Contents  on 30 October '13

NOTE:  The A/CC news pages will update less frequently than usual today.

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 30 October '13

Two objects reported inside ten LD

Two visitors are reported moving within ten lunar distances (LD) of Earth today. Intruder 2013 UV3 passed the Moon at 0.59 LD at 0101 UT and left the Earth-Moon system at 0208 UT. And outbound intruder 2013 UX2 exits Earth's Hill sphere, going from 3.80 to 4.65 LD.

Coming to the neighborhood next, 2013 UE1 arrives 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 generated at 1621 UTC with follow-up in today's DOU MPEC for 2013 UV3 and departed 2013 UG1.



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 30 October '13

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2357 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, six were "one nighters." So far The Tracking News has counted a total of 28 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 30 October '13

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-U85 - "21:16 UT" - Comet P/2011 CR42 (Catalina)


MPEC 2013-U84 - "18:41 UT" - Comet C/2013 U2 (Holvorcem)


MPEC 2013-U83 - "18:10 UT" - Comet C/2013 U1 (Catalina)


MPEC 2013-U82 - "17:58 UT" - 2013 UX8


MPEC 2013-U81 - "16:37 UT" - 2003 UY12 = 2003 US12 = 2013 UT8


<< DOU on 30 Oct. '13 >>  MPEC 2013-U80 - "06:05 UT" - Daily Orbit Update

Observers  on 30 October '13

A total of 50 observers appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2013-U85 -- P/2011 CR42
J57Alto Turia Obs. in Spain, 1 in MPEC 2013-U83 -- C/2013 U1
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2013-U84 -- C/2013 U2
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2013-U80, 2013-U82 & 2013-U84 -- 2013 UZ, 2013 UX8, 2013 UR5, 2013 UG1, C/2013 U2, 2013 TE, 162566, 3361
L22Barlad Obs., 2 in MPEC 2013-U80 -- 2013 RM43, 142781
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-U83 -- C/2013 U1
235CAST Obs. in Italy, 1 in MPEC 2013-U85 -- P/2011 CR42
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2013-U83 & 2013-U85 -- C/2013 U1, P/2011 CR42
924Cegep de Trois-Rivieres Obs. in Quebec, 2 in MPEC 2013-U80 -- 2013 TB80, 2013 RM43
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 7 in MPECs 2013-U80 & 2013-U82 -- 2013 UX8, 2013 UU1, 2013 UL5, 2013 UH5, 2013 UG1, 2013 SL30, 2013 QH48
850Cordell-Lorenz Obs. in Tennessee, 3 in MPECs 2013-U83, 2013-U84 & 2013-U85 -- C/2013 U2, C/2013 U1, P/2011 CR42
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2013-U85 -- P/2011 CR42
958Dax Obs. in France, 1 in MPEC 2013-U84 -- C/2013 U2
448Desert Moon Obs. in New Mexico, 1 in MPEC 2013-U83 -- C/2013 U1
113Drebach Obs. in Germany, 1 in MPEC 2013-U83 -- C/2013 U1
006Fabra Obs. in Spain, 1 in MPEC 2013-U80 -- 142781
F65(program code "(" (17) via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-U84 -- C/2013 U2
E104program code 4 via Faulkes Telescope South in New South Wales, 2 in MPECs 2013-U83 & 2013-U85 -- C/2013 U1, P/2011 CR42
E105Richard Miles in England via Faulkes Telescope South in New South Wales, 1 in MPEC 2013-U83 -- C/2013 U1
E94Gisborne Obs. in New Zealand, 1 in MPEC 2013-U83 -- C/2013 U1
J95Great Shefford Obs. in England, 4 in MPECs 2013-U80, 2013-U83 & 2013-U84 -- 2013 UV3, 2013 UT8, C/2013 U2, C/2013 U1
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2013-U83 -- C/2013 U1
168Kourovskaya Obs. in Russia, 1 in MPEC 2013-U80 -- 2013 TV135
K91LCOGT Sutherland A in South Africa, 1 in MPEC 2013-U80 -- 2013 UP8
704LINEAR in New Mexico, 1 in MPEC 2013-U85 -- P/2011 CR42
J75La Sagra Obs. in Spain, 1 in MPEC 2013-U85 -- P/2011 CR42
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-U85 -- P/2011 CR42
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-U80 -- 2011 OB26
711McDonald Obs. in Texas, 3 in MPECs 2013-U82, 2013-U83 & 2013-U84 -- 2013 UX8, C/2013 U2, C/2013 U1
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2013-U83 & 2013-U85 -- C/2013 U1, P/2011 CR42
675}program code "}" (33) via Mount Palomar in southern California, 1 in MPEC 2013-U85 -- P/2011 CR42
J93Mt. Tuffley Obs. in England, 3 in MPEC 2013-U80 -- 162566, 9950, 1981
C47Nonndorf Obs. in Austria, 1 in MPEC 2013-U83 -- C/2013 U1
G34Oberfrauendorf Obs., 1 in MPEC 2013-U80 -- 2013 RM43
J43Oukaimeden Obs. in Morocco, 2 in MPECs 2013-U83 & 2013-U85 -- C/2013 U1, P/2011 CR42
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-U85 -- P/2011 CR42
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-U82 -- 2013 UX8
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2013-U85 -- P/2011 CR42
L04ROASTERR-1 Obs., 1 in MPEC 2013-U80 -- 2013 TV135
C95SATINO-1 in France, 1 in MPEC 2013-U84 -- C/2013 U2
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-U82 -- 2013 UX8
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-U83 -- C/2013 U1
K90Sopot Obs., 1 in MPEC 2013-U80 -- 2013 UG1
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2013-U82 & 2013-U83 -- 2013 UX8, C/2013 U1
926Tenagra II Obs. in Arizona, 4 in MPECs 2013-U81, 2013-U82, 2013-U83 & 2013-U84 -- 2013 UX8, 2013 UT8, C/2013 U2, C/2013 U1
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2013-U85 -- P/2011 CR42
C44Volta Obs. in Italy, 1 in MPEC 2013-U83 -- C/2013 U1
I42Westport Obs. in Massachusetts, 4 in MPEC 2013-U80 -- 2013 UG1, 2013 TL117, 2013 SC25, 2013 RM43
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-U84 -- C/2013 U2
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-U85 -- P/2011 CR42
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 3 in MPECs 2013-U83, 2013-U84 & 2013-U85 -- C/2013 U2, C/2013 U1, P/2011 CR42
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 3 in MPECs 2013-U83, 2013-U84 & 2013-U85 -- C/2013 U2, C/2013 U1, P/2011 CR42
I896program code 6 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-U83 -- C/2013 U1
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-U85 -- P/2011 CR42
Q622program code 2 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-U83 -- C/2013 U1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 October '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 UQ8NEODyS16192091-209621.74e-09-9.29-9.430NEODyS: "Based on 28 optical observations (of which 1 are rejected as outliers) from 2013-10-28.177 to 2013-10-29.179."
2013 UP8JPL Sentry1619202116.4e-09-2.67-2.670JPL: "Analysis based on 17 observations spanning 4.5235 days (2013-Oct-25.43964 to 2013-Oct-29.9631)." Diameter approximately 2.000 km. from mean, weighted H=16.1.
NEODyS16192017-203656.53e-09-2.39-2.470NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2013-10-25.440 to 2013-10-29.177."
2013 TV135JPL Sentry23152032-204724.5e-05-1.29-1.291JPL: "Analysis based on 459 observations spanning 20.983 days (2013-Oct-08.85531 to 2013-Oct-29.83832)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
NEODyS16192032-204721.52e-04-0.77-0.771NEODyS: "Based on 470 optical observations (of which 7 are rejected as outliers) from 2013-10-08.856 to 2013-10-29.839."
2011 OB26JPL Sentry16192099-2113214.5e-05-4.91-5.340JPL: "Analysis based on 28 observations spanning 10.049 days (2011-Jul-28.4734 to 2011-Aug-07.52249)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
NEODyS16192084-2112534.6e-05-4.91-5.360NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2011-07-28.474 to 2011-08-07.523."

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 30 October '13

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

2315Noted that JPL Sentry has updated its 2013 TV135 risk assessment - see above
2314Grabbed MPEC 2013-U81 - 2003 UY12 = 2003 US12 = 2013 UT8 - see above
Grabbed MPEC 2013-U82 - 2013 UX8 - see above
Grabbed MPEC 2013-U83 - Comet C/2013 U1 (Catalina) - see above
Grabbed MPEC 2013-U84 - Comet C/2013 U2 (Holvorcem) - see above
Grabbed MPEC 2013-U85 - Comet P/2011 CR42 (Catalina) - see above
1621Generated Traffic Report
1619Noted that NEODyS has updated its 2011 OB26 risk assessment - see above
Noted that NEODyS has updated its 2013 TV135 risk assessment - see above
Noted that NEODyS has posted 2013 UP8 as an impact risk - see above
Noted that NEODyS has posted 2013 UQ8 as an impact risk - see above
Grabbed MPEC 2013-U80 - Daily Orbit Update - see above
1618Noted that JPL Sentry has updated its 2011 OB26 risk assessment - see above
Noted that JPL Sentry has updated its 2013 UP8 risk assessment - see above