MPEC 2008-K59 - 2008 KA6 - see above Grabbed MPEC 2008-K60 - 2008 KB6 - see above Grabbed MPEC 2008-K61 - 2008 KC6 - see above Grabbed MPEC 2008-K62 - 2008 KD6 - see above Grabbed MPEC 2008-K63 - 2008 KE6 - see above
1402	Noted that NEODyS has posted 2008 KX2 as an impact risk - see above

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