NASA/JPL announced yesterday that the Stardust-NExT spacecraft fired its thrusters briefly on November 20th to adjust its flight path on the way to a February 14th rendezvous with 9P/Tempel 1 next year. This will be the second comet flyby in four months and the first-ever return visit to a small Solar-System body. Artistic rendition credit: NASA/JPL.
Contents on 23 November '10
- IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- two MPECs
- Observers -- six observers
- Impact Risk Monitoring -- one object
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
Of 367 risk-listed objects, 48 have had news in the last 30 days. Updated at 1805 UTC on 23 Nov. - Earth's Busy Neighborhood Traffic Report
Six objects are known to be within ten LD of Earth today. Updated at 1754 UTC on 23 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 23 November '10
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2359 UTC). It was last noted active on November 21st.
New MPECs on 23 November '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-W19 time-stamped "07:13 UT" - Daily Orbit Update - see below
- MPEC 2010-W20 time-stamped "21:56 UT" - Comet C/2010 KW7 (WISE)
MPEC 2010-W20 - "21:56 UT" - Comet C/2010 KW7 (WISE)
- CK10K07W C/2010 KW7 (i=147.1°, q=2.570 AU, Q=197.175 AU, TP=2010 Oct. 11.34791 TT) from the Spacewatch 1.8m telescope (Nov. 17.44-45p3)
<< DOU on 23 Nov. '10 >> MPEC 2010-W19 - "07:13 UT" - Daily Orbit Update
- Observations of recently (no longer) risk-listed objects
- K10V21Q 2010 VQ21 (small asteroid, arc=39 days, H=22.2 ~123m) from Astronomical Research Obs. Westfield (Nov. 9.09-12p3)
- K10U06X 2010 UX6 (small asteroid, arc=23 days, H=23.0 ~85m) from ARO Westfield (Nov. 9.27-29p6)
- Observations of small asteroids (H>22.0)
- K10V98N 2010 VN98 (arc=11 days, H=22.3 ~117m) from Schiaparelli Obs. (Nov. 12.90-92p3)
- K10V21P 2010 VP21 (q=0.335 AU, arc=7 days, H=23.3 ~74m) from ARO Westfield (Nov. 9.22-23p4)
- K10V11Z 2010 VZ11 (arc=14 days, H=25.5 ~27m) from ARO Westfield (Nov. 9.33-36p4)
- K10V00R 2010 VR (arc=8 days, H=24.4 ~45m) from ARO Westfield (Nov. 9.37-39p4)
- K10V00B 2010 VB (arc=8 days, H=25.5 ~27m) from ARO Westfield (Nov. 9.13p4)
- K10U00M 2010 UM (arc=26 days, H=22.1 ~129m) from ARO Westfield (Nov. 9.30-32p3)
- K10R80T 2010 RT80 (arc=50 days, H=23.0 ~85m) from ARO Westfield (Sept. 30.24-27p5)
- K08E00L 2008 EL (arc=2 opp, H=22.2 ~123m) from Schiaparelli Obs. (Nov. 12.86-87p3)
- Observations of other objects
- K10V11T 2010 VT11 from ARO Westfield (Nov. 10.02p2)
- K10V00E 2010 VE (arc=10 days, H=19.7 ~389m) from ARO Westfield (Nov. 9.04-07p3)
- K10U07X 2010 UX7 (arc=17 days, H=21.1 ~204m) from ARO Westfield (Nov. 9.41-43p4)
- K10T54F 2010 TF54 (Q=5.501 AU, arc=36 days, H=19.7 ~389m) from ARO Westfield (Nov. 9.18-20p3)
- K10R80N 2010 RN80 (arc=70 days, H=20.2 ~309m) from ARO Westfield (Sept. 30.11-15p6)
- K10R43K 2010 RK43 (arc=63 days, H=20.7 ~245m) from ARO Westfield (Sept. 30.27-28p3)
- K10J41K 2010 JK41 (Q=4.301 AU, arc=39 days, H=20.1 ~323m) from Tenagra II Obs. (June 14.21-24p3)
- K09X02C 2009 XC2 (Q=4.187 AU, arc=3 opp, H=17.1 ~1.29 km) from Tenagra II Obs. (June 17.35-37p3 & 24.28-30p3)
- K09V24O 2009 VO24 (arc=2 opp, H=19.8 ~371m) from Tenagra II Obs. (June 1.44-46p3)
- K09U18V 2009 UV18 (Q=5.185 AU, arc=2 opp, H=16.0 ~2.14 km, q=1.167 AU) from Tenagra II Obs. (May 12.39-42p3)
- K09N00E 2009 NE (q=0.361 AU, Q=4.986 AU, arc=5 opp, H=16.0 ~2.14 km) from Tenagra II Obs. (May 4.24-27p3)
- K06H29R 2006 HR29 (arc=5 opp, H=20.7 ~245m) from Tenagra II Obs. (June 19.32-35p3 & 20.32-34p3)
- K06C10X 2006 CX10 (arc=3 opp, H=17.7 ~977m) from Tenagra II Obs. (May 15.15-16p3 & 16.15-16p3)
- K05N01P 2005 NP1 (arc=3 opp, H=18.7 ~616m) from Tenagra II Obs. (June 16.31-34p3)
- K03YC4T 2003 YT124 (arc=2 opp, H=20.5 ~269m) from the Mt. Lemmon Survey (MLS) (Nov. 5.24-25p4) and the Catalina Sky Survey (CSS) (Nov. 11.26-28p4)
- K03M04J 2003 MJ4 (arc=2 opp, H=18.9 ~562m) from Tenagra II Obs. (June 22.38-40p3)
- K02V68E 2002 VE68 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (Nov. 9.24-25p6)
- K01T44X 2001 TX44 (arc=5 opp, H=19.1 ~513m) from Schiaparelli Obs. (Nov. 12.80-81p3)
- O3298 243298 2008 EN82 from Tenagra II Obs. (June 13.41-43p3)
- O2216 242216 2003 RN10 from Tenagra II Obs. (May 25.43-45p3)
- O1596 241596 1998 XM2 from Tenagra II Obs. (May 20.26-28p3)
- F2671 152671 1998 HL3 from Tenagra II Obs. (May 7.30-33p3)
- F2558 152558 1990 SA from Tenagra II Obs. (May 31.25-27p3)
- 85818 85818 1998 XM4 from Tenagra II Obs. (May 20.43-45p3)
- 06050 6050 Miwablock (1992 AE) from Tenagra II Obs. (May 12.30-33p3 & 13.16-19p3)
Observers on 23 November '10
Six observers appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H21 | Astronomical Research Obs. Westfield in Illinois, 15 in MPEC 2010-W19 -- 2010 VZ11, 2010 VT11, 2010 VR, 2010 VQ21, 2010 VP21, 2010 VE, 2010 VB, 2010 UX7, 2010 UX6, 2010 UM, 2010 TF54, 2010 RT80, 2010 RN80, 2010 RK43, 2002 VE68 |
| 703 | Catalina Sky Survey in Arizona, 1 in MPEC 2010-W19 -- 2003 YT124 |
| G96 | Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-W19 -- 2003 YT124 |
| 204 | Schiaparelli Obs. in Italy, 3 in MPEC 2010-W19 -- 2010 VN98, 2008 EL, 2001 TX44 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-W20 -- C/2010 KW7 |
| 926 | Tenagra II Obs. in Arizona, 16 in MPEC 2010-W19 -- 2010 JK41, 2009 XC2, 2009 VO24, 2009 UV18, 2009 NE, 2006 HR29, 2006 CX10, 2005 NP1, 2003 MJ4, 85818, 243298, 242216, 241596, 152671, 152558, 6050 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 23 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 |
| 2009 FD | JPL Sentry | 1802 | 2185-2196 | 4 | 2.5e-03 | -1.66 | -1.69 | - | JPL: "Analysis based on 175 observations spanning 626.44 days (2009-Feb-24.36493 to 2010-Nov-12.80566)." Diameter approximately 0.130 km. from mean, weighted H=22.1. |
| NEODyS | 1621 | 2185-2196 | 7 | 2.44e-03 | -1.67 | -1.69 | - | NEODyS: "Based on 179 optical observations (of which 5 are rejected as outliers) from 2009-02-24.366 to 2010-11-12.806." | |
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 23 November '10
Times are UTC for when items were noted or added by The Tracking News.
| 2316 | Grabbed MPEC 2010-W20 - Comet C/2010 KW7 (WISE) - see above |
| 1802 | Noted that JPL Sentry has posted 2009 FD as an impact risk - see above |
| 1621 | Noted that NEODyS has posted 2009 FD as an impact risk - see above Grabbed MPEC 2010-W19 - Daily Orbit Update - see above |
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