Contents  on 6 June '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 June '13

One object reported inside ten LD

One object is reported traveling inside ten lunar distances (LD) of our planet today. 2013 LD2 is inbound from 8.77 to 7.78 LD. No other objects are known to be approaching until late July.

This report was generated at 1406 UTC.



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.

Radar Astrometry  on 6 June '13

Radar observation of six objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 1908 UTC when the database was dated 6 June


Data update noted at 2023 UTC when the database was dated 6 June


Data update noted at 2202 UTC when the database was dated 6 June


Data update noted at 2301 UTC when the database was dated 6 June


Data update noted at 2359 UTC when the database was dated 6 June

NEOCP Activity  on 6 June '13

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2240 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, thirteen were "one nighters." The Tracking News counted a total of 21 listings on the NEOCP on this day.

New MPECs  on 6 June '13

Minor Planet Electronic Circulars

There were four MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-L30 - "18:18 UT" - 2013 LQ6


MPEC 2013-L29 - "13:32 UT" - 2012 TK123


<< DOU on 6 June '13 >>  MPEC 2013-L28 - "06:06 UT" - Daily Orbit Update


MPEC 2013-L27 - "04:02 UT" - 2011 RF

Observers  on 6 June '13

A total of 25 observers appeared in this day's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 6 in radar -- 2013 GJ69, 2013 FY13, 2013 EA, 2013 CZ87, 2009 SC15, 3752
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2013-L28 -- 2013 KM6, 2013 KL6, 2013 KK6, 2013 KH6, 2013 GC34, 2013 FY13, 2009 NE
C77Bernezzo Obs. in Italy, 3 in MPEC 2013-L28 -- 354952, 163249, 152756
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2013-L28 -- 2004 KH17, 88710, 7888
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2013-L28, 2013-L29 & 2013-L30 -- 2013 LQ6, 2013 LF1, 2013 LE1, 2013 LD1, 2013 LC1, 2013 LB1, 2013 LB, 2013 LA, 2012 TK123
Z83Chicharronian 3C Obs., 1 in MPEC 2013-L28 -- 285263
B50Corner Obs. in Germany, 1 in MPEC 2013-L28 -- 285263
K20Danastro Obs., 2 in MPEC 2013-L28 -- 2013 JB36, 137199
G32Elena Remote Obs., 1 in MPEC 2013-L28 -- 4660
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 3752
987Isle of Man Obs. on the Isle of Man, 1 in MPEC 2013-L28 -- 285263
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2013-L30 -- 2013 LQ6
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2013-L28 -- 2013 LC1
J131National Schools Obs. via the Liverpool Telescope in the Canary Islands, 2 in MPEC 2013-L28 -- 2013 JK22, 152756
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-L27 -- 2011 RF
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2013-L28 -- 2013 CU129
474Mt. John Obs. in New Zealand, 8 in MPEC 2013-L28 -- 2013 LB, 2013 LA, 2013 KN6, 2013 JT17, 2013 JL22, 2013 JB36, 2013 CN128, 2013 CL89
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2013-L28 -- 2013 KL6, 256412
A13Naef Obs. in Switzerland, 3 in MPEC 2013-L28 -- 2013 JR28, 2008 OX2, 285263
C23Olmen Obs. in Belgium, 1 in MPEC 2013-L28 -- 285263
557Ondrejov Obs. in the Czech Republic, 3 in MPEC 2013-L28 -- 242643, 163249, 4034
I41Palomar Transient Factory (PTF) in southern California, 2 in MPEC 2013-L28 -- 210012, 7977
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-L30 -- 2013 LQ6
C95SATINO-1 in France, 1 in MPEC 2013-L28 -- 2013 KN6
718Wiggins Obs. in Utah, 4 in MPEC 2013-L28 -- 2013 KN6, 2013 JR28, 2013 JB36, 7888
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-L28 -- 2013 KN6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 June '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2300 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 LC1NEODyS1404R E M O V E D-
JPL Sentry1404R E M O V E DJPL: Risk listing removed at 0955 UTC.

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 June '13

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

2359Noted Radar Astrometry database update - see above
2301Noted Radar Astrometry database update - see above
2202Noted Radar Astrometry database update - see above
2023Noted Radar Astrometry database update - see above
1908Grabbed MPEC 2013-L30 - 2013 LQ6 - see above
Noted Radar Astrometry database update - see above
1406Generated Traffic Report
1404Noted that JPL Sentry has removed 2013 LC1 as an impact risk - see above
Noted that NEODyS has removed 2013 LC1 as an impact risk - see above
Grabbed MPEC 2013-L27 - 2011 RF - see above
Grabbed MPEC 2013-L28 - Daily Orbit Update - see above
Grabbed MPEC 2013-L29 - 2012 TK123 - see above