Contents  on 18 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 18 June '13

No objects reported inside ten LD

There are no objects reported inside a radius of ten lunar distances (LD) from the Earth today, and none are known to be approaching until late July.

This report was generated at 1355 UTC with follow-up in today's DOU MPEC for departed 2013 LD2.



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 18 June '13

The MPC's NEO Confirmation Page has 14 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fourteen objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of eighteen 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 18 June '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-M20 - "19:07 UT" - 2013 MR


MPEC 2013-M19 - "19:03 UT" - 2013 MQ


<< DOU on 18 June '13 >>  MPEC 2013-M18 - "06:08 UT" - Daily Orbit Update

Observers  on 18 June '13

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

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-M18 -- 2013 LM31
B88Bigmuskie Obs. in Italy, 1 in MPEC 2013-M18 -- 2013 LN31
G36CASADO in Spain, 1 in MPEC 2013-M18 -- 163249
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2013-M18 -- 2013 KJ6, 359592, 3752
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2013-M18 -- 2013 BC18, 2012 XH55
Z81Estrella de Mar Obs., 1 in MPEC 2013-M18 -- 2012 VN82
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-M18 -- 2013 LN31
157Frasso Sabino Obs. in Italy, 2 in MPEC 2013-M18 -- 2013 LB1, 2013 GZ79
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPEC 2013-M18 -- 2013 LM31, 2013 LL31, 2013 LG16
695^Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2013-M18 -- 2010 HZ108
K91LCOGT Sutherland A in South Africa, 3 in MPECs 2013-M18, 2013-M19 & 2013-M20 -- 2013 MR, 2013 MQ, 2002 NV16
C41MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2013-M18 -- 24445
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2013-M18 -- 2013 AD53, 2012 UR138
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2013-M18 -- 2013 LH16, 2013 KN6, 2008 KZ5
474Mt. John Obs. in New Zealand, 1 in MPEC 2013-M18 -- 2011 BJ2
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2013-M18 -- 2013 LV28, 2013 BC18, 2012 VN82, 2012 RG3, 54789
A13Naef Obs. in Switzerland, 2 in MPEC 2013-M18 -- 2009 BL2, 137199
G34Oberfrauendorf Obs., 2 in MPEC 2013-M18 -- 285263, 163249
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2013-M18, 2013-M19 & 2013-M20 -- 2013 MR, 2013 MQ, 2011 BT15, 2002 LT24
C95SATINO-1 in France, 1 in MPEC 2013-M18 -- 2013 KN6
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2013-M18 -- 163249
204Schiaparelli Obs. in Italy, 11 in MPECs 2013-M18, 2013-M19 & 2013-M20 -- 2013 MR, 2013 MQ, 2013 KN6, 2013 KL6, 2013 KJ6, 2013 KH6, 2013 KB2, 2013 JQ22, 2008 VN, 2008 KZ5, 2008 JP14
E12Siding Spring Survey in New South Wales, 1 in MPEC 2013-M18 -- 2013 LD2
G401program code 1 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-M18 -- 9950
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-M18 -- 2012 VN82
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2013-M18, 2013-M19 & 2013-M20 -- 2013 MR, 2013 MQ, 2013 LZ28, 2013 LG16, 2013 LB, 2013 KZ1, 2013 BC18, 2010 LE15, 2009 MS, 2009 FN28
6731program code 1 via Table Mtn. Obs. in southern California, 1 in MPEC 2013-M18 -- 163249
718Wiggins Obs. in Utah, 2 in MPEC 2013-M18 -- 163249, 7888
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-M18 -- 17188
Q624program code 4 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-M18 -- 4503
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 June '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 LZ28JPL Sentry1353206029.0e-07-4.63-4.660JPL: "Analysis based on 47 observations spanning 4.0781 days (2013-Jun-13.25363 to 2013-Jun-17.33176)." Diameter approximately 0.110 km. from mean, weighted H=22.4.
NEODyS13532060-209841.08e-06-4.56-4.580NEODyS: "Based on 49 optical observations (of which 3 are rejected as outliers) from 2013-06-13.254 to 2013-06-17.333."
2013 LG16JPL Sentry13532050-2111221.2e-06-3.23-3.240JPL: "Analysis based on 35 observations spanning 9.9635 days (2013-Jun-07.41346 to 2013-Jun-17.37691)." Diameter approximately 0.440 km. from mean, weighted H=19.5.
NEODyS13532050-205232.63e-06-2.85-3.110NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2013-06-07.414 to 2013-06-17.378."
2011 BT15NEODyS1353R 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 18 June '13

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

1948Grabbed MPEC 2013-M19 - 2013 MQ - see above
Grabbed MPEC 2013-M20 - 2013 MR - see above
1355Generated Traffic Report
1353Noted that NEODyS has removed 2011 BT15 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 LG16 risk assessment - see above
Noted that NEODyS has updated its 2013 LG16 risk assessment - see above
Noted that JPL Sentry has updated its 2013 LZ28 risk assessment - see above
Noted that NEODyS has updated its 2013 LZ28 risk assessment - see above
Grabbed MPEC 2013-M18 - Daily Orbit Update - see above