4 Sep '07 Major News

Contents on 4 September '07

Minor-Object News
Minor-Object Science -- none yet today
IAU Minor Planet Center
- NEOCP Activity -- three listings: 2 new, 1 updated
- New MPECs -- twelve MPECs
- Observers -- 53 observing facilities
Impact Risk Monitoring -- three objects reported
Chronology

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 4 September '07

There is no news to report yet today (none found or none prepared).

Minor-Object Science on 4 September '07

No science papers are known or prepared yet today.

NEOCP Activity on 4 September '07

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and one updated listings. Of these, two were "one nighters." So far Major News has counted a total of eleven 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 4 September '07

Minor Planet Electronic Circulars

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

MPEC 2007-R07 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2007-R08 time-stamped "12:40 UT" - 2007 RD1 - see below
MPEC 2007-R09 time-stamped "12:44 UT" - 2007 RE1 - see below
MPEC 2007-R10 time-stamped "12:46 UT" - 2007 RF1 - see below
MPEC 2007-R11 time-stamped "12:50 UT" - 2007 RG1 - see below
MPEC 2007-R12 time-stamped "12:53 UT" - 2007 RH1 - see below
MPEC 2007-R13 time-stamped "12:56 UT" - 2007 RJ1 - see below
MPEC 2007-R14 time-stamped "16:10 UT" - Comet C/2007 N3 (Lulin) - see below
MPEC 2007-R15 time-stamped "16:15 UT" - Comet P/2007 Q2 (Gilmore) - see below
MPEC 2007-R16 time-stamped "16:20 UT" - Comet C/2007 Q3 (Siding Spring) - see below
MPEC 2007-R17 time-stamped "16:37 UT" - Observations of Comets - see below
MPEC 2007-R18 time-stamped "23:07 UT" - 2007 RO1

MPEC 2007-R18 - "23:07 UT" - 2007 RO1

K07R01O 2007 RO1 (small asteroid, Earth MOID=6.3 LD, H=23.8 ~59m) was discovered at 0528 UT 04 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 4.23-25p4 and 4.30p4. The discovery was confirmed by Remanzacco Obs. (Sept. 4.87-88p3), Guidestar Obs. (Sept. 4.87-89p3), Great Shefford Obs. (Sept. 4.89p3), and Farra d'Isonzo Obs. (Sept. 4.92-95p3).

MPEC 2007-R17 - "16:37 UT" - Observations of Comets

CK07O010 C/2007 O1 (LINEAR) from Vega del Thader Obs. (Aug. 15.90-91p9) and Chante-Perdrix Obs. (Aug. 31.81-82p4)
CK07M030 C/2007 M3 (LINEAR) from Vega del Thader Obs. (Aug. 15.88-89p6 & 29.85-86p7), Kiev Comet Station (Aug. 22.82-84p5), Remanzacco Obs. (Aug. 23.82p1), Hradec Kralove Obs. (Aug. 25.83-84p5), La Murta Obs. (Aug. 27.86p3), Schiaparelli Obs. (Aug. 27.91-94p2), Rodeno Obs. (Aug. 31.87-88p3), and Masquefa Obs. (Sept. 1.86-89p3)
PK07H010 P/2007 H1 (McNaught) from Vega del Thader Obs. (Aug. 24.01-02p3), Ageo Obs. (Aug. 25.60p3), Montcabre Obs. (Aug. 27.02-03p3 & Sept. 1.00-02p3), and Monte Deva Obs. (Aug. 31.99-00p5 & Sept. 3.93-95p5)
CK07G010 C/2007 G1 (LINEAR) from Panker Obs. (Aug. 17.02-03p3 & 23.98-99p3), Ageo Obs. (Aug. 25.53-54p2), Hradec Kralove Obs. (Aug. 25.81-82p6), Montana Blanca Obs. (Aug. 25.98p1), Carmelita Obs. (Aug. 26.82p3 & 31.82-83p3), Vega del Thader Obs. (Aug. 26.87-88p3), La Murta Obs. (Aug. 27.84-85p3), Montcabre Obs. (Aug. 27.85p3), Nazaret Obs. (Aug. 27.86-89p3 & Sept. 2.85-86p5), Corbera Obs. (Aug. 31.90p5 & Sept. 1.92-93p5), Rodeno Obs. (Aug. 31.91-92p3), Gualba Obs. (Sept. 1.84-85p4), and CSS (Sept. 4.15-17p3)
CK07E020 C/2007 E2 (Lovejoy) from Panker Obs. (Aug. 16.99-00p3 & 23.87-88p2)
CK06W030 C/2006 W3 (Christensen) from Suno Obs. (Aug. 26.13-14p5) and Great Shefford Obs. (Aug. 30.11-12p3)
CK06V13Z C/2006 VZ13 (LINEAR) from the SZTE Asteroid Program (SZTE) (July 19.87-89p11) and Geisei Obs. (Aug. 14.47p4)
CK06O02F C/2006 OF2 (Broughton) from Vega del Thader Obs. (Aug. 23.92-93p21 & 29.88p8), Hradec Kralove Obs. (Aug. 25.85p5), Carmelita Obs. (Aug. 29.87-88p3), Rodeno Obs. (Aug. 30.03-05p3, 30.88-90p3 & 31.96-97p3), Chante-Perdrix Obs. (Aug. 30.90-91p3), Ageo Obs. (Aug. 31.59-60p3), Linceo Obs. (Aug. 31.93-94p3), Montana Blanca Obs. (Aug. 31.93p1), Corbera Obs. (Aug. 31.95-96p5 & Sept. 1.96-97p5), Monte Deva Obs. (Aug. 31.97-99p5 & Sept. 3.91-92p5), Masquefa Obs. (Aug. 31.97-99p3), Montcabre Obs. (Aug. 31.97-99p3 & Sept. 1.87-88p3), Remanzacco Obs. (Aug. 31.98-00p3), Gualba Obs. (Sept. 1.89-90p4), Nazaret Obs. (Sept. 2.90-91p4), Hamamatsu-Yuto Obs. (Sept. 3.62-63p3), and Calarreona Obs. (Sept. 3.90p3)
CK06K010 C/2006 K1 (McNaught) from Australian Natl. Univ. 1m telescope (Aug. 30.73-75p3 & 31.72-74p3)
CK05S040 C/2005 S4 (McNaught) from Schiaparelli Obs. (Aug. 25.96-00p2), Vega del Thader Obs. (Aug. 26.84p3), and New Millennium Obs. (Sept. 2.89-96p5)
CK05L030 C/2005 L3 (McNaught) from Remanzacco Obs. (Aug. 15.82p1), Vega del Thader Obs. (Aug. 15.86-87p12 & 29.84-85p8), Ageo Obs. (Aug. 25.49p2), Hradec Kralove Obs. (Aug. 25.80p5), Montana Blanca Obs. (Aug. 25.95p1), Carmelita Obs. (Aug. 26.84p3 & 31.87-88p3), Montcabre Obs. (Aug. 26.91p3), La Murta Obs. (Aug. 27.85p3), Schiaparelli Obs. (Aug. 27.88-92p3), Guadarrama Obs. (Aug. 31.86p2), Rodeno Obs. (Aug. 31.89-90p3), Corbera Obs. (Aug. 31.91p3), Vicksburg Obs. (Sept. 1.08-10p2), Masquefa Obs. (Sept. 1.81-83p2 & 1.91p1), Gualba Obs. (Sept. 1.85p3), Calarreona Obs. (Sept. 3.87p3), and Monte Deva Obs. (Sept. 3.88-90p5)
PK00P030 P/2000 P3 from LINEAR (2000 Aug. 26.27-33p3, 2002 Jan. 21.24p1 & 2002 Jan. 21.28-30p2) and NEAT's USAF Haleakala telescope (2000 Sept. 3.34-35p2 & 2000 Dec. 19.25-27p3)
0189P 189P/NEAT from Panker Obs. (Aug. 16.89-91p3 & 23.94-96p3), Montcabre Obs. (Aug. 27.88-89p2 & Sept. 1.82-83p3), Masia Cal Maciarol Modul 8 (MCM8) (Aug. 29.95-01p3), Gualba Obs. (Sept. 1.83p4), and Nazaret Obs. (Sept. 1.92-95p2)
0188P 188P/LINEAR-Mueller from Ageo Obs. (Aug. 19.76-77p2 & 25.70-71p2), Montcabre Obs. (Aug. 26.00p3), and Nazaret Obs. (Aug. 27.04-05p3)
0093P 93P/Lovas 1 from Kiev Comet Station (Aug. 23.90-92p5), Montcabre Obs. (Aug. 26.94-95p2), and Nazaret Obs. (Aug. 26.98-99p3 & Sept. 2.92-93p3)
0050P 50P/Arend from Geisei Obs. (Aug. 21.74p1) and Nazaret Obs. (Aug. 26.09-12p2)
0047P 47P/Ashbrook-Jackson from the Siding Spring Survey (SSS) (June 15.62-64p3) and ANU 1m (Aug. 31.39-41p4)
0029P 29P/Schwassmann-Wachmann 1 from Gualba Obs. (Aug. 28.16p2), Masquefa Obs. (Sept. 1.15-17p3), and Farpoint Obs. (Sept. 1.42-44p4)
0017P 17P/Holmes from Kiev Comet Station (Aug. 25.06-08p5), Ageo Obs. (Aug. 26.69-70p3), Remanzacco Obs. (Sept. 1.07-08p3), Masquefa Obs. (Sept. 2.11-13p3), and Szamotuly-Galowo Obs. (Sept. 4.04p3)
0008P 8P/Tuttle from Chante-Perdrix Obs. (Aug. 30.83-84p3 & Sept. 3.91-92p3) and Masquefa Obs. (Sept. 1.11-13p3)

MPEC 2007-R16 - "16:20 UT" - Comet C/2007 Q3 (Siding Spring)

CK07Q030 C/2007 Q3 (i=66.3°, q=2.327 AU, TP=2009 Oct. 20.406 TT) from Tiki Obs. (Aug. 30.56-60p3) and ANU 1m (Aug. 31.82p2)

MPEC 2007-R15 - "16:15 UT" - Comet P/2007 Q2 (Gilmore)

PK07Q020 P/2007 Q2 (q=1.843 AU, Q=9.469 AU, TP=2007 Aug. 23.905 TT) from roving observer (Aug. 25.02-05p6 & 26.03-05p6), Montcabre Obs. (Aug. 31.93-94p3), and Vega del Thader Obs. (Sept. 3.95p3)

MPEC 2007-R14 - "16:10 UT" - Comet C/2007 N3 (Lulin)

CK07N030 C/2007 N3 (Lulin) (i=178.4°, q=1.211 AU, TP=2009 Jan. 10.6804 TT) from Kiev Comet Station (Aug. 23.82-88p7), Remanzacco Obs. (Aug. 23.87p1), Vega del Thader Obs. (Aug. 23.96-99p5), Masquefa Obs. (Sept. 1.04-06p3), Montcabre Obs. (Sept. 1.89-90p3), and Schiaparelli Obs. (Sept. 1.98p1)

MPEC 2007-R13 - "12:56 UT" - 2007 RJ1

K07R01J 2007 RJ1 (risk-listed, Earth MOID=1.3 LD, H=25.1 ~32m) was discovered at 0703 UT 03 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 3.29-36p7. The discovery was confirmed by Great Shefford Obs. (Sept. 3.92-93p2 & 4.00p1), Farpoint Obs. (Sept. 4.13-15p3), and Grasslands Obs. (Sept. 4.17p3).

MPEC 2007-R12 - "12:53 UT" - 2007 RH1

K07R01H 2007 RH1 (small asteroid, H=22.6 ~102m) was discovered at 0649 UT 03 Sept. by CSS, which observed it at Sept. 3.28-30p3 and 3.34-37p4. The discovery was confirmed by Great Shefford Obs. (Sept. 4.03-04p3), CEAMIG-REA (Sept. 4.10-11p3), Farpoint Obs. (Sept. 4.19-20p4), Grasslands Obs. (Sept. 4.25p3), and MLS (Sept. 4.30-32p4).

MPEC 2007-R11 - "12:50 UT" - 2007 RG1

K07R01G 2007 RG1 (small asteroid, H=25.9 ~22m) was discovered at 0549 UT 03 Sept. by MLS, which observed it at Sept. 3.24-36p11 and 4.24-25p3. The discovery was confirmed by Great Shefford Obs. (Sept. 3.90-91p3), Farpoint Obs. (Sept. 4.17-18p2), and Grasslands Obs. (Sept. 4.18-19p2).

MPEC 2007-R10 - "12:46 UT" - 2007 RF1

K07R01F 2007 RF1 (risk-listed, Earth MOID=4.6 LD, H=26.1 ~20m) was discovered at 0523 UT 03 Sept. by CSS, which observed it at Sept. 3.22-30p8 and 4.27-29p4. The discovery was confirmed by Great Shefford Obs. (Sept. 3.88-89p4), Farpoint Obs. (Sept. 4.12-13p5), Grasslands Obs. (Sept. 4.13p3), and MLS (Sept. 4.24-25p4).

MPEC 2007-R09 - "12:44 UT" - 2007 RE1

K07R01E 2007 RE1 (risk-listed, Q=4.424 AU, H=21.7 ~155m) was discovered at 0942 UT 02 Sept. by MLS, which observed it at Sept. 2.40-42p4 and 3.22-24p4. The discovery was confirmed by Schiaparelli Obs. (Sept. 2.87-90p2), Astronomical Research Obs. (ARO) (Sept. 3.14-15p3), and Farpoint Obs. (Sept. 3.22-24p3).

MPEC 2007-R08 - "12:40 UT" - 2007 RD1

K07R01D 2007 RD1 (H=21.6 ~162m) was discovered at 0937 UT 02 Sept. by MLS, which observed it at Sept. 2.40-42p4 and 4.24-25p4. The discovery was confirmed by Schiaparelli Obs. (Sept. 2.84-85p3), New Millennium Obs. (Sept. 2.86-87p10), McCarthy Obs. (Sept. 3.07-11p4), ARO (Sept. 3.13p3), Farpoint Obs. (Sept. 3.21-22p3 & 4.16-17p4), Great Shefford Obs. (Sept. 3.98-99p2), and Grasslands Obs. (Sept. 4.20-21p3).

<< DOU on 4 Sept. '07 >> MPEC 2007-R07 - "06:07 UT" - Daily Orbit Update

Observations of small asteroids (H>22.0)
K07P08D 2007 PD8 (arc=24 days, H=22.5 ~107m) from Desert Moon Obs. (Sept. 3.32-36p3) and Tiki Obs. (Sept. 3.56-60p3)
Observations of other objects
K07Q03E 2007 QE3 (Q=4.058 AU, arc=13 days, H=19.9 ~355m) from Stia Obs. (Sept. 2.92p3) and Greiner Research Obs. (Sept. 4.21p3)
K07Q02K 2007 QK2 (arc=12 days, H=20.6 ~257m) from Madonna di Dossobuono Obs. (Sept. 2.84-85p3) and Stia Obs. (Sept. 2.87-89p3)
K07P27V 2007 PV27 (arc=19 days, H=20.3 ~295m) from Madonna di Dossobuono Obs. (Sept. 2.82-83p3)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Stia Obs. (Sept. 2.89-90p6) and Hamamatsu-Yuto Obs. (Sept. 3.70-73p5)
K07P09P 2007 PP9 (arc=24 days, H=21.3 ~186m) from Greiner Research Obs. (Sept. 4.20-21p4)
K07P08E 2007 PE8 (arc=113 days, H=19.4 ~446m) from Madonna di Dossobuono Obs. (Sept. 2.88p3), New Millennium Obs. (Sept. 2.92p2 & 2.98-99p2), Hamamatsu-Yuto Obs. (Sept. 3.61-64p2), and Greiner Research Obs. (Sept. 4.17-18p4)
K07P08B 2007 PB8 (arc=2 opp, H=20.9 ~224m) from Madonna di Dossobuono Obs. (Sept. 2.87p3)
K07O00V 2007 OV (arc=49 days, H=19.1 ~513m) from CSS (Sept. 3.38-40p4)
K07L32R 2007 LR32 (arc=102 days, H=17.2 ~1.23 km) from Bolzaneto Obs. (Aug. 31.85-88p3), Santa Mama Obs. (Sept. 2.84-87p8), New Millennium Obs. (Sept. 2.93-94p2), Hamamatsu-Yuto Obs. (Sept. 3.65-67p5), and Greiner Research Obs. (Sept. 4.18p4)
K05T45U 2005 TU45 (arc=3 opp, H=16.9 ~1.41 km) from David Tholen's team on Mauna Kea (Sept. 1.59p1 at R=22.1)
K05O01U 2005 OU1 (arc=3 opp, H=20.2 ~309m) from Desert Moon Obs. (Sept. 3.16-18p3)
K02N04N 2002 NN4 (arc=4 opp, H=20.0 ~339m) from Santa Mama Obs. (Sept. 2.78-81p8) and New Millennium Obs. (Sept. 2.90p1 & 2.96p2)
K01Q34C 2001 QC34 (arc=2 opp, H=19.9 ~355m) from Inastars Obs. (Sept. 3.97-98p3)
J99J03U 1999 JU3 (arc=4 opp, H=19.3 ~467m) from Inastars Obs. (Sept. 3.94p1)
J99D07B 1999 DB7 (arc=3 opp, H=19.9 ~355m) from CSS (Sept. 3.22-24p4)
F4453 154453 2003 CJ11 from New Millennium Obs. (April 18.84-88p3)
D8883 138883 2000 YL29 from CSS (Sept. 3.14-16p4)
A5140 105140 2000 NL10 from Santa Mama Obs. (Sept. 2.82-84p8)
86039 86039 1999 NC43 from New Millennium Obs. (April 18.82-87p4)
16636 16636 1993 QP from New Millennium Obs. (Sept. 2.91-92p4 & 2.97-98p4)
04544 4544 Xanthus (1989 FB) from New Millennium Obs. (April 18.82-87p4)

Observers on 4 September '07

A total of 53 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 6 in MPEC 2007-R17 -- 2007 H1, 2007 G1, 2006 OF2, 2005 L3, 188P, 17P
`H55`	Astronomical Research Obs. in Illinois, 2 in MPECs 2007-R08 & 2007-R09 -- 2007 RE1, 2007 RD1
`413`	Australian Natl. Univ. 1m telescope in New South Wales, 3 in MPECs 2007-R16 & 2007-R17 -- 2007 Q3, 2006 K1, 47P
`A88`	Bolzaneto Obs. in Italy, 1 in MPEC 2007-R07 -- 2007 LR32
`I77`	CEAMIG-REA in Brazil, 1 in MPEC 2007-R12 -- 2007 RH1
`J79`	Calarreona Obs. in Spain, 2 in MPEC 2007-R17 -- 2006 OF2, 2005 L3
`B20`	Carmelita Obs. in Spain, 3 in MPEC 2007-R17 -- 2007 G1, 2006 OF2, 2005 L3
`703`	Catalina Sky Survey in Arizona, 7 in MPECs 2007-R07, 2007-R10, 2007-R12, 2007-R17 & 2007-R18 -- 2007 RO1, 2007 RH1, 2007 RF1, 2007 OV, 2007 G1, 1999 DB7, 138883
`A77`	Chante-Perdrix Obs. in France, 3 in MPEC 2007-R17 -- 2007 O1, 2006 OF2, 8P
`A10`	Corbera Obs. in Spain, 3 in MPEC 2007-R17 -- 2007 G1, 2006 OF2, 2005 L3
`448`	Desert Moon Obs. in New Mexico, 2 in MPEC 2007-R07 -- 2007 PD8, 2005 OU1
`734`	Farpoint Obs. in Kansas, 7 in MPECs 2007-R08, 2007-R09, 2007-R10, 2007-R11, 2007-R12, 2007-R13 & 2007-R17 -- 2007 RJ1, 2007 RH1, 2007 RG1, 2007 RF1, 2007 RE1, 2007 RD1, 29P
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-R18 -- 2007 RO1
`372`	Geisei Obs. in Japan, 2 in MPEC 2007-R17 -- 2006 VZ13, 50P
`651`	Grasslands Obs. in Arizona, 5 in MPECs 2007-R08, 2007-R10, 2007-R11, 2007-R12 & 2007-R13 -- 2007 RJ1, 2007 RH1, 2007 RG1, 2007 RF1, 2007 RD1
`J95`	Great Shefford Obs. in England, 7 in MPECs 2007-R08, 2007-R10, 2007-R11, 2007-R12, 2007-R13, 2007-R17 & 2007-R18 -- 2007 RO1, 2007 RJ1, 2007 RH1, 2007 RG1, 2007 RF1, 2007 RD1, 2006 W3
`H51`	Greiner Research Obs. in Wisconsin, 4 in MPEC 2007-R07 -- 2007 QE3, 2007 PP9, 2007 PE8, 2007 LR32
`458`	Guadarrama Obs. in Spain, 1 in MPEC 2007-R17 -- 2005 L3
`442`	Gualba Obs. in Spain, 5 in MPEC 2007-R17 -- 2007 G1, 2006 OF2, 2005 L3, 189P, 29P
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2007-R18 -- 2007 RO1
`379`	Hamamatsu-Yuto Obs. in Japan, 4 in MPECs 2007-R07 & 2007-R17 -- 2007 PU11, 2007 PE8, 2007 LR32, 2006 OF2
`048`	Hradec Kralove Obs. in the Czech Republic, 4 in MPEC 2007-R17 -- 2007 M3, 2007 G1, 2006 OF2, 2005 L3
`B15`	Inastars Obs. in Germany, 2 in MPEC 2007-R07 -- 2001 QC34, 1999 JU3
`585`	Kiev Comet Station in the Ukraine, 4 in MPECs 2007-R14 & 2007-R17 -- 2007 N3, 2007 M3, 93P, 17P
`704`	LINEAR in New Mexico, 1 in MPEC 2007-R17 -- 2000 P3
`J76`	La Murta Obs. in Spain, 3 in MPEC 2007-R17 -- 2007 M3, 2007 G1, 2005 L3
`J59`	Linceo Obs. in Spain, 1 in MPEC 2007-R17 -- 2006 OF2
`560`	Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2007-R07 -- 2007 QK2, 2007 PV27, 2007 PE8, 2007 PB8
`A02`	Masia Cal Maciarol Modul 8 in Spain, 1 in MPEC 2007-R17 -- 189P
`232`	Masquefa Obs. in Spain, 7 in MPECs 2007-R14 & 2007-R17 -- 2007 N3, 2007 M3, 2006 OF2, 2005 L3, 29P, 17P, 8P
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2007-R07 -- 2005 TU45
`932`	McCarthy Obs. in Connecticut, 1 in MPEC 2007-R08 -- 2007 RD1
`J46`	Montana Blanca Obs. in the Canary Islands, 3 in MPEC 2007-R17 -- 2007 G1, 2006 OF2, 2005 L3
`213`	Montcabre Obs. in Spain, 9 in MPECs 2007-R14, 2007-R15 & 2007-R17 -- 2007 Q2, 2007 N3, 2007 H1, 2007 G1, 2006 OF2, 2005 L3, 189P, 188P, 93P
`945`	Monte Deva Obs. in Spain, 3 in MPEC 2007-R17 -- 2007 H1, 2006 OF2, 2005 L3
`G96`	Mt. Lemmon Survey in Arizona, 6 in MPECs 2007-R08, 2007-R09, 2007-R10, 2007-R11, 2007-R12 & 2007-R13 -- 2007 RJ1, 2007 RH1, 2007 RG1, 2007 RF1, 2007 RE1, 2007 RD1
`608`	NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2007-R17 -- 2000 P3
`J47`	Nazaret Obs. in Spain, 6 in MPEC 2007-R17 -- 2007 G1, 2006 OF2, 189P, 188P, 93P, 50P
`A24`	New Millennium Obs. in Italy, 9 in MPECs 2007-R07, 2007-R08 & 2007-R17 -- 2007 RD1, 2007 PE8, 2007 LR32, 2005 S4, 2002 NN4, 86039, 16636, 154453, 4544
`A32`	Panker Obs. in Germany, 3 in MPEC 2007-R17 -- 2007 G1, 2007 E2, 189P
`473`	Remanzacco Obs. in Italy, 6 in MPECs 2007-R14, 2007-R17 & 2007-R18 -- 2007 RO1, 2007 N3, 2007 M3, 2006 OF2, 2005 L3, 17P
`939`	Rodeno Obs. in Spain, 4 in MPEC 2007-R17 -- 2007 M3, 2007 G1, 2006 OF2, 2005 L3
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2007-R17 -- 2006 VZ13
`B38`	Santa Mama Obs. in Italy, 3 in MPEC 2007-R07 -- 2007 LR32, 2002 NN4, 105140
`204`	Schiaparelli Obs. in Italy, 6 in MPECs 2007-R08, 2007-R09, 2007-R14 & 2007-R17 -- 2007 RE1, 2007 RD1, 2007 N3, 2007 M3, 2005 S4, 2005 L3
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2007-R17 -- 47P
`A78`	Stia Obs. in Italy, 3 in MPEC 2007-R07 -- 2007 QK2, 2007 QE3, 2007 PU11
`147`	Suno Obs. in Italy, 1 in MPEC 2007-R17 -- 2006 W3
`B30`	Szamotuly-Galowo Obs. in Poland, 1 in MPEC 2007-R17 -- 17P
`F85`	Tiki Obs. in Tahiti, 2 in MPECs 2007-R07 & 2007-R16 -- 2007 Q3, 2007 PD8
`J70`	Vega del Thader Obs. in Spain, 9 in MPECs 2007-R14, 2007-R15 & 2007-R17 -- 2007 Q2, 2007 O1, 2007 N3, 2007 M3, 2007 H1, 2007 G1, 2006 OF2, 2005 S4, 2005 L3
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2007-R17 -- 2005 L3
`247`	roving observer, 1 in MPEC 2007-R15 -- 2007 Q2

Impact Risk Monitoring on 4 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 RJ1	JPL	1829	2068-2069	2	1.1e-08	-8.22	-8.22	0	JPL: "Analysis based on 16 observations spanning .87661 days (2007-Sep-03.29425 to 2007-Sep-04.17086)." Diameter approximately 0.031 km. from mean, weighted H=25.2.

2007 RF1	JPL	1829	2099	1	5.9e-09	-9.20	-9.20	0	JPL: "Analysis based on 28 observations spanning 1.0701 days (2007-Sep-03.22432 to 2007-Sep-04.29438)." Diameter approximately 0.021 km. from mean, weighted H=26.1.

2007 RE1	JPL	1829	2013-2106	40	6.9e-08	-5.32	-6.04	0	JPL: "Analysis based on 16 observations spanning .83459 days (2007-Sep-02.40469 to 2007-Sep-03.23928)." Diameter approximately 0.160 km. from mean, weighted H=21.6.

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 4 September '07

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

2355	Grabbed MPEC 2007-R18 - 2007 RO1 - see above
1829	Noted that JPL has posted 2007 RE1 as an impact risk - see above Noted that JPL has posted 2007 RF1 as an impact risk - see above Noted that JPL has posted 2007 RJ1 as an impact risk - see above Grabbed MPEC 2007-R14 - Comet C/2007 N3 (Lulin) - see above Grabbed MPEC 2007-R15 - Comet P/2007 Q2 (Gilmore) - see above Grabbed MPEC 2007-R16 - Comet C/2007 Q3 (Siding Spring) - see above Grabbed MPEC 2007-R17 - Observations of Comets - see above
1436	Grabbed MPEC 2007-R07 - Daily Orbit Update - see above Grabbed MPEC 2007-R09 - 2007 RE1 - see above Grabbed MPEC 2007-R10 - 2007 RF1 - see above Grabbed MPEC 2007-R11 - 2007 RG1 - see above Grabbed MPEC 2007-R12 - 2007 RH1 - see above Grabbed MPEC 2007-R13 - 2007 RJ1 - see above
1435	Grabbed MPEC 2007-R08 - 2007 RD1 - see above

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