12 Sep '07 Major News

25413 Itokawa from Hayabusa on 30 Sept. 2005. (c)Copyright JAXA.

On this day in 2005, the Japanese MUSES-C Hayabusa spacecraft arrived at what the ISAS mission called the "Gate Position," 20 km. from asteroid 25413 Itokawa. On September 30th UTC, the day this image was made, Hayabusa moved to the "Home Position" at about 7 km. distance from what was found to be a "rubble pile" object. ©Copyright: JAXA.

Contents on 12 September '07

Minor-Object News -- seven items
Minor-Object Science -- two papers
IAU Minor Planet Center
- NEOCP Activity -- 23 listings: 14 new, 9 updated
- New MPECs -- eight MPECs
- Observers -- 57 observing facilities
Impact Risk Monitoring -- five objects reported
Chronology

Resources:

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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 12 September '07

"Cosmic Neon Lights the Way," Spitzer Space Telescope 12 Sept. - Quote: "Very few chemical elements in the universe are found in their pure form. In the disks surrounding a young star, most elements either bond to form molecules, like water, or condense to a solid state, forming dust grains or ice. These reactions complicate the chemical 'picture' of planet formation around star. However, neon makes things simple. As one of chemistry's 'noble elements,' neon does not easily make chemical bonds or form larger molecules." {permalink}
- "UA Astronomers Will Trace Planet Formation With Neon," Univ. of Arizona 12 Sept. - Quote: "So although neon isn't an abundant gas, it is pure, and it radiates infrared light at a specific wavelength when it ionizes, making it useful for tracing planet formation... Neon showed up in disks of four sunlike stars in Spitzer's FEPS data. The discovery was a surprise because 'we didn't realize that solar analog stars could radiate enough high-energy (X-ray and ultraviolet) light to ionize neon,' [Ilaria] Pascucci said." {permalink}
"Greensburg meteorite finds temporary home at Hays museum," Hays Daily News 12 Sept. - Quote: "Pallasite meteorites, about 1 percent of meteorites, are a mixture of iron, nickel and silicates. But after the tornado, the [Brenham] meteorite's composition changed a bit to include pieces of broken glass, and, up until recently, a nail." {permalink}
"Dawn One Step Away From Asteroid Belt Trip," JPL 11 Sept. - Quote: "The Dawn spacecraft completed the 25-kilometer (15-mile) journey from Astrotech Space Operations in Titusville, Fla., to Pad-17B of the Cape Canaveral Air Force Station at 5:10 a.m. EDT today." {permalink}
- "Dawn asteroid probe back on the launch pad again," Spaceflight Now 11 Sept. - Quote: "A NASA spokesman reported that Dawn was bolted to the launcher at 8:01 a.m. EDT." {permalink}
"UK samples set for a taste of space," Science and Technology Facilities Council 11 Sept. - Quote: "Also onboard Biopan, all be it on the outside of the capsule, are samples of micro organisms that make up the ESA STONE artificial meteorite experiment. The organisms are dried onto the underside of several artificial meteorites made from sedimentary and igneous rocks which are attached to the outside of the heat shield -- exposing them fully to the space environment... [The] experiment will focus on whether by being on the underside of different materials effects the survival of organisms during atmospheric entry." {permalink}
- "Foton-M3 mission to launch European experiments," ESA 11 Sept. - Quote: "Later in the mission, students from all over Europe will wait with bated breath for the moment when their Young Engineers Experiment (YES2) is deployed from the Foton capsule. On 25 September, a small re-entry capsule will be released from the end of a 30 kilometre tether to demonstrate the possibility of returning small payloads to Earth at a fraction of the cost of current methods." {permalink}

Minor-Object Science on 12 September '07

"The Vertical Structure of Planet-induced Gaps in Proto-Planetary Discs" by Edgar, R.G. with A.C. Quillen, abstract & PDF at arXiv.org 12 Sept. - Quote: "We find that the planet excites spiral arms with significant ... vertical motion of the gas, and discuss the implications of these motions. In particular, the spiral arms will induce strong vertical stirring of the dust, making the edge appeared 'puffed up'... Infra-red observations (sensitive to dust) would be dominated by the light from the thick inner edge of the disc. Sub-millimetre observations (sensitive to gas velocities) would appear to be hot in 'turbulent' motions ... but cold in chemistry. Resolved sub-millimetre maps of circumstellar discs might even be able to detect the spiral arms directly." {permalink}
" Astrometry of Water Maser Sources in Nearby Molecular Clouds with VERA -- II. SVS 13 in NGC 1333" by Hirota, Tomoya with Takeshi Bushimata, Yoon Kyung Choi & 25 others, abstract & PDF at arXiv.org 12 Sept. - Quote: "We report on the results of multi-epoch VLBI observations with VERA (VLBI Exploration of Radio Astrometry) of the 22 GHz H2O masers associated with the young stellar object SVS 13 in the NGC 1333 region... The absolute positions and proper motions have been derived, revealing that the H2O masers ... are most likely associated with VLA4A, which is a radio counterpart of SVS 13. The origin of the observed proper motions of the maser features are currently difficult to attribute to either the jet or the rotating circumstellar disk associated with VLA4A." {permalink}

NEOCP Activity on 12 September '07

The MPC's NEO Confirmation Page has 23 listings: 14 new, 9 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had fourteen new and nine updated listings. Of these, fourteen were "one nighters." So far Major News has counted a total of 25 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 12 September '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been eight MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-R54 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2007-R55 time-stamped "13:16 UT" - Comet P/2007 R2 (Gibbs) - see below
MPEC 2007-R56 time-stamped "14:28 UT" - Comet C/2007 N3 (Lulin) - see below
MPEC 2007-R57 time-stamped "14:32 UT" - Comet C/2007 Q1 (Garradd) - see below
MPEC 2007-R58 time-stamped "14:37 UT" - Comet P/2007 Q2 (Gilmore) - see below
MPEC 2007-R59 time-stamped "14:41 UT" - Comet C/2007 Q3 (Siding Spring) - see below
MPEC 2007-R60 time-stamped "14:45 UT" - Comet P/2007 R1 (Larson) - see below
MPEC 2007-R61 time-stamped "14:55 UT" - Observations of Comets

MPEC 2007-R61 - "14:55 UT" - Observations of Comets

PK07N010 P/2007 N1 (McNaught) from Vitebsk Obs. (Sept. 6.00p2), Montcabre Obs. (Sept. 11.06-07p3), and the Catalina Sky Survey (CSS) (Sept. 11.40-49p12)
CK07M030 C/2007 M3 (LINEAR) from Geisei Obs. (July 15.57p1, 17.66p1, Aug. 9.53p1 & Sept. 3.45-47p2), La Murta Obs. (Sept. 6.83-84p3 & 7.84-85p3), Table Mtn. Obs. (Sept. 8.13-14p4), and Hiratsuka Obs. (Sept. 8.45-46p2)
CK07M010 C/2007 M1 (McNaught) from Kiev Comet Station (Aug. 22.91-93p3), Schiaparelli Obs. (Sept. 7.92p1), and Table Mtn. Obs. (Sept. 8.23-25p4)
PK07H010 P/2007 H1 (McNaught) from El Leoncito Obs. (Aug. 31.23-24p3), Linceo Obs. (Sept. 5.98-00p3), Schiaparelli Obs. (Sept. 6.11-14p2), Atlante Obs. (Sept. 6.92-93p3), Vitebsk Obs. (Sept. 6.97-98p6 & 8.92-94p5), Ageo Obs. (Sept. 7.71p2), Mataro Obs. (Sept. 9.95-96p3), Monte Deva Obs. (Sept. 9.98-00p5), Moriyama Obs. (Sept. 10.64-65p2), and Montcabre Obs. (Sept. 11.03-04p3)
CK07G010 C/2007 G1 (LINEAR) from Panker Obs. (Aug. 24.84-85p3), Lumezzane Obs. (Sept. 1.83p4), Geisei Obs. (Sept. 3.48-49p2), Moriyama Obs. (Sept. 4.50p2), Schiaparelli Obs. (Sept. 5.89p1, 7.82p1 & 7.87p1), Vitebsk Obs. (Sept. 6.79-80p4), La Murta Obs. (Sept. 6.81-82p3 & 7.81-82p3), Hiratsuka Obs. (Sept. 8.49p3), Carmelita Obs. (Sept. 9.80-81p3 & 10.83-84p3), Mataro Obs. (Sept. 9.84-85p3), Montcabre Obs. (Sept. 9.84-85p3), Monte Deva Obs. (Sept. 9.89-90p4 & 11.85-86p4), and Pic du Midi Obs. (Sept. 11.83-84p3)
CK06U060 C/2006 U6 (Spacewatch) from Ageo Obs. (Aug. 25.73-74p3 & Sept. 8.64-65p3) and Schiaparelli Obs. (Sept. 8.09p1 & 8.15p1)
CK06S050 C/2006 S5 (Hill) from Szamotuly-Galowo Obs. (Sept. 4.10-11p2) and Vitebsk Obs. (Sept. 9.02p3)
CK06O02F C/2006 OF2 (Broughton) from El Leoncito Obs. (Aug. 31.13-15p4 & Sept. 3.07-09p3), Montana Cabreja Obs. (Sept. 2.89p1 & 2.95p1), Vega del Thader Obs. (Sept. 3.90p8), CSS (Sept. 4.31-34p4 & 10.19-21p4), Hamamatsu-Yuto Obs. (Sept. 4.53p4), Linceo Obs. (Sept. 5.90-91p3 & 9.90-91p3), Montcabre Obs. (Sept. 5.91-92p3 & 9.86-87p3), Iluro Obs. (Sept. 5.96-97p3), Vitebsk Obs. (Sept. 6.81-82p4), La Murta Obs. (Sept. 6.85p3 & 7.85p3), Atlante Obs. (Sept. 6.99-03p5, 7.92-96p3 & 8.00-05p5), Remanzacco Obs. (Sept. 7.81p2), Chante-Perdrix Obs. (Sept. 7.82-83p4), CAST Obs. (Sept. 7.82p1), Schiaparelli Obs. (Sept. 8.92p1 & 9.00p1), Mataro Obs. (Sept. 9.87-91p3 & 10.83-84p3), Monte Deva Obs. (Sept. 9.96-98p5), Kambah Obs. (Sept. 10.49p2), and Moriyama Obs. (Sept. 10.63p2)
CK06M040 C/2006 M4 (SWAN) from the Siding Spring Survey (SSS) (Aug. 11.48-52p4) and Schiaparelli Obs. (Sept. 7.93p1)
CK06K040 C/2006 K4 (NEAT) from El Leoncito Obs. (Aug. 30.97-01p5 & Sept. 2.99-00p3) and Los Molinos Obs. (Sept. 2.18-20p4)
CK06K030 C/2006 K3 (McNaught) from Szamotuly-Galowo Obs. (Sept. 4.11p2) and Vitebsk Obs. (Sept. 10.00-01p2)
CK05S040 C/2005 S4 (McNaught) from Panker Obs. (Aug. 24.92p1), Kiev Comet Station (Aug. 24.92-93p2), Vega del Thader Obs. (Sept. 3.88p5), and New Millennium Obs. (Sept. 7.89p1 & 9.83p1)
CK05L030 C/2005 L3 (McNaught) from Masia Cal Maciarol Modul 1 (MCM1) (Aug. 10.94-95p3), Kiev Comet Station (Aug. 24.79-80p3), Panker Obs. (Aug. 24.86-88p3), Montana Cabreja Obs. (Sept. 2.90p1 & 2.95p1), Moriyama Obs. (Sept. 4.51-52p2), La Murta Obs. (Sept. 6.83p3 & 7.83p3), CAST Obs. (Sept. 7.80p1), Hiratsuka Obs. (Sept. 8.48p3), Ageo Obs. (Sept. 9.42p2), Mataro Obs. (Sept. 9.82-83p2 & 10.81-82p3), and Carmelita Obs. (Sept. 9.83-84p3)
CK05EH3L C/2005 EL173 (LONEOS) from Australian Natl. Univ. 1m telescope (Aug. 31.74-76p6) and Ageo Obs. (Sept. 7.77p2)
0189P 189P/NEAT from Lumezzane Obs. (Sept. 1.85-86p3) and Schiaparelli Obs. (Sept. 5.87p2)
0188P 188P/LINEAR-Mueller from LONEOS (Sept. 5.44-49p4 & 8.42-49p4), LINEAR (Sept. 6.25-28p3), New Millennium Obs. (Sept. 8.06-11p6), Atlante Obs. (Sept. 8.07-10p3 & 9.06-07p3), the Mt. Lemmon Survey (MLS) (Sept. 10.38-40p4), Moriyama Obs. (Sept. 10.67p2), Mataro Obs. (Sept. 10.92p2), and the Spacewatch 0.9m telescope (Sept. 11.29-32p3)
0167P 167P/CINEOS from the SZTE Asteroid Program (SZTE) (July 21.99-00p2) and Schiaparelli Obs. (Sept. 8.06p1, 8.94p1 & 9.05p1)
0139P 139P/Vaisala-Oterma from Chante-Perdrix Obs. (Sept. 8.95-02p4 & 9.08p1), Schiaparelli Obs. (Sept. 9.09p1 & 9.16p1), and Kambah Obs. (Sept. 9.67-68p2)
0136P 136P/Mueller 3 from CSS (Sept. 5.34-37p4 & 12.23-25p4), LONEOS (Sept. 9.32-38p4), and Ageo Obs. (Sept. 9.64-65p3)
0125P 125P/Spacewatch from Schiaparelli Obs. (Sept. 2.80-82p2), La Murta Obs. (Sept. 6.82-83p3 & 7.82p3), and Ageo Obs. (Sept. 8.43p3)
0117P 117P/Helin-Roman-Alu 1 from SSS (July 10.78p1), Buchloe Obs. (Aug. 12.99p3), New Millennium Obs. (Sept. 8.10-15p5), and Ageo Obs. (Sept. 8.71-72p2)
0113P 113P/Spitaler from ANU 1m (Sept. 5.73p3 & 6.69-71p4), Schiaparelli Obs. (Sept. 8.03p1, 8.10p1, 9.08p1 & 9.15p1), and LONEOS (Sept. 8.41-47p4)
0110P 110P/Hartley 3 from Ageo Obs. (Aug. 10.75p2) and Vitebsk Obs. (Sept. 8.95-96p2)
0093P 93P/Lovas 1 from CSS (Sept. 3.46-47p4), Iluro Obs. (Sept. 6.01-02p3), Linceo Obs. (Sept. 6.04-07p3), Vitebsk Obs. (Sept. 6.88-89p3 & 10.93-94p5), Atlante Obs. (Sept. 6.91-93p2, 7.01p1, 8.07-10p3 & 9.08-11p4), Montcabre Obs. (Sept. 7.94-95p3), Gualba Obs. (Sept. 8.96p3), Ca del Monte Obs. (Sept. 9.10-12p2), Mataro Obs. (Sept. 9.98-99p3), Monte Deva Obs. (Sept. 10.00-02p5), Moriyama Obs. (Sept. 10.68p2), and Pic du Midi Obs. (Sept. 11.09-10p3)
0050P 50P/Arend from Panker Obs. (Aug. 24.99p1), Iluro Obs. (Sept. 6.07-08p2), Vitebsk Obs. (Sept. 7.02-03p5), Atlante Obs. (Sept. 7.04-05p3 & 9.09-10p3), Ageo Obs. (Sept. 8.67-69p3), Gualba Obs. (Sept. 8.96-97p2), Mataro Obs. (Sept. 9.97-98p2), Monte Deva Obs. (Sept. 10.03-04p5), and Moriyama Obs. (Sept. 10.70-71p2)
0046P 46P/Wirtanen from Ageo Obs. (Sept. 3.65p2), Atlante Obs. (Sept. 6.96-97p3), and North Ryde Obs. (Sept. 9.51p1 & 9.56p1)
0029P 29P/Schwassmann-Wachmann 1 from Gualba Obs. (Sept. 5.19p2 & 6.18p2) and Vitebsk Obs. (Sept. 11.06p1)
0017P 17P/Holmes from Panker Obs. (Aug. 24.97-98p4), Vitebsk Obs. (Sept. 7.04-05p5 & 10.97-98p5), and Atlante Obs. (Sept. 8.08-11p3)
0016P 16P/Brooks 2 from ANU 1m (Aug. 31.42-43p3 & Sept. 5.40-41p3)
0008P 8P/Tuttle from Vitebsk Obs. (Sept. 6.85-86p3), Ageo Obs. (Sept. 7.73p2), and Chante-Perdrix Obs. (Sept. 8.83-85p4)

MPEC 2007-R60 - "14:45 UT" - Comet P/2007 R1 (Larson)

PK07R010 P/2007 R1 (Larson) (q=4.377 AU, Q=7.287 AU, TP=2008 July 2.457 TT) from LONEOS (Sept. 5.44-49p4), Montcabre Obs. (Sept. 9.97-98p3), Kambah Obs. (Sept. 10.59-60p2), and Vitebsk Obs. (Sept. 10.91p1)

MPEC 2007-R59 - "14:41 UT" - Comet C/2007 Q3 (Siding Spring)

CK07Q030 C/2007 Q3 (Siding Spring) (i=65.7°, q=2.254 AU, TP=2009 Oct. 8.002 TT) from ANU 1m (Sept. 5.78-79p4) and Kambah Obs. (Sept. 9.65-66p2)

MPEC 2007-R58 - "14:37 UT" - Comet P/2007 Q2 (Gilmore)

PK07Q020 P/2007 Q2 (Gilmore) (q=1.841 AU, Q=9.400 AU, TP=2007 Aug. 23.843 TT) from Montcabre Obs. (Sept. 5.87-89p3), LINEAR (Sept. 7.23-28p5), Atlante Obs. (Sept. 7.00-04p3), Frasso Sabino Obs. (Sept. 8.96p1), Kambah Obs. (Sept. 9.57-58p2), and Vitebsk Obs. (Sept. 10.87p1)

MPEC 2007-R57 - "14:32 UT" - Comet C/2007 Q1 (Garradd)

CK07Q010 C/2007 Q1 (Garradd) (i=81.6°, q=2.953 AU, TP=2006 Dec. 10.134 TT) from Montcabre Obs. (Sept. 1.09-13p3), ANU 1m (Sept. 5.77-78p3), and Kambah Obs. (Sept. 9.60-61p2)

MPEC 2007-R56 - "14:28 UT" - Comet C/2007 N3 (Lulin)

CK07N030 C/2007 N3 (Lulin) (i=178.4°, q=1.212 AU, TP=2009 Jan. 10.7452 TT) from LONEOS (Aug. 21.31-37p4 & 22.29-34p3), CSS (Sept. 3.22-24p4), Vega del Thader Obs. (Sept. 3.93p5), Kiev Comet Station (Sept. 5.89-90p3), Ageo Obs. (Sept. 7.69p1 & 8.58p3), Remanzacco Obs. (Sept. 7.83-84p2), Atlante Obs. (Sept. 7.93-97p3 & 9.03-04p3), Schiaparelli Obs. (Sept. 8.92p1 & 9.02p1), and Kambah Obs. (Sept. 9.62-63p2)

MPEC 2007-R55 - "13:16 UT" - Comet P/2007 R2 (Gibbs)

PK07R020 P/2007 R2 (Q=5.128 AU, TP=2007 Aug. 26.359 TT) from CSS (Sept. 10.41-44p4 & 10.49-51p5), Great Shefford Obs. (Sept. 11.17-18p4 & 12.12-15p5), Table Mtn. Obs. (Sept. 11.36-39p4 & 12.48-50p4), Grasslands Obs. (Sept. 11.44-45p3), Faulkes Telescope North (Sept. 11.54-56p3), Naef Obs. (Sept. 11.00-02p2), Eschenberg Obs. (Sept. 12.03-04p5), Farpoint Obs. (Sept. 12.38-40p3), and MLS (Sept. 12.47-49p4)

<< DOU on 12 Sept. '07 >> MPEC 2007-R54 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K07R09U 2007 RU9 (arc=1 day, H=20.8 ~234m) from Junk Bond Obs. (Sept. 11.27-31p3)
K07R09R 2007 RR9 (Q=4.805 AU, arc=1 day, H=20.3 ~295m) from Junk Bond Obs. (Sept. 11.25-30p3)
K07R02F 2007 RF2 (arc=6 days, H=20.5 ~269m) from the Spacewatch 1.8m telescope (Sept. 11.37-38p3)
Observations of recently (no longer) risk-listed objects
K07P08A 2007 PA8 (Q=4.694 AU, arc=34 days, H=15.8 ~2.34 km, q=0.957 AU) from program code {|} via La Silla (Aug. 13.30-32p4) and Eschenberg Obs. (Sept. 11.88p2)
Observations of small asteroids (H>22.0)
K07R08Z 2007 RZ8 (arc=2 days, H=24.1 ~51m) from Spacewatch 1.8m (Sept. 11.40-42p3)
Observations of other objects
K07Q03E 2007 QE3 (Q=4.057 AU, arc=18 days, H=20.0 ~339m) from New Millennium Obs. (Sept. 8.09-14p3)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Naef Obs. (Sept. 11.92-94p2) and Peschiera del Garda Obs. (Sept. 11.96-98p3)
K07P08E 2007 PE8 (arc=120 days, H=19.4 ~446m) from Peschiera del Garda Obs. (Sept. 8.92-95p4) and CSS (Sept. 11.22-24p4)
K07O00V 2007 OV (arc=57 days, H=19.1 ~513m) from MLS (Sept. 11.35-38p4)
K07M06L 2007 ML6 (arc=82 days, H=18.6 ~645m) from the FTP education program via Faulkes Telescope North (Sept. 11.56p2)
K07L32R 2007 LR32 (arc=109 days, H=17.2 ~1.23 km) from Peschiera del Garda Obs. (Sept. 8.96-99p4 & 11.88-92p3) and Eschenberg Obs. (Sept. 11.78-79p7)
K07H15E 2007 HE15 (arc=142 days, H=19.6 ~407m) from Eschenberg Obs. (Sept. 11.90p3)
K07G03S 2007 GS3 (arc=153 days, H=19.3 ~467m) from FTP educ. prog. (Sept. 11.55p1)
K04S26D 2004 SD26 (arc=2 opp, H=18.7 ~616m) from Greiner Research Obs. (Sept. 11.30-31p3) and CSS (Sept. 11.39-42p4)
K03W07M 2003 WM7 (q=0.304 AU, Q=4.668 AU, arc=3 opp, H=17.4 ~1.12 km) from Spacewatch 1.8m (Sept. 11.43-46p3 at V=22.3-9)
K03R07X 2003 RX7 (arc=3 opp, H=18.4 ~708m) from Eschenberg Obs. (Sept. 11.85-86p7)
K03B47T 2003 BT47 (arc=3 opp, H=17.5 ~1.07 km) from Spacewatch 0.9m (Sept. 11.42-45p2)
K02RC9T 2002 RT129 (arc=2 opp, H=19.5 ~426m) from MLS (Sept. 11.41-44p4)
K02N04N 2002 NN4 (arc=4 opp, H=20.0 ~339m) from New Millennium Obs. (Sept. 8.83p1)
K01W01R 2001 WR1 (arc=4 opp, H=17.8 ~933m) from MLS (Sept. 11.47-48p4)
K01SH0E 2001 SE170 (arc=3 opp, H=18.2 ~776m) from MLS (Sept. 11.17-18p4)
K01R47Y 2001 RY47 (arc=3 opp, H=19.4 ~446m) from Hibiscus Obs. (Sept. 10.56-58p2)
K00SG2Y 2000 SY162 (arc=2 opp, H=19.2 ~490m) from NEAT's USAF Haleakala telescope (2001 Jan. 19.32-34p3)
K00R37W 2000 RW37 (arc=3 opp, H=20.0 ~339m) from Eschenberg Obs. (Sept. 11.91p3)
J99F00A 1999 FA (arc=2 opp, H=20.6 ~257m) from CSS (Sept. 11.40-42p4)
J98S15D 1998 SD15 (arc=4 opp, H=18.9 ~562m) from Greiner Research Obs. (Sept. 12.13-14p4)
J97G28H 1997 GH28 (arc=5 opp, H=18.1 ~812m) from Spacewatch 0.9m (Sept. 11.22-26p3)
J96F03O 1996 FO3 (arc=3 opp, H=20.5 ~269m) from Spacewatch 0.9m (Sept. 9.46-49p3)
F4330 154330 2002 VX94 from Spacewatch 0.9m (Sept. 10.25p1)
F4269 154269 2002 SM from SSS (Sept. 11.57-59p4)
D9047 139047 2001 EB16 from MLS (Sept. 11.22-24p4)
16636 16636 1993 QP from New Millennium Obs. (Sept. 8.84-91p6)
06047 6047 1991 TB1 from MLS (Sept. 11.47-48p4)
04954 4954 Eric (1990 SQ) from SSS (Sept. 11.58-59p2)
03753 3753 Cruithne (1986 TO) from Atlante Obs. (Sept. 9.17-25p4)
02212 2212 Hephaistos (1978 SB) from Naef Obs. (Sept. 11.00-01p2)

Observers on 12 September '07

A total of 57 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 12 in MPECs 2007-R56 & 2007-R61 -- 2007 N3, 2007 H1, 2006 U6, 2005 L3, 2005 EL173, 136P, 125P, 117P, 110P, 50P, 46P, 8P
`J51`	Atlante Obs. in the Canary Islands, 10 in MPECs 2007-R54, 2007-R56, 2007-R58 & 2007-R61 -- 2007 Q2, 2007 N3, 2007 H1, 2006 OF2, 3753, 188P, 93P, 50P, 46P, 17P
`413`	Australian Natl. Univ. 1m telescope in New South Wales, 5 in MPECs 2007-R57, 2007-R59 & 2007-R61 -- 2007 Q3, 2007 Q1, 2005 EL173, 113P, 16P
`215`	Buchloe Obs. in Germany, 1 in MPEC 2007-R61 -- 117P
`235`	CAST Obs. in Italy, 2 in MPEC 2007-R61 -- 2006 OF2, 2005 L3
`B14`	Ca del Monte Obs. in Italy, 1 in MPEC 2007-R61 -- 93P
`B20`	Carmelita Obs. in Spain, 2 in MPEC 2007-R61 -- 2007 G1, 2005 L3
`703`	Catalina Sky Survey in Arizona, 9 in MPECs 2007-R54, 2007-R55, 2007-R56 & 2007-R61 -- 2007 R2, 2007 PE8, 2007 N3, 2007 N1, 2006 OF2, 2004 SD26, 1999 FA, 136P, 93P
`A77`	Chante-Perdrix Obs. in France, 3 in MPEC 2007-R61 -- 2006 OF2, 139P, 8P
`808`	El Leoncito Obs. in Argentina, 3 in MPEC 2007-R61 -- 2007 H1, 2006 OF2, 2006 K4
`151`	Eschenberg Obs. in Switzerland, 6 in MPECs 2007-R54 & 2007-R55 -- 2007 R2, 2007 PA8, 2007 LR32, 2007 HE15, 2003 RX7, 2000 RW37
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2007-R55 -- 2007 R2
`F65`	Faulkes Telescope North in Hawaii, 1 in MPEC 2007-R55 -- 2007 R2
`F653`	FTP education program via Faulkes Telescope North in Hawaii, 2 in MPEC 2007-R54 -- 2007 ML6, 2007 GS3
`157`	Frasso Sabino Obs. in Italy, 1 in MPEC 2007-R58 -- 2007 Q2
`372`	Geisei Obs. in Japan, 2 in MPEC 2007-R61 -- 2007 M3, 2007 G1
`651`	Grasslands Obs. in Arizona, 1 in MPEC 2007-R55 -- 2007 R2
`J95`	Great Shefford Obs. in England, 1 in MPEC 2007-R55 -- 2007 R2
`H51`	Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-R54 -- 2004 SD26, 1998 SD15
`442`	Gualba Obs. in Spain, 3 in MPEC 2007-R61 -- 93P, 50P, 29P
`379`	Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2007-R61 -- 2006 OF2
`F84`	Hibiscus Obs. in Tahiti, 1 in MPEC 2007-R54 -- 2001 RY47
`D88`	Hiratsuka Obs., 3 in MPEC 2007-R61 -- 2007 M3, 2007 G1, 2005 L3
`B19`	Iluro Obs. in Spain, 3 in MPEC 2007-R61 -- 2006 OF2, 93P, 50P
`701`	Junk Bond Obs. in Arizona, 2 in MPEC 2007-R54 -- 2007 RU9, 2007 RR9
`415`	Kambah Obs. in Australia, 7 in MPECs 2007-R56, 2007-R57, 2007-R58, 2007-R59, 2007-R60 & 2007-R61 -- 2007 R1, 2007 Q3, 2007 Q2, 2007 Q1, 2007 N3, 2006 OF2, 139P
`585`	Kiev Comet Station in the Ukraine, 4 in MPECs 2007-R56 & 2007-R61 -- 2007 N3, 2007 M1, 2005 S4, 2005 L3
`704`	LINEAR in New Mexico, 2 in MPECs 2007-R58 & 2007-R61 -- 2007 Q2, 188P
`699`	LONEOS in Arizona, 5 in MPECs 2007-R56, 2007-R60 & 2007-R61 -- 2007 R1, 2007 N3, 188P, 136P, 113P
`J76`	La Murta Obs. in Spain, 5 in MPEC 2007-R61 -- 2007 M3, 2007 G1, 2006 OF2, 2005 L3, 125P
`809\|`	program code {\|} via La Silla in Chile, 1 in MPEC 2007-R54 -- 2007 PA8
`J59`	Linceo Obs. in Spain, 3 in MPEC 2007-R61 -- 2007 H1, 2006 OF2, 93P
`844`	Los Molinos Obs. in Uruguay, 1 in MPEC 2007-R61 -- 2006 K4
`130`	Lumezzane Obs. in Italy, 2 in MPEC 2007-R61 -- 2007 G1, 189P
`A01`	Masia Cal Maciarol Modul 1, 1 in MPEC 2007-R61 -- 2005 L3
`A06`	Mataro Obs. in Spain, 7 in MPEC 2007-R61 -- 2007 H1, 2007 G1, 2006 OF2, 2005 L3, 188P, 93P, 50P
`J45`	Montana Cabreja Obs. in the Canary Islands, 2 in MPEC 2007-R61 -- 2006 OF2, 2005 L3
`213`	Montcabre Obs. in Spain, 8 in MPECs 2007-R57, 2007-R58, 2007-R60 & 2007-R61 -- 2007 R1, 2007 Q2, 2007 Q1, 2007 N1, 2007 H1, 2007 G1, 2006 OF2, 93P
`945`	Monte Deva Obs. in Spain, 5 in MPEC 2007-R61 -- 2007 H1, 2007 G1, 2006 OF2, 93P, 50P
`900`	Moriyama Obs. in Japan, 7 in MPEC 2007-R61 -- 2007 H1, 2007 G1, 2006 OF2, 2005 L3, 188P, 93P, 50P
`G96`	Mt. Lemmon Survey in Arizona, 8 in MPECs 2007-R54, 2007-R55 & 2007-R61 -- 2007 R2, 2007 OV, 2002 RT129, 2001 WR1, 2001 SE170, 139047, 6047, 188P
`608`	NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2007-R54 -- 2000 SY162
`A13`	Naef Obs. in Switzerland, 3 in MPECs 2007-R54 & 2007-R55 -- 2007 R2, 2007 PU11, 2212
`A24`	New Millennium Obs. in Italy, 6 in MPECs 2007-R54 & 2007-R61 -- 2007 QE3, 2005 S4, 2002 NN4, 16636, 188P, 117P
`423`	North Ryde Obs. in New South Wales, 1 in MPEC 2007-R61 -- 46P
`A32`	Panker Obs. in Germany, 5 in MPEC 2007-R61 -- 2007 G1, 2005 S4, 2005 L3, 50P, 17P
`A53`	Peschiera del Garda Obs. in Italy, 3 in MPEC 2007-R54 -- 2007 PU11, 2007 PE8, 2007 LR32
`586`	Pic du Midi Obs. in France, 2 in MPEC 2007-R61 -- 2007 G1, 93P
`473`	Remanzacco Obs. in Italy, 2 in MPECs 2007-R56 & 2007-R61 -- 2007 N3, 2006 OF2
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2007-R61 -- 167P
`204`	Schiaparelli Obs. in Italy, 12 in MPECs 2007-R56 & 2007-R61 -- 2007 N3, 2007 M1, 2007 H1, 2007 G1, 2006 U6, 2006 OF2, 2006 M4, 189P, 167P, 139P, 125P, 113P
`E12`	Siding Spring Survey in New South Wales, 4 in MPECs 2007-R54 & 2007-R61 -- 2006 M4, 154269, 4954, 117P
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2007-R54 & 2007-R61 -- 2003 BT47, 1997 GH28, 1996 FO3, 154330, 188P
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2007-R54 -- 2007 RZ8, 2007 RF2, 2003 WM7
`B30`	Szamotuly-Galowo Obs. in Poland, 2 in MPEC 2007-R61 -- 2006 S5, 2006 K3
`673`	Table Mtn. Obs. in southern California, 3 in MPECs 2007-R55 & 2007-R61 -- 2007 R2, 2007 M3, 2007 M1
`J70`	Vega del Thader Obs. in Spain, 3 in MPECs 2007-R56 & 2007-R61 -- 2007 N3, 2006 OF2, 2005 S4
`B42`	Vitebsk Obs. in Belarus, 14 in MPECs 2007-R58, 2007-R60 & 2007-R61 -- 2007 R1, 2007 Q2, 2007 N1, 2007 H1, 2007 G1, 2006 S5, 2006 OF2, 2006 K3, 110P, 93P, 50P, 29P, 17P, 8P

Impact Risk Monitoring on 12 September '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 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 RV9	NEODyS	1324	2008-2088	80	1.99e-08	-3.36	-3.37	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2007/09/10.289 to 2007/09/11.277."

2007 RU9	NEODyS	1324	2013-2086	87	1.15e-06	-3.14	-3.49	0	NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2007/09/10.287 to 2007/09/11.407."
2007 RU9	JPL	1323	2010-2107	357	3.9e-06	-2.60	-3.32	0	JPL: "Analysis based on 23 observations spanning 1.1205 days (2007-Sep-10.28596 to 2007-Sep-11.40646)." Diameter approximately 0.244 km. from mean, weighted H=20.7.

2007 RT9	NEODyS	1438	2016-2083	23	5.42e-09	-5.32	-5.51	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/09/10.285 to 2007/09/11.318."

2007 RR9	NEODyS	1324	2046-2089	4	3.4e-09	-6.36	-6.45	0	NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2007/09/10.213 to 2007/09/11.436."
2007 RR9	JPL	1323	2046-2107	11	1.3e-07	-4.69	-5.10	0	JPL: "Analysis based on 36 observations spanning 1.2227 days (2007-Sep-10.21237 to 2007-Sep-11.43502)." Diameter approximately 0.300 km. from mean, weighted H=20.3.

2007 RF2	JPL	1323	2103	1	1.5e-09	-6.74	-6.74	0	JPL: "Analysis based on 35 observations spanning 5.9704 days (2007-Sep-05.41331 to 2007-Sep-11.38371)." Diameter approximately 0.260 km. from mean, weighted H=20.5.

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 12 September '07

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

2057	Added link to news story, "UA Astronomers Will Trace Planet Formation With Neon" - see above Added link to news story, "Greensburg meteorite finds temporary home at Hays museum" - see above Added link to news story, "Cosmic Neon Lights the Way" - see above
1555	Grabbed MPEC 2007-R58 - Comet P/2007 Q2 (Gilmore) - see above Grabbed MPEC 2007-R59 - Comet C/2007 Q3 (Siding Spring) - see above Grabbed MPEC 2007-R60 - Comet P/2007 R1 (Larson) - see above Grabbed MPEC 2007-R61 - Observations of Comets - see above
1437	Noted that NEODyS has posted 2007 RT9 as an impact risk - see above Grabbed MPEC 2007-R56 - Comet C/2007 N3 (Lulin) - see above Grabbed MPEC 2007-R57 - Comet C/2007 Q1 (Garradd) - see above
1409	Grabbed MPEC 2007-R55 - Comet P/2007 R2 (Gibbs) - see above
1330	Added MOS paper, " Astrometry of Water Maser Sources in Nearby Molecular Clouds with VERA -- II. SVS 13 in NGC 1333" - see above Added MOS paper, "The Vertical Structure of Planet-induced Gaps in Proto-Planetary Discs" - see above Added link to news story, "Foton-M3 mission to launch European experiments" - see above Added link to news story, "Dawn One Step Away From Asteroid Belt Trip" - see above Added link to news story, "UK samples set for a taste of space" - see above Added link to news story, "Dawn asteroid probe back on the launch pad again" - see above
1324	Grabbed MPEC 2007-R54 - Daily Orbit Update - see above
1323	Noted that JPL has posted 2007 RF2 as an impact risk - see above Noted that JPL has updated its 2007 RR9 risk assessment - see above Noted that NEODyS has posted 2007 RR9 as an impact risk - see above Noted that JPL has updated its 2007 RU9 risk assessment - see above Noted that NEODyS has posted 2007 RU9 as an impact risk - see above Noted that NEODyS has posted 2007 RV9 as an impact risk - see above

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