Contents  on 6 October '12

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 6 October '12

Two objects reported inside ten LD

Two visitors are reported flying within ten lunar distances (LD) of our planet today. Newly announced intruder 2012 TV enters Earth's Hill sphere, going from 6.16 to 2.45 LD. Further out, 2012 SJ58 exits ten LD, traveling from 8.89 to 10.79 LD.

Coming toward Earth next, 2010 JK1 arrives inside ten LD on November 22nd.

This report was updated at 2356 UTC with new discovery 2012 TV (MPEC). Today's first report was generated at 1606 UTC with follow-up in today's DOU MPEC for departed 2012 SR56.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. 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 6 October '12

The MPC's NEO Confirmation Page has 83 listings

When last checked at 2313 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 83 objects listed. Of these, 57 were "one nighters." The Tracking News counted a total of 104 listings on the NEOCP on this day.

New MPECs  on 6 October '12

Minor Planet Electronic Circulars

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


MPEC 2012-T16 - "22:09 UT" - 2012 TV


MPEC 2012-T15 - "20:30 UT" - 2009 TK


MPEC 2012-T14 - "18:13 UT" - 2012 TU


MPEC 2012-T13 - "18:11 UT" - 2012 TT


MPEC 2012-T12 - "18:08 UT" - 2012 TS


<< DOU on 6 Oct. '12 >>  MPEC 2012-T11 - "06:03 UT" - Daily Orbit Update

Observers  on 6 October '12

A total of 33 observers appeared in this day's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPECs 2012-T15 & 2012-T16 -- 2012 TV, 2009 TK
J16An Carraig Obs. in Northern Ireland, 2 in MPECs 2012-T12 & 2012-T16 -- 2012 TV, 2012 TS
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2012-T12, 2012-T13, 2012-T14, 2012-T15 & 2012-T16 -- 2012 TV, 2012 TU, 2012 TT, 2012 TS, 2009 TK
A81Balzaretto Obs. in Italy, 2 in MPECs 2012-T15 & 2012-T16 -- 2012 TV, 2009 TK
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2012-T11, 2012-T12, 2012-T15 & 2012-T16 -- 2012 TV, 2012 TS, 2012 SK50, 2012 MN2, 2009 TK, 1999 TZ4, 334412, 303262, 276397, 214869, 4587, 4487
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2012-T11 -- 2012 RX16, 2012 QJ45, 2012 OZ, 2012 MN2, 2012 LK9, 2012 JR17, 2012 HS15, 2012 HJ1, 2012 FM52, 2012 BC20, 2009 SC229, 1999 TK12, 1997 UH9
958Dax Obs. in France, 1 in MPEC 2012-T16 -- 2012 TV
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2012-T11, 2012-T12 & 2012-T16 -- 2012 TV, 2012 TS, 2012 RV16, 2005 ST1
C73Galati Obs. in Romania, 1 in MPEC 2012-T11 -- 2011 SL102
J95Great Shefford Obs. in England, 2 in MPECs 2012-T15 & 2012-T16 -- 2012 TV, 2009 TK
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2012-T16 -- 2012 TV
C32Ka-Dar Obs. TAU Station in Russia, 1 in MPEC 2012-T16 -- 2012 TV
C41MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2012-T11 -- 2002 RC118
711McDonald Obs. in Texas, 1 in MPEC 2012-T13 -- 2012 TT
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2012-T11 -- 2012 RV16, 2012 QY14, 2012 QQ50, 2000 SD8
118Modra Obs. in Slovakia, 1 in MPEC 2012-T12 -- 2012 TS
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2012-T11, 2012-T13 & 2012-T14 -- 2012 TU, 2012 TT, 2003 VO2, 329520, 12538, 5131
B49Paus Obs. in Spain, 1 in MPEC 2012-T16 -- 2012 TV
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 2 in MPECs 2012-T15 & 2012-T16 -- 2012 TV, 2009 TK
H06.Cristovao Jacques in Brazil via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-T16 -- 2012 TV
H06`Erik Bryssinck in Belgium via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-T16 -- 2012 TV
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-T16 -- 2012 TV
J41Raheny Obs. in Ireland, 1 in MPEC 2012-T16 -- 2012 TV
461SZTE Asteroid Program in Hungary, 1 in MPEC 2012-T11 -- 12538
H36Sandlot Obs. in Kansas, 4 in MPECs 2012-T11, 2012-T12, 2012-T13 & 2012-T16 -- 2012 TV, 2012 TT, 2012 TS, 2012 RQ16
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2012-T11 -- 2012 PO28
G40Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2012-T16 -- 2012 TV
J84South Obs. in England, 1 in MPEC 2012-T16 -- 2012 TV
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2012-T11 & 2012-T14 -- 2012 TU, 2012 SR56
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2012-T12 & 2012-T16 -- 2012 TV, 2012 TS
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2012-T11 -- 2012 JS11
954Teide Obs. in the Canary Islands, 1 in MPEC 2012-T12 -- 2012 TS
926Tenagra II Obs. in Arizona, 2 in MPECs 2012-T11 & 2012-T16 -- 2012 TV, 2007 RT19
G56Walnut Creek Obs. in northern California, 2 in MPECs 2012-T12 & 2012-T16 -- 2012 TV, 2012 TS
718Wiggins Obs. in Utah, 3 in MPECs 2012-T11 & 2012-T16 -- 2012 TV, 2012 SK8, 2012 RV16
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2012-T11 -- 2012 SA59, 2012 QO10, 2012 JS11
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 October '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2313 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
2012 TVJPL Sentry23592070-2107129.5e-06-5.07-5.130JPL: "Analysis based on 129 observations spanning 1.5563 days (2012-Oct-05.32361 to 2012-Oct-06.87988)." Diameter approximately 0.032 km. from mean, weighted H=25.1.

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 6 October '12

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

2359Noted that JPL Sentry has posted 2012 TV as an impact risk - see above
2356Updated Traffic Report
2219Grabbed MPEC 2012-T16 - 2012 TV - see above
2130Grabbed MPEC 2012-T15 - 2009 TK - see above
1837Grabbed MPEC 2012-T12 - 2012 TS - see above
Grabbed MPEC 2012-T13 - 2012 TT - see above
Grabbed MPEC 2012-T14 - 2012 TU - see above
1551Grabbed MPEC 2012-T11 - Daily Orbit Update - see above