Contents  on 4 March '13

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 4 March '13

One object reported inside ten LD

There is one asteroid reported traveling within ten lunar distances (LD) of Earth today. Intruder 2013 EC dips into the Earth-Moon system, passing from 1.72 to 3.24 LD, reaching 0.96 LD at 0736 UT.

Up next, newly announced 2013 ET arrives inside ten LD tomorrow and risk-listed radar target 2007 EO88 is calculated with some uncertainty to arrive inside ten LD on March 15th.

This report was generated at 1554 UTC with new discovery 2013 ET (MPEC) and today's DOU MPEC with first follow-up for 2013 EC along with observation of 2013 DA1 and, from December, 2012 XE54 .



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. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 4 March '13

The MPC's NEO Confirmation Page has 12 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve 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 4 March '13

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 2013-E14 - "12:46 UT" - 2013 ET


MPEC 2013-E13 - "12:42 UT" - 2013 ES


MPEC 2013-E12 - "12:38 UT" - 2013 ER


MPEC 2013-E11 - "12:04 UT" - 2013 EQ


MPEC 2013-E10 - "11:44 UT" - 2013 EP


MPEC 2013-E09 - "11:32 UT" - 2013 CN222


<< DOU on 4 Mar. '13 >>  MPEC 2013-E08 - "06:04 UT" - Daily Orbit Update

Observers  on 4 March '13

A total of 29 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPECs 2013-E08, 2013-E10, 2013-E11, 2013-E12, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2013 ER, 2013 EQ, 2013 EP, 2013 DL1, 2013 CY129, 2013 CT82, 2013 CR35, 2013 CM118, 2013 AM60, 2012 XF112, 2011 DL19, 2009 FT, 2003 XE, 355046, 185853
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-E14 -- 2013 ET
300Bisei Spaceguard Center in Japan, 12 in MPECs 2013-E08, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2012 YO3, 2012 YN6, 2012 XE54, 2012 VF37, 99942, 351340, 203471, 163899, 11405, 3360
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2013-E08, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2013 AE69, 2012 QE50, 85990, 353947, 7480, 5693, 1864
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2013-E08, 2013-E10 & 2013-E14 -- 2013 ET, 2013 EP, 2013 EA, 2013 CN35, 2013 BE74, 2013 AQ27, 2012 YN6, 2012 SA22, 2012 QQ50, 2012 QO10, 2010 VA1, 1999 LS7
106Crni Vrh Obs. in Slovenia, 2 in MPECs 2013-E08 & 2013-E14 -- 2013 ET, 53550
958Dax Obs. in France, 2 in MPECs 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES
448Desert Moon Obs. in New Mexico, 5 in MPEC 2013-E08 -- 2013 AW60, 2012 QP17, 2009 DK46, 2009 BL2, 54401
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-E08 -- 2013 EA
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-E14 -- 2013 ET
J95Great Shefford Obs. in England, 6 in MPECs 2013-E08, 2013-E09, 2013-E10, 2013-E12, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2013 ER, 2013 EP, 2013 EC, 2013 CN222
C43Hoyerswerda Obs. in Germany, 2 in MPECs 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES
711McDonald Obs. in Texas, 1 in MPEC 2013-E09 -- 2013 CN222
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2013-E08, 2013-E09, 2013-E10 & 2013-E11 -- 2013 EQ, 2013 EP, 2013 CN222, 2005 EG94, 2005 DD, 162210, 159923
A13Naef Obs. in Switzerland, 4 in MPEC 2013-E08 -- 2013 CT36, 2005 RZ2, 85990, 25916
A24New Millennium Obs. in Italy, 1 in MPEC 2013-E14 -- 2013 ET
C23Olmen Obs. in Belgium, 1 in MPEC 2013-E14 -- 2013 ET
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2013-E08, 2013-E09 & 2013-E12 -- 2013 ER, 2013 CN222, 2008 CR118, 40267, 329669, 198752, 190161, 153243, 136923, 5693, 4486
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2013-E08 -- 2013 AU76, 214869
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2013-E08 -- 4450
K33San Defendente Obs., 1 in MPEC 2013-E14 -- 2013 ET
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-E13 -- 2013 ES
204Schiaparelli Obs. in Italy, 6 in MPECs 2013-E09, 2013-E10, 2013-E11, 2013-E12, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2013 ER, 2013 EQ, 2013 EP, 2013 CN222
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2013-E08 & 2013-E09 -- 2013 CN222, 68278
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2013-E08 & 2013-E11 -- 2013 EQ, 2013 DA1, 2013 CW83, 2013 CV129, 2013 CU83, 2013 CU82, 2013 CN129, 2013 BJ18
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2013-E10, 2013-E12, 2013-E13 & 2013-E14 -- 2013 ET, 2013 ES, 2013 ER, 2013 EP
926Tenagra II Obs. in Arizona, 2 in MPEC 2013-E08 -- 7480, 7474
198Wildberg Obs. in Germany, 2 in MPECs 2013-E12 & 2013-E14 -- 2013 ET, 2013 ER
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-E14 -- 2013 ET
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-E14 -- 2013 ET
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 March '13

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
2013 CL22NEODyS14282064-206428.86e-07-5.98-6.030NEODyS: "Based on 73 optical observations (of which 3 are rejected as outliers) from 2013-02-05.059 to 2013-03-02.535."

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 4 March '13

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

1554Generated Traffic Report
1428Noted that NEODyS has updated its 2013 CL22 risk assessment - see above
Grabbed MPEC 2013-E08 - Daily Orbit Update - see above
Grabbed MPEC 2013-E09 - 2013 CN222 - see above
Grabbed MPEC 2013-E10 - 2013 EP - see above
Grabbed MPEC 2013-E11 - 2013 EQ - see above
Grabbed MPEC 2013-E12 - 2013 ER - see above
Grabbed MPEC 2013-E13 - 2013 ES - see above
Grabbed MPEC 2013-E14 - 2013 ET - see above