Contents  on 16 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 16 June '13

No objects reported inside ten LD

There are no asteroids reported within ten lunar distances (LD) of Earth today, and none are known to be approaching until late July.

This report was generated at 1301 UTC with follow-up in today's DOU MPEC for departed 2013 LD2 and observation of 2013 AT27 from February.

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 16 June '13

The MPC's NEO Confirmation Page has 23 listings

When last checked at 2323 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 23 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 30 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 16 June '13

Minor Planet Electronic Circulars

As of last check at 2323 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2013-M03 - "16:06 UT" - 2013 LH29

MPEC 2013-M02 - "16:02 UT" - 2013 LG29

<< DOU on 16 June '13 >>  MPEC 2013-M01 - "06:09 UT" - Daily Orbit Update

Observers  on 16 June '13

A total of 23 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2013-M01 -- 2013 LK7, 2013 LC2, 2013 LB2, 2013 KZ1, 2013 KN6, 2013 KM6, 2013 JK22
B88Bigmuskie Obs. in Italy, 1 in MPEC 2013-M01 -- 2013 LH16
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2013-M01 -- 2013 LH25, 2013 JR28, 2013 EU9, 85989, 163249, 3551
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 24 in MPECs 2013-M01 & 2013-M02 -- 2013 LT28, 2013 LK7, 2013 LH16, 2013 LG29, 2013 LE1, 2013 LD2, 2013 LC1, 2013 KL6, 2013 JX2, 2013 JT22, 2013 JB36, 2013 GU79, 2013 BQ45, 2012 VJ82, 2010 TN54, 2010 SO16, 2009 WR6, 2009 DM1, 2007 JF22, 2005 MC, 2003 OV, 2002 XZ38, 2002 AN11, 2000 GD147
K20Danastro Obs., 2 in MPEC 2013-M01 -- 285263, 137199
J19El Maestrat Obs. in Spain, 1 in MPEC 2013-M01 -- 285263
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2013-M01 -- 2002 NV16
844Los Molinos Obs. in Uruguay, 4 in MPEC 2013-M01 -- 163364, 7753, 4769, 2063
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2013-M01 -- 2013 BG27, 2013 AT27
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2013-M02 -- 2013 LG29
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2013-M01 & 2013-M03 -- 2013 LH29, 2009 DM1, 277830
I41Palomar Transient Factory (PTF) in southern California, 3 in MPEC 2013-M01 -- 2013 JK22, 210012, 1866
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2013-M01 & 2013-M02 -- 2013 LG29, 2013 GZ79, 2005 ND7, 163249
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2013-M01 -- 7753
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2013-M01 & 2013-M03 -- 2013 LH29, 2013 JR28
233San Vito Obs. in Italy, 1 in MPEC 2013-M01 -- 1866
B38Santa Mama Obs. in Italy, 2 in MPEC 2013-M01 -- 137170, 11405
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-M03 -- 2013 LH29
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2013-M01 -- 2013 LD2, 8013
G401program code 1 via Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-M01 -- 9950
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2013-M01 & 2013-M02 -- 2013 LK7, 2013 LG29, 2013 LE7
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2013-M03 -- 2013 LH29
I76Tesla Obs. in Spain, 1 in MPEC 2013-M01 -- 2013 JR28
718Wiggins Obs. in Utah, 3 in MPEC 2013-M01 -- 2013 JR28, 163249, 7888
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 June '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2323 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.





Notes for Today's Latest Risk Assessments
2013 LZ28NEODyS13002055-2089171.34e-06-4.47-4.560NEODyS: "Based on 43 optical observations (of which 3 are rejected as outliers) from 2013-06-13.254 to 2013-06-15.417."

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 16 June '13

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

1800Grabbed MPEC 2013-M02 - 2013 LG29 - see above
Grabbed MPEC 2013-M03 - 2013 LH29 - see above
1301Generated Traffic Report
1300Noted that NEODyS has posted 2013 LZ28 as an impact risk - see above
Grabbed MPEC 2013-M01 - Daily Orbit Update - see above