Contents  on 31 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 31 October '13

Three objects reported inside ten LD

There are three asteroids reported inside ten lunar distances (LD) of our planet today. Intruder 2013 UV3 is outbound from 4.14 to 7.85 LD and intruder 2013 UX2 from 4.65 to 5.49 LD, while newly announced 2013 UJ9 is inbound from 5.64 to 4.95 LD.

On approach next, 2013 UE1 comes inside ten LD on November 4th, radar target 2001 AV43 arrives on November 6th, and radar target 2013 NJ on November 19th.

This report was updated at 2317 UTC with new discovery 2013 UJ9 (MPEC) and also with 2013 UQ5, which was reported October 28th as new (MPEC) and, with data reported in today's DOU MPEC, is calculated to have come within ten LD earlier this month. Today's first traffic report was generated at 1647 UTC with follow-up in today's DOU for 2013 UE1 and departed objects 2013 UT4 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 31 October '13

The MPC's NEO Confirmation Page has 24 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 24 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 42 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 31 October '13

Minor Planet Electronic Circulars

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


MPEC 2013-U92 - "19:05 UT" - 2013 UJ9


MPEC 2013-U91 - "19:00 UT" - 2013 UM9


MPEC 2013-U90 - "18:51 UT" - 2013 UL9


MPEC 2013-U89 - "18:46 UT" - 2013 UK9


MPEC 2013-U88 - "18:41 UT" - 2013 UH9


MPEC 2013-U87 - "18:36 UT" - 2013 UG9


<< DOU on 31 Oct. '13 >>  MPEC 2013-U86 - "06:04 UT" - Daily Orbit Update

Observers  on 31 October '13

A total of 48 observers appear in today's MPECs.

CodeObserver / observatory
I22Abbey Ridge Obs. in Nova Scotia, 1 in MPEC 2013-U86 -- 2013 TV135
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2013-U88 -- 2013 UH9
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2013-U88 -- 2013 UH9
E23Arcadia Obs. in New South Wales, 3 in MPECs 2013-U86, 2013-U87 & 2013-U88 -- 2013 UU1, 2013 UH9, 2013 UG9
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPECs 2013-U86, 2013-U87 & 2013-U88 -- 2013 UZ, 2013 UU4, 2013 US3, 2013 UR4, 2013 UP1, 2013 UH9, 2013 UH5, 2013 UG9, 2013 UF3, 2013 UE3, 2013 UC1, 2013 UB1, 2013 TG4, 2013 SW24, 2008 SQ1, 2006 VT2, 2000 JO78
A81Balzaretto Obs. in Italy, 1 in MPEC 2013-U88 -- 2013 UH9
L22Barlad Obs., 3 in MPEC 2013-U86 -- 251346, 21088, 3361
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-U88 -- 2013 UH9
I58Betera Obs., 1 in MPEC 2013-U88 -- 2013 UH9
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-U88 -- 2013 UH9
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2013-U86, 2013-U87, 2013-U89, 2013-U90, 2013-U91 & 2013-U92 -- 2013 UM9, 2013 UM5, 2013 UL9, 2013 UK9, 2013 UJ9, 2013 UG9, 2013 TS4, 2013 TE6, 2013 TC136, 2010 VD1, 2003 WX25, 1990 UP, 53550, 17511, 10115
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2013-U87 & 2013-U88 -- 2013 UH9, 2013 UG9
G58Chabot Obs. in northern California, 6 in MPECs 2013-U86, 2013-U87 & 2013-U88 -- 2013 UL5, 2013 UH9, 2013 UG9, 2013 UG1, 2013 UB1, 2003 UY12
958Dax Obs. in France, 1 in MPEC 2013-U88 -- 2013 UH9
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-U87 -- 2013 UG9
113Drebach Obs. in Germany, 2 in MPECs 2013-U87 & 2013-U88 -- 2013 UH9, 2013 UG9
639Dresden Obs. in Germany, 1 in MPEC 2013-U86 -- 1981
I48El Catalejo Obs. in Argentina, 1 in MPEC 2013-U88 -- 2013 UH9
006Fabra Obs. in Spain, 1 in MPEC 2013-U86 -- 251346
595Farra d'Isonzo Obs. in Italy, 5 in MPECs 2013-U86, 2013-U88, 2013-U90 & 2013-U91 -- 2013 UM9, 2013 UL9, 2013 UH9, 2013 UH5, 2013 TV135
E108program code 8 via Faulkes Telescope South in New South Wales, 2 in MPECs 2013-U87 & 2013-U88 -- 2013 UH9, 2013 UG9
J95Great Shefford Obs. in England, 2 in MPECs 2013-U87 & 2013-U88 -- 2013 UH9, 2013 UG9
C43Hoyerswerda Obs. in Germany, 2 in MPECs 2013-U88 & 2013-U90 -- 2013 UL9, 2013 UH9
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-U86 -- 2013 UR3
B15Inastars Obs. in Germany, 1 in MPEC 2013-U86 -- 16834
A14Les Engarouines Obs. in France, 1 in MPEC 2013-U86 -- 52760
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-U88 -- 2013 UH9
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPECs 2013-U86 & 2013-U91 -- 2013 UM9, 2013 TV135, 2008 HS3
900Moriyama Obs. in Japan, 1 in MPEC 2013-U88 -- 2013 UH9
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2013-U86, 2013-U87, 2013-U88, 2013-U89 & 2013-U92 -- 2013 UK9, 2013 UJ9, 2013 UH9, 2013 UG9, 2013 HG20, 168378
A13Naef Obs. in Switzerland, 5 in MPECs 2013-U86 & 2013-U91 -- 2013 UM9, 354182, 252373, 220909, 8201
C47Nonndorf Obs. in Austria, 2 in MPECs 2013-U86 & 2013-U88 -- 2013 UH9, 2013 TV135
G34Oberfrauendorf Obs., 1 in MPEC 2013-U86 -- 142781
C23Olmen Obs. in Belgium, 1 in MPEC 2013-U86 -- 2013 RM43
F51Pan-STARRS 1 (PS1) in Hawaii, 8 in MPEC 2013-U86 -- 2013 TD4, 2009 WC52, 2009 FU4, 2008 TD4, 2006 HU30, 65733, 370688, 162273
D29Purple Mtn. Obs. Xuyi Station in China, 8 in MPEC 2013-U86 -- 2013 TV135, 2009 HB, 2008 TA1, 65733, 351545, 243147, 4183, 3691
L04ROASTERR-1 Obs., 1 in MPEC 2013-U86 -- 433
V05Rusty Mtn. Obs., 1 in MPEC 2013-U88 -- 2013 UH9
461SZTE Asteroid Program in Hungary, 1 in MPEC 2013-U88 -- 2013 UH9
510Siegen Obs. in Germany, 2 in MPECs 2013-U86 & 2013-U88 -- 2013 UH9, 2013 TV135
K90Sopot Obs., 1 in MPEC 2013-U86 -- 2013 SK19
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-U91 -- 2013 UM9
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2013-U86 & 2013-U91 -- 2013 UT4, 2013 US3, 2013 UN5, 2013 UM9, 2013 UB1, 2013 TV135, 2013 TS132, 2013 TC6, 2013 RY5, 2013 RV9, 2013 RJ74, 2013 RE6, 2013 NW, 2011 SG5, 2010 KB61
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2013-U89 & 2013-U90 -- 2013 UL9, 2013 UK9
673!Jana Pittichova via Table Mtn. Obs. in southern California, 5 in MPECs 2013-U86, 2013-U87, 2013-U88, 2013-U90 & 2013-U91 -- 2013 UM9, 2013 UL9, 2013 UH9, 2013 UG9, 2013 UE1
926Tenagra II Obs. in Arizona, 25 in MPECs 2013-U86, 2013-U87 & 2013-U88 -- 2013 UU1, 2013 UT4, 2013 US8, 2013 US3, 2013 UR8, 2013 UR5, 2013 UR4, 2013 UR3, 2013 UQ8, 2013 UQ5, 2013 UP5, 2013 UP1, 2013 UN5, 2013 UM5, 2013 UL5, 2013 UH9, 2013 UH5, 2013 UG9, 2013 UG5, 2013 UF5, 2013 UF3, 2013 UE3, 2013 UD1, 2013 JT22, 9950
J08Zonalunar Obs. in Spain, 1 in MPEC 2013-U88 -- 2013 UH9
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-U92 -- 2013 UJ9
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 31 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 UQ8NEODyS1645R E M O V E D-
2013 TV135JPL Sentry16452032-204721.7e-04-0.72-0.731JPL: "Analysis based on 482 observations spanning 22.196 days (2013-Oct-08.85531 to 2013-Oct-31.05098)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
NEODyS16452032-204722.34e-04-0.58-0.581NEODyS: "Based on 489 optical observations (of which 4 are rejected as outliers) from 2013-10-08.856 to 2013-10-31.052."

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 31 October '13

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

2317Updated Traffic Report
1914Grabbed MPEC 2013-U87 - 2013 UG9 - see above
Grabbed MPEC 2013-U88 - 2013 UH9 - see above
Grabbed MPEC 2013-U89 - 2013 UK9 - see above
Grabbed MPEC 2013-U90 - 2013 UL9 - see above
Grabbed MPEC 2013-U91 - 2013 UM9 - see above
Grabbed MPEC 2013-U92 - 2013 UJ9 - see above
1645Noted that JPL Sentry has updated its 2013 TV135 risk assessment - see above
Noted that NEODyS has updated its 2013 TV135 risk assessment - see above
Noted that NEODyS has removed 2013 UQ8 as an impact risk - see above
Grabbed MPEC 2013-U86 - Daily Orbit Update - see above