A Southwest Research Institute item from last month reports that "before Rosetta's encounter with Lutetia, an international team of astronomers, using three of the world's largest telescopes, were busy making its own assessment of the asteroid's shape and size, as well as searching for satellites [using adaptive optics, enabling them now] to verify, validate and calibrate our method of combining AO data with light curve studies." See much more info here (new) and compare with flyby images on ESA's 21 Lutetia page. Image credit: SwRI.
Contents on 26 November '10
- IAU Minor Planet Center
- Observers -- twelve observers
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page
Of 368 risk-listed objects, 49 have had news in the last 30 days. Updated at 2141 UTC on 26 Nov.
- Earth's Busy Neighborhood Traffic Report
Four objects are known to be within ten LD of Earth today. Updated at 2143 UTC on 26 Nov.
- Ephemerides for risk-rated and nearby objects
- News image catalog
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
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 26 November '10
The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of five 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 26 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-W30 time-stamped "07:14 UT" - Daily Orbit Update - see below
- MPEC 2010-W31 time-stamped "18:05 UT" - 2007 EJ - see below
- MPEC 2010-W32 time-stamped "18:54 UT" - 2010 WS - see below
- MPEC 2010-W33 time-stamped "19:02 UT" - 2010 WT
MPEC 2010-W33 - "19:02 UT" - 2010 WT
- K10W00T 2010 WT (small asteroid, H=23.4 ~71m) from the Mt. Lemmon Survey (MLS) (Nov. 25.28-29p8 & 26.30-32p4), Remanzacco Obs. (Nov. 25.88p2), Great Shefford Obs. (Nov. 25.97-03p3), Tanti Obs. (Nov. 26.15-17p3), Sandlot Obs. (Nov. 26.22-24p3), Sabino Canyon Obs. (Nov. 26.24-27p3), and Astronomical Research Obs. Westfield (Nov. 26.25-27p4)
MPEC 2010-W32 - "18:54 UT" - 2010 WS
- K10W00S 2010 WS (risk-listed, Earth MOID=4.4 LD, H=24.9 ~35m) from MLS (Nov. 25.24-29p12), Great Shefford Obs. (Nov. 25.96p3), Sandlot Obs. (Nov. 26.18p3), Sabino Canyon Obs. (Nov. 26.18-19p3), and ARO Westfield (Nov. 26.28-29p3)
MPEC 2010-W31 - "18:05 UT" - 2007 EJ
- K07E00J 2007 EJ (Q=4.071 AU, H=18.2 ~776m) from the Siding Spring Survey (SSS) (Nov. 25.47p2 & 26.46-47p3)
- Observations of recently (no longer) risk-listed objects
- K10U06X 2010 UX6 (small asteroid, Q=4.011 AU, arc=23 days, H=23.0 ~85m) from ARO Westfield (Nov. 7.17-18p9)
- Observations of small asteroids (H>22.0)
- K10V71Y 2010 VY71 (arc=18 days, H=24.5 ~43m) from Sandlot Obs. (Nov. 26.25-27p3)
- K10V11Z 2010 VZ11 (arc=20 days, H=25.6 ~26m) from ARO Westfield (Nov. 7.26-28p7)
- K10U08L 2010 UL8 (arc=14 days, H=23.6 ~65m) from David Tholen's team on Mauna Kea (Nov. 14.43-44p3 at R=22.1-2)
- K10S00J 2010 SJ (arc=20 days, H=23.8 ~59m) from ARO Westfield (Oct. 1.21-23p4)
- K10RD0C 2010 RC130 (arc=37 days, H=22.2 ~123m) from ARO Westfield (Oct. 1.19-21p8)
- K10RD0B 2010 RB130 (arc=32 days, H=24.2 ~49m) from ARO Westfield (Oct. 1.33-35p4)
- K10R04J 2010 RJ4 (arc=41 days, H=24.0 ~54m) from ARO Westfield (Oct. 1.36p3)
- Observations of other objects
- K10P10M 2010 PM10 (arc=110 days, H=19.8 ~371m) from ARO Westfield (Oct. 1.38-40p4)
- K10J35A 2010 JA35 (arc=201 days, H=20.6 ~257m) from MLS (Nov. 25.16-17p4)
- K03YC4T 2003 YT124 (arc=2 opp, H=20.5 ~269m) from Desert Moon Obs. (Nov. 25.22-25p3)
- K02V68E 2002 VE68 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (Nov. 7.08-10p5)
- K02G09M 2002 GM9 (arc=5 opp, H=18.5 ~676m) from MLS (Nov. 25.18-20p4)
- K00U30P 2000 UP30 (arc=4 opp, H=17.2 ~1.23 km) from SSS (Nov. 25.44p2)
- J99X35R 1999 XR35 (arc=4 opp, H=17.9 ~891m) from MLS (Nov. 25.23-25p4)
- J8856 198856 2005 LR3 from Los Molinos Obs. (Nov. 14.23-24p4 & 14.32p1)
- E3651 143651 2003 QO104 from MLS (Nov. 25.23-25p4)
- 53789 53789 2000 ED104 from SSS (Nov. 24.47-50p2)
- 03838 3838 Epona (1986 WA) from Casasco Obs. (Nov. 24.77p1 & 24.87p1)
- 01580 1580 Betulia (1950 KA) from MLS (Nov. 25.28-29p4)
Observers on 26 November '10
Twelve observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2010-W30, 2010-W32 & 2010-W33 -- 2010 WT, 2010 WS, 2010 VZ11, 2010 UX6, 2010 SJ, 2010 RJ4, 2010 RC130, 2010 RB130, 2010 PM10, 2002 VE68|
|B66||Casasco Obs. in Italy, 1 in MPEC 2010-W30 -- 3838|
|448||Desert Moon Obs. in New Mexico, 1 in MPEC 2010-W30 -- 2003 YT124|
|J95||Great Shefford Obs. in England, 2 in MPECs 2010-W32 & 2010-W33 -- 2010 WT, 2010 WS|
|844||Los Molinos Obs. in Uruguay, 1 in MPEC 2010-W30 -- 198856|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-W30 -- 2010 UL8|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2010-W30, 2010-W32 & 2010-W33 -- 2010 WT, 2010 WS, 2010 JA35, 2002 GM9, 1999 XR35, 143651, 1580|
|473||Remanzacco Obs. in Italy, 1 in MPEC 2010-W33 -- 2010 WT|
|854||Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-W32 & 2010-W33 -- 2010 WT, 2010 WS|
|H36||Sandlot Obs. in Kansas, 3 in MPECs 2010-W30, 2010-W32 & 2010-W33 -- 2010 WT, 2010 WS, 2010 VY71|
|E12||Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2010-W30 & 2010-W31 -- 2007 EJ, 2000 UP30, 53789|
|I19||Tanti Obs. in Argentina, 1 in MPEC 2010-W33 -- 2010 WT|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 26 November '10
Notes for Today's Latest Risk Assessments
|2010 WS||JPL Sentry||2140||2080-2106||2||9.2e-09||-8.26||-8.45||0||JPL: "Analysis based on 24 observations spanning 1.0523 days (2010-Nov-25.23546 to 2010-Nov-26.287733)." Diameter approximately 0.035 km. from mean, weighted H=24.9.|
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 26 November '10
Times are UTC for when items were noted or added by The Tracking News.
|2140||Noted that JPL Sentry has posted 2010 WS as an impact risk - see above|
|1931||Grabbed MPEC 2010-W33 - 2010 WT - see above|
|1902||Grabbed MPEC 2010-W32 - 2010 WS - see above|
|1814||Grabbed MPEC 2010-W31 - 2007 EJ - see above|
|1646||Grabbed MPEC 2010-W30 - Daily Orbit Update - see above|