Visualization of Orion manned asteroid mission. 
Credit: Lockheed Martin Space Systems.

NASA hosted a workshop 14-16 Nov. in San Diego, Calif. about an international vision for human space exploration. Josh Hopkins's presentation (PDF) argues that "The most practical way to reach more asteroids is not to invest in better spaceships, but in better telescopes for surveys and tracking," advocating support for amateur, educational, and professional participation. His Potentially Accessible Asteroids list is here with ephemerides. This Lockheed Martin artwork depicts an Orion spacecraft near an asteroid.


Contents  on 29 November '11

Resources:

The latest A/CC news is available via framed access, RSS news feed 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 29 November '11

The MPC's NEO Confirmation Page has 9 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nine objects listed. Of these, two were "one nighters." So far The Tracking News has counted a total of 31 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 29 November '11

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2011-W81 - "22:11 UT" - 2011 WR69


MPEC 2011-W80 - "18:24 UT" - Comet P/2011 W2 (Rinner)


MPEC 2011-W79 - "13:16 UT" - 2011 WP69


MPEC 2011-W78 - "13:14 UT" - 2011 WN69


MPEC 2011-W77 - "13:12 UT" - 2011 WL69


<< DOU on 29 Nov. '11 >>  MPEC 2011-W76 - "06:06 UT" - Daily Orbit Update

Observers  on 29 November '11

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2011-W76 -- 29075
G51Byrne Obs. in southern California, 1 in MPEC 2011-W76 -- 2011 WM46
160Castelmartini Obs. in Italy, 4 in MPEC 2011-W76 -- 2011 UU106, 2011 SR69, 2011 SL102, 138524
703Catalina Sky Survey (CSS) in Arizona, 8 in MPEC 2011-W76 -- 2007 WU4, 2006 VY13, 2005 UJ159, 85709, 162421, 141498, 138883, 9400
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPEC 2011-W76 -- 2011 WN15, 2011 WG44, 2011 WF44, 2011 WE44, 2011 WE32, 2011 WC44, 2011 WC39, 2011 SE108, 2011 OL51
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2011-W80 -- P/2011 W2
958Dax Obs. in France, 1 in MPEC 2011-W80 -- P/2011 W2
448Desert Moon Obs. in New Mexico, 7 in MPEC 2011-W76 -- 2011 WV2, 2011 WM2, 2011 WL2, 2011 WF44, 2011 WA, 159857, 141056
C81Dolomites Obs. in Italy, 1 in MPEC 2011-W76 -- 2011 WC44
639Dresden Obs. in Germany, 2 in MPEC 2011-W76 -- 53430, 209924
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2011-W81 -- 2011 WR69
F657Paul Roche in Wales via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-W78 -- 2011 WN69
157Frasso Sabino Obs. in Italy, 3 in MPEC 2011-W76 -- 2004 XM130, 2000 GG147, 10145
J95Great Shefford Obs. in England, 1 in MPEC 2011-W81 -- 2011 WR69
246KLENOT in the Czech Republic, 5 in MPECs 2011-W76, 2011-W78, 2011-W80 & 2011-W81 -- 2011 WR69, 2011 WN69, 2011 WG44, 2011 WE44, P/2011 W2
046Klet Obs. in the Czech Republic, 1 in MPEC 2011-W76 -- 2011 RR12
704LINEAR in New Mexico, 9 in MPEC 2011-W76 -- 2011 WE44, 2011 WC44, 2006 VY13, 85818, 305090, 219071, 142348, 141498, 1627
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2011-W76 -- 2011 UD256
130Lumezzane Obs. in Italy, 6 in MPEC 2011-W76 -- 2011 OL51, 2009 WR6, 2005 YU55, 2004 QB17, 2004 JO2, 208617
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2011-W77 & 2011-W78 -- 2011 WN69, 2011 WL69
C10Maisoncelles Obs. in France, 1 in MPEC 2011-W80 -- P/2011 W2
474Mt. John Obs. in New Zealand, 4 in MPECs 2011-W77, 2011-W78, 2011-W79 & 2011-W80 -- 2011 WP69, 2011 WN69, 2011 WL69, P/2011 W2
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2011-W76, 2011-W77, 2011-W78 & 2011-W81 -- 2011 WR69, 2011 WN69, 2011 WL69, 2011 UW158, 2011 SO25, 2011 BX18, 2001 UE5, 255071, 187026, 162038, 2212
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2011-W80 -- P/2011 W2
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPECs 2011-W76 & 2011-W79 -- 2011 WP69, 276786
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-W80 -- P/2011 W2
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2011-W80 -- P/2011 W2
461SZTE Asteroid Program in Hungary, 1 in MPEC 2011-W76 -- 2005 YU55
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2011-W78 -- 2011 WN69
H36Sandlot Obs. in Kansas, 3 in MPECs 2011-W79, 2011-W80 & 2011-W81 -- 2011 WR69, 2011 WP69, P/2011 W2
E12Siding Spring Survey in New South Wales, 1 in MPEC 2011-W76 -- 2005 UJ159
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2011-W76 -- 2007 LE, 88264
291Spacewatch 1.8m telescope in Arizona, 19 in MPECs 2011-W76, 2011-W78, 2011-W79 & 2011-W80 -- 2011 WP69, 2011 WO41, 2011 WN69, 2011 WL2, 2011 WL15, 2011 WH15, 2011 WF32, 2011 WE44, 2011 WD39, 2011 WB39, P/2011 W2, 2011 VP5, 2011 UX114, 2011 UG256, 2011 UE305, 2011 SF25, 2011 SB16, 2010 SO16, 1999 EE5
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2011-W80 -- P/2011 W2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 UTC, JPL unavailable)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 risk pages.
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
2011 WN69JPL Sentry15532038-210946.9e-07-6.69-6.930JPL: "Analysis based on 29 observations spanning 1.2305 days (2011-Nov-28.29095 to 2011-Nov-29.52141)." Diameter approximately 0.020 km. from mean, weighted H=26.2.
2011 WO41JPL Sentry1553202311.2e-09-4.03-4.030JPL: "Analysis based on 27 observations spanning 5.0385 days (2011-Nov-23.48092 to 2011-Nov-28.51941)." Diameter approximately 1.600 km. from mean, weighted H=16.6.
NEODyS15532023-2075126.69e-09-3.47-3.810NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2011-11-23.482 to 2011-11-28.520."
2011 WL2JPL Sentry15532102-210927.6e-08-5.35-5.630JPL: "Analysis based on 122 observations spanning 12.900 days (2011-Nov-16.31883 to 2011-Nov-29.21875)." Diameter approximately 0.240 km. from mean, weighted H=20.7.
NEODyS15532076-208023.69e-10-7.52-7.590NEODyS: "Based on 122 optical observations (of which 0 are rejected as outliers) from 2011-11-16.320 to 2011-11-29.220."
2011 UE305JPL Sentry1553210934.3e-06-3.83-3.860JPL: "Analysis based on 32 observations spanning 28.878 days (2011-Oct-30.46441 to 2011-Nov-28.34199)." Diameter approximately 0.170 km. from mean, weighted H=21.4.

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 29 November '11

Times are UTC for when items were noted or added by The Tracking News.

2302Grabbed MPEC 2011-W81 - 2011 WR69 - see above
1858Grabbed MPEC 2011-W80 - Comet P/2011 W2 (Rinner) - see above
1553Noted that JPL Sentry has updated its 2011 UE305 risk assessment - see above
Noted that JPL Sentry has updated its 2011 WL2 risk assessment - see above
Noted that NEODyS has reposted 2011 WL2 as an impact risk - see above
Noted that JPL Sentry has posted 2011 WN69 as an impact risk - see above
Noted that JPL Sentry has posted 2011 WO41 as an impact risk - see above
Noted that NEODyS has posted 2011 WO41 as an impact risk - see above
Grabbed MPEC 2011-W76 - Daily Orbit Update - see above
Grabbed MPEC 2011-W77 - 2011 WL69 - see above
Grabbed MPEC 2011-W78 - 2011 WN69 - see above
Grabbed MPEC 2011-W79 - 2011 WP69 - see above