Contents  on 24 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 24 October '13

One object reported inside ten LD

Only one little asteroid is reported to be located inside ten lunar distances (LD) of Earth today. Radar target 2013 UB is outbound from 8.24 to 9.98 LD.

2013 UE1 comes inside ten LD on November 5th, radar target 2001 AV43 arrives on November 6th, and radar target 2013 NJ on November 19th.

This report was updated at 2333 UTC with new discovery 2013 UR1 (MPEC), an already departed small, risk-listed intruder that passed between the Earth and Moon on October 21st. Today's first traffic report was generated at 1434 UTC with follow-up in today's DOU MPEC for 2013 UE1 and departed objects 2013 TV132 (adding 8.155 days to a 2.834-day observing arc for this risk-listed object) and 2013 UG1.



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 24 October '13

The MPC's NEO Confirmation Page has 60 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 60 objects listed. Of these, 29 were "one nighters." So far The Tracking News has counted a total of 83 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 24 October '13

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-U37 - "20:39 UT" - 2013 UU1


MPEC 2013-U36 - "20:34 UT" - 2013 US1


MPEC 2013-U35 - "20:28 UT" - 2013 UR1


MPEC 2013-U34 - "20:21 UT" - 2013 UQ1


MPEC 2013-U33 - "20:14 UT" - 2013 UP1


<< DOU on 24 Oct. '13 >>  MPEC 2013-U32 - "06:03 UT" - Daily Orbit Update

Observers  on 24 October '13

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
H17Angel Peaks Obs. in Colorado, 1 in MPEC 2013-U32 -- 2013 UG1
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2013-U32 -- 2013 TV135
B96Brixiis Obs. in Belgium, 1 in MPEC 2013-U32 -- 2013 UG1
703Catalina Sky Survey (CSS) in Arizona, 11 in MPEC 2013-U32 -- 2013 RM43, 2013 RH74, 2011 QD48, 2009 SK1, 53550, 39565, 254417, 251346, 162980, 10115, 4183
G58Chabot Obs. in northern California, 2 in MPECs 2013-U32 & 2013-U33 -- 2013 UZ, 2013 UP1
970Chelmsford Obs. in England, 1 in MPEC 2013-U32 -- 2013 UD1
0953S. Nazarov via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2013-U32 -- 2013 TV135
958Dax Obs. in France, 1 in MPEC 2013-U32 -- 2013 UG1
448Desert Moon Obs. in New Mexico, 6 in MPEC 2013-U32 -- 2013 TL135, 2013 TE6, 2013 TE135, 2005 XJ8, 68031, 250620
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-U32 -- 2013 UG1
113Drebach Obs. in Germany, 1 in MPEC 2013-U34 -- 2013 UQ1
639Dresden Obs. in Germany, 1 in MPEC 2013-U32 -- 1981
734Farpoint Obs. in Kansas, 2 in MPEC 2013-U32 -- 2013 TV135, 2013 TE
J95Great Shefford Obs. in England, 5 in MPECs 2013-U32, 2013-U33, 2013-U34, 2013-U35 & 2013-U36 -- 2013 US1, 2013 UR1, 2013 UQ1, 2013 UP1, 2013 TV135
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-U32 -- 2013 TB80
695^Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2013-U32 -- 2013 AX52
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-U32 -- 2005 TB15
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2013-U32, 2013-U34, 2013-U35 & 2013-U36 -- 2013 US1, 2013 UR1, 2013 UQ1, 2013 TK4, 2013 RL21, 2010 VD1, 2010 SG15, 2008 WN2, 30825, 292220
C23Olmen Obs. in Belgium, 1 in MPEC 2013-U32 -- 2012 ER14
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2013-U32 -- 2100
I41Palomar Transient Factory (PTF) in southern California, 3 in MPEC 2013-U32 -- 2008 HB38, 88710, 10115
F51Pan-STARRS 1 (PS1) in Hawaii, 8 in MPECs 2013-U32, 2013-U33 & 2013-U37 -- 2013 UU1, 2013 UP1, 2013 TT135, 2013 SO19, 2005 RO33, 275677, 190788, 5143
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2013-U32 -- 2013 UG1, 2010 GY6, 2009 WE253, 2008 HO3, 8014, 1981
L04ROASTERR-1 Obs., 1 in MPEC 2013-U32 -- 361071
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2013-U34 -- 2013 UQ1
589Santa Lucia Stroncone Obs. in Italy, 1 in MPEC 2013-U32 -- 2013 TV135
G404program code 4 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-U32 -- 2013 TV135
K90Sopot Obs., 1 in MPEC 2013-U32 -- 2013 TV135
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2013-U32 -- 374851, 373135, 242708
291Spacewatch 1.8m telescope in Arizona, 18 in MPECs 2013-U32, 2013-U33, 2013-U34, 2013-U35, 2013-U36 & 2013-U37 -- 2013 UZ, 2013 UU1, 2013 US1, 2013 UR1, 2013 UQ1, 2013 UP1, 2013 UK, 2013 UG1, 2013 TZ5, 2013 TV135, 2013 TV132, 2013 TS4, 2013 TJ4, 2013 TJ135, 2013 TD4, 2013 SX24, 2013 SK19, 2013 SG25
926Tenagra II Obs. in Arizona, 13 in MPECs 2013-U32, 2013-U33, 2013-U34, 2013-U36 & 2013-U37 -- 2013 UZ, 2013 UU1, 2013 US1, 2013 UQ1, 2013 UP1, 2013 UG1, 2013 UE1, 2013 UD1, 2013 UC1, 2013 UB1, 2013 TV135, 162566, 11398
I86UCM Obs., 1 in MPEC 2013-U32 -- 2013 UG1
718Wiggins Obs. in Utah, 1 in MPEC 2013-U32 -- 2013 TV135
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 October '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 UR1JPL Sentry22342050-206032.4e-06-6.50-6.570JPL: "Analysis based on 20 observations spanning .82055 days (2013-Oct-23.38002 to 2013-Oct-24.20057)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2013 UG1JPL Sentry14312068-207677.0e-07-4.84-4.950JPL: "Analysis based on 91 observations spanning 1.6239 days (2013-Oct-22.51742 to 2013-Oct-24.14127)." Diameter approximately 0.120 km. from mean, weighted H=22.3.
2013 TV135JPL Sentry19332032-204729.5e-05-0.97-0.981JPL: "Analysis based on 259 observations spanning 15.253 days (2013-Oct-08.85531 to 2013-Oct-24.10834)." Diameter approximately 0.440 km. from mean, weighted H=19.4.
NEODyS14272032-209831.64e-04-0.74-0.741NEODyS: "Based on 261 optical observations (of which 2 are rejected as outliers) from 2013-10-08.856 to 2013-10-24.109."
2013 TV132JPL Sentry14312103-211147.6e-07-7.17-7.590JPL: "Analysis based on 28 observations spanning 10.989 days (2013-Oct-12.39906 to 2013-Oct-23.38841)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
NEODyS14272097-211145.55e-07-7.31-7.660NEODyS: "Based on 29 optical observations (of which 1 are rejected as outliers) from 2013-10-12.400 to 2013-10-23.389."

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 24 October '13

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

2333Updated Traffic Report
2234Noted that JPL Sentry has posted 2013 UR1 as an impact risk - see above
2047Grabbed MPEC 2013-U33 - 2013 UP1 - see above
Grabbed MPEC 2013-U34 - 2013 UQ1 - see above
Grabbed MPEC 2013-U35 - 2013 UR1 - see above
Grabbed MPEC 2013-U36 - 2013 US1 - see above
Grabbed MPEC 2013-U37 - 2013 UU1 - see above
1933Noted that JPL Sentry has updated its 2013 TV135 risk assessment - see above
1431Noted that JPL Sentry has updated its 2013 TV132 risk assessment - see above
Noted that JPL Sentry has updated its 2013 UG1 risk assessment - see above
1427Noted that NEODyS has updated its 2013 TV132 risk assessment - see above
Noted that NEODyS has updated its 2013 TV135 risk assessment - see above
Grabbed MPEC 2013-U32 - Daily Orbit Update - see above