Contents  on 19 March '12

Asteroid/Comet Connection (A/CC) 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.

Traffic Report  on 19 March '12

Nine objects reported inside ten LD

Nine objects are reported within ten lunar distances (LD) of our planet today. Risk-listed 2012 EK5 enters ten LD, moving from 12.6 to 9.7 LD* and 2012 EO8 is inbound from 8.44 to 6.02 LD, while the others are all outbound: 2012 EN5 moves from 7.06 to 9.24 LD, 2012 EL8 from 7.6 to 7.8 LD*, 2012 EJ5 from 7.74 to 8.43 LD, 2012 FM from 8.38 to 8.77 LD, risk-listed radar target 2012 DW60 from 8.41 to 9.62 LD, 2012 FN from 9.2 to 9.7 LD*, and radar target 2012 DH54 exits ten LD, passing from 9.79 to 10.81 LD.

Up next, intruder 2012 EG5 (risk-listed radar target) arrives inside ten LD on March 27th and 2007 HV4 comes inside on April 14th.

This report was posted at 1502 UTC with follow-up in today's DOU MPEC for 2012 EN10, 2012 EO8, and 2012 EG5.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Object distances are interpreted by A/CC from JPL Horizons data. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 19 March '12

The MPC's NEO Confirmation Page has 11 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eleven objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of nineteen 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 19 March '12

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 2012-F43 - "18:05 UT" - 2011 KP36


MPEC 2012-F42 - "18:00 UT" - 2011 AC72


MPEC 2012-F41 - "17:46 UT" - 2010 RE64


MPEC 2012-F40 - "15:07 UT" - 2010 GE30 = 2012 FH


MPEC 2012-F39 - "11:05 UT" - 2012 FR1


MPEC 2012-F38 - "11:03 UT" - 2012 FQ1


<< DOU on 19 Mar. '12 >>  MPEC 2012-F37 - "06:02 UT" - Daily Orbit Update

Observers  on 19 March '12

A total of 27 observers appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2012-F37 -- 2012 EO8
J16An Carraig Obs. in Northern Ireland, 3 in MPEC 2012-F37 -- 2012 EO8, 2012 EK8, 2012 BC20
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPEC 2012-F37 -- 2012 EQ3, 2012 EQ10, 2012 EO8, 2012 EO5, 2012 EN10, 2012 EL5, 2012 EG5, 2012 DX75, 2000 DK8
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2012-F37 -- 141018
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2012-F37 -- 7341
160Castelmartini Obs. in Italy, 4 in MPEC 2012-F37 -- 312942, 275558, 267221, 263976
703Catalina Sky Survey in Arizona, 1 in MPEC 2012-F39 -- 2012 FR1
807/program code "/" (24) via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-F41 -- 2010 RE64
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPECs 2012-F37 & 2012-F39 -- 2012 FR1, 2012 FJ, 2012 ET14, 2012 EM8
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2012-F39 -- 2012 FR1
157Frasso Sabino Obs. in Italy, 2 in MPEC 2012-F37 -- 2012 EO5, 2012 EK8
C73Galati Obs. in Romania, 10 in MPEC 2012-F37 -- 2012 FJ, 2012 EO8, 2012 EL5, 2012 BC20, 2004 FF29, 85839, 32906, 302830, 6455, 3352
J95Great Shefford Obs. in England, 4 in MPECs 2012-F37 & 2012-F38 -- 2012 FQ1, 2012 EO8, 2012 EG5, 2012 EA12
046Klet Obs. in the Czech Republic, 11 in MPEC 2012-F37 -- 2012 EO8, 2012 EO5, 2012 EL5, 2012 EK8, 2012 DX75, 2012 DK61, 2012 DH4, 2012 CA55, 2012 BJ134, 2012 AA11, 163243
304Las Campanas Obs. in Chile, 1 in MPEC 2012-F41 -- 2010 RE64
844Los Molinos Obs. in Uruguay, 2 in MPEC 2012-F37 -- 2012 DO, 308127
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2012-F37, 2012-F38 & 2012-F39 -- 2012 FR1, 2012 FQ1, 101955
C91Montevenere Obs., 1 in MPEC 2012-F37 -- 2012 AA11
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-F38 -- 2012 FQ1
J93Mt. Tuffley Obs. in England, 3 in MPEC 2012-F37 -- 141018, 6455, 3352
A24New Millennium Obs. in Italy, 10 in MPEC 2012-F37 -- 2012 CA55, 2012 BJ134, 2012 AA11, 2011 XO3, 85839, 32906, 155336, 154269, 143651, 138359
J69North Obs. in England, 5 in MPEC 2012-F37 -- 2012 EO8, 2012 EL5, 2012 EK8, 2012 DH4, 2012 BJ134
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-F42 -- 2011 AC72
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-F43 -- 2011 KP36
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-F39 -- 2012 FR1
204Schiaparelli Obs. in Italy, 4 in MPEC 2012-F37 -- 2012 DN14, 2005 FD, 2004 FF29, 1998 FF14
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-F42 -- 2011 AC72
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2012-F37 -- 2012 DH4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 March '12

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 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
2012 FR1JPL Sentry15012024-2109431.4e-07-3.36-3.670JPL: "Analysis based on 22 observations spanning 2.8321 days (2012-Mar-16.40434 to 2012-Mar-19.23643)." Diameter approximately 0.596 km. from mean, weighted H=18.8.
2012 FQ1JPL Sentry15012021-2106274.1e-07-3.35-3.810JPL: "Analysis based on 17 observations spanning 2.7955 days (2012-Mar-16.16837 to 2012-Mar-18.96386)." Diameter approximately 0.498 km. from mean, weighted H=19.2.
2012 ET14JPL Sentry15012029-208076.5e-09-3.41-3.740JPL: "Analysis based on 29 observations spanning 2.8377 days (2012-Mar-15.21007 to 2012-Mar-18.04772)." Diameter approximately 1.300 km. from mean, weighted H=17.0.
NEODyS15012021-204543.08e-09-3.59-3.870NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2012-03-15.211 to 2012-03-18.048."
2012 EG5JPL Sentry1501204817.8e-10-8.68-8.680JPL: "Analysis based on 46 observations spanning 5.6167 days (2012-Mar-13.30201 to 2012-Mar-18.91868)." Diameter approximately 0.049 km. from mean, weighted H=24.2.
NEODyS15012090-209011.52e-09-8.73-8.730NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2012-03-13.303 to 2012-03-18.919."

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 19 March '12

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

1816Grabbed MPEC 2012-F41 - 2010 RE64 - see above
Grabbed MPEC 2012-F42 - 2011 AC72 - see above
Grabbed MPEC 2012-F43 - 2011 KP36 - see above
1601Grabbed MPEC 2012-F40 - 2010 GE30 = 2012 FH - see above
1502Posted Traffic Report
1501Noted that JPL Sentry has updated its 2012 EG5 risk assessment - see above
Noted that NEODyS has updated its 2012 EG5 risk assessment - see above
Noted that JPL Sentry has updated its 2012 ET14 risk assessment - see above
Noted that NEODyS has updated its 2012 ET14 risk assessment - see above
Noted that JPL Sentry has posted 2012 FQ1 as an impact risk - see above
Noted that JPL Sentry has posted 2012 FR1 as an impact risk - see above
Grabbed MPEC 2012-F37 - Daily Orbit Update - see above
Grabbed MPEC 2012-F38 - 2012 FQ1 - see above
Grabbed MPEC 2012-F39 - 2012 FR1 - see above