Contents on 21 November '09
- IAU Minor Planet Center
- NEOCP Activity -- eleven listings: 4 new, 7 updated
- New MPECs -- five MPECs
- Observers -- 21 observing facilities
- Impact Risk Monitoring -- nine objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- News image catalog
- 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 21 November '09
The MPC's NEO Confirmation Page has 11 listings: 4 new, 7 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and seven updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of 20 listings on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 21 November '09
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been five MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2009-W58 time-stamped "07:11 UT" - Daily Orbit Update - see below
- MPEC 2009-W59 time-stamped "13:18 UT" - 2002 WX12 - see below
- MPEC 2009-W60 time-stamped "13:31 UT" - 2009 WB11 - see below
- MPEC 2009-W61 time-stamped "13:35 UT" - 2009 WC11 - see below
- MPEC 2009-W62 time-stamped "13:37 UT" - 2009 WD11
MPEC 2009-W62 - "13:37 UT" - 2009 WD11
- K09W11D 2009 WD11 (borderline-small, H=21.8 ~148m) was discovered at 0900 UT on 20 Nov. by the Spacewatch 0.9m telescope, which observed it at Nov. 20.38-41p3. The discovery was confirmed by the Spacewatch 1.8m telescope (Nov. 20.46p2 & 21.27-28p3), Magdalena Ridge Obs. (MRO) (Nov. 20.48-49p4 & 21.33-35p3), Andrushivka Obs. (Nov. 20.88-89p4), Sandlot Obs. (Nov. 21.35-36p3), and Tenagra II Obs. (Nov. 21.49-50p3).
MPEC 2009-W61 - "13:35 UT" - 2009 WC11
- K09W11C 2009 WC11 (borderline-small, H=21.9 ~141m) was discovered at 0751 UT on 20 Nov. by Spacewatch 0.9m, which observed it at Nov. 20.33-36p3. The discovery was confirmed by MRO (Nov. 20.41-42p3 & 21.33-34p3), Spacewatch 1.8m (Nov. 20.44p2 & 21.29-30p3), Andrushivka Obs. (Nov. 20.86-87p6), and Sandlot Obs. (Nov. 21.33p3).
MPEC 2009-W60 - "13:31 UT" - 2009 WB11
- K09W11B 2009 WB11 (small asteroid, Earth MOID=5.5 LD, H=25.4 ~28m) was discovered at 0613 UT on 20 Nov. by Spacewatch 0.9m, which observed it at Nov. 20.26-29p3 and 21.29-32p3. The discovery was confirmed by MRO (Nov. 20.41-42p3 & 21.36-38p4), Spacewatch 1.8m (Nov. 20.42-43p3 & 21.25-26p3), Astronomical Research Obs. Westfield (ARO Westfield) (Nov. 21.30p2), and Sandlot Obs. (Nov. 21.30-32p3).
MPEC 2009-W59 - "13:18 UT" - 2002 WX12
- K02W12X 2002 WX12 (H=19.9 ~355m) from the Mt. Lemmon Survey (MLS) (Nov. 20.47-53p9), MRO (Nov. 20.51-53p4 & 21.41-43p4), Spacewatch 1.8m (Nov. 21.34-35p3), and Sandlot Obs. (Nov. 21.37-39p3)
<< DOU on 21 Nov. '09 >> MPEC 2009-W58 - "07:11 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K09W07Y 2009 WY7 (small asteroid, q=0.256 AU, arc=2 days, H=23.9 ~56m) from LINEAR (Nov. 20.24-29p10), Great Shefford Obs. (Nov. 20.88p2), McCarthy Obs. (Nov. 21.16p3), and MRO (Nov. 21.19-21p4)
- K09W07D 2009 WD7 (small asteroid, arc=1 day, H=25.7 ~25m) from MRO (Nov. 20.34-35p4)
- K09W06R 2009 WR6 (arc=2 days, H=18.1 ~812m) from MRO (Nov. 20.37-39p4) and Spacewatch 1.8m (Nov. 20.49-50p3)
- K09W06J 2009 WJ6 (small asteroid, arc=1 day, H=27.4 ~11m) from ARO Westfield (Nov. 20.29p4)
- K09W01M 2009 WM1 (arc=3 days, H=20.4 ~282m) from Spacewatch 1.8m (Nov. 20.47-48p3)
- K09W01J 2009 WJ1 (arc=4 days, H=21.2 ~195m) from Spacewatch 1.8m (Nov. 21.07-08p3)
- K09V26A 2009 VA26 (i=38.8°, arc=9 days, H=20.7 ~245m) from MRO (Nov. 20.35-36p4)
- Observations of recently (no longer) risk-listed objects
- K09W00B 2009 WB (small asteroid, arc=4 days, H=24.2 ~49m) from LINEAR (Nov. 20.18-23p5) and Tenagra II Obs. (Nov. 20.33p3)
- K09V24O 2009 VO24 (arc=9 days, H=19.7 ~389m) from Desert Moon Obs. (Nov. 20.21-25p3)
- K09V00T 2009 VT (small asteroid, arc=12 days, H=22.1 ~129m) from MLS (Nov. 20.26-27p3)
- K09U18V 2009 UV18 (Q=5.187 AU, arc=2 opp, H=15.5 ~2.69 km, q=1.167 AU) from LINEAR (Nov. 20.42-47p5)
- J98H03J 1998 HJ3 (arc=2 opp, H=18.8 ~589m) from LINEAR (Nov. 20.36-41p5), ARO Westfield (Nov. 20.38p4), and Tzec Maun Obs. Mayhill (Nov. 20.52-53p2)
- Observations of small asteroids (H>22.0)
- K09W08N 2009 WN8 (arc=1 day, H=24.7 ~39m) from LINEAR (Nov. 20.30-34p4)
- K09W07X 2009 WX7 (arc=1 day, H=26.9 ~14m) from ARO Westfield (Nov. 20.35p3)
- K09W06X 2009 WX6 (arc=2 days, H=23.9 ~56m) from Tenagra II Obs. (Nov. 20.32-33p3) and McCarthy Obs. (Nov. 21.21-22p3)
- K09V44S 2009 VS44 (arc=5 days, H=25.5 ~27m) from Spacewatch 1.8m (Nov. 20.22-23p3) and MLS (Nov. 20.36-38p4)
- K09V01N 2009 VN1 (arc=11 days, H=24.2 ~49m) from Spacewatch 1.8m (Nov. 20.37p2)
- K09T08L 2009 TL8 (arc=36 days, H=22.2 ~123m) from Spacewatch 1.8m (Nov. 20.35-36p3)
- K09SA4L 2009 SL104 (arc=55 days, H=23.4 ~71m) from Spacewatch 1.8m (Nov. 20.52-53p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K09U87S 2009 US87 (arc=28 days, H=21.8 ~148m) from Desert Moon Obs. (Nov. 20.28-32p3)
- Observations of other objects
- K09W07Z 2009 WZ7 (arc=1 day, H=19.6 ~407m) from ARO Westfield (Nov. 20.40-41p3)
- K09W01L 2009 WL1 (arc=4 days, H=18.4 ~708m) from Desert Moon Obs. (Nov. 20.34-35p4) and Doc Greiner Research Obs. (DGRO) (Nov. 21.18-19p6)
- K09V00W 2009 VW (arc=11 days, H=21.6 ~162m) from Castelmartini Obs. (Nov. 20.00-01p3)
- K09U28K 2009 UK28 (arc=25 days, H=19.7 ~389m) from Castelmartini Obs. (Nov. 20.01-02p5)
- K09U00K 2009 UK (arc=35 days, H=20.0 ~339m) from Desert Moon Obs. (Nov. 20.11-14p3)
- K09SA3M 2009 SM103 (Q=4.412 AU, arc=56 days, H=16.8 ~1.48 km) from Castelmartini Obs. (Nov. 19.82p3)
- K09R00N 2009 RN (Q=4.583 AU, arc=71 days, H=19.9 ~355m) from Jaen Obs. (Nov. 20.97-98p3)
- K09M06X 2009 MX6 (arc=149 days, H=19.2 ~490m) from Jaen Obs. (Nov. 20.95-96p3)
- K09K08K 2009 KK8 (arc=176 days, H=18.8 ~589m) from LINEAR (Nov. 20.25-28p3)
- K07U03R 2007 UR3 (arc=3 opp, H=21.2 ~195m) from LINEAR (Nov. 20.25-30p3)
- K06W01R 2006 WR1 (i=38.2°, arc=4 opp, H=17.6 ~1.02 km) from Desert Moon Obs. (Nov. 20.46-51p3)
- K05E29Z 2005 EZ29 (arc=2 opp, H=20.3 ~295m) from Spacewatch 1.8m (Nov. 20.28-30p3)
- K04X04K 2004 XK4 (arc=2 opp, H=20.9 ~224m) from Spacewatch 1.8m (Nov. 20.40-41p3)
- K03W21R 2003 WR21 (arc=4 opp, H=19.6 ~407m) from LINEAR (Nov. 20.38-41p4)
- K02V85T 2002 VT85 (arc=5 opp, H=18.0 ~851m) from MLS (Nov. 20.40-42p4)
- K02N16W 2002 NW16 (arc=2 opp, H=18.0 ~851m) from San Vito Obs. (Nov. 20.84-85p3)
- K02A15T 2002 AT15 (i=36.4°, arc=3 opp, H=18.3 ~741m) from Spacewatch 0.9m (Nov. 20.49-53p3)
- K01Y03U 2001 YU3 (arc=2 opp, H=20.1 ~323m) from Spacewatch 1.8m (Nov. 20.31-32p3 at V=22.3-23)
- K00W67S 2000 WS67 (q=0.380 AU, arc=7 opp, H=18.4 ~708m) from Spacewatch 0.9m (Nov. 20.37-41p3)
- J99Y00C 1999 YC (i=38.2°, q=0.241 AU, arc=8 opp, H=17.1 ~1.29 km) from LINEAR (Nov. 20.24-29p5)
- L7807 217807 2000 XK44 from the Catalina Sky Survey (CSS) (Nov. 20.33-34p4) and Mt. Tuffley Obs. (Nov. 20.89p3)
- L7683 217683 1999 RP36 from LINEAR (Nov. 20.18-23p5)
- L6689 216689 2004 HM1 from La Sagra Obs. (Nov. 19.88-90p3)
- L5188 215188 2000 NM from LINEAR (Nov. 20.38-42p4)
- G3295 163295 2002 HW from MLS (Nov. 20.51-52p2)
- G2998 162998 2001 SK162 from Castelmartini Obs. (Nov. 19.86p3)
- G2273 162273 1999 VL12 from LINEAR (Nov. 20.18-23p5)
- F4631 154631 2003 WO25 from CSS (Nov. 20.46-48p4)
- F2560 152560 1991 BN from La Sagra Obs. (Nov. 20.11-14p3)
- E3678 143678 2003 SA224 from Castelmartini Obs. (Nov. 19.84-85p3)
- D6617 136617 1994 CC from LINEAR (Nov. 20.13-18p5)
- 99248 99248 2001 KY66 from La Sagra Obs. (Nov. 20.16-19p3)
- 66272 66272 1999 JW6 from CSS (Nov. 20.46-47p4)
- 38091 38091 1999 JT3 from MLS (Nov. 20.25-27p4)
- 35396 35396 1997 XF11 from LINEAR (Nov. 20.30-35p5)
- 21088 21088 1992 BL2 from Spacewatch 0.9m (Nov. 20.49-53p3)
- 20790 20790 2000 SE45 from Castelmartini Obs. (Nov. 19.87p3)
- 17274 17274 2000 LC16 from Castelmartini Obs. (Nov. 19.89-90p3) and LINEAR (Nov. 20.12-17p5)
- 16834 16834 1997 WU22 from LINEAR (Nov. 20.06-10p4) and CSS (Nov. 20.14-16p4)
- 05653 5653 Camarillo (1992 WD5) from LINEAR (Nov. 20.43-48p4)
- 04015 4015 Wilson-Harrington (1979 VA) from Nazaret Obs. (Nov. 20.80-81p3)
- 03553 3553 Mera (1985 JA) from CSS (Nov. 20.19-20p3)
- 03200 3200 Phaethon (1983 TB) from CSS (Nov. 20.27-29p4)
- 01863 1863 Antinous (1948 EA) from MLS (Nov. 20.12-14p4)
- 00433 433 Eros (1898 DQ) from Mt. Tuffley Obs. (Nov. 20.88p3)
Observers on 21 November '09
A total of 21 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| A50 | Andrushivka Obs. in the Ukraine, 2 in MPECs 2009-W61 & 2009-W62 -- 2009 WD11, 2009 WC11 |
| H21 | Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 5 in MPECs 2009-W58 & 2009-W60 -- 2009 WZ7, 2009 WX7, 2009 WJ6, 2009 WB11, 1998 HJ3 |
| 160 | Castelmartini Obs. in Italy, 7 in MPEC 2009-W58 -- 2009 VW, 2009 UK28, 2009 SM103, 20790, 17274, 162998, 143678 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2009-W58 -- 66272, 217807, 16834, 154631, 3553, 3200 |
| 448 | Desert Moon Obs. in New Mexico, 5 in MPEC 2009-W58 -- 2009 WL1, 2009 VO24, 2009 US87, 2009 UK, 2006 WR1 |
| H26 | Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-W58 -- 2009 WL1 |
| J95 | Great Shefford Obs. in England, 1 in MPEC 2009-W58 -- 2009 WY7 |
| J28 | Jaen Obs. in Spain, 2 in MPEC 2009-W58 -- 2009 RN, 2009 MX6 |
| 704 | LINEAR in New Mexico, 17 in MPEC 2009-W58 -- 2009 WY7, 2009 WN8, 2009 WB, 2009 UV18, 2009 KK8, 2007 UR3, 2003 WR21, 1999 YC, 1998 HJ3, 35396, 217683, 215188, 17274, 16834, 162273, 136617, 5653 |
| J75 | La Sagra Obs. in Spain, 3 in MPEC 2009-W58 -- 99248, 216689, 152560 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2009-W58, 2009-W59, 2009-W60, 2009-W61 & 2009-W62 -- 2009 WY7, 2009 WR6, 2009 WD7, 2009 WD11, 2009 WC11, 2009 WB11, 2009 VA26, 2002 WX12 |
| 932 | McCarthy Obs. in Connecticut, 2 in MPEC 2009-W58 -- 2009 WY7, 2009 WX6 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2009-W58 & 2009-W59 -- 2009 VT, 2009 VS44, 2002 WX12, 2002 VT85, 38091, 163295, 1863 |
| J93 | Mt. Tuffley Obs. in England, 2 in MPEC 2009-W58 -- 217807, 433 |
| J47 | Nazaret Obs. in Spain, 1 in MPEC 2009-W58 -- 4015 |
| 233 | San Vito Obs. in Italy, 1 in MPEC 2009-W58 -- 2002 NW16 |
| H36 | Sandlot Obs. in Kansas, 4 in MPECs 2009-W59, 2009-W60, 2009-W61 & 2009-W62 -- 2009 WD11, 2009 WC11, 2009 WB11, 2002 WX12 |
| 691 | Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2009-W58, 2009-W60, 2009-W61 & 2009-W62 -- 2009 WD11, 2009 WC11, 2009 WB11, 2002 AT15, 2000 WS67, 21088 |
| 291 | Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2009-W58, 2009-W59, 2009-W60, 2009-W61 & 2009-W62 -- 2009 WR6, 2009 WM1, 2009 WJ1, 2009 WD11, 2009 WC11, 2009 WB11, 2009 VS44, 2009 VN1, 2009 TL8, 2009 SL104, 2005 EZ29, 2004 XK4, 2002 WX12, 2001 YU3 |
| 926 | Tenagra II Obs. in Arizona, 3 in MPECs 2009-W58 & 2009-W62 -- 2009 WX6, 2009 WD11, 2009 WB |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-W58 -- 1998 HJ3 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 21 November '09
| 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 WY7 | JPL Sentry | 1639 | R E M O V E D | JPL: Risk listing removed at 1301 UTC. | |||||
| 2009 WW7 | NEODyS | 1640 | 2042-2090 | 18 | 1.32e-05 | -7.01 | -7.12 | 0 | NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2009/11/19.239 to 2009/11/20.373." |
| 2009 WD7 | JPL Sentry | 1639 | R E M O V E D | JPL: Risk listing removed at 1052 UTC. | |||||
| 2009 WR6 | NEODyS | 1639 | R E M O V E D | - | |||||
| JPL Sentry | 1639 | R E M O V E D | JPL: Risk listing removed at 1049 UTC. | ||||||
| 2009 WJ6 | JPL Sentry | 1639 | 2049-2056 | 2 | 4.1e-08 | -8.37 | -8.39 | 0 | JPL: "Analysis based on 54 observations spanning 1.0263 days (2009-Nov-19.26657 to 2009-Nov-20.292876)." Diameter approximately 0.010 km. from mean, weighted H=27.6. |
| NEODyS | 1639 | R E M O V E D | - | ||||||
| 2009 WM1 | NEODyS | 1640 | 2018-2090 | 70 | 2.25e-05 | -2.04 | -2.46 | 0 | NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/20.482." |
| JPL Sentry | 1639 | 2018-2107 | 94 | 3.0e-05 | -1.99 | -2.47 | 0 | JPL: "Analysis based on 30 observations spanning 3.0170 days (2009-Nov-17.4641 to 2009-Nov-20.48107)." Diameter approximately 0.272 km. from mean, weighted H=20.5. | |
| 2009 WJ1 | NEODyS | 1640 | 2057-2080 | 2 | 4.83e-09 | -6.37 | -6.45 | 0 | NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2009/11/17.110 to 2009/11/21.076." |
| JPL Sentry | 1639 | 2080-2107 | 4 | 1.3e-08 | -6.11 | -6.53 | 0 | JPL: "Analysis based on 31 observations spanning 3.9665 days (2009-Nov-17.10881 to 2009-Nov-21.07531)." Diameter approximately 0.214 km. from mean, weighted H=21.0. | |
| 2009 VA26 | JPL Sentry | 1639 | R E M O V E D | JPL: Risk listing removed at 1051 UTC. | |||||
| 2009 VZ25 | NEODyS | 1639 | R E M O V E D | - | |||||
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 21 November '09
Times are UTC for when items were noted or added by The Tracking News.
| 1640 | Noted that NEODyS has updated its 2009 WJ1 risk assessment - see above Noted that NEODyS has updated its 2009 WM1 risk assessment - see above Grabbed MPEC 2009-W58 - Daily Orbit Update - see above Grabbed MPEC 2009-W59 - 2002 WX12 - see above Grabbed MPEC 2009-W60 - 2009 WB11 - see above Grabbed MPEC 2009-W61 - 2009 WC11 - see above |
| 1639 | Noted that JPL Sentry has removed 2009 VA26 as an impact risk - see above Noted that NEODyS has removed 2009 VZ25 as an impact risk - see above Noted that JPL Sentry has removed 2009 WD7 as an impact risk - see above Noted that JPL Sentry has updated its 2009 WJ1 risk assessment - see above Noted that JPL Sentry has updated its 2009 WJ6 risk assessment - see above Noted that NEODyS has removed 2009 WJ6 as an impact risk - see above Noted that JPL Sentry has updated its 2009 WM1 risk assessment - see above Noted that JPL Sentry has removed 2009 WR6 as an impact risk - see above Noted that NEODyS has removed 2009 WR6 as an impact risk - see above Noted that NEODyS has posted 2009 WW7 as an impact risk - see above Noted that JPL Sentry has removed 2009 WY7 as an impact risk - see above Grabbed MPEC 2009-W62 - 2009 WD11 - see above |
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