Contents  on 15 October '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 15 October '13

Three objects reported inside ten LD

Three objects are reported to be within ten lunar distances (LD) of our planet today, all of them headed away from Earth. 2013 TM127 is outbound from 3.95 to 5.95 LD, risk-listed 2013 TX68 from 7.53 to 9.99 LD, and risk-listed intruder 2013 RZ53 from 8.76 to 9.10 LD.

Radar target 2001 AV43 arrives inside ten LD on November 6th and radar target 2013 NJ arrives on November 19th.

This report was generated at 1534 UTC with first follow-up in today's DOU MPEC for departed risk-listed 2013 TV132.

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 15 October '13

The MPC's NEO Confirmation Page has 9 listings

When last checked at 2357 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nine objects listed. Of these, four were "one nighters." So far The Tracking News has counted a total of 23 listings on the NEOCP today.

New MPECs  on 15 October '13

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2013-T117 - "22:33 UT" - 2013 TU135

MPEC 2013-T116 - "22:28 UT" - 2013 TT135

<< OOC on 15 Oct. '13 >> MPEC 2013-T115 - "17:51 UT" - Observations and Orbits of Comets

MPEC 2013-T114 - "16:47 UT" - 2013 TS135

MPEC 2013-T113 - "16:43 UT" - 2013 TR135

MPEC 2013-T112 - "16:38 UT" - 2013 TQ135

<< DOU on 15 Oct. '13 >>  MPEC 2013-T111 - "06:07 UT" - Daily Orbit Update

Observers  on 15 October '13

A total of 24 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2013-T111, 2013-T113, 2013-T114 & 2013-T116 -- 2013 TT135, 2013 TS135, 2013 TR135, 2013 TL135
G30Casselman Obs., 2 in MPEC 2013-T115 -- C/2012 S1, 2P
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2013-T111, 2013-T116 & 2013-T117 -- 2013 TU135, 2013 TT135, 2013 TE, 2013 SW24, 2009 HB, 2007 TC66, 85628, 53550, 354182, 254419, 251346, 162566, 5143
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2013-T111 -- 2013 TS132, 2005 VR, 2005 SC71, 2002 AW11
A58Chalandray-Canotiers Obs. in France, 1 in MPEC 2013-T115 -- C/2012 K1
A77Chante-Perdrix Obs. in France, 1 in MPEC 2013-T115 -- 2P
J95Great Shefford Obs. in England, 2 in MPECs 2013-T116 & 2013-T117 -- 2013 TU135, 2013 TT135
987Isle of Man Obs. on the Isle of Man, 1 in MPEC 2013-T115 -- 2P
C32Ka-Dar Obs. TAU Station in Russia, 1 in MPEC 2013-T111 -- 2013 TB80
168Kourovskaya Obs. in Russia, 2 in MPEC 2013-T115 -- C/2012 F6, C/2011 L4
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2013-T111 -- 2013 TH135
K92LCOGT Sutherland B in South Africa, 2 in MPECs 2013-T113 & 2013-T114 -- 2013 TS135, 2013 TR135
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-T112 -- 2013 TQ135
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-T111 -- 3908
B67Mirasteilas Obs. in Switzerland, 3 in MPECs 2013-T111 & 2013-T115 -- C/2012 S1, 251346, 3361
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2013-T111, 2013-T112, 2013-T113, 2013-T114 & 2013-T117 -- 2013 TU135, 2013 TS135, 2013 TR135, 2013 TQ135, 2009 FU4, 2006 VQ13, 283729, 162694
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-T111 -- 251346
D29Purple Mtn. Obs. Xuyi Station in China, 4 in MPEC 2013-T111 -- 2013 SO19, 2013 SG25, 17511, 162273
Y00SONEAR Obs. in Brazil, 21 in MPEC 2013-T111 -- 2013 TB80, 2013 RM43, 2013 PV6, 2012 ER14, 2011 WU95, 2008 KZ5, 2008 HB38, 2003 WX25, 65733, 368664, 351278, 350988, 168378, 162980, 162913, 159699, 6063, 5863, 3361, 1980, 1627
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-T117 -- 2013 TU135
G403program code 3 via Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-T111 -- 3361
G404program code 4 via Canary Islands Obs. in the Canary Islands, 3 in MPECs 2013-T111 & 2013-T115 -- 2013 TB80, C/2012 S1, 2P
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2013-T111 & 2013-T115 -- C/2013 TW5, C/2009 S3, 30825
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2013-T111, 2013-T112, 2013-T113 & 2013-T116 -- 2013 TV132, 2013 TT135, 2013 TR135, 2013 TQ135, 2013 RL21, 2009 WZ104
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2013-T115 -- C/2013 R1, C/2012 S1, C/2012 J1, C/2009 F4, 119P, 84P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 October '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 TV132JPL Sentry15302099-211151.3e-06-6.96-7.530JPL: "Analysis based on 25 observations spanning 2.8340 days (2013-Oct-12.39906 to 2013-Oct-15.23304)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS15302097-211158.99e-07-7.11-7.210NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2013-10-12.400 to 2013-10-15.234."

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 15 October '13

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

2357Grabbed MPEC 2013-T115 - Observations and Orbits of Comets - see above
Grabbed MPEC 2013-T116 - 2013 TT135 - see above
Grabbed MPEC 2013-T117 - 2013 TU135 - see above
1700Grabbed MPEC 2013-T112 - 2013 TQ135 - see above
Grabbed MPEC 2013-T113 - 2013 TR135 - see above
Grabbed MPEC 2013-T114 - 2013 TS135 - see above
1534Generated Traffic Report
1530Noted that JPL Sentry has updated its 2013 TV132 risk assessment - see above
Noted that NEODyS has updated its 2013 TV132 risk assessment - see above
Grabbed MPEC 2013-T111 - Daily Orbit Update - see above