Contents  on 19 September '07

Resources:

Note: Until September 16th this daily news page, which had included links to news and science papers as well as some occasional original reporting, was called Major News About Minor Objects. Without the news-link and science-link sections, this page was renamed as The Tracking News to more more accurately reflect its continuing purpose.

The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site.

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 this year 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.

NEOCP Activity  on 19 September '07

The MPC's NEO Confirmation Page has 10 listings: 4 new, 6 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and six updated listings. Of these, eight were "one nighters." So far Tracking News has counted a total of sixteen objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 19 September '07

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been thirteen MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-S29 - "22:41 UT" - 2004 VN112


MPEC 2007-S28 - "22:20 UT" - 2007 RT19


MPEC 2007-S27 - "22:01 UT" - 2003 SR422


MPEC 2007-S26 - "15:45 UT" - Observations of Comets


MPEC 2007-S25 - "15:32 UT" - Comet P/2007 R3 (Gibbs)


MPEC 2007-S24 - "15:25 UT" - Comet P/2007 R2 (Gibbs)


MPEC 2007-S23 - "15:20 UT" - Comet P/2007 R1 (Larson)


MPEC 2007-S22 - "15:15 UT" - Comet C/2007 Q3 (Siding Spring)


MPEC 2007-S21 - "15:11 UT" - Comet P/2007 Q2 (Gilmore)


MPEC 2007-S20 - "15:08 UT" - Comet C/2007 Q1 (Garradd)


MPEC 2007-S19 - "15:04 UT" - Comet C/2007 N3 (Lulin)


<< DOU on 19 Sept. '07 >>  MPEC 2007-S18 - "06:08 UT" - Daily Orbit Update


MPEC 2007-S17 - "03:01 UT" - 2007 SJ

Observers  on 19 September '07

A total of 60 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 7 in MPECs 2007-S23, 2007-S24 & 2007-S26 -- 2007 R2, 2007 R1, 2007 O1, 2007 M3, 2006 W3, 2006 M1, 46P
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2007-S18 -- 16636
H55Astronomical Research Obs. in Illinois, 7 in MPECs 2007-S18, 2007-S24, 2007-S25 & 2007-S28 -- 2007 RV9, 2007 RU17, 2007 RT19, 2007 R3, 2007 R2, 2007 PV27, 1999 SO5
J51Atlante Obs. in the Canary Islands, 4 in MPECs 2007-S23 & 2007-S26 -- 2007 R1, 188P, 50P, 8P
215Buchloe Obs. in Germany, 9 in MPECs 2007-S20, 2007-S21, 2007-S23, 2007-S24 & 2007-S26 -- 2007 R2, 2007 R1, 2007 Q2, 2007 Q1, 2007 M3, 2007 K1, 2005 L3, 2005 B1, 113P
235CAST Obs. in Italy, 11 in MPECs 2007-S25 & 2007-S26 -- 2007 R3, 2007 H1, 2007 G1, 2006 OF2, 2005 S4, 2005 L3, 188P, 93P, 50P, 29P, 8P
B14Ca del Monte Obs. in Italy, 1 in MPEC 2007-S26 -- 2006 OF2
B20Carmelita Obs. in Spain, 1 in MPEC 2007-S26 -- 2006 OF2
703Catalina Sky Survey in Arizona, 5 in MPECs 2007-S18, 2007-S20 & 2007-S26 -- 2007 Q1, 2005 SG, 2003 EF54, 17182, 93P
807Cerro Tololo Inter-American Obs. in Chile, 2 in MPECs 2007-S27 & 2007-S29 -- 2004 VN112, 2003 SR422
A77Chante-Perdrix Obs. in France, 3 in MPEC 2007-S26 -- 2007 K1, 2006 OF2, 8P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-S17 -- 2007 SJ
808El Leoncito Obs. in Argentina, 5 in MPEC 2007-S18 -- 2007 PE8, 2007 FV42, 2007 DT103, 2004 KE1, 159495
157Frasso Sabino Obs. in Italy, 2 in MPECs 2007-S19 & 2007-S23 -- 2007 R1, 2007 N3
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2007-S18 -- 1988 PA
145Gravenwezel, 1 in MPEC 2007-S26 -- 50P
J95Great Shefford Obs. in England, 3 in MPECs 2007-S17, 2007-S18 & 2007-S28 -- 2007 SJ, 2007 RT19, 2007 RS146
442Gualba Obs. in Spain, 1 in MPEC 2007-S26 -- 29P
A17Guidestar Obs. in Germany, 1 in MPEC 2007-S17 -- 2007 SJ
B43Hennef Obs., 1 in MPEC 2007-S26 -- 2005 S4
D88Hiratsuka Obs., 3 in MPEC 2007-S26 -- 2007 M3, 2007 G1, 2005 L3
048Hradec Kralove Obs. in the Czech Republic, 8 in MPEC 2007-S26 -- 2007 N1, 2007 H1, 2007 G1, 2006 OF2, 188P, 93P, 50P, 17P
B19Iluro Obs. in Spain, 4 in MPEC 2007-S26 -- 2007 H1, 188P, 117P, 93P
B15Inastars Obs. in Germany, 4 in MPECs 2007-S17, 2007-S18 & 2007-S26 -- 2007 SJ, 2007 RW19, 2007 RU17, 2007 E1
987Isle of Man Obs. on the Isle of Man, 1 in MPEC 2007-S26 -- 2007 G1
J44Iturrieta Obs. in Spain, 1 in MPEC 2007-S26 -- 50P
415Kambah Obs. in Australia, 6 in MPECs 2007-S21 & 2007-S26 -- 2007 Q2, 2007 H1, 2006 U6, 136P, 113P, 46P
400Kitami Obs. in Japan, 1 in MPEC 2007-S19 -- 2007 N3
704LINEAR in New Mexico, 18 in MPECs 2007-S17, 2007-S18, 2007-S19, 2007-S23, 2007-S24, 2007-S26 & 2007-S28 -- 2007 SJ, 2007 SH, 2007 RU9, 2007 RT19, 2007 RP15, 2007 R2, 2007 R1, 2007 O1, 2007 N3, 2007 E1, 2006 S5, 2006 OF2, 1988 PA, 188P, 136P, 128P, 113P, 29P
699LONEOS in Arizona, 5 in MPECs 2007-S23 & 2007-S26 -- 2007 R1, 2006 S3, 2006 OF2, 139P, 113P
J76La Murta Obs. in Spain, 3 in MPEC 2007-S26 -- 2007 G1, 2006 OF2, 2005 L3
540Linz Obs. in Austria, 1 in MPEC 2007-S18 -- 2007 RP9
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2007-S23 -- 2007 R1
130Lumezzane Obs. in Italy, 6 in MPECs 2007-S19 & 2007-S26 -- 2007 N3, 2007 H1, 2006 OF2, 2005 S4, 93P, 17P
232Masquefa Obs. in Spain, 5 in MPEC 2007-S26 -- 2007 M3, 2007 H1, 2006 OF2, 93P, 50P
A06Mataro Obs. in Spain, 3 in MPEC 2007-S26 -- 2006 OF2, 2005 L3, 93P
J46Montana Blanca Obs. in the Canary Islands, 2 in MPEC 2007-S26 -- 188P, 46P
J45Montana Cabreja Obs. in the Canary Islands, 2 in MPEC 2007-S26 -- 2007 H1, 2006 OF2
213Montcabre Obs. in Spain, 6 in MPEC 2007-S26 -- 2007 M3, 2007 G1, 2006 S3, 2006 OF2, 2005 L3, 188P
945Monte Deva Obs. in Spain, 4 in MPEC 2007-S26 -- 2007 H1, 2007 G1, 2005 L3, 93P
900Moriyama Obs. in Japan, 12 in MPECs 2007-S23 & 2007-S26 -- 2007 R1, 2007 N1, 2007 H1, 2006 U6, 2006 S5, 2006 OF2, 2006 M1, 2006 K1, 188P, 136P, 93P, 50P
G96Mt. Lemmon Survey in Arizona, 7 in MPECs 2007-S18, 2007-S19, 2007-S24 & 2007-S26 -- 2007 R2, 2007 N3, 1999 TL12, 1999 SO5, 4486, 139P, 113P
J47Nazaret Obs. in Spain, 6 in MPECs 2007-S19, 2007-S21, 2007-S24, 2007-S25 & 2007-S26 -- 2007 R3, 2007 R2, 2007 Q2, 2007 N3, 2006 OF2, 188P
A24New Millennium Obs. in Italy, 8 in MPECs 2007-S18 & 2007-S26 -- 2007 PE8, 2007 LR32, 2005 S4, 2002 NN4, 16636, 188P, 139P, 117P
423North Ryde Obs. in New South Wales, 4 in MPECs 2007-S19, 2007-S22 & 2007-S26 -- 2007 Q3, 2007 N3, 2006 U6, 46P
586Pic du Midi Obs. in France, 1 in MPEC 2007-S26 -- 139P
J53Posadas Obs. in Spain, 1 in MPEC 2007-S26 -- 2006 OF2
H06RAS Obs. Mayhill in New Mexico, 2 in MPEC 2007-S26 -- 93P, 50P
473Remanzacco Obs. in Italy, 5 in MPECs 2007-S17, 2007-S19, 2007-S21, 2007-S24 & 2007-S26 -- 2007 SJ, 2007 R2, 2007 Q2, 2007 N3, 2006 OF2
939Rodeno Obs. in Spain, 6 in MPEC 2007-S26 -- 2007 M3, 2007 H1, 2007 G1, 2005 L3, 188P, 93P
B04Saint-Barthelemy Obs. in Italy, 2 in MPECs 2007-S17 & 2007-S18 -- 2007 SJ, 2007 RY19
204Schiaparelli Obs. in Italy, 5 in MPECs 2007-S24 & 2007-S26 -- 2007 R2, 2007 O1, 2007 K1, 2005 Q1, 113P
E12Siding Spring Survey in New South Wales, 3 in MPECs 2007-S18 & 2007-S26 -- 2006 K1, 2001 RY47, 46P
510Siegen Obs. in Germany, 1 in MPEC 2007-S26 -- 93P
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2007-S18 & 2007-S21 -- 2007 RY8, 2007 RS12, 2007 Q2, 2003 BT47, 2002 TD66, 154330
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2007-S18 -- 2007 RQ9
A97Stammersdorf Obs. in Austria, 2 in MPEC 2007-S26 -- 2007 H1, 2006 OF2
673Table Mtn. Obs. in southern California, 2 in MPECs 2007-S21 & 2007-S26 -- 2007 Q2, 2007 O1
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-S28 -- 2007 RT19
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2007-S26 -- 2007 H1, 2006 OF2, 2005 S4, 2005 L3, 136P, 93P
B42Vitebsk Obs. in Belarus, 6 in MPECs 2007-S21, 2007-S23 & 2007-S26 -- 2007 R1, 2007 Q2, 2007 H1, 2006 W3, 2006 OF2, 93P

Impact Risk Monitoring  on 19 September '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) 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
2007 SJNEODyS13542011-2089436.03e-08-2.41-2.740NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2007/09/17.183 to 2007/09/19.096."
JPL13532014-2106252.6e-08-3.03-3.160JPL: "Analysis based on 22 observations spanning 1.9134 days (2007-Sep-17.18208 to 2007-Sep-19.09543)." Diameter approximately 1.913 km. from mean, weighted H=16.2.
2007 RY19NEODyS13542016-2090903.43e-05-3.25-3.830NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2007/09/14.354 to 2007/09/19.070."
JPL13532016-2085592.8e-05-3.35-3.960JPL: "Analysis based on 23 observations spanning 4.7161 days (2007-Sep-14.35284 to 2007-Sep-19.0689)." Diameter approximately 0.110 km. from mean, weighted H=22.4.
2007 RU9NEODyS15242018-203023.85e-07-3.96-3.960NEODyS: "Based on 69 optical observations (of which 2 are rejected as outliers) from 2007/09/10.287 to 2007/09/18.229."
JPL13532020-206944.6e-07-3.82-4.010JPL: "Analysis based on 67 observations spanning 7.9421 days (2007-Sep-10.28596 to 2007-Sep-18.22807)." Diameter approximately 0.228 km. from mean, weighted H=20.9.
2007 RT146NEODyS13542012-2090435.18e-09-4.88-5.370NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/09/15.395 to 2007/09/18.418."

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 an 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" for more about this.

Chronology  on 19 September '07

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

2258Grabbed MPEC 2007-S27 - 2003 SR422 - see above
Grabbed MPEC 2007-S28 - 2007 RT19 - see above
Grabbed MPEC 2007-S29 - 2004 VN112 - see above
1614Grabbed MPEC 2007-S24 - Comet P/2007 R2 (Gibbs) - see above
Grabbed MPEC 2007-S25 - Comet P/2007 R3 (Gibbs) - see above
Grabbed MPEC 2007-S26 - Observations of Comets - see above
1524Noted that NEODyS has updated its 2007 RU9 risk assessment - see above
Grabbed MPEC 2007-S19 - Comet C/2007 N3 (Lulin) - see above
Grabbed MPEC 2007-S20 - Comet C/2007 Q1 (Garradd) - see above
Grabbed MPEC 2007-S21 - Comet P/2007 Q2 (Gilmore) - see above
Grabbed MPEC 2007-S22 - Comet C/2007 Q3 (Siding Spring) - see above
Grabbed MPEC 2007-S23 - Comet P/2007 R1 (Larson) - see above
1354Noted that NEODyS has updated its 2007 RY19 risk assessment - see above
Grabbed MPEC 2007-S18 - Daily Orbit Update - see above
1353Noted that NEODyS has posted 2007 RT146 as an impact risk - see above
Noted that JPL has updated its 2007 RU9 risk assessment - see above
Noted that JPL has updated its 2007 RY19 risk assessment - see above
Noted that JPL has posted 2007 SJ as an impact risk - see above
Noted that NEODyS has posted 2007 SJ as an impact risk - see above
0503Grabbed MPEC 2007-S17 - 2007 SJ - see above