Contents  on 7 May '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 7 May '13

No objects reported inside ten LD

There are no asteroids reported within ten lunar distances (LD) of Earth today, and none are known to be coming that close until late July.

This report was updated at 2104 UTC with the discovery of departed intruder 2013 HT25 (MPEC). This tiny object was observed for 4.5 hours on April 19th and is preliminarily calculated to have been deep inside the Earth-Moon system the day before. It is now out of view for almost all observers. Today's first traffic report was generated at 1343 UTC with follow-up in today's DOU MPEC for 2013 JF1.



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 7 May '13

The MPC's NEO Confirmation Page has 12 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve objects listed. Of these, four were "one nighters." The Tracking News counted a total of 27 listings on the NEOCP on this day.

New MPECs  on 7 May '13

Minor Planet Electronic Circulars

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


<< OOC on 7 May '13 >> MPEC 2013-J25 - "22:36 UT" - Observations and Orbits of Comets


MPEC 2013-J24 - "18:47 UT" - 2013 HT25


<< DOU on 7 May '13 >>  MPEC 2013-J23 - "06:04 UT" - Daily Orbit Update

Observers  on 7 May '13

A total of 82 observers appeared in this day's MPECs.

CodeObserver / observatory
J97Alginet Obs. in Spain, 2 in MPEC 2013-J25 -- C/2012 S1, C/2011 R1
Z74Amanecer de Arrakis Obs., 3 in MPEC 2013-J25 -- C/2011 J2, 117P, 63P
I47Auger Obs. in Argentina, 1 in MPEC 2013-J25 -- C/2012 S1
C34Baja Obs. in Hungary, 4 in MPEC 2013-J25 -- C/2012 S1, C/2012 K1, C/2011 R1, C/2011 L4
069Baldone Obs. in Latvia, 2 in MPEC 2013-J25 -- C/2012 S1, C/2011 L4
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-J23 -- 360191
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-J25 -- C/2013 G6
I99Blanquita Obs. in Spain, 5 in MPEC 2013-J25 -- C/2011 R1, C/2011 J2, C/2006 S3, 117P, 63P
B59Borken Obs. in Germany, 1 in MPEC 2013-J25 -- 63P
B96Brixiis Obs. in Belgium, 12 in MPEC 2013-J25 -- C/2013 G5, C/2013 F1, C/2012 X1, C/2012 S1, C/2012 K1, C/2012 F3, P/2012 B1, C/2011 R1, C/2011 L4, C/2010 R1, 175P, 63P
B20Carmelita Obs. in Spain, 1 in MPEC 2013-J25 -- C/2011 L4
I72Carpe Noctem Obs., 14 in MPEC 2013-J25 -- C/2012 X1, C/2012 S1, C/2012 K1, P/2012 B1, C/2011 R1, C/2011 L4, C/2011 J2, C/2010 R1, C/2006 S3, 273P, 256P, 175P, 117P, 63P
160Castelmartini Obs. in Italy, 17 in MPEC 2013-J25 -- C/2013 G6, C/2012 X1, C/2012 S3, C/2012 S1, C/2012 K1, P/2012 B1, C/2011 UF305, C/2011 R1, C/2011 L4, C/2010 S1, C/2010 R1, C/2009 P1, 257P, 256P, 175P, 125P, 63P
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2013-J24 & 2013-J25 -- 2013 HT25, C/2013 G7, C/2013 F1, C/2012 K1, C/2010 R1, 273P, 272P, 256P, 175P, 103P, 98P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPEC 2013-J23 -- 2013 JY2, 2013 JF1, 2013 HJ19, 2013 FD11, 2013 ER89, 2013 DR9, 2011 DL19, 164202, 7753
807~program code "~" (34) via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-J25 -- C/2013 A1
A77Chante-Perdrix Obs. in France, 2 in MPEC 2013-J25 -- C/2011 R1, 63P
Z83Chicharronian 3C Obs., 3 in MPEC 2013-J25 -- C/2012 X1, C/2012 S1, C/2011 J2
J01Cielo Profundo Obs. in Spain, 6 in MPEC 2013-J25 -- C/2013 G7, C/2013 G6, C/2012 K1, C/2011 R1, C/2011 L4, 29P
K20Danastro Obs., 3 in MPEC 2013-J25 -- C/2012 S1, C/2011 J2, 63P
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-J25 -- C/2012 S1
C80Don Obs., 3 in MPEC 2013-J25 -- C/2010 S1, C/2010 R1, 63P
J19El Maestrat Obs. in Spain, 1 in MPEC 2013-J25 -- C/2011 L4
I57Elche Obs., 6 in MPEC 2013-J25 -- C/2012 X1, C/2012 S1, C/2012 K1, C/2011 R1, C/2011 J2, 98P
Z81Estrella de Mar Obs., 1 in MPEC 2013-J25 -- 273P
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-J23 -- 2013 JX2
C18Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2013-J25 -- C/2012 K1
C73Galati Obs. in Romania, 3 in MPEC 2013-J25 -- C/2012 K1, C/2011 R1, 273P
372Geisei Obs. in Japan, 9 in MPEC 2013-J25 -- C/2013 H1, C/2013 G7, C/2013 G6, C/2013 F1, P/2013 EV9, C/2013 E2, C/2012 S1, C/2012 L2, 273P
203GiaGa Obs. in Italy, 1 in MPEC 2013-J25 -- C/2011 R1
J95Great Shefford Obs. in England, 1 in MPEC 2013-J25 -- C/2010 R1
511Haute Provence Obs. in Germany, 1 in MPEC 2013-J25 -- 281P
C43Hoyerswerda Obs. in Germany, 5 in MPEC 2013-J25 -- C/2011 R1, C/2011 L4, C/2011 J2, 273P, 63P
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-J25 -- C/2006 S3
C32Ka-Dar Obs. TAU Station in Russia, 5 in MPEC 2013-J25 -- C/2012 S1, 280P, 274P, 134P, 78P
Q24Katori Obs., 8 in MPEC 2013-J25 -- C/2013 E2, C/2012 X1, C/2012 S1, P/2012 B1, C/2011 J2, 273P, 175P, 63P
585Kiev Comet Station in the Ukraine, 11 in MPEC 2013-J25 -- C/2013 G7, C/2012 X1, C/2012 V2, P/2012 US27, C/2012 S1, P/2012 B1, C/2011 R1, C/2011 J2, C/2006 S3, 63P, 29P
D95Kurihara Obs. in Japan, 20 in MPEC 2013-J25 -- C/2013 G9, C/2013 G7, C/2013 G6, C/2013 F1, P/2013 EV9, C/2013 E2, C/2012 S3, C/2012 S1, C/2012 K8, C/2012 K1, C/2012 F3, P/2012 B1, C/2011 UF305, C/2011 R1, C/2011 L4, C/2010 S1, C/2010 R1, 278P, 117P, 29P
K92LCOGT Sutherland B in South Africa, 1 in MPEC 2013-J25 -- P/2013 EV9
704LINEAR in New Mexico, 1 in MPEC 2013-J25 -- 175P
212La Dehesilla Obs. in Spain, 11 in MPEC 2013-J25 -- C/2013 F2, C/2012 S1, P/2012 B1, C/2011 R1, C/2011 J2, C/2006 S3, 280P, 273P, 175P, 63P, 29P
J38La Vara Obs. in Spain, 8 in MPEC 2013-J25 -- C/2012 X1, C/2012 S1, C/2011 R1, C/2011 J2, C/2006 S3, 117P, 63P, 29P
J134program code 4 via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2013-J25 -- C/2012 S1
844Los Molinos Obs. in Uruguay, 1 in MPEC 2013-J25 -- C/2006 S3
130Lumezzane Obs. in Italy, 4 in MPEC 2013-J25 -- C/2013 H1, C/2013 F1, C/2006 S3, 117P
K38M57 Obs., 2 in MPEC 2013-J25 -- P/2013 EV9, C/2012 S1
C10Maisoncelles Obs. in France, 5 in MPEC 2013-J25 -- C/2013 G9, C/2013 G7, C/2013 G6, 273P, 29P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-J25 -- C/2013 A1
213Montcabre Obs. in Spain, 8 in MPEC 2013-J25 -- C/2013 G5, C/2012 S1, C/2012 K1, C/2011 R1, C/2011 L4, C/2011 J2, 273P, 29P
945Monte Deva Obs. in Spain, 4 in MPEC 2013-J25 -- C/2012 S1, C/2011 L4, C/2011 J2, 63P
C91Montevenere Obs., 4 in MPEC 2013-J25 -- C/2012 S1, C/2011 R1, 273P, 63P
900Moriyama Obs. in Japan, 19 in MPEC 2013-J25 -- C/2013 H2, C/2013 H1, C/2013 G9, C/2013 G7, C/2013 G6, C/2013 F1, C/2012 X1, C/2012 S1, C/2012 K6, C/2012 K1, P/2012 B1, C/2011 R1, C/2011 L4, C/2011 J2, C/2010 R1, C/2006 S3, 273P, 63P, 29P
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2013-J25 -- C/2013 G6, C/2013 G3, C/2013 G1, 169P, 103P
J93Mt. Tuffley Obs. in England, 2 in MPECs 2013-J23 & 2013-J25 -- C/2011 L4, 137170
C23Olmen Obs. in Belgium, 20 in MPEC 2013-J25 -- C/2013 H1, C/2013 G5, C/2012 X1, C/2012 S1, C/2012 K1, P/2012 B1, C/2011 R1, C/2011 L4, C/2011 J2, C/2010 S1, C/2010 R1, C/2006 S3, 273P, 257P, 256P, 244P, 175P, 117P, 98P, 63P
I41Palomar Transient Factory in southern California, 1 in MPEC 2013-J25 -- C/2011 J2
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2013-J24 & 2013-J25 -- 2013 HT25, P/2013 G4, C/2013 G3, 278P, 117P, 103P
A32Panker Obs. in Germany, 3 in MPEC 2013-J25 -- C/2012 X1, C/2011 L4, C/2011 J2
H23Pear Tree Obs. in Florida, 1 in MPEC 2013-J25 -- C/2011 R1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPEC 2013-J25 -- C/2013 H1, C/2013 G7, C/2013 F2, C/2013 F1, C/2012 X1, C/2012 S1, C/2012 K1, P/2012 B1, C/2011 R1, C/2011 J2, C/2006 S3, 273P, 175P, 63P
D29Purple Mtn. Obs. Xuyi Station in China, 3 in MPEC 2013-J25 -- C/2013 G7, C/2010 R1, 175P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 9 in MPEC 2013-J25 -- C/2012 K1, C/2011 F1, C/2006 S3, 256P, 244P, 175P, 125P, 117P, 98P
D03Rantiga Obs., 1 in MPEC 2013-J25 -- 276P
939Rodeno Obs. in Spain, 5 in MPEC 2013-J25 -- C/2012 S1, C/2011 J2, 175P, 117P, 63P
C95SATINO-1 in France, 3 in MPECs 2013-J23 & 2013-J25 -- P/2013 EV9, C/2011 L4, 242643
461SZTE Asteroid Program in Hungary, 5 in MPEC 2013-J25 -- C/2013 H1, C/2013 G5, C/2012 S1, C/2011 J2, 49P
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2013-J25 -- C/2012 S1
B70Sant Celoni Obs. in Spain, 3 in MPEC 2013-J25 -- C/2013 H1, 273P, 117P
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-J25 -- C/2011 L4
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2013-J25 -- C/2013 G7, C/2013 G1, C/2013 A1
510Siegen Obs. in Germany, 1 in MPEC 2013-J25 -- C/2011 L4
G68Sierra Stars Obs. in northern California, 1 in MPEC 2013-J25 -- C/2012 K1
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 3 in MPEC 2013-J25 -- C/2012 S1, 273P, 63P
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2013-J23 & 2013-J25 -- 2013 GS66, P/2013 A2, C/2012 S1
C36Starry Wanderer Obs. in Belarus, 3 in MPEC 2013-J25 -- C/2012 K1, C/2011 R1, C/2010 S1
926Tenagra II Obs. in Arizona, 4 in MPEC 2013-J25 -- C/2013 H2, C/2013 G7, C/2013 G1, C/2006 S3
I76Tesla Obs. in Spain, 1 in MPEC 2013-J25 -- C/2012 S1
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2013-J25 -- C/2012 K1
C90Vinyols Obs., 1 in MPEC 2013-J25 -- C/2011 J2
367Yatsuka Obs. in Japan, 17 in MPEC 2013-J25 -- C/2013 H2, C/2013 H1, C/2013 G7, C/2013 G6, C/2013 F1, P/2013 EV9, C/2012 V2, C/2012 S1, C/2012 L2, P/2012 B1, C/2011 R1, C/2011 L4, C/2011 J2, C/2010 S1, C/2006 S3, 273P, 63P
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-J25 -- 273P
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-J25 -- C/2012 S1
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 15 in MPEC 2013-J25 -- C/2013 H2, C/2013 H1, C/2013 G8, C/2013 G7, P/2013 G4, C/2013 E2, C/2012 V2, C/2012 T5, C/2012 T4, C/2012 K6, C/2011 L4, C/2007 D1, 273P, 168P, 29P
I89iTelescope Obs. Nerpio in Spain, 2 in MPEC 2013-J25 -- C/2012 X1, C/2011 J2
Q62"program code '"' (11) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-J25 -- C/2013 G6
Q621program code 1 via iTelescope Obs. Siding Spring in New South Wales, 7 in MPEC 2013-J25 -- P/2013 G4, C/2013 G3, C/2013 G2, C/2013 F3, C/2012 K6, 197P, 17P
Q624program code 4 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-J25 -- C/2013 G6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 May '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 HT25JPL Sentry2102201712.2e-06-5.90-5.900JPL: "Analysis based on 8 observations spanning .18764 days (2013-Apr-19.286011 to 2013-Apr-19.473653)." Diameter approximately 0.006 km. from mean, weighted H=28.8.
NEODyS21022017-201713.03e-06-5.78-5.780NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2013-04-19.287 to 2013-04-19.474."

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 7 May '13

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

2359Grabbed MPEC 2013-J25 - Observations and Orbits of Comets - see above
2104Updated Traffic Report
2102Noted that JPL Sentry has posted 2013 HT25 as an impact risk - see above
Noted that NEODyS has posted 2013 HT25 as an impact risk - see above
1920Grabbed MPEC 2013-J24 - 2013 HT25 - see above
1333Grabbed MPEC 2013-J23 - Daily Orbit Update - see above