Contents  on 19 August '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 19 August '12

Two objects reported inside ten LD

Two objects are reported traveling inside ten lunar distances (LD) of our planet today. 2012 PZ17 is outbound from 5.64 to 6.33 LD and 2012 PD20 from 9.72 to 9.98 LD. No other objects are known to come this close until November.

This report was generated at 1554 UTC with follow-up in today's DOU MPEC for 2012 PD20 and 2012 PZ17.


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 19 August '12

The MPC's NEO Confirmation Page has 10 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had ten objects listed. Of these, seven were "one nighters." So far The Tracking News has counted a total of thirteen listings on the NEOCP today.

New MPECs  on 19 August '12

Minor Planet Electronic Circulars

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


<< OOC on 19 Aug. '12 >> MPEC 2012-Q23 - "17:40 UT" - Observations and Orbits of Comets


MPEC 2012-Q22 - "11:37 UT" - 2012 QV2


<< DOU on 19 Aug. '12 >>  MPEC 2012-Q21 - "06:03 UT" - Daily Orbit Update

Observers  on 19 August '12

A total of 63 observers appear in today's MPECs.

CodeObserver / observatory
B54Ager Obs. in Spain, 6 in MPEC 2012-Q23 -- C/2012 K5, C/2012 J1, C/2010 S1, C/2008 S3, 262P, 261P
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2012-Q21 -- 2012 PS17, 2012 PP17, 2012 PJ6, 2012 PA20, 2012 OD1, 2007 JJ35, 2007 EM88
C77Bernezzo Obs. in Italy, 3 in MPECs 2012-Q21 & 2012-Q23 -- C/2012 J1, C/2010 S1, 2010 OS22
C86Blanes Obs. in Spain, 8 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2012 J1, C/2011 F1, C/2010 S1, C/2006 S3, 260P, 96P
I99Blanquita Obs. in Spain, 3 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2010 S1
B59Borken Obs. in Germany, 1 in MPEC 2012-Q23 -- 260P
B96Brixiis Obs. in Belgium, 13 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2011 F1, C/2010 S1, C/2008 S3, 262P, 261P, 260P, 189P
I72Carpe-Noctem Obs., 4 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2011 F1, C/2010 S1
B66Casasco Obs. in Italy, 1 in MPEC 2012-Q23 -- P/2012 NJ
160Castelmartini Obs. in Italy, 9 in MPECs 2012-Q21 & 2012-Q23 -- C/2012 K5, C/2011 F1, 2009 AV, 333578, 331963, 265962, 219071, 217013, 189P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-Q22 -- 2012 QV2
A77Chante-Perdrix Obs. in France, 1 in MPEC 2012-Q23 -- 158P
970Chelmsford Obs. in England, 2 in MPEC 2012-Q23 -- P/2012 NJ, C/2011 F1
J01Cielo Profundo Obs. in Spain, 4 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 J1, C/2010 S1, 189P
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2012-Q23 -- C/2012 K5, 260P
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2012-Q21 -- 2012 PP28
J19El Maestrat Obs. in Spain, 2 in MPEC 2012-Q23 -- C/2012 K5, C/2012 J1
J36El Olivo Obs. in Spain, 1 in MPEC 2012-Q23 -- C/2012 J1
I57Elche Obs., 3 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 J1, 260P
151Eschenberg Obs. in Switzerland, 5 in MPEC 2012-Q21 -- 2012 PG6, 2012 OO, 2009 AV, 2007 EJ26, 1998 QC1
E108program code 8 via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-Q23 -- C/2011 L4
372Geisei Obs. in Japan, 6 in MPEC 2012-Q23 -- P/2012 O2, P/2012 NJ, C/2012 L3, C/2012 K8, C/2012 J1, C/2008 S3
203GiaGa Obs. in Italy, 1 in MPEC 2012-Q23 -- C/2012 K5
J95Great Shefford Obs. in England, 2 in MPEC 2012-Q21 -- 2012 PP28, 2012 PA
511Haute Provence Obs. in Germany, 7 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 L3, C/2012 L2, C/2012 L1, 262P, 189P, 96P
B15Inastars Obs. in Germany, 1 in MPEC 2012-Q23 -- C/2012 J1
585Kiev Comet Station in the Ukraine, 9 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2012 J1, C/2011 UF305, C/2011 F1, C/2010 S1, C/2006 S3, 189P, 96P
D95Kurihara Obs. in Japan, 6 in MPEC 2012-Q23 -- C/2011 UF305, C/2011 L4, C/2011 F1, C/2010 S1, C/2006 S3, 96P
J38La Vara Obs. in Spain, 6 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2010 S1, 260P, 189P, 168P
C01Lohrmann Obs. in Germany, 4 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 J1, C/2010 S1, 262P
G44Longa Vista Obs. in Brazil, 1 in MPEC 2012-Q21 -- 4769
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2012-Q21 -- 2012 PC20, 2012 NP, 2006 DY
213Montcabre Obs. in Spain, 5 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2012 K1, C/2011 L4, C/2011 F1
900Moriyama Obs. in Japan, 17 in MPEC 2012-Q23 -- P/2012 O3, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2011 F1, C/2011 A3, C/2010 S1, C/2008 FK75, 261P, 260P, 189P, 168P, 160P, 96P
474Mt. John Obs. in New Zealand, 9 in MPECs 2012-Q21, 2012-Q22 & 2012-Q23 -- 2012 QV2, 2012 PZ17, 2012 PH6, 2012 PD20, P/2012 O2, P/2012 O1, 2012 NN, C/2012 K6, P/2012 K3
E07Murrumbateman Obs. in New South Wales, 3 in MPEC 2012-Q23 -- C/2012 K6, C/2011 O1, C/2010 B1
A13Naef Obs. in Switzerland, 1 in MPEC 2012-Q21 -- 162900
D81Nagano Obs. in Japan, 3 in MPEC 2012-Q23 -- P/2012 NJ, C/2011 F1, 96P
J47Nazaret Obs. in Spain, 2 in MPEC 2012-Q23 -- C/2011 L4, C/2006 S3
C47Nonndorf Obs. in Austria, 10 in MPECs 2012-Q21 & 2012-Q23 -- 2012 PG5, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2010 S1, 2009 AV, 260P, 189P
C23Olmen Obs. in Belgium, 1 in MPEC 2012-Q23 -- 185P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2012-Q23 -- P/2012 NJ
J52Pinsoro Obs. in Spain, 7 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2012 J1, C/2011 F1, C/2010 S1, 260P, 185P
941Pla D'Arguines Obs. in Spain, 2 in MPEC 2012-Q23 -- C/2012 K5, C/2008 S3
J53Posadas Obs. in Spain, 4 in MPECs 2012-Q21 & 2012-Q23 -- 2012 PG5, P/2012 NJ, C/2010 S1, 2009 AV
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 11 in MPEC 2012-Q23 -- P/2012 O2, C/2012 L3, C/2012 L1, C/2012 K8, C/2012 K5, P/2012 K3, C/2012 CH17, C/2011 L4, P/2011 JB15, 262P, 189P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-Q23 -- C/2012 K6
939Rodeno Obs. in Spain, 4 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 K5, C/2012 J1, 260P
C09Rouet Obs. in France, 3 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 J1, 189P
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2012-Q21 -- 2012 PK24
B70Sant Celoni Obs. in Spain, 2 in MPEC 2012-Q23 -- P/2012 NJ, C/2010 S1
E12Siding Spring Survey in New South Wales, 1 in MPEC 2012-Q22 -- 2012 QV2
J84South Obs. in England, 1 in MPEC 2012-Q21 -- 2009 AV
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-Q23 -- 261P
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2012-Q23 -- C/2012 J1
A78Stia Obs. in Italy, 4 in MPEC 2012-Q21 -- 2012 PS17, 2012 PG6, 217013, 105140
A71Stixendorf Obs. in Austria, 12 in MPEC 2012-Q23 -- P/2012 O3, C/2012 L1, C/2012 K8, C/2012 K5, P/2012 K3, C/2011 F1, 262P, 260P, 189P, 185P, 160P, 96P
A98Taurus-1 Obs. in Belarus, 6 in MPECs 2012-Q21 & 2012-Q23 -- C/2012 K5, C/2012 J1, C/2011 F1, C/2010 S1, 2009 AV, 260P
194Tivoli Obs. in Namibia, 1 in MPEC 2012-Q22 -- 2012 QV2
B51Vallauris Obs. in France, 6 in MPEC 2012-Q23 -- P/2012 NJ, C/2012 L2, C/2010 S1, 260P, 189P, 96P
198Wildberg Obs. in Germany, 1 in MPEC 2012-Q23 -- 119P
367Yatsuka Obs. in Japan, 3 in MPEC 2012-Q23 -- 260P, 185P, 168P
J08Zonalunar Obs. in Spain, 1 in MPEC 2012-Q23 -- C/2012 K5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 August '12

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
2012 PK24JPL Sentry15412032-2079664.4e-05-3.62-4.040JPL: "Analysis based on 14 observations spanning 5.6789 days (2012-Aug-13.41356 to 2012-Aug-19.09243)." Diameter approximately 0.064 km. from mean, weighted H=23.6.
NEODyS15412033-2100255.05e-05-3.60-3.770NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2012-08-13.414 to 2012-08-19.093."
2012 PA20JPL Sentry1541209011.2e-10-8.47-8.470JPL: "Analysis based on 19 observations spanning 4.7727 days (2012-Aug-13.42278 to 2012-Aug-18.195517)." Diameter approximately 0.150 km. from mean, weighted H=21.8.

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 19 August '12

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

1908Grabbed MPEC 2012-Q23 - Observations and Orbits of Comets - see above
1554Generated Traffic Report
1541Noted that JPL Sentry has updated its 2012 PA20 risk assessment - see above
Noted that JPL Sentry has updated its 2012 PK24 risk assessment - see above
Noted that NEODyS has updated its 2012 PK24 risk assessment - see above
Grabbed MPEC 2012-Q21 - Daily Orbit Update - see above
Grabbed MPEC 2012-Q22 - 2012 QV2 - see above