Contents  on 6 May '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 6 May '13

No objects reported inside ten LD

No objects are reported to be within a radius of ten lunar distances (LD) from our home planet today, and none are known to be coming inside that "bubble" until late July.

This report was generated at 1505 UTC with follow-up in today's DOU MPEC for 2013 JF1.



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 6 May '13

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 26 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 6 May '13

Minor Planet Electronic Circulars

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


MPEC 2013-J22 - "11:31 UT" - 2013 JP4


MPEC 2013-J21 - "11:26 UT" - 2013 JO4


<< DOU on 6 May '13 >>  MPEC 2013-J20 - "06:05 UT" - Daily Orbit Update

Observers  on 6 May '13

A total of 26 observers appear in today's MPECs.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2013-J20 -- 242643
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-J22 -- 2013 JP4
300Bisei Spaceguard Center in Japan, 3 in MPECs 2013-J20, 2013-J21 & 2013-J22 -- 2013 JP4, 2013 JO4, 2013 HT15
I99Blanquita Obs. in Spain, 1 in MPEC 2013-J20 -- 242643
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2013-J20 & 2013-J22 -- 2013 JP4, 2013 JF1, 2013 HJ19, 2013 GZ79, 2011 WU95, 2008 GB110, 2006 WQ1, 2006 HB, 27346, 5332
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 17 in MPECs 2013-J20 & 2013-J22 -- 2013 JY2, 2013 JP4, 2013 JC, 2013 HJ19, 2013 HH19, 2013 GA80, 2013 EW27, 2013 EW108, 2013 EV89, 2013 AU27, 2012 XO111, 2012 VJ6, 2010 TN54, 2009 XF2, 2008 EM9, 2006 KY86, 2003 YO3
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2013-J22 -- 2013 JP4
J95Great Shefford Obs. in England, 3 in MPECs 2013-J20, 2013-J21 & 2013-J22 -- 2013 JP4, 2013 JO4, 2013 JE1
J37Huelva Obs. in Spain, 1 in MPEC 2013-J20 -- 1627
704LINEAR in New Mexico, 1 in MPEC 2013-J20 -- 1866
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-J21 -- 2013 JO4
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-J21 -- 2013 JO4
711McDonald Obs. in Texas, 1 in MPEC 2013-J21 -- 2013 JO4
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2013-J22 -- 2013 JP4
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2013-J20 & 2013-J21 -- 2013 JX2, 2013 JO4, 2010 TM3, 162900, 162011, 137925, 137911, 136795, 5332, 4486, 1916
C95SATINO-1 in France, 6 in MPEC 2013-J20 -- 2013 HJ19, 2013 GQ38, 242643, 144332, 7350, 4034
461SZTE Asteroid Program in Hungary, 1 in MPEC 2013-J21 -- 2013 JO4
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2013-J21 -- 2013 JO4
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-J21 -- 2013 JO4
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-J21 -- 2013 JO4
033Schwarzschild Obs. in Germany, 1 in MPEC 2013-J20 -- 2009 SQ104
E12Siding Spring Survey in New South Wales, 1 in MPEC 2013-J22 -- 2013 JP4
G401program code 1 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-J20 -- 242643
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-J20 -- 2013 GV68
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2013-J21 & 2013-J22 -- 2013 JP4, 2013 JO4
I42Westport Obs. in Massachusetts, 2 in MPEC 2013-J20 -- 2013 FY13, 2011 WU95
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 May '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 JE1JPL Sentry1504R E M O V E DJPL: Risk listing removed at 1150 UTC.
NEODyS1504R E M O V E D-

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 6 May '13

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

1505Generated Traffic Report
1504Noted that JPL Sentry has removed 2013 JE1 as an impact risk - see above
Noted that NEODyS has removed 2013 JE1 as an impact risk - see above
Grabbed MPEC 2013-J20 - Daily Orbit Update - see above
Grabbed MPEC 2013-J21 - 2013 JO4 - see above
Grabbed MPEC 2013-J22 - 2013 JP4 - see above