Contents  on 13 September '07

Resources:

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.

Minor-Object News  on 13 September '07

Minor-Object Science  on 13 September '07

NEOCP Activity  on 13 September '07

The MPC's NEO Confirmation Page has 16 listings: 6 new, 10 updated

When last checked at 2356 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and ten updated listings. Of these, eleven were "one nighters." So far Major News has counted a total of 37 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 13 September '07

Minor Planet Electronic Circulars

As of last check at 2356 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-R71 - "20:14 UT" - 2007 RP15


MPEC 2007-R70 - "17:12 UT" - 2007 RV12


MPEC 2007-R69 - "17:06 UT" - 2007 RU12


MPEC 2007-R68 - "17:04 UT" - 2007 RT12


MPEC 2007-R67 - "17:01 UT" - 2007 RS12


MPEC 2007-R66 - "16:59 UT" - 2007 RR12


MPEC 2007-R65 - "16:56 UT" - 2007 RQ12


MPEC 2007-R64 - "16:53 UT" - 2007 RP12


MPEC 2007-R63 - "15:57 UT" - 2004 DM44


<< DOU on 13 Sept. '07 >>  MPEC 2007-R62 - "06:08 UT" - Daily Orbit Update

Observers  on 13 September '07

A total of 31 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-R64 -- 2007 RP12
I77CEAMIG-REA in Brazil, 1 in MPEC 2007-R63 -- 2004 DM44
703Catalina Sky Survey in Arizona, 6 in MPECs 2007-R62, 2007-R66, 2007-R69 & 2007-R70 -- 2007 RV12, 2007 RU12, 2007 RR12, 2007 RF5, 2003 EF54, 2002 EM6
151Eschenberg Obs. in Switzerland, 4 in MPECs 2007-R62 & 2007-R66 -- 2007 RY9, 2007 RR12, 2007 GS3, 1998 SD15
734Farpoint Obs. in Kansas, 1 in MPEC 2007-R64 -- 2007 RP12
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-R71 -- 2007 RP15
F653FTP education program via Faulkes Telescope North in Hawaii, 1 in MPEC 2007-R62 -- 2007 GS3
J95Great Shefford Obs. in England, 3 in MPECs 2007-R62, 2007-R63 & 2007-R64 -- 2007 RP12, 2007 RJ1, 2004 DM44
H51Greiner Research Obs. in Wisconsin, 5 in MPEC 2007-R62 -- 2007 RF2, 2007 QE3, 2007 PU11, 2007 OV, 2007 LR32
A17Guidestar Obs. in Germany, 2 in MPECs 2007-R63 & 2007-R66 -- 2007 RR12, 2004 DM44
240Herrenberg Obs. in Germany, 3 in MPEC 2007-R62 -- 2007 RJ1, 2007 RD1, 2007 PE8
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2007-R65 -- 2007 RQ12
704LINEAR in New Mexico, 1 in MPEC 2007-R71 -- 2007 RP15
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2007-R64 -- 2007 RP12
560Madonna di Dossobuono Obs. in Italy, 5 in MPEC 2007-R62 -- 2007 RJ1, 2007 QA2, 2007 PE8, 2007 LR32, 2003 OR14
711McDonald Obs. in Texas, 3 in MPECs 2007-R63, 2007-R66 & 2007-R69 -- 2007 RU12, 2007 RR12, 2004 DM44
G96Mt. Lemmon Survey in Arizona, 11 in MPECs 2007-R62, 2007-R63, 2007-R64, 2007-R67, 2007-R68 & 2007-R70 -- 2007 RY8, 2007 RX8, 2007 RV9, 2007 RV12, 2007 RT9, 2007 RT12, 2007 RS12, 2007 RP12, 2004 DM44, 2002 RT129, 138883
A13Naef Obs. in Switzerland, 1 in MPEC 2007-R69 -- 2007 RU12
A24New Millennium Obs. in Italy, 3 in MPEC 2007-R62 -- 2007 PE8, 2007 LR32, 16636
H45Petit Jean Mtn. South Obs. in Arkansas, 16 in MPEC 2007-R62 -- 2007 RJ1, 2007 RF2, 2007 RD1, 2007 QK2, 2007 PU11, 2007 PE8, 2007 OV, 2007 LR32, 2007 HE15, 2004 OT11, 2003 OR14, 2000 RW37, 1999 JU3, 1998 SD15, 86324, 145656
649Powell Obs. in Kansas, 2 in MPECs 2007-R63 & 2007-R66 -- 2007 RR12, 2004 DM44
D29Purple Mtn. Obs. XuYi Station in China, 3 in MPEC 2007-R62 -- 2007 OV, 100756, 5786
473Remanzacco Obs. in Italy, 3 in MPECs 2007-R62 & 2007-R71 -- 2007 RP15, 2007 LR32, 2002 NN4
204Schiaparelli Obs. in Italy, 2 in MPECs 2007-R64 & 2007-R66 -- 2007 RR12, 2007 RP12
E12Siding Spring Survey in New South Wales, 3 in MPECs 2007-R62 & 2007-R65 -- 2007 RQ12, 2007 LV, 2004 KE1
J84South Obs. in England, 1 in MPEC 2007-R66 -- 2007 RR12
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-R62 -- 2003 BT47
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2007-R62, 2007-R64, 2007-R67 & 2007-R68 -- 2007 RZ8, 2007 RU9, 2007 RT12, 2007 RS12, 2007 RR9, 2007 RP12, 2007 RG1, 2004 XP14, 1993 GD
A78Stia Obs. in Italy, 4 in MPEC 2007-R62 -- 2007 RJ1, 2007 RH1, 2007 RF2, 2007 RD1
6735Jim Young via Table Mtn. Obs. in southern California, 4 in MPECs 2007-R63, 2007-R64, 2007-R66 & 2007-R69 -- 2007 RU12, 2007 RR12, 2007 RP12, 2004 DM44
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2007-R62 -- 2000 QT7

Impact Risk Monitoring  on 13 September '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2356 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 RV9JPL14212011-21061873.9e-07-3.40-3.660JPL: "Analysis based on 15 observations spanning 1.9611 days (2007-Sep-10.28811 to 2007-Sep-12.24924)." Diameter approximately 0.344 km. from mean, weighted H=20.0.
NEODyS14212011-2089971.92e-07-3.51-3.740NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/09/10.289 to 2007/09/12.250."
2007 RU9JPL14212013-2105554.2e-06-2.50-2.710JPL: "Analysis based on 26 observations spanning 2.0776 days (2007-Sep-10.28596 to 2007-Sep-12.36356)." Diameter approximately 0.231 km. from mean, weighted H=20.8.
NEODyS14212013-2086563.55e-06-2.56-2.780NEODyS: "Based on 28 optical observations (of which 2 are rejected as outliers) from 2007/09/10.287 to 2007/09/12.364."
2007 RT12JPL20552015-2073251.2e-08-7.12-7.500JPL: "Analysis based on 15 observations spanning 1.0317 days (2007-Sep-12.38131 to 2007-Sep-13.41303)." Diameter approximately 0.058 km. from mean, weighted H=23.8.
2007 RT9JPL14212028-2105272.3e-08-5.13-5.860JPL: "Analysis based on 19 observations spanning 2.0284 days (2007-Sep-10.28434 to 2007-Sep-12.31272)." Diameter approximately 0.351 km. from mean, weighted H=19.9.
NEODyS14212022-2088473.35e-08-4.91-5.860NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2007/09/10.285 to 2007/09/12.313."
2007 RR9JPL1421R E M O V E DJPL: Risk listing removed at 1251 UTC.
NEODyS1421R E M O V E D
2007 RF2JPL1421R E M O V E DJPL: Risk listing removed at 0958 UTC.

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 13 September '07

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

2055Noted that JPL has posted 2007 RT12 as an impact risk - see above
Grabbed MPEC 2007-R71 - 2007 RP15 - see above
1731Grabbed MPEC 2007-R70 - 2007 RV12 - see above
1712Grabbed MPEC 2007-R64 - 2007 RP12 - see above
Grabbed MPEC 2007-R65 - 2007 RQ12 - see above
Grabbed MPEC 2007-R66 - 2007 RR12 - see above
Grabbed MPEC 2007-R67 - 2007 RS12 - see above
Grabbed MPEC 2007-R68 - 2007 RT12 - see above
Grabbed MPEC 2007-R69 - 2007 RU12 - see above
1711Added link to news story, "Meteorite Chunk Sale Could Go Sky High" - see above
Added link to news story, "Aurigid Shower Dazzles Airborne Observers" - see above
1631Grabbed MPEC 2007-R63 - 2004 DM44 - see above
1425Added MOS paper, "Albedos and diameters of three Mars Trojan asteroids" - see above
Added MOS paper, "Composition of the L5 Mars Trojans: Neighbors, not Siblings" - see above
Added MOS paper, "Discovery of Gas Accretion Onto Stars in 13 Myr old h and chi Persei" - see above
Added MOS paper, "Thermal Waves in Irradiated Protoplanetary Disks" - see above
1421Noted that JPL has removed 2007 RF2 as an impact risk - see above
Noted that JPL has removed 2007 RR9 as an impact risk - see above
Noted that NEODyS has removed 2007 RR9 as an impact risk - see above
Noted that JPL has posted 2007 RT9 as an impact risk - see above
Noted that NEODyS has updated its 2007 RT9 risk assessment - see above
Noted that JPL has updated its 2007 RU9 risk assessment - see above
Noted that NEODyS has updated its 2007 RU9 risk assessment - see above
Noted that JPL has posted 2007 RV9 as an impact risk - see above
Noted that NEODyS has updated its 2007 RV9 risk assessment - see above
Grabbed MPEC 2007-R62 - Daily Orbit Update - see above