2009-01-02 Tracking News

Contents on 2 January '09

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 2 new, 5 updated
- New MPECs -- fourteen MPECs
Observers -- 25 observing facilities
Impact Risk Monitoring -- ten 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.

NEOCP Activity on 2 January '09

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of 33 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 2 January '09

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been fourteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-A06 time-stamped "07:09 UT" - Daily Orbit Update - see below
MPEC 2009-A07 time-stamped "17:21 UT" - 2008 YU32 - see below
MPEC 2009-A08 time-stamped "17:25 UT" - 2008 YV32 - see below
MPEC 2009-A09 time-stamped "17:28 UT" - 2008 YW32 - see below
MPEC 2009-A10 time-stamped "17:30 UT" - 2008 YX32 - see below
MPEC 2009-A11 time-stamped "17:33 UT" - 2008 YY32 - see below
MPEC 2009-A12 time-stamped "17:35 UT" - 2008 YZ32 - see below
MPEC 2009-A13 time-stamped "17:41 UT" - 2009 AK - see below
MPEC 2009-A14 time-stamped "17:44 UT" - 2009 AL - see below
MPEC 2009-A15 time-stamped "17:46 UT" - 2009 AM - see below
MPEC 2009-A16 time-stamped "17:48 UT" - 2009 AN - see below
MPEC 2009-A17 time-stamped "18:35 UT" - 2007 TH422, 2007 TJ422, 2007 TK422 - see below
MPEC 2009-A18 time-stamped "18:45 UT" - Editorial Notice - see below
MPEC 2009-A19 time-stamped "21:56 UT" - 2009 AO

MPEC 2009-A19 - "21:56 UT" - 2009 AO

K09A00O 2009 AO (i=36.1°, Q=6.040 AU, H=17.6 ~1.02 km) was discovered at 0151 UT on 2 Jan. by the Spacewatch 0.9m telescope, which observed it at Jan. 2.08-10p3. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Jan. 2.24-25p4) and Great Shefford Obs. (Jan. 2.85-87p3).

MPEC 2009-A18 - "18:45 UT" - Editorial Notice

MPEC 2009-A17 - "18:35 UT" - 2007 TH422, 2007 TJ422, 2007 TK422

K07Tg2K 2007 TK422 (Centaur, q=16.981 AU, Q=25.492 AU, H=8.7 ~61.6 km) from Lowell Obs. Anderson Mesa Station (Dec. 1.09p1 at R=22.2 & 1.26p1) and Kitt Peak Natl. Obs. (KPNO) (Dec. 21.16p1, 22.10p1 & 22.18p1)
K07Tg2J 2007 TJ422 (Centaur, q=9.269 AU, Q=29.946 AU, H=11.1 ~20.4 km) from Anderson Mesa Sta. (Dec. 1.08p1 at R=23.1 & 1.24p1) and KPNO (Dec. 21.14p1 at r=22.4, 21.18p1 at r=22.3 & 22.18p1 at r=21.9)
K07Tg2H 2007 TH422 (KBO, q=28.457 AU, Q=50.145 AU, H=7.7 ~97.7 km) from Anderson Mesa Sta. (Dec. 1.35p1 & 1.40p1) and KPNO (Dec. 21.31p1, 21.39p1 & 22.31p1)

MPEC 2009-A16 - "17:48 UT" - 2009 AN

K09A00N 2009 AN (H=20.2 ~309m) was discovered at 1017 UT on 1 Jan. by the Mt. Lemmon Survey (MLS), which observed it at Jan. 1.43-45p4. The discovery was confirmed by Starkenburg Obs. (Jan. 1.87-89p2), MRO (Jan. 2.34p3), and the Spacewatch 1.8m telescope (Jan. 2.48-51p3).

MPEC 2009-A15 - "17:46 UT" - 2009 AM

K09A00M 2009 AM (Q=4.661 AU, H=21.3 ~186m) was discovered at 0934 UT on 1 Jan. by MLS, which observed it at Jan. 1.40-42p4 and 2.32-33p3. The discovery was confirmed by Kanab Obs. (Jan. 2.33-36p2) and Spacewatch 1.8m (Jan. 2.40p2).

MPEC 2009-A14 - "17:44 UT" - 2009 AL

K09A00L 2009 AL (risk-listed, Q=4.768 AU, Earth MOID=4.4 LD, H=21.6 ~162m) was discovered at 0711 UT on 1 Jan. by MLS, which observed it at Jan. 1.30-32p4, 1.37-39p3, and 2.27-30p4. The discovery was confirmed by Spacewatch 1.8m (Jan. 2.19-20p3), MRO (Jan. 2.22-23p3), and Kanab Obs. (Jan. 2.25-28p2).

MPEC 2009-A13 - "17:41 UT" - 2009 AK

K09A00K 2009 AK (Q=5.325 AU, H=19.6 ~407m) was discovered at 0307 UT on 1 Jan. by MLS, which observed it at Jan. 1.13-21p8 and 2.13-16p4. The discovery was confirmed by Sabino Canyon Obs. (Jan. 1.23-25p2), Farra d'Isonzo Obs. (Jan. 1.78-82p2), Sandlot Obs. (Jan. 2.04-05p3), Spacewatch 1.8m (Jan. 2.07-08p3), and Desert Moon Obs. (Jan. 2.16-20p3).

MPEC 2009-A12 - "17:35 UT" - 2008 YZ32

K08Y32Z 2008 YZ32 (H=20.2 ~309m) was discovered at 1204 UT on 31 Dec. by the Catalina Sky Survey (CSS), which observed it at Dec. 31.50-52p4. The discovery was confirmed by MLS (Dec. 31.56p3 & Jan. 1.46-48p4), Spacewatch 1.8m (Jan. 1.32-33p3 & 2.37-38p3), Desert Moon Obs. (Jan. 1.40-43p3 & 2.34-37p3), MRO (Jan. 1.41-42p5 & 2.52p4), Sabino Canyon Obs. (Jan. 1.42-43p3), and Astronomical Research Obs. (ARO) (Jan. 1.43-44p3).

MPEC 2009-A11 - "17:33 UT" - 2008 YY32

K08Y32Y 2008 YY32 (risk-listed, Earth MOID=1.5 LD, H=25.2 ~31m) was discovered at 1201 UT on 31 Dec. by CSS, which observed it at Dec. 31.42-43p2 and 31.50-51p3. The discovery was confirmed by Spacewatch 1.8m (Jan. 1.26-27p3), Sabino Canyon Obs. (Jan. 1.28p3), MRO (Jan. 1.30-31p4 & 2.40-44p7), MLS (Jan. 1.43-45p4), Starkenburg Obs. (Jan. 1.80-85p9), Farra d'Isonzo Obs. (Jan. 1.85-86p3), and Remanzacco Obs. (Jan. 1.88-89p2). This object is now within ten lunar distances (LD) of Earth, reaching 6.2 LD on 4 Jan.

MPEC 2009-A10 - "17:30 UT" - 2008 YX32

K08Y32X 2008 YX32 (H=20.8 ~234m) was discovered at 0734 UT on 31 Dec. by CSS, which observed it at Dec. 31.32-34p4 and 31.44-45p4. The discovery was confirmed by Spacewatch 1.8m (Jan. 1.24-26p3 & 2.43-44p3), Desert Moon Obs. (Jan. 1.25-32p3), MRO (Jan. 1.28-29p4 & 2.31-33p4), MLS (Jan. 1.40-43p4 & 2.35-38p4), and Kanab Obs. (Jan. 2.40-43p2).

MPEC 2009-A09 - "17:28 UT" - 2008 YW32

K08Y32W 2008 YW32 (small asteroid, H=25.1 ~32m) was discovered at 0712 UT on 31 Dec. by Spacewatch 0.9m, which observed it at Dec. 31.30-34p3. The discovery was confirmed by Spacewatch 1.8m (Dec. 31.42-45p6, Jan. 1.28-29p3 & 2.45-46p3), MRO (Dec. 31.44-45p4, Jan. 1.33-34p4 & 2.33-34p3), and MLS (Jan. 1.43-45p4).

MPEC 2009-A08 - "17:25 UT" - 2008 YV32

K08Y32V 2008 YV32 (risk-listed, Earth MOID=0.8 LD, H=26.1 ~20m) was discovered at 0517 UT on 31 Dec. by MLS, which observed it at Dec. 31.22-25p4, 31.29-30p2, Jan. 1.26-29p4, and 2.27-30p4. The discovery was confirmed by Spacewatch 1.8m (Jan. 1.17p2 & 2.29-30p3), MRO (Jan. 2.20-21p3), and Desert Moon Obs. (Jan. 2.26-31p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 3.2 LD on 9 Jan.

MPEC 2009-A07 - "17:21 UT" - 2008 YU32

K08Y32U 2008 YU32 (risk-listed, Earth MOID=2.6 LD, H=19.8 ~371m) was discovered at 0226 UT on 31 Dec. by MLS, which observed it at Dec. 31.10-13p4 and 31.17-18p2. The discovery was confirmed by MRO (Dec. 31.17-19p4) and Spacewatch 1.8m (Jan. 1.13-14p3 & 2.09-10p3).

<< DOU on 2 Jan. '09 >> MPEC 2009-A06 - "07:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K08Y30U 2008 YU30 (small asteroid, arc=1 day, H=23.2 ~78m) from ARO (Jan. 1.40p3) and Spacewatch 1.8m (Jan. 1.50-52p3)
K08Y30T 2008 YT30 (arc=1 day, H=19.3 ~467m) from ARO (Jan. 1.17-18p3) and Spacewatch 1.8m (Jan. 1.40-41p3)
K08Y30H 2008 YH30 (small asteroid, arc=1 day, H=26.8 ~15m) from MRO (Jan. 1.27-28p3), ARO (Jan. 1.32-33p2), and Spacewatch 1.8m (Jan. 1.48-50p3)
K08Y30F 2008 YF30 (small asteroid, arc=1 day, H=24.4 ~45m) from MRO (Jan. 1.25-27p3) and Spacewatch 1.8m (Jan. 1.36-37p2)
K08Y29F 2008 YF29 (small asteroid, arc=2 days, H=24.1 ~51m) from Spacewatch 1.8m (Jan. 1.23-24p3) and ARO (Jan. 1.24-25p4)
K08Y29E 2008 YE29 (Q=4.544 AU, arc=2 days, H=20.2 ~309m) from Bergen-Enkheim Obs. (Dec. 30.83-87p3), Spacewatch 1.8m (Jan. 1.18-20p3), and ARO (Jan. 1.22-23p3)
Observations of recently (no longer) risk-listed objects
K08Y29B 2008 YB29 (small asteroid, arc=2 days, H=25.7 ~25m) from Spacewatch 1.8m (Jan. 1.42-43p3)
K08Y29A 2008 YA29 (small asteroid, arc=2 days, H=24.8 ~37m) from Spacewatch 1.8m (Jan. 1.44-45p3)
K08Y03J 2008 YJ3 (arc=10 days, H=20.2 ~309m) from Spacewatch 1.8m (Jan. 1.21-22p3)
K08Y02N 2008 YN2 (small asteroid, arc=11 days, H=26.3 ~19m) from ARO (Jan. 1.07p1 at V=22.3 & 1.11p1 at V=22.2)
K08X02Q 2008 XQ2 (arc=25 days, H=19.9 ~355m) from Linz Obs. (Dec. 29.94-97p4)
K08X00N 2008 XN (arc=31 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 2.12-13p3)
Observations of small asteroids (H>22.0)
K08Y30G 2008 YG30 (arc=1 day, H=24.6 ~41m) from ARO (Jan. 1.27p4)
K08Y29G 2008 YG29 (arc=2 days, H=24.0 ~54m) from ARO (Jan. 1.34-35p4)
K08Y27Q 2008 YQ27 (arc=4 days, H=22.5 ~107m) from ARO (Dec. 31.99-00p3)
K08Y27N 2008 YN27 (arc=3 days, H=22.1 ~129m) from ARO (Jan. 1.24p3) and Petit Jean Mtn. South Obs. (PJMSO) (Jan. 1.31-32p8)
K08Y27M 2008 YM27 (arc=3 days, H=23.5 ~68m) from ARO (Jan. 1.24p4)
K08Y03G 2008 YG3 (Q=4.075 AU, arc=10 days, H=22.2 ~123m) from ARO (Jan. 1.28-29p4)
Observations of almost-small asteroids (21.7<H<=22.0)
K08Y29D 2008 YD29 (Q=4.452 AU, arc=2 days, H=22.0 ~135m) from ARO (Jan. 1.18-19p3) and Spacewatch 1.8m (Jan. 1.39p2)
K08S00R 2008 SR (arc=101 days, H=21.8 ~148m) from MLS (Dec. 31.28-31p4)
Observations of other objects
K08Y30E 2008 YE30 (Q=4.108 AU, arc=10 days, H=21.0 ~214m) from Spacewatch 1.8m (Jan. 1.47-48p3)
K08Y28Z 2008 YZ28 (arc=2 days, H=20.2 ~309m) from ARO (Jan. 1.10-11p4)
K08Y27R 2008 YR27 (arc=25 days, H=18.1 ~812m) from Spacewatch 0.9m (Jan. 1.35-38p3)
K08Y27O 2008 YO27 (i=40.4°, arc=3 days, H=20.8 ~234m) from ARO (Jan. 1.25-26p3)
K08Y26G 2008 YG26 (arc=3 days, H=21.4 ~178m) from ARO (Jan. 1.13-14p4)
K08Y03F 2008 YF3 (arc=11 days, H=21.3 ~186m) from ARO (Jan. 1.30-31p3)
K08Y02K 2008 YK2 (arc=12 days, H=19.6 ~407m) from PJMSO (Jan. 1.38p7) and Hamamatsu-Yuto Obs. (Jan. 1.66-71p12)
K08Y02J 2008 YJ2 (arc=12 days, H=21.0 ~214m) from ARO (Jan. 1.00-01p3)
K08X02V 2008 XV2 (arc=26 days, H=20.4 ~282m) from PJMSO (Jan. 1.36-37p6)
K08X02E 2008 XE2 (arc=28 days, H=19.2 ~490m) from PJMSO (Jan. 1.42-43p6)
K08X01B 2008 XB1 (arc=29 days, H=20.9 ~224m) from ARO (Jan. 1.14-16p3)
K08W63Q 2008 WQ63 (arc=40 days, H=20.1 ~323m) from Hamamatsu-Yuto Obs. (Jan. 1.77-78p4)
K08W60L 2008 WL60 (arc=39 days, H=18.2 ~776m) from ARO (Jan. 1.26-27p4) and Hamamatsu-Yuto Obs. (Jan. 1.60-65p11)
K08W59B 2008 WB59 (arc=39 days, H=19.4 ~446m) from ARO (Jan. 1.12-13p3)
K08W01P 2008 WP1 (arc=44 days, H=20.3 ~295m) from Spacewatch 1.8m (Jan. 2.17-18p3)
K08V14K 2008 VK14 (arc=54 days, H=19.4 ~446m) from PJMSO (Jan. 1.33-34p6)
K08U95C 2008 UC95 (arc=64 days, H=18.6 ~645m) from PJMSO (Jan. 1.47p6)
K08U90N 2008 UN90 (arc=67 days, H=19.9 ~355m) from Spacewatch 1.8m (Jan. 2.15-16p3)
K08U00C 2008 UC (arc=73 days, H=19.0 ~537m) from Schiaparelli Obs. (Dec. 19.77-79p3)
K08S82H 2008 SH82 (arc=97 days, H=21.4 ~178m) from MLS (Jan. 1.26-27p2) and Hamamatsu-Yuto Obs. (Jan. 1.53-59p5)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.5 ~676m) from PJMSO (Jan. 1.32-33p6)
K08R26T 2008 RT26 (arc=116 days, H=19.4 ~446m) from MLS (Jan. 1.40-42p4)
K08Q03T 2008 QT3 (arc=129 days, H=18.7 ~616m) from ARO (Jan. 1.03-04p4)
K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from Nazaret Obs. (Jan. 1.15p1 & 1.19-22p4), PJMSO (Jan. 1.37-38p7), and Hamamatsu-Yuto Obs. (Jan. 1.51-55p28)
K06A02S 2006 AS2 (arc=4 opp, H=20.3 ~295m) from Bergen-Enkheim Obs. (Dec. 30.94p1, 30.98p1 & 31.03p1)
K05T49F 2005 TF49 (arc=2 opp, H=19.1 ~513m) from MLS (Jan. 1.08-09p4)
K05B00C 2005 BC (arc=2 opp, H=18.0 ~851m) from Hamamatsu-Yuto Obs. (Jan. 1.71-73p9)
K03Y01X 2003 YX1 (arc=2 opp, H=20.9 ~224m) from Desert Moon Obs. (Jan. 1.49-54p4)
K03R08P 2003 RP8 (arc=3 opp, H=18.6 ~645m) from Spacewatch 1.8m (Jan. 1.52-54p3)
K03H06B 2003 HB6 (Q=4.255 AU, arc=3 opp, H=17.6 ~1.02 km) from MLS (Jan. 1.33-34p4 at V=21.2-22.2)
K01W01T 2001 WT1 (arc=3 opp, H=19.9 ~355m) from CSS (Dec. 31.31-34p4)
K01V76B 2001 VB76 (arc=3 opp, H=20.4 ~282m) from MLS (Jan. 1.12-15p4)
K01V02B 2001 VB2 (arc=4 opp, H=18.8 ~589m) from Spacewatch 1.8m (Jan. 1.54-56p3)
K01F09X 2001 FX9 (arc=4 opp, H=18.7 ~616m) from PJMSO (Jan. 1.38-39p5)
K01D08V 2001 DV8 (arc=4 opp, H=20.5 ~269m) from Bergen-Enkheim Obs. (Dec. 29.88p1 & 29.92-95p2)
J91F00B 1991 FB (arc=3 opp, H=19.0 ~537m) from ARO (Jan. 1.18p1 at V=22.6 & 1.23-25p2 at V=22.5-6)
J9801 199801 2007 AE12 from Spacewatch 0.9m (Dec. 31.09-12p3)
H5706 175706 1996 FG3 from Spacewatch 0.9m (Dec. 31.52-55p3)
G2679 162679 2000 TK1 from Desert Moon Obs. (Jan. 1.06-07p3)
F3220 153220 2000 YN29 from Spacewatch 0.9m (Dec. 31.09-12p3)
E4901 144901 2004 WG1 from MLS (Jan. 1.19-22p4)
E2348 142348 2002 RX211 from Spacewatch 0.9m (Dec. 31.30-34p3) and Purple Mtn. Obs. XuYi Station (XuYi Sta.) (Jan. 1.58-64p4)
E1765 141765 2002 MP3 from CSS (Dec. 31.31-34p4)
D6635 136635 1994 VA1 from Desert Moon Obs. (Jan. 1.18-22p3)
89355 89355 2001 VS78 from Vicksburg Obs. (Jan. 1.23-26p3)
88188 88188 2000 XH44 from Spacewatch 1.8m (Jan. 1.12p3)
68350 68350 2001 MK3 from CSS (Dec. 31.46-48p4)
67399 67399 2000 PJ6 from MLS (Jan. 1.54-56p3)
53550 53550 2000 BF19 from MLS (Jan. 1.40-42p4)
35396 35396 1997 XF11 from Spacewatch 0.9m (Jan. 1.52-54p3)
25916 25916 2001 CP44 from CSS (Dec. 31.37-39p4)
22099 22099 2000 EX106 from Vicksburg Obs. (Jan. 1.20-21p3)
12923 12923 Zephyr (1999 GK4) from Spacewatch 0.9m (Jan. 1.40-44p3)
11405 11405 1999 CV3 from the Siding Spring Survey (SSS) (Jan. 1.46-49p3)
04179 4179 Toutatis (1989 AC) from PJMSO (Jan. 1.43p5)
03360 3360 Syrinx (1981 VA) from MLS (Jan. 1.20-22p3)
03103 3103 Eger (1982 BB) from CSS (Dec. 31.53-55p4)
02368 2368 Beltrovata (1977 RA) from XuYi Sta. (Jan. 1.59-64p4)
02212 2212 Hephaistos (1978 SB) from CSS (Dec. 31.23-25p4)

Observers on 2 January '09

A total of 25 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 24 in MPECs 2009-A06 & 2009-A12 -- 2008 YZ32, 2008 YZ28, 2008 YU30, 2008 YT30, 2008 YQ27, 2008 YO27, 2008 YN27, 2008 YN2, 2008 YM27, 2008 YJ2, 2008 YH30, 2008 YG30, 2008 YG3, 2008 YG29, 2008 YG26, 2008 YF3, 2008 YF29, 2008 YE29, 2008 YD29, 2008 XB1, 2008 WL60, 2008 WB59, 2008 QT3, 1991 FB
`A74`	Bergen-Enkheim Obs. in Germany, 3 in MPEC 2009-A06 -- 2008 YE29, 2006 AS2, 2001 DV8
`703`	Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2009-A06, 2009-A10, 2009-A11 & 2009-A12 -- 2008 YZ32, 2008 YY32, 2008 YX32, 2001 WT1, 68350, 25916, 141765, 3103, 2212
`448`	Desert Moon Obs. in New Mexico, 7 in MPECs 2009-A06, 2009-A08, 2009-A10, 2009-A12 & 2009-A13 -- 2009 AK, 2008 YZ32, 2008 YX32, 2008 YV32, 2003 YX1, 162679, 136635
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2009-A11 & 2009-A13 -- 2009 AK, 2008 YY32
`J95`	Great Shefford Obs. in England, 1 in MPEC 2009-A19 -- 2009 AO
`379`	Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2009-A06 -- 2008 YK2, 2008 WQ63, 2008 WL60, 2008 SH82, 2008 EV5, 2005 BC
`682`	Kanab Obs. in Utah, 3 in MPECs 2009-A10, 2009-A14 & 2009-A15 -- 2009 AM, 2009 AL, 2008 YX32
`695`	Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPEC 2009-A17 -- 2007 TK422, 2007 TJ422, 2007 TH422
`540`	Linz Obs. in Austria, 1 in MPEC 2009-A06 -- 2008 XQ2
`688`	Lowell Obs. Anderson Mesa Station in Arizona, 3 in MPEC 2009-A17 -- 2007 TK422, 2007 TJ422, 2007 TH422
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 11 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A14, 2009-A16 & 2009-A19 -- 2009 AO, 2009 AN, 2009 AL, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 YH30, 2008 YF30
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A13, 2009-A14, 2009-A15 & 2009-A16 -- 2009 AN, 2009 AM, 2009 AL, 2009 AK, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 SR, 2008 SH82, 2008 RT26, 2005 TF49, 2003 HB6, 2001 VB76, 67399, 53550, 144901, 3360
`J47`	Nazaret Obs. in Spain, 1 in MPEC 2009-A06 -- 2008 EV5
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2009-A06 -- 2008 YN27, 2008 YK2, 2008 XV2, 2008 XE2, 2008 VK14, 2008 UC95, 2008 SQ1, 2008 EV5, 2001 FX9, 4179
`D29`	Purple Mtn. Obs. XuYi Station (XuYi Sta.) in China, 2 in MPEC 2009-A06 -- 142348, 2368
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2009-A11 -- 2008 YY32
`854`	Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-A11, 2009-A12 & 2009-A13 -- 2009 AK, 2008 YZ32, 2008 YY32
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2009-A13 -- 2009 AK
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2009-A06 -- 2008 UC
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2009-A06 -- 11405
`691`	Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2009-A06, 2009-A09 & 2009-A19 -- 2009 AO, 2008 YW32, 2008 YR27, 35396, 199801, 175706, 153220, 142348, 12923
`291`	Spacewatch 1.8m telescope in Arizona, 27 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A13, 2009-A14, 2009-A15 & 2009-A16 -- 2009 AN, 2009 AM, 2009 AL, 2009 AK, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 YU30, 2008 YT30, 2008 YJ3, 2008 YH30, 2008 YF30, 2008 YF29, 2008 YE30, 2008 YE29, 2008 YD29, 2008 YB29, 2008 YA29, 2008 XN, 2008 WP1, 2008 UN90, 2003 RP8, 2001 VB2, 88188
`611`	Starkenburg Obs. in Germany, 2 in MPECs 2009-A11 & 2009-A16 -- 2009 AN, 2008 YY32
`H47`	Vicksburg Obs. in Mississippi, 2 in MPEC 2009-A06 -- 89355, 22099

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

Impact Risk Monitoring on 2 January '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.
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

2009 AL	JPL Sentry	2217	2045-2106	21	1.7e-07	-5.18	-5.59	0	JPL: "Analysis based on 19 observations spanning .99924 days (2009-Jan-01.29931 to 2009-Jan-02.29855)." Diameter approximately 0.162 km. from mean, weighted H=21.6.

2008 YY32	JPL Sentry	2217	2079	2	2.0e-06	-6.00	-6.03	0	JPL: "Analysis based on 37 observations spanning 2.0164 days (2008-Dec-31.42442 to 2009-Jan-02.44077)." Diameter approximately 0.030 km. from mean, weighted H=25.2.

2008 YV32	JPL Sentry	2217	2078-2094	7	2.3e-06	-6.47	-7.04	0	JPL: "Analysis based on 25 observations spanning 2.0893 days (2008-Dec-31.22029 to 2009-Jan-02.30958)." Diameter approximately 0.020 km. from mean, weighted H=26.1.

2008 YU32	JPL Sentry	2217	2013-2104	124	3.9e-07	-3.30	-4.01	0	JPL: "Analysis based on 16 observations spanning 1.9936 days (2008-Dec-31.10188 to 2009-Jan-02.09545)." Diameter approximately 0.366 km. from mean, weighted H=19.8.

2008 YU30	JPL Sentry	2217	2048-2090	8	5.9e-08	-6.50	-6.98	0	JPL: "Analysis based on 26 observations spanning 1.2048 days (2008-Dec-31.31333 to 2009-Jan-01.5181)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
2008 YU30	NEODyS	1414	2088	1	1.61e-09	-8.28	-8.28	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/31.314 to 2009/01/01.519."

2008 YT30	JPL Sentry	2217	2029-2108	124	6.7e-07	-3.49	-4.55	0	JPL: "Analysis based on 25 observations spanning 1.3192 days (2008-Dec-31.09054 to 2009-Jan-01.40975)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2008 YT30	NEODyS	1414	2018-2088	59	1.07e-06	-3.38	-3.71	0	NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/12/31.091 to 2009/01/01.411."

2008 YH30	JPL Sentry	2217	R E M O V E D						JPL: Risk listing removed at 2205 UTC.

2008 YF30	JPL Sentry	2217	R E M O V E D						JPL: Risk listing removed at 2135 UTC.
2008 YF30	NEODyS	1414	R E M O V E D						-

2008 YF29	JPL Sentry	2217	2024-2039	7	7.5e-06	-4.28	-4.33	0	JPL: "Analysis based on 30 observations spanning 2.0024 days (2008-Dec-30.24924 to 2009-Jan-01.25162)." Diameter approximately 0.051 km. from mean, weighted H=24.1.
2008 YF29	NEODyS	1414	2024-2083	6	6.85e-06	-4.27	-4.32	0	NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/12/30.250 to 2009/01/01.252."

2008 YE29	JPL Sentry	2059	2058-2106	5	3.3e-08	-5.40	-5.71	0	JPL: "Analysis based on 42 observations spanning 2.0070 days (2008-Dec-30.22562 to 2009-Jan-01.23259)." Diameter approximately 0.316 km. from mean, weighted H=20.2.
2008 YE29	NEODyS	1414	2058	1	1.27e-09	-6.67	-6.67	0	NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2008/12/30.226 to 2009/01/01.233."

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 2 January '09

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

2218	Grabbed MPEC 2009-A19 - 2009 AO - see above
2217	Noted that JPL Sentry has updated its 2008 YF29 risk assessment - see above Noted that JPL Sentry has removed 2008 YF30 as an impact risk - see above Noted that JPL Sentry has removed 2008 YH30 as an impact risk - see above Noted that JPL Sentry has updated its 2008 YT30 risk assessment - see above Noted that JPL Sentry has updated its 2008 YU30 risk assessment - see above Noted that JPL Sentry has posted 2008 YU32 as an impact risk - see above Noted that JPL Sentry has posted 2008 YV32 as an impact risk - see above Noted that JPL Sentry has posted 2008 YY32 as an impact risk - see above Noted that JPL Sentry has posted 2009 AL as an impact risk - see above
2059	Noted that JPL Sentry has updated its 2008 YE29 risk assessment - see above
1859	Grabbed MPEC 2009-A06 - Daily Orbit Update - see above Grabbed MPEC 2009-A09 - 2008 YW32 - see above Grabbed MPEC 2009-A10 - 2008 YX32 - see above Grabbed MPEC 2009-A11 - 2008 YY32 - see above Grabbed MPEC 2009-A12 - 2008 YZ32 - see above Grabbed MPEC 2009-A13 - 2009 AK - see above Grabbed MPEC 2009-A14 - 2009 AL - see above Grabbed MPEC 2009-A16 - 2009 AN - see above Grabbed MPEC 2009-A17 - 2007 TH422, 2007 TJ422, 2007 TK422 - see above Grabbed MPEC 2009-A18 - Editorial Notice - see above
1858	Grabbed MPEC 2009-A07 - 2008 YU32 - see above Grabbed MPEC 2009-A08 - 2008 YV32 - see above Grabbed MPEC 2009-A15 - 2009 AM - see above
1414	Noted that NEODyS has updated its 2008 YE29 risk assessment - see above Noted that NEODyS has updated its 2008 YF29 risk assessment - see above Noted that NEODyS has removed 2008 YF30 as an impact risk - see above Noted that NEODyS has updated its 2008 YT30 risk assessment - see above Noted that NEODyS has updated its 2008 YU30 risk assessment - see above

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