Contents  on 17 July '13

Asteroid/Comet Connection (A/CC) Resources:

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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 17 July '13

No objects reported inside ten LD

No asteroids are reported moving within ten lunar distances (LD) of our planet today. Next known to be possibly approaching are 2006 BL8, which may arrive inside ten LD on July 24th (uncertainty +/- two days), and 2003 DZ15, maybe arriving on July 29th (+/- 26.5 hours).

This report was generated at 1550 UTC with first follow-up in today's DOU MPEC for departed 2013 NR13.



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 17 July '13

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, eight were "one nighters." The Tracking News counted a total of 39 listings on the NEOCP on this day.

New MPECs  on 17 July '13

Minor Planet Electronic Circulars

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


MPEC 2013-O17 - "23:59 UT" - 2013 OH


MPEC 2013-O16 - "23:55 UT" - 2013 OG


MPEC 2013-O15 - "23:52 UT" - 2013 OF


MPEC 2013-O14 - "23:48 UT" - 2013 NF19


MPEC 2013-O13 - "23:41 UT" - 2013 NE19


MPEC 2013-O12 - "20:17 UT" - 2012 XR134


<< DOU on 17 July '13 >>  MPEC 2013-O11 - "06:03 UT" - Daily Orbit Update


MPEC 2013-O10 - "04:14 UT" - 2011 WA96

Observers  on 17 July '13

A total of 24 observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 22 in MPECs 2013-O11, 2013-O12, 2013-O13, 2013-O14, 2013-O15, 2013-O16 & 2013-O17 -- 2013 OH, 2013 OG, 2013 OF, 2013 NV, 2013 NT11, 2013 NP11, 2013 NL10, 2013 NH10, 2013 NF19, 2013 NE19, 2013 NA15, 2013 MY6, 2013 MX5, 2013 MR6, 2013 ML3, 2013 JK22, 2013 GZ79, 2012 XR134, 2009 QZ6, 170013, 163364, 153002
I74Baxter Garden Obs. in England, 1 in MPEC 2013-O16 -- 2013 OG
309$program code "$" (13) via Cerro Paranal in Chile, 3 in MPEC 2013-O11 -- 54660, 5587, 2059
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 16 in MPEC 2013-O11 -- 2013 NX, 2013 NV6, 2013 NU, 2013 NR13, 2013 NQ8, 2013 NO11, 2013 NK4, 2013 NJ10, 2013 MQ, 2013 MP11, 2013 LM31, 2013 LK25, 2013 LC2, 2013 CN222, 2013 BF18, 2013 AU76
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-O16 -- 2013 OG
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2013-O16 -- 2013 OG
K20Danastro Obs., 1 in MPEC 2013-O11 -- 285263
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2013-O14 & 2013-O16 -- 2013 OG, 2013 NF19
F657Paul Roche in Wales via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-O12 -- 2012 XR134
J95Great Shefford Obs. in England, 4 in MPECs 2013-O13, 2013-O14, 2013-O15 & 2013-O16 -- 2013 OG, 2013 OF, 2013 NF19, 2013 NE19
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2013-O11 -- 2013 NE15
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2013-O11 -- 2013 NE15
K91LCOGT Sutherland A in South Africa, 4 in MPECs 2013-O11, 2013-O13 & 2013-O15 -- 2013 OF, 2013 NJ10, 2013 NH6, 2013 NE19
K92LCOGT Sutherland B in South Africa, 1 in MPEC 2013-O17 -- 2013 OH
K93LCOGT Sutherland C in South Africa, 1 in MPEC 2013-O15 -- 2013 OF
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2013-O10 & 2013-O11 -- 2013 LZ28, 2011 WA96
118Modra Obs. in Slovakia, 1 in MPEC 2013-O16 -- 2013 OG
F51Pan-STARRS 1 (PS1) in Hawaii, 21 in MPECs 2013-O11, 2013-O13, 2013-O14, 2013-O15, 2013-O16 & 2013-O17 -- 2013 OH, 2013 OG, 2013 OF, 2013 NF19, 2013 NE19, 2013 GY68, 2011 PW6, 2009 WE253, 2009 SU19, 2009 QO5, 30825, 257838, 220839, 194386, 16960, 152558, 142464, 136900, 100756, 3752, 2100
C95SATINO-1 in France, 2 in MPECs 2013-O11 & 2013-O16 -- 2013 OG, 2006 NL
H36Sandlot Obs. in Kansas, 3 in MPECs 2013-O12, 2013-O14 & 2013-O16 -- 2013 OG, 2013 NF19, 2012 XR134
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-O12 -- 2012 XR134
645Sloan Digital Sky Survey (SDSS) in New Mexico, 2 in MPEC 2013-O11 -- 357058, 354713
673!program code "!" (10) via Table Mtn. Obs. in southern California, 1 in MPEC 2013-O16 -- 2013 OG
A92Urseanu Obs. in Romania, 2 in MPEC 2013-O11 -- 243147, 9950
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 July '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 NE15JPL Sentry1529R E M O V E DJPL: Risk listing removed at 1029 UTC.
NEODyS1529R E M O V E D-
2013 NJ10JPL Sentry1529R E M O V E DJPL: Risk listing removed at 1030 UTC.
2013 NH6JPL Sentry1529206012.3e-07-5.53-5.530JPL: "Analysis based on 38 observations spanning 13.267 days (2013-Jul-03.642839 to 2013-Jul-16.909505)." Diameter approximately 0.072 km. from mean, weighted H=23.4.
NEODyS15292060-206014.35e-08-6.26-6.260NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2013-07-03.644 to 2013-07-16.910."
2013 ML3JPL Sentry1529210942.6e-07-5.65-5.850JPL: "Analysis based on 171 observations spanning 27.035 days (2013-Jun-19.27039 to 2013-Jul-16.305476)." Diameter approximately 0.120 km. from mean, weighted H=22.3.
NEODyS15292109-210922.81e-07-5.62-5.790NEODyS: "Based on 173 optical observations (of which 6 are rejected as outliers) from 2013-06-19.271 to 2013-07-16.306."

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 17 July '13

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

0028 7/18Grabbed MPEC 2013-O17 - 2013 OH - see above
2359Grabbed MPEC 2013-O13 - 2013 NE19 - see above
Grabbed MPEC 2013-O14 - 2013 NF19 - see above
Grabbed MPEC 2013-O15 - 2013 OF - see above
Grabbed MPEC 2013-O16 - 2013 OG - see above
2052Grabbed MPEC 2013-O12 - 2012 XR134 - see above
1550Generated Traffic Report
1529Noted that JPL Sentry has updated its 2013 ML3 risk assessment - see above
Noted that NEODyS has updated its 2013 ML3 risk assessment - see above
Noted that JPL Sentry has removed 2013 NE15 as an impact risk - see above
Noted that NEODyS has removed 2013 NE15 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 NH6 risk assessment - see above
Noted that NEODyS has updated its 2013 NH6 risk assessment - see above
Noted that JPL Sentry has removed 2013 NJ10 as an impact risk - see above
Grabbed MPEC 2013-O11 - Daily Orbit Update - see above
0415Grabbed MPEC 2013-O10 - 2011 WA96 - see above