Contents on 15 November '11
- IAU Minor Planet Center
- Observers -- fifteen observers
- Impact Risk Monitoring -- one object
- Consolidated Risk Tables - the CRT page
Of 422 risk-listed objects, 26 have had news in the last 30 days. Updated at 1546 UTC on 15 Nov.
- Earth's Busy Neighborhood Traffic Report
One object is known to be within ten LD of Earth today. Updated at 0655 UTC on 15 Nov.
- Ephemerides for risk-rated & nearby objects + potential mission destinations
- News image catalog
- Object Links - mainly for radar targets & close passers - updated 15 Nov.
- 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 15 November '11
The MPC's NEO Confirmation Page has 3 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three objects listed. Of these, one was a "one nighter." So far The Tracking News has counted a total of four listings on the NEOCP 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 15 November '11
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of risk-listed objects
- K11P01U 2011 PU1 (small asteroid, arc=45 days, H=25.0 ~34m, PMD) from David Tholen's team on Mauna Kea (Aug. 29.37p5)
- Observations of recently (no longer) risk-listed objects
- K11U63S 2011 US63 (Q=5.389 AU, arc=24 days, H=17.9 ~891m) from Terskol Obs. (Nov. 13.72-73p3)
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K11UR5Z 2011 UZ275 (arc=15 days, H=23.3 ~74m) from Ka-Dar Obs. TAU Station (Nov. 13.95p4) and Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) (Nov. 15.11p9)
- K11UP5Y 2011 UY255 (arc=15 days, H=22.9 ~89m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Nov. 14.11-13p3)
- K11UB5A 2011 UA115 (Q=4.198 AU, arc=21 days, H=24.8 ~37m) from TAU Sta. (Nov. 13.90-91p4)
- K05Y55U 2005 YU55 (arc=2 opp, H=21.9 ~141m, radar support) from Peschiera del Garda Obs. (Nov. 10.86p6), Suno Obs. (Nov. 10.86-91p12), the SZTE Asteroid Program (Nov. 12.95-96p12), Maidbronn Obs. (Nov. 13.99-01p3), Thousand Oaks Obs. (Nov. 14.14-17p3 & 14.31-33p3), Hamamatsu-Yuto Obs. (Nov. 14.52-57p12), Argelander Institute for Astronomy Obs. (Nov. 14.83-00p91), and San Vito Obs. (Nov. 14.89-91p3)
- Observations supporting planetary radar
- K11L19C 2011 LC19 (Q=5.556 AU, arc=158 days, H=18.9 ~562m, radar) from Hamamatsu-Yuto Obs. (Nov. 14.78-82p9)
- 05143 5143 Heracles (1991 VL) (radar) from San Vito Obs. (Nov. 14.93p3)
-- Potential mission destinations (PMD) list & ephemerides -- Planetary radar schedules: Arecibo & Goldstone
- Observations of other objects
- K11V05W 2011 VW5 (arc=10 days, H=18.5 ~676m) from TAU Sta. (Nov. 13.93-94p3)
- K11V05S 2011 VS5 (arc=41 days, H=19.6 ~407m) from SZTE (Oct. 5.12-14p3) and DGRO-RH (Nov. 15.08-09p3)
- K11UA6U 2011 UU106 (arc=2 opp, H=18.8 ~589m) from Peschiera del Garda Obs. (Nov. 14.86-90p5) and DGRO-RH (Nov. 15.10p6)
- K11Q23F 2011 QF23 (arc=80 days, H=19.1 ~513m) from Holmes/CTIO (Nov. 14.08-10p3)
- K11M04O 2011 MO4 (arc=125 days, H=19.3 ~467m) from SZTE (Oct. 2.09-12p2)
- K11E78Z 2011 EZ78 (arc=244 days, H=17.2 ~1.23 km) from Holmes/CTIO (Nov. 14.01-03p2)
- K04J02O 2004 JO2 (arc=3 opp, H=17.3 ~1.17 km) from Hamamatsu-Yuto Obs. (Nov. 14.45-50p8) and San Vito Obs. (Nov. 14.83p3)
- U2831 302831 2003 FH from Castelmartini Obs. (Nov. 13.83p3 & 14.78p3)
- U2591 302591 2002 QE7 from Purple Mtn. Obs. Xuyi Station (Oct. 31.50-54p4)
- K8617 208617 2002 EB3 from Castelmartini Obs. (Nov. 14.72-73p4)
- 15817 15817 Lucianotesi (1994 QC) from Holmes/CTIO (Nov. 14.15-16p3)
- 02201 2201 Oljato (1947 XC) from Xuyi Sta. (Nov. 1.66-69p2)
Observers on 15 November '11
Fifteen observers appear in today's MPEC.
|Code||Observer / observatory|
|C60||Argelander Institute for Astronomy Obs. in Germany, 1 in MPEC 2011-V42 -- 2005 YU55|
|160||Castelmartini Obs. in Italy, 2 in MPEC 2011-V42 -- 302831, 208617|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2011-V42 -- 2011 UY255, 2011 QF23, 2011 EZ78, 15817|
|G48||Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPEC 2011-V42 -- 2011 VS5, 2011 UZ275, 2011 UU106|
|379||Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2011-V42 -- 2011 LC19, 2005 YU55, 2004 JO2|
|C32||Ka-Dar Obs. TAU Station in Russia, 3 in MPEC 2011-V42 -- 2011 VW5, 2011 UZ275, 2011 UA115|
|B82||Maidbronn Obs. in Germany, 1 in MPEC 2011-V42 -- 2005 YU55|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2011-V42 -- 2011 PU1|
|A53||Peschiera del Garda Obs. in Italy, 2 in MPEC 2011-V42 -- 2011 UU106, 2005 YU55|
|D29||Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2011-V42 -- 302591, 2201|
|461||SZTE Asteroid Program in Hungary, 3 in MPEC 2011-V42 -- 2011 VS5, 2011 MO4, 2005 YU55|
|233||San Vito Obs. in Italy, 3 in MPEC 2011-V42 -- 2005 YU55, 2004 JO2, 5143|
|147||Suno Obs. in Italy, 1 in MPEC 2011-V42 -- 2005 YU55|
|B18||Terskol Obs. in Russia, 1 in MPEC 2011-V42 -- 2011 US63|
|G69||Thousand Oaks Obs. in southern California, 1 in MPEC 2011-V42 -- 2005 YU55|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 15 November '11
Notes for Today's Latest Risk Assessments
|2011 PU1||JPL Sentry||1545||2063-2106||17||1.8e-04||-4.11||-4.46||0||JPL: "Analysis based on 55 observations spanning 45.352 days (2011-Aug-06.9677 to 2011-Sep-21.319885)." Diameter approximately 0.033 km. from mean, weighted H=25.1.|
|NEODyS||1545||2081-2088||4||1.69e-04||-4.15||-4.28||0||NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2011-08-06.968 to 2011-09-21.321."|
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 15 November '11
Times are UTC for when items were noted or added by The Tracking News.
|1545||Noted that JPL Sentry has updated its 2011 PU1 risk assessment - see above|
Noted that NEODyS has updated its 2011 PU1 risk assessment - see above
Grabbed MPEC 2011-V42 - Daily Orbit Update - see above
Noted that the NEOCP has become active