Contents on 24 November '08
- IAU Minor Planet Center
- NEOCP Activity -- 15 listings: 4 new, 11 updated
- New MPECs -- six MPECs
- Observers -- 22 observing facilities
- Impact Risk Monitoring -- seven 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 24 November '08
The MPC's NEO Confirmation Page has 15 listings: 4 new, 11 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and eleven updated listings. Of these, nine were "one nighters." So far The Tracking News has counted a total of 20 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 24 November '08
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-W56 time-stamped "07:08 UT" - Daily Orbit Update - see below
- MPEC 2008-W57 time-stamped "15:41 UT" - 2008 WH60 - see below
- MPEC 2008-W58 time-stamped "15:46 UT" - 2008 WJ60 - see below
- MPEC 2008-W59 time-stamped "15:53 UT" - 2008 WK60 - see below
- MPEC 2008-W60 time-stamped "15:58 UT" - 2008 WL60 - see below
- MPEC 2008-W61 time-stamped "17:30 UT" - 2005 YS
MPEC 2008-W61 - "17:30 UT" - 2005 YS
- K05Y00S 2005 YS (q=0.320 AU, H=19.7 ~389m) from Jim Young via Table Mtn. Obs. (Nov. 23.47-48p4 & 24.50-52p4)
MPEC 2008-W60 - "15:58 UT" - 2008 WL60
- K08W60L 2008 WL60 (Q=4.529 AU, H=17.6 ~1.02 km) was discovered at 0842 UT on 24 Nov. by the Catalina Sky Survey (CSS), which observed it at Nov. 23.46-50p7 and 24.36-37p4. The discovery was confirmed by Table Mtn. Obs. (Nov. 24.47-49p4).
MPEC 2008-W59 - "15:53 UT" - 2008 WK60
- K08W60K 2008 WK60 (small asteroid, Earth MOID=6.7 LD, H=22.5 ~107m) was discovered at 1526 UT on 23 Nov. by the Siding Spring Survey (SSS), which observed it at Nov. 23.64-66p3, 23.73p4, and 24.45-46p3. The discovery was confirmed by Grasslands Obs. (Nov. 24.24p3) and Grove Creek Obs. (Nov. 24.51-52p3).
MPEC 2008-W58 - "15:46 UT" - 2008 WJ60
- K08W60J 2008 WJ60 (H=21.1 ~204m) was discovered at 1116 UT on 23 Nov. by the Mt. Lemmon Survey (MLS), which observed it at Nov. 23.47-53p8 and 24.42-45p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Nov. 24.35-37p3) and the Spacewatch 1.8m telescope (Nov. 24.53-54p3).
MPEC 2008-W57 - "15:41 UT" - 2008 WH60
- K08W60H 2008 WH60 (H=20.7 ~245m) was discovered at 0656 UT on 23 Nov. by LINEAR, which observed it at Nov. 23.29-32p3. The discovery was confirmed by MLS (Nov. 24.17-19p3), Grasslands Obs. (Nov. 24.22-23p3), and MRO (Nov. 24.23-25p4).
<< DOU on 24 Nov. '08 >> MPEC 2008-W56 - "07:08 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08W59B 2008 WB59 (arc=1 day, H=19.1 ~513m) from Great Shefford Obs. (Nov. 23.96p3) and Modra Obs. (Nov. 23.97-98p5)
- K08W32Y 2008 WY32 (almost small, arc=2 days, H=22.0 ~135m) from Great Shefford Obs. (Nov. 23.99-04p4)
- K08W32X 2008 WX32 (arc=1 day, H=19.0 ~537m) from Kanab Obs. (Nov. 22.25p1 & 22.30p1)
- K08W32W 2008 WW32 (arc=3 days, H=21.3 ~186m) from Spacewatch 1.8m (Nov. 24.12p2)
- K08W32K 2008 WK32 (arc=2 days, H=19.7 ~389m) from Astronomical Research Obs. (ARO) (Nov. 23.23-24p3)
- K08W13Y 2008 WY13 (Q=5.050 AU, arc=3 days, H=21.4 ~178m) from ARO (Nov. 23.25-27p3 at V=21.7-22.1)
- K08V14L 2008 VL14 (arc=15 days, H=21.1 ~204m) from Spacewatch 1.8m (Nov. 24.21-22p3 at V=22.1)
- Observations of recently (no longer) risk-listed objects
- K08W14D 2008 WD14 (small asteroid, arc=2 days, H=22.7 ~98m) from LINEAR (Nov. 23.07-12p5) and Spacewatch 1.8m (Nov. 23.10-11p3)
- K08W00L 2008 WL (Q=4.551 AU, arc=5 days, H=21.7 ~155m) from Sandlot Obs. (Nov. 23.45p2)
- K08W00C 2008 WC (small asteroid, arc=5 days, H=26.4 ~18m) from Sormano Obs. (Nov. 22.99-00p4) and Sandlot Obs. (Nov. 23.33-34p5)
- K08U94Z 2008 UZ94 (arc=27 days, H=17.4 ~1.12 km) from Spacewatch 1.8m (Nov. 24.07p3)
- K08U91V 2008 UV91 (arc=27 days, H=20.0 ~339m) from Spacewatch 1.8m (Nov. 24.08-09p3)
- Observations of small asteroids (H>22.0)
- K08W02P 2008 WP2 (arc=3 days, H=25.0 ~34m) from ARO (Nov. 23.14p3) and Young/Table Mtn. (Nov. 23.43-44p4)
- K08W00K 2008 WK (arc=6 days, H=23.0 ~85m) from Calar Alto Obs. (Nov. 24.13-14p3)
- K08W00E 2008 WE (arc=5 days, H=25.9 ~22m) from Sandlot Obs. (Nov. 23.39-41p3)
- K08W00D 2008 WD (arc=5 days, H=25.9 ~22m) from ARO (Nov. 23.28-29p3) and Sandlot Obs. (Nov. 23.37-38p5)
- K08U91Z 2008 UZ91 (arc=27 days, H=22.4 ~112m) from Spacewatch 1.8m (Nov. 24.22-23p3)
- Observations of other objects
- K08W14C 2008 WC14 (Q=5.237 AU, arc=3 days, H=19.9 ~355m) from Young/Table Mtn. (Nov. 23.45-46p4)
- K08W02N 2008 WN2 (arc=30 days, H=20.7 ~245m) from LINEAR (Nov. 23.26-31p4)
- K08V14K 2008 VK14 (arc=15 days, H=19.1 ~513m) from Tradate Obs. (Nov. 22.96-97p2)
- K08U91W 2008 UW91 (arc=27 days, H=21.7 ~155m) from Spacewatch 1.8m (Nov. 24.13-14p3)
- K08U01U 2008 UU1 (arc=33 days, H=19.9 ~355m) from Spacewatch 1.8m (Nov. 24.20-21p3)
- K08TF7K 2008 TK157 (arc=61 days, H=20.5 ~269m) from LINEAR (Nov. 23.19-24p5)
- K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.4 ~708m) from Posadas Obs. (Nov. 22.97-98p3)
- K08R80E 2008 RE80 (arc=74 days, H=18.2 ~776m) from Spacewatch 1.8m (Nov. 24.19p3)
- K08G20V 2008 GV20 (arc=225 days, H=18.7 ~616m) from SSS (Nov. 22.57-58p2)
- K06SL7Z 2006 SZ217 (arc=3 opp, H=17.3 ~1.17 km) from Tradate Obs. (Nov. 22.93-94p2)
- K05YG5S 2005 YS165 (arc=2 opp, H=17.5 ~1.07 km) from CSS (Nov. 23.53-54p4)
- K05W55S 2005 WS55 (arc=4 opp, H=16.0 ~2.14 km, q=1.108 AU) from LINEAR (Nov. 23.17-22p5)
- K05J46E 2005 JE46 (arc=3 opp, H=17.7 ~977m) from ARO (Nov. 23.42-45p3 at V=22.0-22.1)
- K03W25X 2003 WX25 (Q=4.606 AU, arc=2 opp, H=18.6 ~645m) from CSS (Nov. 23.15-17p4)
- K03T01N 2003 TN1 (arc=3 opp, H=19.6 ~407m) from Spacewatch 1.8m (Nov. 24.10-11p3 at V=22.1)
- K02B25K 2002 BK25 (Q=4.017 AU, arc=4 opp, H=18.1 ~812m) from ARO (Nov. 23.47-48p2 at V=22.3)
- K01SS6F 2001 SF286 (arc=4 opp, H=19.0 ~537m) from Spacewatch 1.8m (Nov. 24.15-16p3)
- K01F09X 2001 FX9 (arc=4 opp, H=18.6 ~645m) from CSS (Nov. 23.48-50p4)
- K00E70W 2000 EW70 (arc=2 opp, H=21.2 ~195m) from ARO (Nov. 23.38-41p3 at V=22.3-5)
- J94U00G 1994 UG (arc=3 opp, H=21.0 ~214m) from ARO (Nov. 23.33-36p3 at V=22.1-3)
- J6068 196068 2002 TW55 from LINEAR (Nov. 23.13-17p4)
- J2559 192559 1998 VO from LINEAR (Nov. 23.19-24p4)
- J0166 190166 2005 UP156 from the Spacewatch 0.9m telescope (Nov. 23.13-15p3)
- I9552 189552 2000 RL77 from LINEAR (Nov. 23.07-12p5)
- G8044 168044 2005 SG from Inastars Obs. (Nov. 22.91p3)
- G2149 162149 1998 YQ11 from MLS (Nov. 23.14-15p4)
- E1079 141079 2001 XS30 from LINEAR (Nov. 23.29-34p4)
- D8852 138852 2000 WN10 from Tradate Obs. (Nov. 22.90-92p2)
- D6923 136923 1998 JH2 from Chabot Obs. (Nov. 23.32-33p3)
- D6849 136849 1998 CS1 from CSS (Nov. 23.47-50p5)
- 85236 85236 1993 KH from Posadas Obs. (Nov. 22.91p4)
- 54690 54690 2001 EB from LINEAR (Nov. 23.13-16p3)
- 54071 54071 2000 GQ146 from CSS (Nov. 23.15-16p4)
- 53430 53430 1999 TY16 from Tradate Obs. (Nov. 22.81-88p4)
- 36236 36236 1999 VV from Posadas Obs. (Nov. 22.88-89p3)
- 08035 8035 1992 TB from SSS (Nov. 23.73-74p3)
- 04183 4183 Cuno (1959 LM) from New Millennium Obs. (Nov. 22.89-94p6) and CSS (Nov. 23.15-17p4)
- 03360 3360 Syrinx (1981 VA) from Posadas Obs. (Nov. 22.86p3)
- 03200 3200 Phaethon (1983 TB) from LINEAR (Nov. 23.35-40p5)
- 03199 3199 Nefertiti (1982 RA) from CSS (Nov. 23.53-54p4)
- 01916 1916 Boreas (1953 RA) from CSS (Nov. 23.17-18p4), LINEAR (Nov. 23.35-40p5), and Chabot Obs. (Nov. 23.36-37p3)
- 01865 1865 Cerberus (1971 UA) from LINEAR (Nov. 23.13-18p5)
- 01620 1620 Geographos (1951 RA) from New Millennium Obs. (Nov. 22.91-95p6) and LINEAR (Nov. 23.28-33p5)
Observers on 24 November '08
A total of 22 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-W56 -- 2008 WY13, 2008 WP2, 2008 WK32, 2008 WD, 2005 JE46, 2002 BK25, 2000 EW70, 1994 UG |
| 493 | Calar Alto Obs. in Spain, 1 in MPEC 2008-W56 -- 2008 WK |
| 703 | Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2008-W56 & 2008-W60 -- 2008 WL60, 2005 YS165, 2003 WX25, 2001 FX9, 54071, 136849, 4183, 3199, 1916 |
| G58 | Chabot Obs. in northern California, 2 in MPEC 2008-W56 -- 136923, 1916 |
| 651 | Grasslands Obs. in Arizona, 2 in MPECs 2008-W57 & 2008-W59 -- 2008 WK60, 2008 WH60 |
| J95 | Great Shefford Obs. in England, 2 in MPEC 2008-W56 -- 2008 WY32, 2008 WB59 |
| E16 | Grove Creek Obs. in New South Wales, 1 in MPEC 2008-W59 -- 2008 WK60 |
| B15 | Inastars Obs. in Germany, 1 in MPEC 2008-W56 -- 168044 |
| 682 | Kanab Obs. in Utah, 1 in MPEC 2008-W56 -- 2008 WX32 |
| 704 | LINEAR in New Mexico, 14 in MPECs 2008-W56 & 2008-W57 -- 2008 WN2, 2008 WH60, 2008 WD14, 2008 TK157, 2005 WS55, 54690, 196068, 192559, 189552, 141079, 3200, 1916, 1865, 1620 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2008-W57 & 2008-W58 -- 2008 WJ60, 2008 WH60 |
| 118 | Modra Obs. in Slovakia, 1 in MPEC 2008-W56 -- 2008 WB59 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2008-W56, 2008-W57 & 2008-W58 -- 2008 WJ60, 2008 WH60, 162149 |
| A24 | New Millennium Obs. in Italy, 2 in MPEC 2008-W56 -- 4183, 1620 |
| J53 | Posadas Obs. in Spain, 4 in MPEC 2008-W56 -- 2008 SQ1, 85236, 36236, 3360 |
| H36 | Sandlot Obs. in Kansas, 4 in MPEC 2008-W56 -- 2008 WL, 2008 WE, 2008 WD, 2008 WC |
| E12 | Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-W56 & 2008-W59 -- 2008 WK60, 2008 GV20, 8035 |
| 587 | Sormano Obs. in Italy, 1 in MPEC 2008-W56 -- 2008 WC |
| 691 | Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-W56 -- 190166 |
| 291 | Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2008-W56 & 2008-W58 -- 2008 WW32, 2008 WJ60, 2008 WD14, 2008 VL14, 2008 UZ94, 2008 UZ91, 2008 UW91, 2008 UV91, 2008 UU1, 2008 RE80, 2003 TN1, 2001 SF286 |
| 673 | Table Mtn. Obs. in southern California, 1 in MPEC 2008-W60 -- 2008 WL60 |
| 6735 | Jim Young via Table Mtn. Obs. in southern California, 3 in MPECs 2008-W56 & 2008-W61 -- 2008 WP2, 2008 WC14, 2005 YS |
| B39 | Tradate Obs. in Italy, 4 in MPEC 2008-W56 -- 2008 VK14, 2006 SZ217, 53430, 138852 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 24 November '08
| 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 WB59 | NEODyS | 1419 | 2021-2089 | 25 | 7.78e-08 | -4.00 | -4.53 | 0 | NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/11/23.366 to 2008/11/23.979." |
| JPL Sentry | 1418 | 2021-2107 | 67 | 1.8e-07 | -3.66 | -4.34 | 0 | JPL #2 for the day: "Analysis based on 22 observations spanning .61322 days (2008-Nov-23.36479 to 2008-Nov-23.97801)." Diameter approximately 0.520 km. from mean, weighted H=19.1. | |
| 2008 WY32 | NEODyS | 1418 | R E M O V E D | - | |||||
| 2008 WX32 | NEODyS | 1418 | R E M O V E D | - | |||||
| JPL Sentry | 1418 | R E M O V E D | JPL: Risk listing removed at 0957 UTC. | ||||||
| 2008 WW32 | NEODyS | 1419 | 2053-2055 | 2 | 1.17e-08 | -6.12 | -6.16 | 0 | NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/11/21.130 to 2008/11/24.124." |
| JPL Sentry | 1418 | 2053-2105 | 2 | 1.2e-09 | -6.96 | -7.00 | 0 | JPL: "Analysis based on 16 observations spanning 2.9945 days (2008-Nov-21.12895 to 2008-Nov-24.12341)." Diameter approximately 0.228 km. from mean, weighted H=20.9. | |
| 2008 WK32 | JPL Sentry | 1418 | R E M O V E D | JPL: Risk listing removed at 0955 UTC. | |||||
| 2008 WY13 | NEODyS | 1419 | 2064-2083 | 3 | 4.17e-08 | -5.53 | -5.54 | 0 | NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2008/11/20.275 to 2008/11/23.273." |
| JPL Sentry | 1418 | 2064-2108 | 9 | 6.7e-08 | -5.35 | -5.49 | 0 | JPL: "Analysis based on 23 observations spanning 2.9985 days (2008-Nov-20.27393 to 2008-Nov-23.27243)." Diameter approximately 0.170 km. from mean, weighted H=21.5. | |
| 2008 VL14 | NEODyS | 1419 | 2071-2076 | 3 | 6.7e-07 | -4.01 | -4.38 | 0 | NEODyS: "Based on 50 optical observations (of which 1 are rejected as outliers) from 2008/11/09.266 to 2008/11/24.222." |
| JPL Sentry | 1418 | 2071-2076 | 3 | 6.3e-07 | -4.04 | -4.42 | 0 | JPL: "Analysis based on 49 observations spanning 14.955 days (2008-Nov-09.2656 to 2008-Nov-24.22096)." Diameter approximately 0.200 km. from mean, weighted H=21.1. | |
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 24 November '08
Times are UTC for when items were noted or added by The Tracking News.
| 1816 | Grabbed MPEC 2008-W61 - 2005 YS - see above |
| 1658 | Grabbed MPEC 2008-W57 - 2008 WH60 - see above Grabbed MPEC 2008-W58 - 2008 WJ60 - see above Grabbed MPEC 2008-W59 - 2008 WK60 - see above Grabbed MPEC 2008-W60 - 2008 WL60 - see above |
| 1419 | Noted that NEODyS has updated its 2008 VL14 risk assessment - see above Noted that NEODyS has updated its 2008 WW32 risk assessment - see above Noted that NEODyS has updated its 2008 WY13 risk assessment - see above Grabbed MPEC 2008-W56 - Daily Orbit Update - see above |
| 1418 | Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above Noted that JPL Sentry has updated its 2008 WB59 risk assessment - see above Noted that NEODyS has posted 2008 WB59 as an impact risk - see above Noted that JPL Sentry has removed 2008 WK32 as an impact risk - see above Noted that JPL Sentry has updated its 2008 WW32 risk assessment - see above Noted that JPL Sentry has removed 2008 WX32 as an impact risk - see above Noted that NEODyS has removed 2008 WX32 as an impact risk - see above Noted that JPL Sentry has updated its 2008 WY13 risk assessment - see above Noted that NEODyS has removed 2008 WY32 as an impact risk - see above |
| 0139 | Noted that JPL Sentry has posted 2008 WB59 as an impact risk - see above |
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