Visualization of manned asteroid mission. 
Credit: GWU/SPI-Ball Aero Target NEO flyer.

First noted on the Minor Planet Mailing List (MPML) is that slides have been posted from last month's Washington, D.C. open workshop, "Target NEO: Providing a Resilient NEO Accessibility Program for Human Exploration Beyond LEO." Included is a statement of Minor Planet Center support (PDF) that mentions its new NEOCP blog, sobering notes from Alan Harris about target availability (PDF), radar observation info (PDF), mention of suitports vs. airlocks, a space-based telescope proposal (PDF) to find find all visitable NEOs down to 30 meters within 540 days, and much more. Image from the GWU/SPI-Ball Aero workshop flyer.


Contents  on 2 March '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 2 March '11

The MPC's NEO Confirmation Page has 6 listings: 6 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of fifteen 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 2 March '11

Minor Planet Electronic Circulars

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


MPEC 2011-E10 - "19:53 UT" - 2010 JK1


MPEC 2011-E09 - "11:40 UT" - 2011 EK


MPEC 2011-E08 - "10:57 UT" - 2011 EJ


MPEC 2011-E07 - "09:41 UT" - 2011 EH


<< DOU on 2 Mar. '11 >>  MPEC 2011-E06 - "07:07 UT" - Daily Orbit Update


MPEC 2011-E05 - "00:22 UT" - 2011 EC


MPEC 2011-E04 - "00:18 UT" - 2011 EB

Observers  on 2 March '11

A total of 21 observers appear in today's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2011-E06 -- 3122
H21Astronomical Research Obs. Westfield in Illinois, 30 in MPECs 2011-E04, 2011-E06, 2011-E07, 2011-E08, 2011-E09 & 2011-E10 -- 2011 EK, 2011 EJ, 2011 EH, 2011 EB, 2011 DW, 2011 DV, 2011 DU9, 2011 DT9, 2011 DS9, 2011 DS, 2011 DO, 2011 DE5, 2011 DD5, 2011 CX7, 2011 CG2, 2011 BX11, 2011 BR15, 2011 BN59, 2011 BN24, 2011 BK24, 2011 BF39, 2011 BB19, 2011 AM24, 2011 AL52, 2011 AA23, 2010 WH, 2010 VX39, 2010 UX7, 2010 RN80, 2010 JK1
703Catalina Sky Survey (CSS) in Arizona, 20 in MPECs 2011-E05, 2011-E06, 2011-E08 & 2011-E09 -- 2011 EK, 2011 EJ, 2011 EC, 2011 CH71, 2011 CG71, 2011 CG2, 2003 TN1, 2000 EY106, 96315, 68350, 33342, 251346, 250620, 249886, 24445, 145656, 143381, 137125, 136617, 2102
639Dresden Obs. in Germany, 1 in MPEC 2011-E06 -- 2011 CH71
J95Great Shefford Obs. in England, 1 in MPEC 2011-E06 -- 2011 DV10
695_program code "_" (29) via Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPEC 2011-E06 -- 2010 XB11, 6239, 2212
704LINEAR in New Mexico, 7 in MPEC 2011-E06 -- 53435, 22771, 215167, 164400, 152931, 152671, 137084
J75La Sagra Obs. in Spain, 12 in MPEC 2011-E06 -- 2011 DU, 2011 BA12, 2005 EY169, 2004 EM20, 2000 CR101, 1999 TK12, 85990, 22771, 144332, 4954, 4401, 3554
H01Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2011-E04, 2011-E06, 2011-E07 & 2011-E08 -- 2011 EJ, 2011 EH, 2011 EB, 2011 DV, 2011 DU9, 2011 DS9, 2011 DS, 2011 DE5, 2010 QE2
711McDonald Obs. in Texas, 12 in MPECs 2011-E06, 2011-E08 & 2011-E09 -- 2011 EK, 2011 EJ, 2011 DU9, 2011 DS9, 2011 DS, 2011 BX18, 2011 BO24, 2011 BA12, 2010 QE2, 2007 VG184, 2002 JB9, 2001 QP181
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2011-E04, 2011-E05, 2011-E06, 2011-E07 & 2011-E08 -- 2011 EJ, 2011 EH, 2011 EC, 2011 EB, 2011 DV10, 2011 BA12, 22771, 154347
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2011-E06 -- 2011 DW, 2011 DT9, 2011 CY46, 2011 CH71, 2011 CG2, 2011 BO59, 1999 TK12, 36284
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPECs 2011-E04, 2011-E05 & 2011-E06 -- 2011 EC, 2011 EB, 2011 DL19
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-E08 -- 2011 EJ
E12Siding Spring Survey in New South Wales, 1 in MPEC 2011-E06 -- 2004 EK1
291Spacewatch 1.8m telescope in Arizona, 15 in MPEC 2011-E06 -- 2011 DU9, 2011 CQ4, 2011 CP4, 2011 CO2, 2011 CN2, 2011 CG22, 2011 BY18, 2011 BT15, 2011 BN59, 2011 BD40, 2010 XX72, 2007 DL8, 2002 XC91, 2002 NW16, 2001 CQ36
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPEC 2011-E06 -- 2011 DS9, 2011 CY46
C51WISE in Earth polar orbit, 34 in MPEC 2011-E06 -- 2010 GT7, 2010 GK23, 2010 EX11, 2010 EH20, 2010 DW1, 2010 DM56, 2010 DM21, 2010 DK34, 2010 DJ56, 2010 DH77, 2010 DH56, 2010 CP140, 2010 CN141, 2010 CN1, 2010 CH18, 2010 CG18, 2010 CD19, 2010 CC55, 2010 AG79, 2010 AB78, 2009 XE11, 2009 WO6, 2009 UX17, 2009 UP1, 2008 EV5, 2007 HX4, 2007 EP88, 2004 TB18, 2002 YF4, 2002 XG4, 2002 WZ2, 2002 NW16, 2000 WC67, 1996 GQ
G56Walnut Creek Obs. in northern California, 3 in MPEC 2011-E06 -- 2011 DS9, 2011 DO, 2011 AN16
198Wildberg Obs. in Germany, 1 in MPEC 2011-E09 -- 2011 EK
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2011-E06 -- 2011 DS9, 2011 CH71, 2011 BO59, 68350
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 March '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 UTC)
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 CLOMON (backup) 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 EJJPL Sentry1637211012.0e-09-7.64-7.640JPL: "Analysis based on 20 observations spanning 1.1118 days (2011-Mar-01.30602 to 2011-Mar-02.41785)." Diameter approximately 0.100 km. from mean, weighted H=22.6.
2011 EHJPL Sentry1637206019.6e-10-9.21-9.210JPL: "Analysis based on 20 observations spanning .96753 days (2011-Mar-01.25767 to 2011-Mar-02.2252)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
2011 ECJPL Sentry0226208615.0e-10-9.90-9.900JPL: "Analysis based on 15 observations spanning .26594 days (2011-Mar-01.39156 to 2011-Mar-01.6575)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
2011 EBNEODyS16382070-208986.82e-06-6.27-6.360NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2011-03-01.381 to 2011-03-01.744."
JPL Sentry01572022-2107139.7e-06-6.12-6.310JPL: "Analysis based on 18 observations spanning .36281 days (2011-Mar-01.38036 to 2011-Mar-01.74317)." Diameter approximately 0.014 km. from mean, weighted H=27.0.
2011 DV10JPL Sentry16372093-2109127.4e-08-7.13-7.270JPL: "Analysis based on 17 observations spanning 3.0806 days (2011-Feb-26.30148 to 2011-Mar-01.38207)." Diameter approximately 0.038 km. from mean, weighted H=24.8.
2011 DU9NEODyS16382041-205441.64e-04-4.50-4.510NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2011-02-27.018 to 2011-03-01.468."
JPL Sentry16372030-205961.7e-04-4.49-4.500JPL: "Analysis based on 37 observations spanning 2.4507 days (2011-Feb-27.01686 to 2011-Mar-01.46759)." Diameter approximately 0.016 km. from mean, weighted H=26.6.
2011 DS9NEODyS16382027-2088341.7e-06-3.17-3.530NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2011-02-25.929 to 2011-03-02.133."
JPL Sentry16372027-2108612.0e-06-3.15-3.550JPL: "Analysis based on 49 observations spanning 4.2047 days (2011-Feb-25.92799 to 2011-Mar-02.1327)." Diameter approximately 0.330 km. from mean, weighted H=20.1.
2011 DE5JPL Sentry1637R E M O V E DJPL: Risk listing removed at 1318 UTC.
2011 DVNEODyS16382063-207557.34e-07-4.23-4.420NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2011-02-22.517 to 2011-03-01.468."
JPL Sentry16372063-2108332.5e-06-3.80-4.350JPL: "Analysis based on 22 observations spanning 6.9510 days (2011-Feb-22.51614 to 2011-Mar-01.467111)." Diameter approximately 0.275 km. from mean, weighted H=20.5.
2011 DSNEODyS16382072-2087131.3e-05-6.17-6.350NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2011-02-23.400 to 2011-03-01.292."
JPL Sentry16372067-2110151.5e-05-6.12-6.360JPL: "Analysis based on 46 observations spanning 5.8918 days (2011-Feb-23.39905 to 2011-Mar-01.29081)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
2011 BT15NEODyS16382037-2090974.03e-05-3.12-3.450NEODyS: "Based on 61 optical observations (of which 3 are rejected as outliers) from 2011-01-24.290 to 2011-03-01.262."
JPL Sentry16372037-21101319.2e-05-2.80-3.450JPL: "Analysis based on 60 observations spanning 35.972 days (2011-Jan-24.28933 to 2011-Mar-01.26104)." Diameter approximately 0.150 km. from mean, weighted H=21.8.

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 2 March '11

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

2000Grabbed MPEC 2011-E10 - 2010 JK1 - see above
1638Noted that NEODyS has updated its 2011 BT15 risk assessment - see above
Noted that NEODyS has updated its 2011 DS risk assessment - see above
Noted that NEODyS has updated its 2011 DS9 risk assessment - see above
Noted that NEODyS has updated its 2011 DU9 risk assessment - see above
Noted that NEODyS has updated its 2011 DV risk assessment - see above
1637Noted that JPL Sentry has updated its 2011 BT15 risk assessment - see above
Noted that JPL Sentry has removed 2011 DE5 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 DS risk assessment - see above
Noted that JPL Sentry has updated its 2011 DS9 risk assessment - see above
Noted that JPL Sentry has updated its 2011 DU9 risk assessment - see above
Noted that JPL Sentry has updated its 2011 DV risk assessment - see above
Noted that JPL Sentry has updated its 2011 DV10 risk assessment - see above
Noted that NEODyS has posted 2011 EB as an impact risk - see above
Noted that JPL Sentry has posted 2011 EH as an impact risk - see above
Noted that JPL Sentry has posted 2011 EJ as an impact risk - see above
Grabbed MPEC 2011-E06 - Daily Orbit Update - see above
Grabbed MPEC 2011-E07 - 2011 EH - see above
Grabbed MPEC 2011-E08 - 2011 EJ - see above
Grabbed MPEC 2011-E09 - 2011 EK - see above
0226Noted that JPL Sentry has posted 2011 EC as an impact risk - see above
0157Noted that JPL Sentry has posted 2011 EB as an impact risk - see above
0050Grabbed MPEC 2011-E04 - 2011 EB - see above
Grabbed MPEC 2011-E05 - 2011 EC - see above