Contents  on 18 November '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 18 November '13

Two objects reported inside ten LD

Two visitors are reported passing inside ten lunar distances (LD) of Earth today. Within Earth's Hill sphere, radar target 2001 AV43 comes its closest to Earth on this passage, reaching 2.96 LD at 2134 UT. Out further, 2013 VK13 is inbound from 8.83 to 8.18 LD.

Coming to the neighborhood next, radar target 2013 NJ arrives inside ten LD tomorrow.

This report was generated at 1619 UTC with follow-up in today's DOU MPEC for 2013 VK13 and departed objects 2013 VP11, 2013 VO11, 2013 VK11, intruder 2013 VJ11, risk-listed 2013 VM5, and 2013 UG1, plus observation of 277475 2005 WK4 from August. (When checked after 1720 UTC, JPL had not yet posted new orbit solutions for 2013 VM5, 2013 VK13, and objects 2013 VK11, VO11, and VP11. Some of these may be active but unannounced radar targets.)



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 18 November '13

The MPC's NEO Confirmation Page has 3 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three objects listed. Of these, one was a "one nighter."

New MPECs  on 18 November '13

Minor Planet Electronic Circulars

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


<< DOU on 18 Nov. '13 >>  MPEC 2013-W05 - "00:43 UT" - Daily Orbit Update

Observers  on 18 November '13

A total of 47 observers appear in today's MPEC.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-W05 -- 2013 VD13
H21Astronomical Research Obs. Westfield in Illinois, 80 in MPEC 2013-W05 -- 2013 VZ9, 2013 VZ11, 2013 VY13, 2013 VV4, 2013 VQ11, 2013 VO5, 2013 VN4, 2013 VM2, 2013 VL2, 2013 VK5, 2013 VK11, 2013 VJ2, 2013 VJ11, 2013 VD13, 2013 VC10, 2013 VB10, 2013 VA12, 2013 VA10, 2013 UZ, 2013 UY, 2013 UV10, 2013 UU1, 2013 UR5, 2013 UR3, 2013 UP1, 2013 UL9, 2013 UK, 2013 UH9, 2013 UG9, 2013 UG5, 2013 UG1, 2013 UF3, 2013 UC1, 2013 UB1, 2013 TW135, 2013 TV135, 2013 TL117, 2013 TH5, 2013 TE6, 2013 TE135, 2013 TB80, 2013 SV24, 2013 SK19, 2013 SE21, 2013 SC25, 2013 RR5, 2013 RE21, 2013 PV6, 2013 OG, 2012 ER14, 2011 WM2, 2011 QD48, 2010 WP8, 2009 WE253, 2008 JP14, 2008 HO3, 2006 YC13, 2002 PC130, 1999 SK10, 55532, 52760, 36236, 251346, 219071, 163249, 162566, 162273, 162004, 142781, 141052, 9950, 8014, 5587, 4055, 3988, 3691, 3200, 2212, 1981, 1627
B75Betelgeuse Station in Italy, 1 in MPEC 2013-W05 -- 2013 SC25
300Bisei Spaceguard Center in Japan, 3 in MPEC 2013-W05 -- 251346, 142781, 9950
821Bosque Alegre Obs. in Argentina, 1 in MPEC 2013-W05 -- 2013 UQ4
U82CS3 Palmer Divide Station in southern California, 3 in MPEC 2013-W05 -- 2013 UH9, 2006 HU30, 162566
W11Calumet Astronomy Center in Indiana, 1 in MPEC 2013-W05 -- 250620
703Catalina Sky Survey (CSS) in Arizona, 38 in MPEC 2013-W05 -- 2013 VM2, 2013 VK2, 2013 UZ, 2013 UH9, 2013 TE135, 2013 RE21, 2013 PX6, 2012 ER14, 2010 LJ14, 2009 HB, 2009 DM1, 2008 UW5, 2006 WJ3, 2005 RQ6, 1990 UP, 90075, 89355, 85818, 85774, 373393, 363790, 36236, 349507, 275545, 251346, 18109, 16834, 162694, 138095, 10115, 9950, 6611, 5587, 4486, 3691, 3288, 2212, 1943
K51Celado Obs., 2 in MPEC 2013-W05 -- 2013 SK19, 2003 WX25
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 33 in MPEC 2013-W05 -- 2013 VZ9, 2013 VY9, 2013 VX4, 2013 VV4, 2013 VP11, 2013 VO13, 2013 VL13, 2013 VK5, 2013 VJ2, 2013 VG13, 2013 VF13, 2013 VE13, 2013 VD13, 2013 UQ4, 2013 UF5, 2013 TN69, 2013 TL135, 2013 RB74, 2013 QG17, 2013 PU31, 2013 GS38, 2012 PA, 2012 AU10, 2010 LJ14, 2008 VN, 2004 XN14, 96744, 86324, 35432, 143624, 138847, 8566, 4055
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-W05 -- 2013 TV135
K20Danastro Obs., 2 in MPEC 2013-W05 -- 16834, 9950
448Desert Moon Obs. in New Mexico, 13 in MPEC 2013-W05 -- 2013 VL13, 2013 VE13, 2013 UG9, 2013 UE3, 2013 TC136, 2013 TB80, 2002 VR94, 349507, 349074, 262623, 162581, 142464, 138852
Z81Estrella de Mar Obs., 10 in MPEC 2013-W05 -- 2013 VA10, 85774, 53110, 363790, 22771, 16834, 162566, 162004, 142781, 141079
E89Geyserland Obs. in New Zealand, 1 in MPEC 2013-W05 -- 138095
J95Great Shefford Obs. in England, 1 in MPEC 2013-W05 -- 2013 VK13
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-W05 -- 2013 TB80
K48Keyhole Obs., 4 in MPEC 2013-W05 -- 2013 SC25, 361071, 142781, 141079
809:program code ":" via La Silla in Chile, 1 in MPEC 2013-W05 -- 2002 HF8
K38M57 Obs., 1 in MPEC 2013-W05 -- 2013 UR3
D54MASTER-II Obs. Blagoveshchensk in Russia, 3 in MPEC 2013-W05 -- 162566, 4954, 433
C94MASTER-II Obs. Tunka in Russia, 2 in MPEC 2013-W05 -- 2005 RQ6, 17511
560Madonna di Dossobuono Obs. in Italy, 6 in MPEC 2013-W05 -- 2013 VO5, 2013 UH9, 2013 TB80, 2013 SC25, 2009 WE253, 2006 HU30
5682David Tholen's team on Mauna Kea in Hawaii, 4 in MPEC 2013-W05 -- 2013 TR132, 2013 SS, 2013 RO21, 2013 RD6
711McDonald Obs. in Texas, 13 in MPEC 2013-W05 -- 2013 VV4, 2013 VC10, 2013 VA12, 2013 UX, 2013 UU1, 2013 UG1, 2013 SR24, 2013 SO19, 2009 XZ1, 2008 JP14, 2006 YF, 2004 YR, 2003 XB22
B67Mirasteilas Obs. in Switzerland, 4 in MPEC 2013-W05 -- 52760, 363305, 163249, 138095
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPEC 2013-W05 -- 2013 VG13, 2013 UZ, 2013 UX, 2013 TG4, 2013 RE21, 2013 QJ10, 2009 WE253, 2008 TD4, 2006 HU30, 313538, 242708, 22771, 187040
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2013-W05 -- 2003 CC11
A13Naef Obs. in Switzerland, 2 in MPEC 2013-W05 -- 2013 TV135, 85839
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2013-W05 -- 277475
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2013-W05 -- 2013 VK2, 2008 UW5, 2002 WQ4
I41Palomar Transient Factory (PTF) in southern California, 5 in MPEC 2013-W05 -- 2013 PV6, 1990 UP, 65996, 349507, 162273
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-W05 -- 2013 UP8
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 30 in MPEC 2013-W05 -- 2013 VO5, 2013 VM2, 2013 VJ2, 2013 UR3, 2013 UH9, 2013 TV135, 2013 TS4, 2013 TH5, 2013 TE6, 2013 TB80, 2013 SK19, 2013 SC25, 2013 PV6, 2012 ER14, 2011 WU95, 2010 XZ67, 2010 SL13, 2009 WE253, 2008 FT6, 2006 WX1, 2006 HU30, 2005 RQ6, 2003 WX25, 1995 OO, 52760, 251346, 142781, 141079, 10115, 3200
D29Purple Mtn. Obs. Xuyi Station in China, 18 in MPEC 2013-W05 -- 2013 TV135, 2008 SQ1, 2008 PH9, 2003 OB4, 88188, 55532, 52768, 52762, 375657, 303262, 275677, 17182, 162004, 143678, 12923, 8013, 5653, 3122
L04ROASTERR-1 Obs., 2 in MPEC 2013-W05 -- 251346, 9950
071Rhozen Obs. in Bulgaria, 2 in MPEC 2013-W05 -- 2013 TV135, 251346
C95SATINO-1 in France, 1 in MPEC 2013-W05 -- 142781
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-W05 -- 2013 UE3
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPEC 2013-W05 -- 2008 FT6, 52760
G404Don Cranford, Jr. in North Carolina via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-W05 -- 2013 UQ4
K90Sopot Obs., 3 in MPEC 2013-W05 -- 2013 TV135, 2013 SK19, 162566
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2013-W05 -- 2013 VN4, 2013 TV144, 2013 SK19, 2009 FU4, 2002 WQ4, 162273
291Spacewatch 1.8m telescope in Arizona, 10 in MPEC 2013-W05 -- 2013 VZ4, 2013 VN4, 2013 VM5, 2013 UP8, 2013 UF5, 2013 GF69, 2013 BZ45, 2010 HZ108, 2007 LD, 1997 WQ23
673!Jana Pittichova via Table Mtn. Obs. in southern California, 1 in MPEC 2013-W05 -- 2008 HO3
926Tenagra II Obs. in Arizona, 23 in MPEC 2013-W05 -- 2013 VY9, 2013 VY13, 2013 VX13, 2013 VR12, 2013 VQ13, 2013 VP11, 2013 VO5, 2013 VO4, 2013 VO11, 2013 VM2, 2013 VL2, 2013 VL13, 2013 VK5, 2013 VK13, 2013 VK11, 2013 VG13, 2013 VE13, 2013 VA12, 2013 VA10, 2013 UM9, 2013 TR5, 2011 WM2, 162004
A48Verona Obs. in Italy, 1 in MPEC 2013-W05 -- 2013 VO5
718Wiggins Obs. in Utah, 2 in MPEC 2013-W05 -- 2013 VO5, 2013 UR3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 November '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 VD17NEODyS16182065-207521.42e-06-6.73-6.910NEODyS: "Based on 18 optical observations (of which 1 are rejected as outliers) from 2013-11-14.243 to 2013-11-15.410."
2008 VS4JPL Sentry05142015-21102616.8e-07-5.54-6.360JPL: "Analysis based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963)." Diameter approximately 0.050 km. from mean, weighted H=24.2.

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 18 November '13

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

1619Generated Traffic Report
1618Noted that NEODyS has posted 2013 VD17 as an impact risk - see above
0514Noted that JPL Sentry has updated its 2008 VS4 risk assessment - see above
0157Grabbed MPEC 2013-W05 - Daily Orbit Update - see above