2008-01-12 Tracking News

Contents on 12 January '08

IAU Minor Planet Center
- NEOCP Activity -- 13 listings: 6 new, 7 updated
- New MPECs -- seven MPECs
- Observers -- seventeen 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 12 January '08

The MPC's NEO Confirmation Page has 13 listings: 6 new, 7 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and seven updated listings. Of these, twelve were "one nighters." So far The Tracking News has counted a total of 30 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 12 January '08

Minor Planet Electronic Circulars

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

MPEC 2008-A52 time-stamped "07:08 UT" - Daily Orbit Update - see below
MPEC 2008-A53 time-stamped "20:21 UT" - 2008 AS28 - see below
MPEC 2008-A54 time-stamped "20:24 UT" - 2008 AT28 - see below
MPEC 2008-A55 time-stamped "20:27 UT" - 2008 AU28 - see below
MPEC 2008-A56 time-stamped "20:29 UT" - 2008 AV28 - see below
MPEC 2008-A57 time-stamped "20:32 UT" - 2008 AW28 - see below
MPEC 2008-A58 time-stamped "22:30 UT" - 2008 AU26

MPEC 2008-A58 - "22:30 UT" - 2008 AU26

K08A26U 2008 AU26 (H=21.0 ~214m) was discovered at 1039 UT on 10 Jan. by the Spacewatch 0.9m telescope, which observed it at Jan. 10.44-48p3. The discovery was confirmed by the Mt. Lemmon Survey (MLS) (Dec. 30.52-55p4 & Jan. 11.41-44p4), the Spacewatch 1.8m telescope (Jan. 11.38-39p3), and Junk Bond Obs. (Jan. 12.41-47p4).

MPEC 2008-A57 - "20:32 UT" - 2008 AW28

K08A28W 2008 AW28 (small asteroid, H=22.1 ~129m) was discovered at 0945 UT on 11 Jan. by the MLS, which observed it at Jan. 11.35-46p11 at V=22.7. The discovery was confirmed by Spacewatch 1.8m (Jan. 12.50-51p3).

MPEC 2008-A56 - "20:29 UT" - 2008 AV28

K08A28V 2008 AV28 (H=19.4 ~446m) was discovered at 0921 UT on 11 Jan. by the Spacewatch 0.9m, which observed it at Jan. 11.39-43p3. The discovery was confirmed by MLS (Dec. 19.43-45p3 & Jan. 12.32-35p4), Astronomical Research Obs. (ARO) (Jan. 12.33-34p3), and Spacewatch 1.8m (Jan. 12.45-46p3).

MPEC 2008-A55 - "20:27 UT" - 2008 AU28

K08A28U 2008 AU28 (small asteroid, Earth MOID=4.1 LD, H=24.9 ~35m) was discovered at 0726 UT on 11 Jan. by the MLS, which observed it at Jan. 11.23-25p3, 11.31-33p4, and 12.26-28p4. The discovery was confirmed by KLENOT (Jan. 11.72-73p11), Magdalena Ridge Obs. (MRO) (Jan. 12.11p5), ARO (Jan. 12.16p3), and Grasslands Obs. (Jan. 12.21p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 5.3 LD on 19 Jan.

MPEC 2008-A54 - "20:24 UT" - 2008 AT28

K08A28T 2008 AT28 (H=18.3 ~741m) was discovered at 1039 UT on 10 Jan. by the Spacewatch 0.9m, which observed it at Jan. 10.44-48p3. The discovery was confirmed by Spacewatch 1.8m (Jan. 11.39p2 & 12.46-47p3), MLS (Jan. 11.41-44p4 & 12.40-42p4), Farpoint Obs. (Jan. 11.47-48p3), and ARO (Jan. 12.30-31p3).

MPEC 2008-A53 - "20:21 UT" - 2008 AS28

K08A28S 2008 AS28 (risk-listed, Q=5.254 AU, Earth MOID=4.1 LD, H=19.4 ~446m) was discovered at 0314 UT on 10 Jan. by the MLS, which observed it at Jan. 10.14-21p8, 11.14-16p4, and 12.18-19p4. The discovery was confirmed by Farpoint Obs. (Jan. 11.20-23p3) and Spacewatch 1.8m (Jan. 11.21-22p3).

<< DOU on 12 Jan. '08 >> MPEC 2008-A52 - "07:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K07Y56S 2007 YS56 (small asteroid, arc=11 days, H=25.7 ~25m) from Spacewatch 1.8m (Jan. 11.23-30p9 at V=22.3-23)
K07Y56Q 2007 YQ56 (arc=12 days, H=19.8 ~371m) from Spacewatch 1.8m (Jan. 11.15-16p3 & 12.18-19p3) and KLENOT (Jan. 11.76p6)
K07VI4K 2007 VK184 (almost small, arc=60 days, H=22.0 ~135m) from MRO (Jan. 11.11-15p2 at R=23.3-5)
Observations of recently (no longer) risk-listed objects
K07Y56M 2007 YM56 (small asteroid, arc=12 days, H=22.3 ~117m) from Spacewatch 1.8m (Jan. 11.35-36p3)
K07Y00Z 2007 YZ (arc=25 days, H=19.7 ~389m) from Petit Jean Mtn. South Obs. (PJMSO) (Jan. 11.24-25p6)
K07X16J 2007 XJ16 (arc=37 days, H=18.8 ~589m) from Spacewatch 1.8m (Jan. 11.33-34p2)
Observations of small asteroids (H>22.0)
K07V03H 2007 VH3 (arc=70 days, H=22.7 ~98m) from PJMSO (Jan. 11.26-27p5)
Observations of other objects
K08A00D 2008 AD (arc=11 days, H=20.1 ~323m) from KLENOT (Jan. 11.78p7)
K07Y56O 2007 YO56 (arc=12 days, H=20.2 ~309m) from Spacewatch 1.8m (Jan. 11.36-37p2)
K07Y01F 2007 YF1 (Q=4.001 AU, arc=26 days, H=18.7 ~616m) from PJMSO (Jan. 11.33-34p6)
K07W55F 2007 WF55 (arc=41 days, H=19.1 ~513m) from PJMSO (Jan. 11.27-28p5)
K07T19A 2007 TA19 (arc=95 days, H=19.6 ~407m) from Spacewatch 1.8m (Jan. 12.12-13p3)
K07S06P 2007 SP6 (arc=2 opp, H=18.2 ~776m) from PJMSO (Jan. 11.35p4)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from LINEAR (Jan. 11.19-25p5)
K06K01T 2006 KT1 (arc=3 opp, H=16.6 ~1.62 km) from MLS (Jan. 10.37-39p4) and Spacewatch 0.9m (Jan. 11.29-33p3)
K05X08K 2005 XK8 (arc=2 opp, H=19.8 ~371m) from MLS (Jan. 11.20-21p3)
K05X01D 2005 XD1 (arc=2 opp, H=19.3 ~467m) from PJMSO (Jan. 11.25-26p5)
K05W56J 2005 WJ56 (arc=3 opp, H=18.1 ~812m) from Huelva Obs. (Jan. 10.82-85p4), Malaga Obs. (Jan. 10.88-89p4), and Eschenberg Obs. (Jan. 11.72p7)
K05T45U 2005 TU45 (arc=3 opp, H=17.0 ~1.35 km) from PJMSO (Jan. 11.34-35p5)
K05C36Z 2005 CZ36 (arc=3 opp, H=17.5 ~1.07 km) from MLS (Jan. 11.28-30p4)
K03X00L 2003 XL (arc=4 opp, H=17.3 ~1.17 km) from the Catalina Sky Survey (CSS) (Jan. 11.16-18p4)
K03A01D 2003 AD1 (arc=3 opp, H=18.2 ~776m) from CSS (Jan. 11.43-45p4)
J98B10B 1998 BB10 (arc=5 opp, H=20.4 ~282m) from Spacewatch 1.8m (Jan. 12.11-12p3)
H0903 170903 2004 WS2 from LONEOS (Jan. 11.08-16p4)
F4589 154589 2003 MX2 from LINEAR (Jan. 11.35-38p4)
E4922 144922 2005 CK38 from CSS (Jan. 11.36-39p4)
E4411 144411 2004 EW9 from Spacewatch 0.9m (Jan. 11.08-10p3)
D8947 138947 2001 BA40 from PJMSO (Jan. 11.29-31p4)
D7427 137427 1999 TF211 from CSS (Jan. 11.52-53p3)
D7078 137078 1998 XZ4 from Spacewatch 1.8m (Jan. 11.41-43p3)
D6793 136793 1997 AQ18 from LINEAR (Jan. 11.21-26p5) and PJMSO (Jan. 11.28-29p5)
90403 90403 2003 YE45 from Jurassien-Vicques Obs. (Jan. 10.92p1 & 10.96p1) and PJMSO (Jan. 11.32-33p5)
85953 85953 1999 FK21 from MLS (Jan. 11.52-54p4)
68359 68359 2001 OZ13 from PJMSO (Jan. 11.31p5)
65706 65706 1992 NA from CSS (Jan. 11.29-32p4) and LINEAR (Jan. 11.33-38p5)
40267 40267 1999 GJ4 from LINEAR (Jan. 11.46-51p5) and CSS (Jan. 11.47-49p4)
08034 8034 Akka (1992 LR) from MLS (Jan. 11.14-16p4)
07889 7889 1994 LX from CSS (Jan. 11.53-54p4)
05587 5587 1990 SB from LINEAR (Jan. 11.39-44p4)
05131 5131 1990 BG from PJMSO (Jan. 11.32p5)
03691 3691 Bede (1982 FT) from LINEAR (Jan. 11.46-51p5) and CSS (Jan. 11.47-49p4)
01862 1862 Apollo (1932 HA) from LINEAR (Jan. 11.28-33p5) and CSS (Jan. 11.29-32p3)

Observers on 12 January '08

Seventeen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 3 in MPECs 2008-A54, 2008-A55 & 2008-A56 -- 2008 AV28, 2008 AU28, 2008 AT28
`703`	Catalina Sky Survey (CSS) in Arizona, 9 in MPEC 2008-A52 -- 2003 XL, 2003 AD1, 65706, 40267, 144922, 137427, 7889, 3691, 1862
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2008-A52 -- 2005 WJ56
`734`	Farpoint Obs. in Kansas, 2 in MPECs 2008-A53 & 2008-A54 -- 2008 AT28, 2008 AS28
`651`	Grasslands Obs. in Arizona, 1 in MPEC 2008-A55 -- 2008 AU28
`J37`	Huelva Obs. in Spain, 1 in MPEC 2008-A52 -- 2005 WJ56
`701`	Junk Bond Obs. in Arizona, 1 in MPEC 2008-A58 -- 2008 AU26
`185`	Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2008-A52 -- 90403
`246`	KLENOT in the Czech Republic, 3 in MPECs 2008-A52 & 2008-A55 -- 2008 AU28, 2008 AD, 2007 YQ56
`704`	LINEAR in New Mexico, 8 in MPEC 2008-A52 -- 2007 PU11, 65706, 40267, 154589, 136793, 5587, 3691, 1862
`699`	LONEOS in Arizona, 1 in MPEC 2008-A52 -- 170903
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2008-A52 & 2008-A55 -- 2008 AU28, 2007 VK184
`J40`	Malaga Obs. in Spain, 1 in MPEC 2008-A52 -- 2005 WJ56
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-A52, 2008-A53, 2008-A54, 2008-A55, 2008-A56, 2008-A57 & 2008-A58 -- 2008 AW28, 2008 AV28, 2008 AU28, 2008 AU26, 2008 AT28, 2008 AS28, 2006 KT1, 2005 XK8, 2005 CZ36, 85953, 8034
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2008-A52 -- 2007 YZ, 2007 YF1, 2007 WF55, 2007 VH3, 2007 SP6, 2005 XD1, 2005 TU45, 90403, 68359, 138947, 136793, 5131
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2008-A52, 2008-A54, 2008-A56 & 2008-A58 -- 2008 AV28, 2008 AU26, 2008 AT28, 2006 KT1, 144411
`291`	Spacewatch 1.8m telescope in Arizona, 13 in MPECs 2008-A52, 2008-A53, 2008-A54, 2008-A56, 2008-A57 & 2008-A58 -- 2008 AW28, 2008 AV28, 2008 AU26, 2008 AT28, 2008 AS28, 2007 YS56, 2007 YQ56, 2007 YO56, 2007 YM56, 2007 XJ16, 2007 TA19, 1998 BB10, 137078

Impact Risk Monitoring on 12 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 AS28	JPL Sentry	2321	2013-2107	64	6.9e-08	-3.88	-4.28	0	JPL: "Analysis based on 22 observations spanning 2.0592 days (2008-Jan-10.135 to 2008-Jan-12.19416)." Diameter approximately 0.441 km. from mean, weighted H=19.4.

2008 AF4	JPL Sentry	2051	2084-2099	54	2.4e-05	-2.19	-2.41	1	JPL: "Analysis based on 42 observations spanning 1.1138 days (2008-Jan-10.39652 to 2008-Jan-11.51032)." Diameter approximately 0.431 km. from mean, weighted H=19.5.
2008 AF4	NEODyS	1702	2078-2090	27	1.69e-05	-2.33	-2.42	1	NEODyS: "Based on 43 optical observations (of which 1 are rejected as outliers) from 2008/01/10.397 to 2008/01/11.511."

2007 YS56	JPL Sentry	1544	2104	1	7.1e-08	-7.91	-7.91	0	JPL: "Analysis based on 49 observations spanning 11.051 days (2007-Dec-31.24562 to 2008-Jan-11.29675)." Diameter approximately 0.023 km. from mean, weighted H=25.8.

2007 YQ56	JPL Sentry	1544	2094-2100	2	1.7e-09	-6.50	-6.68	0	JPL: "Analysis based on 66 observations spanning 12.049 days (2007-Dec-31.14551 to 2008-Jan-12.19435)." Diameter approximately 0.340 km. from mean, weighted H=20.0.
2007 YQ56	NEODyS	1544	R E M O V E D

2007 VK184	NEODyS	1544	2048-2071	6	3.43e-04	-1.82	-1.83	1	NEODyS: "Based on 102 optical observations (of which 1 are rejected as outliers) from 2007/11/12.140 to 2008/01/11.153. NOTE: The Virtual Impactor in 2048/06/03.088 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 12 January '08

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

2321	Noted that JPL Sentry has posted 2008 AS28 as an impact risk - see above
2239	Grabbed MPEC 2008-A58 - 2008 AU26 - see above
2051	Noted that JPL Sentry has posted 2008 AF4 as an impact risk - see above Grabbed MPEC 2008-A53 - 2008 AS28 - see above Grabbed MPEC 2008-A54 - 2008 AT28 - see above Grabbed MPEC 2008-A55 - 2008 AU28 - see above Grabbed MPEC 2008-A56 - 2008 AV28 - see above Grabbed MPEC 2008-A57 - 2008 AW28 - see above
1702	Noted that NEODyS has posted 2008 AF4 as an impact risk - see above
1544	Noted that NEODyS has updated its 2007 VK184 risk assessment - see above Noted that JPL Sentry has updated its 2007 YQ56 risk assessment - see above Noted that NEODyS has removed 2007 YQ56 as an impact risk - see above Noted that JPL Sentry has updated its 2007 YS56 risk assessment - see above Grabbed MPEC 2008-A52 - Daily Orbit Update - see above

http://www.HohmannTransfer.com/mn/08/08012_0112.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2008 Columbine, Inc. - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com> (HTML 4.01 validation).
Important news updates are flagged by A/CC's RSS news feed (link).