2010 Geminids composite from Dec. 13-14. 
Credit: NASA/MSFC/MEO-Danielle Moser.

Science@NASA reports that NASA's Meteoroid Environment Office (MEO) with its original three-camera all-sky network near Huntsville, Alabama will "soon have 15 cameras deployed east of the Mississippi River, with plans to expand nationwide." Using the new NASA Fireball Network pages, everyone can view videos and automated reports that may include orbit and ground path calculations from ASGARD software. The composite image above shows Geminid meteors above Marshall Space Flight Center last December, credit NASA/MSFC/MEO-Danielle Moser.


Contents  on 3 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 3 March '11

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. Of these, two were "one nighters." So far The Tracking News has counted a total of ten 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 3 March '11

Minor Planet Electronic Circulars

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


MPEC 2011-E19 - "23:07 UT" - 2011 EX4


MPEC 2011-E18 - "19:07 UT" - Observations and Orbits of Comets


<< DOU on 3 Mar. '11 >>  MPEC 2011-E17 - "07:07 UT" - Daily Orbit Update


MPEC 2011-E16 - "05:40 UT" - 2011 EW4


MPEC 2011-E15 - "05:35 UT" - 2011 EV4


MPEC 2011-E14 - "03:12 UT" - 2011 ET4


MPEC 2011-E13 - "03:07 UT" - 2011 ES4


MPEC 2011-E12 - "01:58 UT" - 2000 EB14


MPEC 2011-E11 - "01:23 UT" - 2007 ES

Observers  on 3 March '11

A total of 70 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 9 in MPEC 2011-E18 -- C/2011 C1, C/2011 A3, C/2010 B1, C/2009 Y1, C/2007 VO53, 240P, 103P, 73P, 43P
H21Astronomical Research Obs. Westfield in Illinois, 24 in MPECs 2011-E12, 2011-E13, 2011-E14, 2011-E17 & 2011-E19 -- 2011 EX4, 2011 ET4, 2011 ES4, 2011 DW, 2011 DV10, 2011 DV, 2011 DU9, 2011 DU, 2011 DT9, 2011 DS9, 2011 DS, 2011 DR, 2011 DO, 2011 DD5, 2011 BZ59, 2011 BX10, 2011 BL24, 2011 BK24, 2011 BJ24, 2011 AS26, 2011 AN16, 2010 XG3, 2010 RR179, 2000 EB14
J51Atlante Obs. in the Canary Islands, 4 in MPEC 2011-E18 -- 247P, 103P, 31P, 29P
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2011-E18 -- C/2010 FB87
300Bisei Spaceguard Center in Japan, 1 in MPEC 2011-E19 -- 2011 EX4
I99Blanquita Obs. in Spain, 1 in MPEC 2011-E18 -- 103P
B96Brixiis Obs. in Belgium, 4 in MPEC 2011-E18 -- 240P, 123P, 103P, 29P
235CAST Obs. in Italy, 6 in MPEC 2011-E18 -- C/2010 X1, C/2010 B1, C/2009 K5, 123P, 103P, 29P
B20Carmelita Obs. in Spain, 1 in MPEC 2011-E18 -- 103P
703Catalina Sky Survey (CSS) in Arizona, 17 in MPECs 2011-E14, 2011-E17 & 2011-E18 -- 2011 ET4, 2011 DS9, 2011 CH71, 2011 CG71, P/2011 A1, 2009 BH81, 2005 EY169, 2000 CR101, 85990, 215167, 4954, 246P, 162P, 152P, 117P, 73P, 71P
A77Chante-Perdrix Obs. in France, 6 in MPEC 2011-E18 -- 247P, 246P, 162P, 117P, 73P, 29P
J01Cielo Profundo Obs. in Spain, 11 in MPEC 2011-E18 -- P/2011 C2, C/2011 C1, C/2011 A3, P/2011 A2, P/2011 A1, C/2010 X1, C/2010 G2, C/2007 Q3, 247P, 103P, 29P
850Cordell-Lorenz Obs. in Tennessee, 5 in MPEC 2011-E18 -- C/2011 A3, C/2010 G2, 73P, 31P, 29P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2011-E18 -- 162P
958Dax Obs. in France, 16 in MPEC 2011-E18 -- C/2011 A3, P/2011 A1, C/2010 X1, P/2010 WK, C/2010 S1, C/2010 B1, C/2005 L3, 241P, 240P, 228P, 162P, 123P, 103P, 73P, 71P, 29P
113Drebach Obs. in Germany, 1 in MPEC 2011-E14 -- 2011 ET4
734Farpoint Obs. in Kansas, 2 in MPEC 2011-E17 -- 2011 DT9, 2000 EB14
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2011-E17 -- 2011 EJ
157Frasso Sabino Obs. in Italy, 1 in MPEC 2011-E18 -- C/2010 X1
372Geisei Obs. in Japan, 1 in MPEC 2011-E18 -- P/2011 C2
203GiaGa Obs. in Italy, 1 in MPEC 2011-E18 -- 247P
B83Gieres Obs. in France, 2 in MPEC 2011-E18 -- 103P, 29P
E94Gisborne Obs. in New Zealand, 1 in MPEC 2011-E18 -- 43P
J95Great Shefford Obs. in England, 1 in MPEC 2011-E12 -- 2000 EB14
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2011-E18 -- C/2010 FB87
A17Guidestar Obs. in Germany, 4 in MPECs 2011-E14, 2011-E17 & 2011-E19 -- 2011 EX4, 2011 ET4, 2011 DW, 2011 DO
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2011-E17 -- 2011 CH71, 2011 CG2
240Herrenberg Obs. in Germany, 2 in MPEC 2011-E17 -- 2005 GW119, 4688
H15ISON-NM Obs. in New Mexico, 3 in MPEC 2011-E18 -- C/2011 A3, P/2011 A1, 203P
857Iowa Robotic Obs. in Arizona, 1 in MPEC 2011-E18 -- 103P
585Kiev Comet Station in the Ukraine, 1 in MPEC 2011-E18 -- P/2010 WK
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 5 in MPEC 2011-E17 -- 2011 DU, 2011 DS9, 2011 CG2, 2011 BT15, 2009 FY4
704LINEAR in New Mexico, 12 in MPECs 2011-E17, 2011-E18 & 2011-E19 -- 2011 EX4, C/2010 X1, C/2010 G2, 2005 EY169, 48603, 18882, 3554, 241P, 240P, 203P, 31P, 29P
J31La Axarquia Obs. in Spain, 2 in MPEC 2011-E18 -- 103P, 29P
212La Dehesilla Obs. in Spain, 12 in MPEC 2011-E18 -- C/2011 A3, P/2011 A1, C/2010 X1, C/2010 B1, C/2009 K5, C/2005 L3, 247P, 241P, 103P, 71P, 31P, 29P
J75La Sagra Obs. in Spain, 7 in MPECs 2011-E17 & 2011-E18 -- C/2011 A3, C/2010 X1, 2010 VX39, 231P, 203P, 71P, 31P
J38La Vara Obs. in Spain, 6 in MPEC 2011-E18 -- C/2010 S1, C/2010 B1, 240P, 123P, 103P, 29P
130Lumezzane Obs. in Italy, 5 in MPEC 2011-E18 -- P/2010 U2, C/2010 KW7, 246P, 223P, 31P
B82Maidbronn Obs. in Germany, 11 in MPEC 2011-E18 -- C/2011 A3, C/2010 X1, P/2010 WK, C/2010 S1, 247P, 240P, 223P, 123P, 103P, 73P, 29P
C10Maisoncelles Obs. in France, 4 in MPEC 2011-E18 -- C/2011 A3, C/2010 X1, 73P, 29P
711McDonald Obs. in Texas, 5 in MPEC 2011-E17 -- 2011 DO, 2010 WJ, 2010 WH, 2008 UN90, 175706
945Monte Deva Obs. in Spain, 6 in MPEC 2011-E18 -- P/2010 WK, C/2010 B1, 240P, 123P, 103P, 29P
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2011-E11, 2011-E12, 2011-E13, 2011-E15, 2011-E16, 2011-E17 & 2011-E18 -- 2011 EW4, 2011 EV4, 2011 ES4, 2011 EK, 2011 BA12, 2009 BH81, 2007 ES, 2000 EB14, 9856, 2062, 137P, 31P
E07Murrumbateman Obs. in New South Wales, 9 in MPEC 2011-E18 -- C/2010 X1, C/2010 FB87, C/2010 B1, C/2009 T1, C/2009 F4, 103P, 43P, 31P, 29P
A13Naef Obs. in Switzerland, 4 in MPEC 2011-E17 -- 2011 BO59, 85990, 152889, 5189
J47Nazaret Obs. in Spain, 6 in MPEC 2011-E18 -- C/2010 X1, C/2009 K5, 240P, 103P, 71P, 29P
B49Paus Obs. in Spain, 3 in MPEC 2011-E18 -- P/2011 A1, 247P, 103P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 19 in MPECs 2011-E17 & 2011-E18 -- 2011 DW, 2011 DT9, 2011 DS9, 2011 CY46, 2011 CH71, 2011 BO59, C/2011 A3, P/2011 A2, P/2011 A1, C/2010 X1, P/2010 WK, C/2010 G2, C/2009 F2, C/2007 VO53, 3554, 247P, 123P, 103P, 29P
586Pic du Midi Obs. in France, 6 in MPECs 2011-E11, 2011-E12, 2011-E13, 2011-E14, 2011-E17 & 2011-E19 -- 2011 EX4, 2011 ET4, 2011 ES4, 2010 VN65, 2007 ES, 2000 EB14
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2011-E18 -- 31P
H06*Rolando Ligustri in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-E18 -- C/2010 X1
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 6 in MPEC 2011-E18 -- C/2011 C3, C/2010 R1, C/2010 L4, C/2010 L3, C/2010 DG56, P/2009 Y2
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPEC 2011-E18 -- C/2010 X1, C/2010 FB87, 43P
D90|H. Sato in Japan via RAS Obs. Moorook in South Australia, 1 in MPEC 2011-E18 -- C/2010 L5
473Remanzacco Obs. in Italy, 1 in MPEC 2011-E18 -- C/2008 FK75
H36Sandlot Obs. in Kansas, 1 in MPEC 2011-E19 -- 2011 EX4
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2011-E18 -- 29P
204Schiaparelli Obs. in Italy, 6 in MPECs 2011-E17 & 2011-E18 -- P/2011 C2, 2011 BO59, C/2010 G2, 2009 BH81, 2002 SZ, 2001 DQ8
510Siegen Obs. in Germany, 4 in MPECs 2011-E14, 2011-E17 & 2011-E18 -- 2011 ET4, 2011 CH71, C/2010 X1, 123P
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2011-E17 -- 2001 QP181, 86819, 31210, 250706, 159635
291Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2011-E14, 2011-E17 & 2011-E18 -- 2011 ET4, 2011 DV, 2011 DS, 2011 CX46, 2011 CO2, 2011 BY18, 2011 BB45, 2011 AS26, P/2011 A2, 2010 XZ67, 2010 XY82, 2002 XC91
A71Stixendorf Obs. in Austria, 4 in MPEC 2011-E18 -- P/2011 A2, 231P, 203P, 31P
B30Szamotuly-Galowo Obs. in Poland, 4 in MPEC 2011-E18 -- C/2010 S1, 240P, 123P, 103P
E24Tangra Obs. in New South Wales, 1 in MPEC 2011-E18 -- 103P
H10Tzec Maun Obs. Mayhill in New Mexico, 11 in MPECs 2011-E14, 2011-E17 & 2011-E18 -- 2011 ET4, 2011 DS9, C/2011 A3, P/2011 A2, C/2010 X1, P/2010 WK, 240P, 231P, 103P, 73P, 29P
D96Tzec Maun Obs. Moorook in South Australia, 4 in MPEC 2011-E18 -- C/2009 F4, C/2006 W3, 103P, 43P
H47Vicksburg Obs. in Mississippi, 7 in MPEC 2011-E18 -- C/2010 X1, C/2010 G2, C/2010 B1, C/2005 L3, 103P, 43P, 29P
B42Vitebsk Obs. in Belarus, 3 in MPEC 2011-E18 -- C/2005 L3, 247P, 240P
198Wildberg Obs. in Germany, 2 in MPECs 2011-E14 & 2011-E19 -- 2011 EX4, 2011 ET4
C42Xingming Obs. in China, 2 in MPECs 2011-E14 & 2011-E19 -- 2011 EX4, 2011 ET4
367Yatsuka Obs. in Japan, 12 in MPEC 2011-E18 -- C/2010 X1, P/2010 WK, C/2010 S1, C/2010 FB87, C/2010 B1, C/2009 Y1, C/2005 L3, 247P, 240P, 123P, 103P, 29P
J08Zonalunar Obs. in Spain, 2 in MPEC 2011-E18 -- C/2010 X1, 29P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 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 EW4JPL Sentry18112014-21101613.7e-07-5.10-5.490JPL: "Analysis based on 15 observations spanning .89091 days (2011-Mar-02.32289 to 2011-Mar-03.2138)." Diameter approximately 0.080 km. from mean, weighted H=23.1.
NEODyS18112014-2090717.68e-08-5.63-6.20NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2011-03-02.324 to 2011-03-03.215."
2011 ES4NEODyS18112020-2090732.22e-05-4.73-5.10NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2011-03-02.199 to 2011-03-02.973."
JPL Sentry05492020-21102605.0e-05-4.46-4.890JPL: "Analysis based on 31 observations spanning .77422 days (2011-Mar-02.19847 to 2011-Mar-02.97269)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
2011 EJJPL Sentry1811R E M O V E DJPL: Risk listing removed at 1137 UTC.
2011 DV10JPL Sentry18112093-210621.0e-07-6.99-6.990JPL: "Analysis based on 20 observations spanning 3.9471 days (2011-Feb-26.30148 to 2011-Mar-02.248561)." Diameter approximately 0.036 km. from mean, weighted H=24.8.
2011 DU9JPL Sentry18112030-205952.2e-04-4.37-4.380JPL: "Analysis based on 40 observations spanning 3.3959 days (2011-Feb-27.01686 to 2011-Mar-02.412762)." Diameter approximately 0.016 km. from mean, weighted H=26.6.
NEODyS18112041-205452.14e-04-4.38-4.390NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2011-02-27.018 to 2011-03-02.414."
2011 DS9JPL Sentry18112027-2104319.2e-07-3.54-3.870JPL: "Analysis based on 67 observations spanning 5.3132 days (2011-Feb-25.92799 to 2011-Mar-03.24118)." Diameter approximately 0.310 km. from mean, weighted H=20.2.
NEODyS18112027-2088258.2e-07-3.55-3.850NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2011-02-25.929 to 2011-03-03.242."
2011 DVJPL Sentry18112063-2103242.2e-06-3.82-4.220JPL: "Analysis based on 30 observations spanning 8.0001 days (2011-Feb-22.51614 to 2011-Mar-02.51624)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS18112063-209048.33e-07-4.19-4.320NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2011-02-22.517 to 2011-03-02.517."
2011 DSJPL Sentry18112065-2109171.7e-05-6.08-6.330JPL: "Analysis based on 52 observations spanning 7.0772 days (2011-Feb-23.39905 to 2011-Mar-02.47627)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
NEODyS18112065-208381.42e-05-6.15-6.330NEODyS: "Based on 52 optical observations (of which 0 are rejected as outliers) from 2011-02-23.400 to 2011-03-02.477."
2011 BT15JPL Sentry18112037-21101138.9e-05-2.83-3.360JPL: "Analysis based on 63 observations spanning 37.839 days (2011-Jan-24.28933 to 2011-Mar-03.12852)." Diameter approximately 0.150 km. from mean, weighted H=21.7.
NEODyS18112037-2090913.61e-05-3.18-3.410NEODyS: "Based on 64 optical observations (of which 3 are rejected as outliers) from 2011-01-24.290 to 2011-03-03.129."

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 3 March '11

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

2359Grabbed MPEC 2011-E19 - 2011 EX4 - see above
1914Grabbed MPEC 2011-E18 - Observations and Orbits of Comets - see above
1811Noted that JPL Sentry has updated its 2011 BT15 risk assessment - see above
Noted that NEODyS has updated its 2011 BT15 risk assessment - see above
Noted that JPL Sentry has updated its 2011 DS risk assessment - see above
Noted that NEODyS has updated its 2011 DS risk assessment - see above
Noted that JPL Sentry has updated its 2011 DS9 risk assessment - see above
Noted that NEODyS has updated its 2011 DS9 risk assessment - see above
Noted that JPL Sentry has updated its 2011 DU9 risk assessment - see above
Noted that NEODyS has updated its 2011 DU9 risk assessment - see above
Noted that JPL Sentry has updated its 2011 DV risk assessment - see above
Noted that NEODyS has updated its 2011 DV risk assessment - see above
Noted that JPL Sentry has updated its 2011 DV10 risk assessment - see above
Noted that JPL Sentry has removed 2011 EJ as an impact risk - see above
Noted that NEODyS has posted 2011 ES4 as an impact risk - see above
Noted that JPL Sentry has posted 2011 EW4 as an impact risk - see above
Noted that NEODyS has posted 2011 EW4 as an impact risk - see above
Grabbed MPEC 2011-E17 - Daily Orbit Update - see above
0549Noted that JPL Sentry has posted 2011 ES4 as an impact risk - see above
0547Grabbed MPEC 2011-E15 - 2011 EV4 - see above
Grabbed MPEC 2011-E16 - 2011 EW4 - see above
0343Grabbed MPEC 2011-E14 - 2011 ET4 - see above
0314Grabbed MPEC 2011-E13 - 2011 ES4 - see above
0226Grabbed MPEC 2011-E12 - 2000 EB14 - see above
0157Grabbed MPEC 2011-E11 - 2007 ES - see above