Contents  on 18 September '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 18 September '12

Three objects reported inside ten LD

There are three newly announced visitors reported traveling within ten lunar distances (LD) of our planet today. 2012 SW2 enters Earth's Hill sphere, traveling from 6.08 to 2.83 LD. Further away, 2012 SZ2 is inbound from 9.31 to 8.44 LD and 2012 SB3 departs from inside ten LD, passing from 9.5 to 11.2 LD*.

Next up, 2012 RK15 arrives inside ten LD on September 23rd and 2010 JK1 on November 22nd.

This report was updated at 1946 UTC with new discoveries 2012 SB3 (MPEC), 2012 SZ2 (MPEC), and 2012 SW2 (MPEC). Today's first traffic report was generated at 1440 UTC with follow-up in today's DOU MPEC for departed 2012 RM15, 2012 RK15, and 2012 QG42.


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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 18 September '12

The MPC's NEO Confirmation Page has 15 listings

When last checked at 2337 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fifteen objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 36 listings on the NEOCP today.

New MPECs  on 18 September '12

Minor Planet Electronic Circulars

As of last check at 2346 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< OOC on 18 Sept. '12 >> MPEC 2012-S31 - "20:22 UT" - Observations and Orbits of Comets


MPEC 2012-S30 - "16:23 UT" - 2012 SB3


MPEC 2012-S29 - "16:21 UT" - 2012 SA3


MPEC 2012-S28 - "16:18 UT" - 2012 SZ2


MPEC 2012-S27 - "16:16 UT" - 2012 SY2


MPEC 2012-S26 - "16:13 UT" - 2012 SX2


MPEC 2012-S25 - "16:11 UT" - 2012 SW2


<< DOU on 18 Sept. '12 >>  MPEC 2012-S24 - "06:02 UT" - Daily Orbit Update

Observers  on 18 September '12

A total of 86 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 21 in MPEC 2012-S31 -- P/2012 O3, P/2012 NJ, C/2012 L3, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, P/2011 W1, C/2011 UF305, C/2011 S2, C/2011 L4, C/2011 J2, C/2011 F1, C/2011 A3, C/2010 S1, C/2008 S3, P/2003 T12, 185P, 96P, 78P, 65P
J24Altamira Obs. in the Canary Islands, 17 in MPEC 2012-S31 -- C/2012 Q1, P/2012 O3, P/2012 NJ, C/2012 L2, C/2012 J1, C/2011 A3, C/2010 S1, C/2008 S3, C/2008 FK75, 262P, 261P, 260P, 189P, 168P, 160P, 158P, 71P
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2012-S31 -- 261P
H21Astronomical Research Obs. Westfield in Illinois, 20 in MPECs 2012-S24, 2012-S26 & 2012-S27 -- 2012 SY2, 2012 SX2, 2012 RP15, 2012 RO15, 2012 RM2, 2012 RM15, 2012 RH15, 2012 RH10, 2012 RG15, 2012 QY14, 2012 QJ2, 2012 QG49, 2012 QG42, 2012 QE50, 2012 QC18, 2012 QB17, 2012 PS17, 2012 PP24, 2012 LE11, 329520
170Begues Obs. in Spain, 2 in MPEC 2012-S31 -- C/2012 J1, 260P
B75Betelgeuse Station in Italy, 4 in MPEC 2012-S31 -- P/2012 NJ, C/2012 J1, C/2010 S1, C/2008 S3
C86Blanes Obs. in Spain, 2 in MPEC 2012-S31 -- C/2012 J1, 260P
B96Brixiis Obs. in Belgium, 6 in MPEC 2012-S31 -- C/2010 S1, C/2008 S3, 262P, 260P, 189P, 160P
215Buchloe Obs. in Germany, 3 in MPEC 2012-S31 -- P/2012 O1, P/2006 Q2, 48P
I72Carpe-Noctem Obs., 7 in MPEC 2012-S31 -- P/2012 NJ, C/2012 L1, C/2012 J1, C/2010 S1, 262P, 260P, 168P
160Castelmartini Obs. in Italy, 19 in MPECs 2012-S24 & 2012-S31 -- 2012 QP17, 2012 QE50, P/2012 NJ, C/2012 J1, C/2011 F1, C/2010 S1, C/2008 S3, 334412, 333889, 330825, 329520, 276397, 219071, 214869, 262P, 261P, 260P, 168P, 160P
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2012-S24 & 2012-S31 -- P/2012 O3, 2012 LE11, C/2012 L3, 2012 HO15, 2012 BZ76, 2001 SG262, 333889, 326732, 303262, 29075, 163732, 163454, 5646, 160P, 158P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 10 in MPEC 2012-S24 -- 2012 RN6, 2012 RN15, 2012 RL2, 2012 RK15, 2012 RG3, 2012 RF15, 2012 RB3, 2009 SD229, 232368, 5131
A77Chante-Perdrix Obs. in France, 3 in MPEC 2012-S31 -- C/2012 K1, C/2012 CH17, 168P
J01Cielo Profundo Obs. in Spain, 7 in MPEC 2012-S31 -- C/2012 Q1, P/2012 NJ, C/2012 K5, C/2012 J1, C/2010 S1, 260P, 168P
850Cordell-Lorenz Obs. in Tennessee, 4 in MPEC 2012-S31 -- C/2012 J1, C/2010 S1, 260P, 119P
B50Corner Obs. in Germany, 1 in MPEC 2012-S24 -- 2012 QE50
106Crni Vrh Obs. in Slovenia, 2 in MPECs 2012-S24 & 2012-S31 -- 237442, 261P
958Dax Obs. in France, 23 in MPEC 2012-S31 -- P/2012 O3, P/2012 NJ, C/2012 L3, C/2012 L2, C/2012 K8, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 A2, C/2011 UF305, C/2011 F1, C/2011 A3, C/2010 S1, C/2008 S3, C/2008 FK75, C/2006 S3, 261P, 260P, 185P, 168P, 160P, 96P, 71P
448Desert Moon Obs. in New Mexico, 5 in MPEC 2012-S24 -- 2012 QX17, 2012 QQ50, 2012 PP24, 1998 SE36, 275611
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPECs 2012-S24 & 2012-S31 -- 2012 QG42, 2012 QE50, C/2011 F1
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2012-S31 -- P/2006 U5
J36El Olivo Obs. in Spain, 12 in MPEC 2012-S31 -- P/2012 NJ, C/2012 J1, C/2010 S1, C/2009 S3, C/2008 S3, 261P, 260P, 189P, 168P, 160P, 158P, 2P
C74El Teatrillo de Lyra Obs. in Spain, 1 in MPEC 2012-S31 -- 260P
I57Elche Obs., 1 in MPEC 2012-S31 -- 260P
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 2 in MPEC 2012-S31 -- C/2011 L4, C/2006 S3
I88Fuensanta de Martos Obs., 1 in MPEC 2012-S31 -- 260P
B83Gieres Obs. in France, 4 in MPEC 2012-S31 -- P/2012 NJ, C/2012 J1, C/2010 S1, 260P
E94Gisborne Obs. in New Zealand, 3 in MPEC 2012-S31 -- C/2011 R1, C/2011 L4, C/2006 S3
D09Gromme Obs. in Belgium, 13 in MPEC 2012-S31 -- P/2012 NJ, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2, C/2011 UF305, C/2011 F1, C/2010 S1, C/2008 S3, C/2008 FK75, 260P, 168P, 160P
J81Guirguillano Obs. in Spain, 1 in MPEC 2012-S24 -- 2012 QG42
511Haute Provence Obs. in Germany, 1 in MPEC 2012-S31 -- C/2012 Q1
D00ISON-Kislovodsk Obs., 1 in MPEC 2012-S31 -- 260P
246KLENOT in the Czech Republic, 1 in MPEC 2012-S31 -- C/2012 Q1
682Kanab Obs. in Utah, 1 in MPEC 2012-S26 -- 2012 SX2
585Kiev Comet Station in the Ukraine, 3 in MPEC 2012-S31 -- P/2012 NJ, C/2012 J1, C/2011 F1
C40Kuban State Univ. Obs. in Russia, 4 in MPEC 2012-S31 -- C/2012 K5, C/2011 F1, C/2006 S3, 189P
D95Kurihara Obs. in Japan, 10 in MPEC 2012-S31 -- C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2011 F1, 260P, 185P, 168P, 96P
704LINEAR in New Mexico, 22 in MPECs 2012-S24, 2012-S28 & 2012-S31 -- 2012 SZ2, 2012 RS16, 2012 QJ2, P/2012 O3, 2012 HO15, 2008 SS251, 2002 TY68, 88263, 303262, 276397, 214869, 192642, 178871, 159635, 108906, 7350, 5731, 5587, 4587, 261P, 160P, 71P
J31La Axarquia Obs. in Spain, 1 in MPEC 2012-S31 -- C/2010 S1
J38La Vara Obs. in Spain, 9 in MPEC 2012-S31 -- P/2012 O3, P/2012 NJ, C/2012 K5, C/2012 K1, C/2012 J1, C/2010 S1, 260P, 168P, 160P
130Lumezzane Obs. in Italy, 2 in MPEC 2012-S31 -- C/2012 Q1, P/2012 O3
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2012-S25, 2012-S26, 2012-S27, 2012-S28, 2012-S29 & 2012-S30 -- 2012 SZ2, 2012 SY2, 2012 SX2, 2012 SW2, 2012 SB3, 2012 SA3
B82Maidbronn Obs. in Germany, 4 in MPEC 2012-S31 -- P/2012 O3, C/2012 K5, C/2010 S1, 262P
C10Maisoncelles Obs. in France, 10 in MPEC 2012-S31 -- C/2012 Q1, P/2012 NJ, C/2011 UF305, 260P, 168P, 160P, 71P, 65P, 37P, 2P
B10Mas des Gres Obs., 1 in MPEC 2012-S31 -- C/2012 K5
213Montcabre Obs. in Spain, 7 in MPEC 2012-S31 -- C/2012 K5, C/2012 J1, C/2012 A2, C/2011 F1, C/2010 S1, 168P, 2P
900Moriyama Obs. in Japan, 12 in MPEC 2012-S31 -- C/2012 Q1, P/2012 O3, P/2012 NJ, C/2012 K5, C/2012 K1, C/2012 J1, C/2011 A3, C/2010 S1, C/2008 FK75, 261P, 168P, 160P
474Mt. John Obs. in New Zealand, 7 in MPECs 2012-S24, 2012-S27, 2012-S28, 2012-S29 & 2012-S31 -- 2012 SZ2, 2012 SY2, 2012 SA3, 2012 RN15, 2012 QH49, 2012 QF49, P/2012 O1
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2012-S24, 2012-S25, 2012-S26, 2012-S27, 2012-S29, 2012-S30 & 2012-S31 -- 2012 SY2, 2012 SX2, 2012 SW2, 2012 SB3, 2012 SA3, 2012 RO15, 2012 PP24, 2012 BT23, 218863, 140158, 143P, 120P, 2P
J93Mt. Tuffley Obs. in England, 1 in MPEC 2012-S31 -- 260P
E07Murrumbateman Obs. in New South Wales, 5 in MPEC 2012-S31 -- C/2012 K6, C/2011 L4, C/2011 F1, C/2010 B1, 96P
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-S24 -- 2010 WE9
A13Naef Obs. in Switzerland, 2 in MPEC 2012-S24 -- 333311, 162900
J47Nazaret Obs. in Spain, 5 in MPEC 2012-S31 -- P/2012 NJ, C/2012 K5, C/2012 J1, C/2010 S1, 168P
0892Oleksandr V. Shulga via Nikolaev Obs. in the Ukraine, 4 in MPEC 2012-S31 -- P/2012 NJ, 260P, 168P, 160P
C47Nonndorf Obs. in Austria, 9 in MPEC 2012-S31 -- P/2012 NJ, C/2012 L2, C/2012 K5, C/2012 J1, C/2012 A2, C/2010 S1, 262P, 260P, 168P
C23Olmen Obs. in Belgium, 21 in MPEC 2012-S31 -- C/2012 Q1, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1, C/2008 S3, C/2008 FK75, C/2006 S3, 262P, 261P, 260P, 185P, 168P, 160P, 78P, 71P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2012-S31 -- C/2008 S3
H23Pear Tree Obs. in Florida, 2 in MPEC 2012-S31 -- C/2010 S1, 260P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2012-S31 -- P/2012 NJ
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-S31 -- 168P
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 7 in MPEC 2012-S31 -- C/2012 Q1, P/2012 O1, C/2011 A3, C/2010 U3, 262P, 160P, 96P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 11 in MPECs 2012-S24 & 2012-S31 -- 2012 RK15, C/2012 Q1, P/2012 O1, C/2012 C1, C/2011 O1, C/2008 S3, 261P, 160P, 152P, 120P, 71P
071Rhozen Obs. in Bulgaria, 3 in MPEC 2012-S31 -- C/2011 UF305, C/2011 L4, C/2010 S1
939Rodeno Obs. in Spain, 4 in MPEC 2012-S31 -- C/2012 J1, 260P, 168P, 160P
H36Sandlot Obs. in Kansas, 3 in MPECs 2012-S25, 2012-S28 & 2012-S30 -- 2012 SZ2, 2012 SW2, 2012 SB3
B70Sant Celoni Obs. in Spain, 2 in MPEC 2012-S31 -- 189P, 168P
B56Sant Pere Obs. in Spain, 1 in MPEC 2012-S31 -- C/2010 S1
B74Santa Maria de Montmagastrell Obs. in Spain, 3 in MPEC 2012-S31 -- P/2012 O3, C/2010 S1, 168P
204Schiaparelli Obs. in Italy, 4 in MPECs 2012-S25, 2012-S26, 2012-S27 & 2012-S29 -- 2012 SY2, 2012 SX2, 2012 SW2, 2012 SA3
C24Seveso Obs., 1 in MPEC 2012-S24 -- 2012 QB17
510Siegen Obs. in Germany, 4 in MPECs 2012-S24 & 2012-S31 -- 2012 QG42, C/2012 L2, C/2011 UF305, C/2011 F1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-S24 -- 5143
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2012-S24, 2012-S25, 2012-S26, 2012-S27 & 2012-S29 -- 2012 SY2, 2012 SX2, 2012 SW2, 2012 SA3, 2012 QZ17, 2012 QF42, 2012 LK11, 2012 JT17, 2010 OS22, 2010 OD101, 2010 OB101, 2010 HQ80, 2007 VX7, 2005 SH19, 2001 RQ3
C36Starry Wanderer Obs. in Belarus, 6 in MPEC 2012-S31 -- C/2012 J1, C/2008 S3, C/2008 FK75, 261P, 260P, 168P
A71Stixendorf Obs. in Austria, 11 in MPEC 2012-S31 -- C/2012 Q1, P/2012 O3, P/2012 NJ, C/2012 K5, C/2012 J1, 262P, 260P, 185P, 168P, 160P, 96P
I81Tarbatness Obs. in Scotland, 9 in MPEC 2012-S31 -- P/2012 NJ, C/2012 L1, C/2012 K5, C/2012 J1, C/2011 F1, C/2008 FK75, 260P, 168P, 160P
954Teide Obs. in the Canary Islands, 2 in MPECs 2012-S29 & 2012-S31 -- 2012 SA3, 160P
926Tenagra II Obs. in Arizona, 1 in MPEC 2012-S24 -- 2004 TL19
C35Terrassa Obs., 1 in MPEC 2012-S31 -- 168P
B18Terskol Obs. in Russia, 2 in MPEC 2012-S31 -- C/2012 J1, 260P
A48Verona Obs. in Italy, 1 in MPEC 2012-S31 -- P/2012 NJ
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2012-S31 -- P/2012 NJ, C/2012 J1, C/2008 S3, 262P, 260P, 168P
I42Westport Obs. in Massachusetts, 3 in MPEC 2012-S24 -- 2012 QY14, 2012 QO10, 2012 QB17
C42Xingming Obs. in China, 2 in MPEC 2012-S31 -- 168P, 96P
J08Zonalunar Obs. in Spain, 1 in MPEC 2012-S31 -- 260P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 September '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2346 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 SA3JPL Sentry1839210413.5e-10-8.09-8.090JPL: "Analysis based on 20 observations spanning 1.2587 days (2012-Sep-17.2824 to 2012-Sep-18.54106)." Diameter approximately 0.130 km. from mean, weighted H=22.2.
2012 RU16NEODyS14392036-208932.22e-06-6.20-6.260NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2012-09-15.350 to 2012-09-17.543."

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 September '12

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

2104Grabbed MPEC 2012-S31 - Observations and Orbits of Comets - see above
1946Updated Traffic Report
1839Noted that JPL Sentry has posted 2012 SA3 as an impact risk - see above
1638Grabbed MPEC 2012-S25 - 2012 SW2 - see above
Grabbed MPEC 2012-S26 - 2012 SX2 - see above
Grabbed MPEC 2012-S27 - 2012 SY2 - see above
Grabbed MPEC 2012-S28 - 2012 SZ2 - see above
Grabbed MPEC 2012-S29 - 2012 SA3 - see above
Grabbed MPEC 2012-S30 - 2012 SB3 - see above
1439Noted that NEODyS has posted 2012 RU16 as an impact risk - see above
Grabbed MPEC 2012-S24 - Daily Orbit Update - see above