First word came in Minor Planet Electronic Circular 2010-W10 yesterday. Brian Marsden had passed on that morning at age 73. By A/CC's count it was the 20,691st MPEC issued since the first, signed by himself in 1993, one of many innovations from his time as Director of the IAU Minor Planet Center. The Harvard-Smithsonian Center for Astrophysics reports there was a long illness; but in retirement Dr. Marsden stayed involved, posting a batch of comet MPECs only nine days ago. More: MPML, C-ML, TPS, MB, S&T, BA, GK, NS, and a 2003 article. Image credit: Harold Dorwin/CfA.
Contents on 19 November '10
- IAU Minor Planet Center
- NEOCP Activity -- three listings: 2 new, 1 updated
- New MPECs -- four MPECs
- Observers -- sixteen observers
- Impact Risk Monitoring -- four objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
Of 367 risk-listed objects, 49 have had news in the last 30 days. Updated at 1642 UTC on 19 Nov. - Earth's Busy Neighborhood Traffic Report
Eleven objects are known to be within ten LD of Earth today. Updated at 1915 UTC on 19 Nov. - 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 19 November '10
The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and one updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six 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 19 November '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-W11 time-stamped "02:42 UT" - 2010 WH - see below
- MPEC 2010-W12 time-stamped "02:53 UT" - 2010 WJ - see below
- MPEC 2010-W13 time-stamped "04:21 UT" - 2010 RF181 - see below
- MPEC 2010-W14 time-stamped "07:12 UT" - Daily Orbit Update
<< DOU on 19 Nov. '10 >> MPEC 2010-W14 - "07:12 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K10VJ4W 2010 VW194 (small asteroid, arc=3 days, H=26.4 ~18m) from Magdalena Ridge Obs. (MRO) (Nov. 18.26-30p4)
- K10VE0C 2010 VC140 (small asteroid, arc=2 days, H=27.9 ~9m) from Astronomical Research Obs. Westfield (Nov. 16.34-36p4 & 17.38-40p3)
- K10V98Q 2010 VQ98 (small asteroid, arc=8 days, H=28.2 ~8m) from ARO Westfield (Nov. 15.42p3) and MRO (Nov. 18.38-40p4)
- K10U51E 2010 UE51 (small asteroid, arc=20 days, H=28.4 ~7m) from MRO (Nov. 18.28-32p4)
- Observations of recently (no longer) risk-listed objects
- K10VD9Z 2010 VZ139 (small asteroid, arc=20 days, H=22.9 ~89m) from the Catalina Sky Survey (CSS) (Oct. 29.20-22p4) and LINEAR (Nov. 18.19-31p9)
- K10V39X 2010 VX39 (arc=13 days, H=19.5 ~426m) from the Spacewatch 1.8m telescope (Nov. 18.47-48p3)
- K10V21V 2010 VV21 (small asteroid, arc=9 days, H=23.1 ~81m) from ARO Westfield (Nov. 15.32-34p2)
- K10V21Q 2010 VQ21 (small asteroid, arc=39 days, H=22.2 ~123m) from CSS (Oct. 7.23-24p4)
- K10U07T 2010 UT7 (arc=20 days, H=19.4 ~446m) from Spacewatch 1.8m (Nov. 18.48-49p3)
- K10U06X 2010 UX6 (small asteroid, arc=21 days, H=23.0 ~85m) from ARO Westfield (Nov. 16.36-38p6)
- Observations of small asteroids (H>22.0)
- K10W00B 2010 WB (arc=3 days, H=24.0 ~54m) from the Siding Spring Survey (SSS) (Nov. 18.52p5) and Kevin Hills via RAS Obs. Moorook (Nov. 18.69-70p3)
- K10VD9D 2010 VD139 (arc=4 days, H=26.2 ~19m) from ARO Westfield (Nov. 15.25-26p2)
- K10V98W 2010 VW98 (arc=7 days, H=22.5 ~107m) from ARO Westfield (Nov. 15.35p2)
- K10V98V 2010 VV98 (arc=6 days, H=24.6 ~41m) from ARO Westfield (Nov. 15.36-37p4)
- K10V98U 2010 VU98 (arc=8 days, H=24.7 ~39m) from Spacewatch 1.8m (Nov. 18.25-26p3)
- K10V98N 2010 VN98 (arc=9 days, H=22.3 ~117m) from ARO Westfield (Nov. 15.27-29p8)
- K10V71Y 2010 VY71 (arc=8 days, H=24.4 ~45m) from ARO Westfield (Nov. 15.21-23p4)
- K10V11Z 2010 VZ11 (arc=14 days, H=25.4 ~28m) from Desert Moon Obs. (Nov. 18.16-20p3)
- K10T04M 2010 TM4 (arc=47 days, H=22.6 ~102m) from Spacewatch 1.8m (Nov. 18.43-44p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- J98H49G 1998 HG49 (arc=4 opp, H=21.8 ~148m) from LINEAR (Nov. 18.38-42p4)
- Observations of other objects
- K10VJ0Y 2010 VY190 (arc=3 days, H=19.0 ~537m) from LINEAR (Nov. 18.25-30p10)
- K10VD9Y 2010 VY139 (Q=4.086 AU, arc=3 days, H=20.4 ~282m) from ARO Westfield (Nov. 16.33-34p3 & 17.40-41p3)
- K10VD9X 2010 VX139 (arc=3 days, H=20.6 ~257m) from ARO Westfield (Nov. 16.31-32p4)
- K10VD9K 2010 VK139 from ARO Westfield (Nov. 16.17p7)
- K10V99B 2010 VB99 (i=49.9°, arc=7 days, H=21.4 ~178m) from SSS (Nov. 18.66p3)
- K10V71Z 2010 VZ71 (arc=7 days, H=19.5 ~426m) from ARO Westfield (Nov. 15.27-29p4)
- K10V11T 2010 VT11 from ARO Westfield (Nov. 15.16-18p7)
- K10V01L 2010 VL1 (Q=4.288 AU, arc=15 days, H=20.4 ~282m) from Desert Moon Obs. (Nov. 18.31-35p3)
- K10U07E 2010 UE7 (arc=19 days, H=19.2 ~490m) from ARO Westfield (Nov. 15.25-26p6)
- K10U00D 2010 UD (arc=29 days, H=21.1 ~204m) from ARO Westfield (Nov. 15.09-11p3)
- K10T03M 2010 TM3 (arc=2 opp, H=20.6 ~257m) from LINEAR (Nov. 18.35-38p3)
- K10S41C 2010 SC41 (arc=62 days, H=19.9 ~355m) from Hamamatsu-Yuto Obs. (Nov. 18.62-66p12)
- K10RE7A 2010 RA147 (arc=64 days, H=19.3 ~467m) from the Spacewatch 0.9m telescope (Sept. 10.36-40p3)
- K10Q02D 2010 QD2 (arc=3 opp, H=17.3 ~1.17 km) from the Mt. Lemmon Survey (MLS) (Feb. 19.14-16p4)
- K10P09L 2010 PL9 (arc=102 days, H=20.1 ~323m) from ARO Westfield (Nov. 15.04-07p3 at V=21.8-22.2)
- K10OA1C 2010 OC101 (arc=119 days, H=20.9 ~224m) from Spacewatch 1.8m (Nov. 18.45-46p3)
- K10O01Q 2010 OQ1 (arc=120 days, H=18.9 ~562m) from SSS (Nov. 18.74p1)
- K10L97O 2010 LO97 (arc=158 days, H=18.9 ~562m) from LINEAR (Nov. 18.33-38p5) and Desert Moon Obs. (Nov. 18.41-42p4)
- K10L86F 2010 LF86 (arc=159 days, H=17.0 ~1.35 km) from LINEAR (Nov. 18.12-17p5)
- K10L68R 2010 LR68 (Q=4.881 AU, arc=2 opp, H=18.5 ~676m) from ARO Westfield (Nov. 16.38-40p6)
- K07E88M 2007 EM88 (arc=3 opp, H=19.4 ~446m) from Desert Moon Obs. (Nov. 18.44-46p3)
- K06V14B 2006 VB14 (arc=3 opp, H=18.5 ~676m) from LINEAR (Nov. 18.45-50p5)
- K06K40A 2006 KA40 (arc=3 opp, H=19.6 ~407m) from Spacewatch 1.8m (Nov. 18.32-33p3)
- K05T15B 2005 TB15 (arc=2 opp, H=19.4 ~446m) from ARO Westfield (Nov. 16.02-03p5)
- K04Q24T 2004 QT24 (arc=4 opp, H=18.3 ~741m) from ARO Westfield (Nov. 16.04-05p3)
- K04B01V 2004 BV1 (arc=2 opp, H=19.5 ~426m) from Spacewatch 1.8m (Nov. 18.30-31p3)
- K02V68E 2002 VE68 (arc=3 opp, H=20.5 ~269m) from Hamamatsu-Yuto Obs. (Nov. 18.48-52p9)
- O1662 241662 2000 KO44 from SSS (Nov. 18.61-65p3)
- I9011 189011 Ogmios (1997 NJ6) from Desert Moon Obs. (Nov. 18.10-12p3)
- A0926 100926 1998 MQ from Hamamatsu-Yuto Obs. (Nov. 18.70-72p7)
- 88959 88959 2001 TZ44 from Desert Moon Obs. (Nov. 18.13-14p5)
- 17181 17181 1999 UM3 from Desert Moon Obs. (Nov. 18.48p4)
- 05869 5869 Tanith (1988 VN4) from Hamamatsu-Yuto Obs. (Nov. 18.66-68p6)
MPEC 2010-W13 - "04:21 UT" - 2010 RF181
- K10RI1F 2010 RF181 (Earth MOID=4.7 LD, H=20.7 ~245m) from SSS (Sept. 11.56-60p4), LINEAR (Nov. 18.39-43p4), Terskol Obs. (Nov. 19.14p4), and Haute Provence Obs. (Nov. 19.14-15p9)
MPEC 2010-W12 - "02:53 UT" - 2010 WJ
- K10W00J 2010 WJ (H=17.9 ~891m) from LINEAR (Nov. 17.40-45p5), Tzec Maun Obs. Mayhill (Nov. 18.50-52p3), Terskol Obs. (Nov. 18.75p4), Raheny Obs. (Nov. 18.98-00p6), and Haute Provence Obs. (Nov. 19.01-02p10)
MPEC 2010-W11 - "02:42 UT" - 2010 WH
- K10W00H 2010 WH (H=18.9 ~562m) from LINEAR (Nov. 17.40-44p4), Terskol Obs. (Nov. 18.71-74p4), Moriyama Obs. (Nov. 18.78-79p2), Haute Provence Obs. (Nov. 18.96-99p8), and Raheny Obs. (Nov. 19.01-02p3)
Observers on 19 November '10
Sixteen observers appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H21 | Astronomical Research Obs. Westfield in Illinois, 20 in MPEC 2010-W14 -- 2010 VZ71, 2010 VY71, 2010 VY139, 2010 VX139, 2010 VW98, 2010 VV98, 2010 VV21, 2010 VT11, 2010 VQ98, 2010 VN98, 2010 VK139, 2010 VD139, 2010 VC140, 2010 UX6, 2010 UE7, 2010 UD, 2010 PL9, 2010 LR68, 2005 TB15, 2004 QT24 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-W14 -- 2010 VZ139, 2010 VQ21 |
| 448 | Desert Moon Obs. in New Mexico, 7 in MPEC 2010-W14 -- 2010 VZ11, 2010 VL1, 2010 LO97, 2007 EM88, 88959, 189011, 17181 |
| 379 | Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2010-W14 -- 2010 SC41, 2002 VE68, 100926, 5869 |
| 511 | Haute Provence Obs. in Germany, 3 in MPECs 2010-W11, 2010-W12 & 2010-W13 -- 2010 WJ, 2010 WH, 2010 RF181 |
| 704 | LINEAR in New Mexico, 10 in MPECs 2010-W11, 2010-W12, 2010-W13 & 2010-W14 -- 2010 WJ, 2010 WH, 2010 VZ139, 2010 VY190, 2010 TM3, 2010 RF181, 2010 LO97, 2010 LF86, 2006 VB14, 1998 HG49 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPEC 2010-W14 -- 2010 VW194, 2010 VQ98, 2010 UE51 |
| 900 | Moriyama Obs. in Japan, 1 in MPEC 2010-W11 -- 2010 WH |
| G96 | Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-W14 -- 2010 QD2 |
| D90` | Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-W14 -- 2010 WB |
| J41 | Raheny Obs. in Ireland, 2 in MPECs 2010-W11 & 2010-W12 -- 2010 WJ, 2010 WH |
| E12 | Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2010-W13 & 2010-W14 -- 2010 WB, 2010 VB99, 2010 RF181, 2010 OQ1, 241662 |
| 691 | Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-W14 -- 2010 RA147 |
| 291 | Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2010-W14 -- 2010 VX39, 2010 VU98, 2010 UT7, 2010 TM4, 2010 OC101, 2006 KA40, 2004 BV1 |
| B18 | Terskol Obs. in Russia, 3 in MPECs 2010-W11, 2010-W12 & 2010-W13 -- 2010 WJ, 2010 WH, 2010 RF181 |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-W12 -- 2010 WJ |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 19 November '10
| 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 |
| 2010 VW194 | JPL Sentry | 1632 | 2042-2108 | 28 | 4.6e-05 | -5.33 | -5.95 | 0 | JPL: "Analysis based on 18 observations spanning 2.9625 days (2010-Nov-15.34197 to 2010-Nov-18.30451)." Diameter approximately 0.018 km. from mean, weighted H=26.4. |
| NEODyS | 1632 | 2047-2089 | 12 | 2.8e-05 | -5.48 | -5.91 | 0 | NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2010-11-15.343 to 2010-11-18.305." | |
| 2010 VC140 | JPL Sentry | 1632 | R E M O V E D | JPL: Risk listing removed at 1134 UTC. | |||||
| NEODyS | 1632 | R E M O V E D | - | ||||||
| 2010 VQ98 | JPL Sentry | 1632 | 2100-2108 | 4 | 1.5e-05 | -6.88 | -7.19 | 0 | JPL: "Analysis based on 38 observations spanning 7.9622 days (2010-Nov-10.43786 to 2010-Nov-18.40006)." Diameter approximately 0.008 km. from mean, weighted H=28.2. |
| 2010 UE51 | JPL Sentry | 1632 | 2075-2078 | 4 | 1.7e-04 | -5.74 | -6.18 | 0 | JPL: "Analysis based on 156 observations spanning 20.060 days (2010-Oct-29.25716 to 2010-Nov-18.31734)." Diameter approximately 0.007 km. from mean, weighted H=28.3. |
| NEODyS | 1632 | 2074-2078 | 7 | 1.34e-04 | -5.86 | -6.19 | 0 | NEODyS: "Based on 160 optical observations (of which 4 are rejected as outliers) from 2010-10-29.258 to 2010-11-18.318." | |
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 19 November '10
Times are UTC for when items were noted or added by The Tracking News.
| 1632 | Noted that JPL Sentry has updated its 2010 UE51 risk assessment - see above Noted that NEODyS has updated its 2010 UE51 risk assessment - see above Noted that JPL Sentry has removed 2010 VC140 as an impact risk - see above Noted that NEODyS has removed 2010 VC140 as an impact risk - see above Noted that JPL Sentry has updated its 2010 VQ98 risk assessment - see above Noted that JPL Sentry has updated its 2010 VW194 risk assessment - see above Noted that NEODyS has updated its 2010 VW194 risk assessment - see above Grabbed MPEC 2010-W14 - Daily Orbit Update - see above |
| 0707 | Grabbed MPEC 2010-W13 - 2010 RF181 - see above |
| 0300 | Grabbed MPEC 2010-W11 - 2010 WH - see above Grabbed MPEC 2010-W12 - 2010 WJ - see above |
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