Contents  on 26 October '13

NOTE:  The A/CC news pages will update less frequently than usual during the next few days.

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 26 October '13

One object reported inside ten LD

One asteroid is reported within a radius of ten lunar distances (LD) from our home world today. Intruder 2013 UX2 exits the Earth-Moon system, moving from 0.51 to 1.27 LD.

Next known to be approaching, newly announced intruder 2013 UV3 arrives inside ten LD tomorrow. 2013 UE1 comes inside ten LD on November 4th, then radar target 2001 AV43 arrives on November 6th and radar target 2013 NJ on November 19th.

This report was updated at 2350 UTC with new discovey 2013 UV3 (MPEC). This report was previously updated at 1655 UTC with anohter new discovery 2013 UT3 (MPEC), which is already departed. Today's first traffic report was generated at 1120 UTC with follow-up in today's DOU MPEC for departed objects 2013 UG1 and 2013 UB.



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 26 October '13

Radar observation of one object

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


Data update noted at 1052 UTC when the database was dated 25 Oct.

NEOCP Activity  on 26 October '13

The MPC's NEO Confirmation Page has 43 listings

When last checked at 2331 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 43 objects listed. Of these, seventeen were "one nighters." So far The Tracking News has counted a total of 74 listings on the NEOCP today.

New MPECs  on 26 October '13

Minor Planet Electronic Circulars

As of last check at 2331 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-U49 - "18:00 UT" - 2013 UV3


MPEC 2013-U48 - "11:56 UT" - 2013 UU3


MPEC 2013-U47 - "11:50 UT" - 2013 UT3


MPEC 2013-U46 - "11:45 UT" - 2013 US3


MPEC 2013-U45 - "11:39 UT" - 2013 UR3


<< DOU on 26 Oct. '13 >>  MPEC 2013-U44 - "06:04 UT" - Daily Orbit Update

Observers  on 26 October '13

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-U45 -- 2013 UR3
251Arecibo in Puerto Rico, 1 in radar -- 29075
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2013-U44, 2013-U46 & 2013-U49 -- 2013 UZ, 2013 UX, 2013 UV3, 2013 US3, 2013 UC, 2013 TV135, 2013 TC136, 2013 TB6
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2013-U44 & 2013-U45 -- 2013 UR3, 2013 TS4, 2013 RM43, 375505, 351278, 350751, 194126, 163014, 143678, 141052
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-U45 -- 2013 UR3
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2013-U45 -- 2013 UR3
958Dax Obs. in France, 1 in MPEC 2013-U45 -- 2013 UR3
448Desert Moon Obs. in New Mexico, 1 in MPEC 2013-U49 -- 2013 UV3
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPEC 2013-U44 -- 2013 UZ, 2013 SC25, 1990 UP
113Drebach Obs. in Germany, 1 in MPEC 2013-U46 -- 2013 US3
I48El Catalejo Obs. in Argentina, 1 in MPEC 2013-U45 -- 2013 UR3
E105Richard Miles in England via Faulkes Telescope South in New South Wales, 1 in MPEC 2013-U45 -- 2013 UR3
J95Great Shefford Obs. in England, 1 in MPEC 2013-U45 -- 2013 UR3
D00ISON-Kislovodsk Obs., 1 in MPEC 2013-U44 -- 2013 TE6
6951Marc W. Buie via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2013-U44 -- 2001 TY44, 162000
V37LCOGT Fort Davis in Texas, 1 in MPEC 2013-U48 -- 2013 UU3
K91LCOGT Sutherland A in South Africa, 1 in MPEC 2013-U45 -- 2013 UR3
C94MASTER-II Obs. Tunka in Russia, 1 in MPEC 2013-U44 -- 17511
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-U44 -- 2013 UB
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-U44 -- 2011 OR15
G96Mt. Lemmon Survey (MLS) in Arizona, 19 in MPECs 2013-U44, 2013-U46, 2013-U47 & 2013-U49 -- 2013 UY, 2013 UV3, 2013 UT3, 2013 US3, 2013 UC1, 2013 TS4, 2013 TQ5, 2013 TJ135, 2013 TC136, 2013 RM43, 2010 VD1, 2010 GY6, 2010 EH43, 2008 TD4, 2005 BW1, 374851, 374038, 26166, 163373
I41Palomar Transient Factory (PTF) in southern California, 3 in MPEC 2013-U44 -- 2013 SV24, 1990 UP, 3361
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2013-U44 & 2013-U48 -- 2013 UU3, 2013 TJ135, 2013 TB6, 2013 RM43, 2012 XR134, 2010 TN54, 2000 HW23, 354182, 351278, 276786, 253106, 162781, 5143
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPEC 2013-U44 -- 2013 UG1, 2013 TV135, 2013 TE6, 2013 TB80, 2013 SC25, 2013 RM43, 2010 GY6, 2009 WE253, 2008 HO3, 1990 UP, 251346, 242216, 10115, 3361
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2013-U45 -- 2013 UR3
L04ROASTERR-1 Obs., 1 in MPEC 2013-U44 -- 2013 TV135
Y00SONEAR Obs. in Brazil, 25 in MPEC 2013-U44 -- 2013 TB80, 2013 RM43, 2013 QG17, 2012 TS, 2008 KZ5, 2003 WX25, 371336, 368664, 360433, 351278, 350988, 269690, 24445, 17511, 169352, 162913, 162694, 142464, 138095, 10115, 6063, 3361, 2100, 1980, 1627
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-U44 -- 2013 TV135
C48Sayn Solar Obs. in Russia, 1 in MPEC 2013-U44 -- 2013 TV135
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2013-U44 -- 2013 TS4, 2008 TD4, 2002 WQ4, 374038, 143651
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2013-U44, 2013-U45, 2013-U46, 2013-U47, 2013-U48 & 2013-U49 -- 2013 UZ, 2013 UV3, 2013 UU3, 2013 UT3, 2013 US3, 2013 UR3, 2013 TV135, 2013 TF6, 2013 TD4, 2013 RH43, 2013 QJ48
926Tenagra II Obs. in Arizona, 2 in MPECs 2013-U48 & 2013-U49 -- 2013 UV3, 2013 UU3
718Wiggins Obs. in Utah, 1 in MPEC 2013-U44 -- 2013 TV135
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-U45 -- 2013 UR3
Q622program code 2 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-U45 -- 2013 UR3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 October '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 and JPL at 2331 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 TV135JPL Sentry23312032-204723.2e-05-1.44-1.441JPL: "Analysis based on 350 observations spanning 16.999 days (2013-Oct-08.85531 to 2013-Oct-25.85412)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
NEODyS10522032-204727.46e-05-1.07-1.071NEODyS: "Based on 353 optical observations (of which 3 are rejected as outliers) from 2013-10-08.856 to 2013-10-25.855."

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 26 October '13

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

2350Updated Traffic Report
2331Noted that JPL Sentry has updated its 2013 TV135 risk assessment - see above
Grabbed MPEC 2013-U49 - 2013 UV3 - see above
1216Grabbed MPEC 2013-U46 - 2013 US3 - see above
Grabbed MPEC 2013-U47 - 2013 UT3 - see above
Grabbed MPEC 2013-U48 - 2013 UU3 - see above
1146Grabbed MPEC 2013-U45 - 2013 UR3 - see above
1111Grabbed MPEC 2013-U44 - Daily Orbit Update - see above
1052Noted that NEODyS has updated its 2013 TV135 risk assessment - see above
Noted Radar Astrometry database update - see above