12 Aug '07 Major News

Contents on 12 August '07

Minor-Object News -- one item
Minor-Object Science -- none yet today
IAU Minor Planet Center
- NEOCP Activity -- seven listings: 1 new, 6 updated
- New MPECs -- one MPEC
- Observers -- eighteen observing facilities
Impact Risk Monitoring -- two 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 12 August '07

"Names and colors changed as school districts combined," Tribune-Review 12 Aug. - Quote: "John A. Brashear (1840-1920) [was] born in Brownsville. Assisted by his wife, Phoebe, Brashear made telescopes in a coal shed in their backyard. Although Brashear was successful in producing his telescopes, he was unable to find local financial backing. So he [found] investors in Pittsburgh... Brashear perfected his telescopes and created the Brashear Co. Making telescopes became his full-time job." - Note: This unlikely news headline is a good start down a long path of American astronomical history that leads right up to daily minor-object news. The article is about removing John Brashear's name from a school district and high school in Brownsville, Pennsylvania, and tells a little about his history. There are still other places named for him, including a street in town and a high school in nearby Pittsburgh, as well as an asteroid and craters on the Moon and Mars. As you may recall from other recent news links, the Steward Observatory's first big telescope in Tucson, Arizona endured a number of delays after it was ordered in 1917. Brashear's company played a key role in getting the mirror made, which it delivered in 1922 after five tries at casting by subcontractors (and two years after John Brashear had passed away). That 0.9-meter telescope was moved to Kitt Peak in 1962 and twenty years later, in disuse, was turned over to Spacewatch for pioneering CCD-based NEO sky survey techniques. It is still in use, as you can see in today's DOU MPEC below. {permalink}

Minor-Object Science on 12 August '07

No science papers are known or prepared yet today.

NEOCP Activity on 12 August '07

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, two were "one nighters."

To learn how observers use the NEOCP, see Suno Observatory's Practical guide on how to observe NEOCP object.

New MPECs on 12 August '07

Minor Planet Electronic Circulars

As of last check at 2353 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 12 Aug. '07 >> MPEC 2007-P40 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K07P08A 2007 PA8 (Q=4.970 AU, arc=3 days, H=15.2 ~3.09 km, q=0.881 AU) from Astronomical Research Obs. (ARO) (Aug. 10.24-26p2 & 10.31p1), LINEAR (Aug. 11.27-31p4), and program code 2 via Crimean Astrophysical Obs. (CrAO) (Aug. 11.86p2 & 11.92-93p4)
K07P06F 2007 PF6 (arc=4 days, H=20.5 ~269m) from Shenton Park Obs. (Aug. 11.62p3) and Great Shefford Obs. (Aug. 11.91-92p3)
Observations of small asteroids (H>22.0)
K07P02F 2007 PF2 (arc=4 days, H=24.6 ~41m) from ARO (Aug. 11.08-09p3)
K07O09R 2007 OR9 (arc=20 days, H=22.1 ~129m) from Great Shefford Obs. (Aug. 11.93-94p2)
K07J16G 2007 JG16 (arc=92 days, H=23.6 ~65m) from ARO (Aug. 11.26-28p2)
Observations of other objects
K07P08E 2007 PE8 (arc=1 day, H=19.7 ~389m) from North Obs. (Aug. 11.96p4)
K07P08B 2007 PB8 (arc=2 days, H=20.8 ~234m) from the Spacewatch 0.9m telescope (Aug. 11.31-32p3), Crimean Astrophysical Obs. (CrAO)/code 2 (Aug. 11.94-95p5), and Great Shefford Obs. (Aug. 11.98-00p3)
K07P06P 2007 PP6 (q=0.364 AU, arc=2 days, H=17.2 ~1.23 km) from Shenton Park Obs. (Aug. 11.64p2)
K07N05C 2007 NC5 (q=0.277 AU, Q=4.618 AU, arc=38 days, H=18.0 ~851m) from Schiaparelli Obs. (Aug. 10.95-96p3)
K07M24B 2007 MB24 (i=47.7°, arc=48 days, H=18.2 ~776m) from ARO (Aug. 11.09-10p3)
K07M06L 2007 ML6 (arc=51 days, H=18.6 ~645m) from the Siding Spring Survey (SSS) (Aug. 11.70-76p4)
K07L32R 2007 LR32 (arc=78 days, H=17.2 ~1.23 km) from Iluro Obs. (Aug. 5.01p2) and Atlante Obs. (Aug. 10.97-01p3)
K07J40E 2007 JE40 (arc=88 days, H=20.0 ~339m) from ARO (Aug. 11.11-12p3)
K07J20Z 2007 JZ20 (i=40.5°, arc=93 days, H=18.4 ~708m) from Guidestar Obs. (Aug. 11.99-02p3)
K07H15E 2007 HE15 (arc=111 days, H=19.6 ~407m) from LINEAR (Aug. 11.33-37p5)
K07F01K 2007 FK1 (arc=145 days, H=20.2 ~309m) from Purple Mtn. Obs. XuYi Station (Aug. 9.77-82p4)
K07DA3T 2007 DT103 (arc=166 days, H=19.1 ~513m) from Iluro Obs. (Aug. 5.08p1), Atlante Obs. (Aug. 11.00-02p4), Linceo Obs. (Aug. 11.05-08p3), and LINEAR (Aug. 11.27-32p5 & 11.38-43p10)
K05G59E 2005 GE59 (arc=2 opp, H=18.1 ~812m) from Eschenberg Obs. (Aug. 12.04-05p3)
K05G22O 2005 GO22 (q=0.336 AU, arc=2 opp, H=18.7 ~616m) from LINEAR (Aug. 11.15-20p4)
K04B11E 2004 BE11 (arc=2 opp, H=19.3 ~467m) from LINEAR (Aug. 11.27-32p5)
K03E54F 2003 EF54 (arc=6 opp, H=20.1 ~323m) from Eschenberg Obs. (Aug. 12.03p6)
K03C11G 2003 CG11 (Q=4.491 AU, arc=2 opp, H=20.5 ~269m) from SSS (Aug. 11.64-68p4)
K03B43B 2003 BB43 (i=40.9°, arc=3 opp, H=17.0 ~1.35 km) from LINEAR (Aug. 11.33-36p3)
K02N04N 2002 NN4 (arc=4 opp, H=20.0 ~339m) from Guidestar Obs. (Aug. 11.96-98p3) and Eschenberg Obs. (Aug. 11.99p7)
K02F00C 2002 FC (Q=4.702 AU, arc=3 opp, H=18.9 ~562m) from ARO (Aug. 10.37-40p3 at V=22.8-23.0 & 11.35-40p3 at V=22.8-9)
K02A31V 2002 AV31 (arc=3 opp, H=20.5 ~269m) from SSS (Aug. 11.76-80p3)
K01Q34C 2001 QC34 (arc=2 opp, H=20.0 ~339m) from Eschenberg Obs. (Aug. 12.01-02p5)
K00Q07T 2000 QT7 (arc=2 opp, H=20.0 ~339m) from LINEAR (Aug. 11.28-32p5)
J99R45K 1999 RK45 (q=0.363 AU, arc=5 opp, H=19.5 ~426m) from ARO (Aug. 11.31-33p3)
J99J03U 1999 JU3 (arc=4 opp, H=19.3 ~467m) from Eschenberg Obs. (Aug. 11.00p7)
J99D07B 1999 DB7 (arc=3 opp, H=19.9 ~355m) from Eschenberg Obs. (Aug. 11.89-92p3)
J97P00N 1997 PN (arc=2 opp, H=19.7 ~389m) from Guidestar Obs. (Aug. 11.86p1 & 11.93-95p2)
J94A01W 1994 AW1 (arc=3 opp, H=17.5 ~1.07 km) from Eschenberg Obs. (Aug. 12.06p2)
E5656 145656 4788 P-L from New Millennium Obs. (Aug. 10.87-92p7)
E0158 140158 2001 SX169 from Leura Obs. (Aug. 8.38-39p5)
D6818 136818 Selqet (1997 MW1) from New Millennium Obs. (Aug. 10.87-91p6)
86324 86324 1999 WA2 from New Millennium Obs. (Aug. 10.89-93p6)
85275 85275 1994 LY from New Millennium Obs. (Aug. 10.87-92p7)
54686 54686 2001 DU8 from LINEAR (Aug. 11.33-38p5)
24443 24443 2000 OG from LINEAR (Aug. 11.15-20p5)
02100 2100 Ra-Shalom (1978 RA) from LINEAR (Aug. 11.39-44p5)
01685 1685 Toro (1948 OA) from Boambee Obs. (Aug. 8.36-38p3, 9.35p1, 9.40p1 & 10.35-38p3)

Observers on 12 August '07

Eighteen observing facilities appear in today's MPECs.

`H55`	Astronomical Research Obs. in Illinois, 7 in MPEC 2007-P40 -- 2007 PA8, 2007 PF2, 2007 JG16, 2007 MB24, 2007 JE40, 2002 FC, 1999 RK45
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2007-P40 -- 2007 LR32, 2007 DT103
`432`	Boambee Obs. in New South Wales, 1 in MPEC 2007-P40 -- 1685
`0952`	program code 2 via Crimean Astrophysical Obs. in the Ukraine, 2 in MPEC 2007-P40 -- 2007 PA8, 2007 PB8
`151`	Eschenberg Obs. in Switzerland, 7 in MPEC 2007-P40 -- 2005 GE59, 2003 EF54, 2002 NN4, 2001 QC34, 1999 JU3, 1999 DB7, 1994 AW1
`J95`	Great Shefford Obs. in England, 3 in MPEC 2007-P40 -- 2007 PF6, 2007 OR9, 2007 PB8
`A17`	Guidestar Obs. in Germany, 3 in MPEC 2007-P40 -- 2007 JZ20, 2002 NN4, 1997 PN
`B19`	Iluro Obs. in Spain, 2 in MPEC 2007-P40 -- 2007 LR32, 2007 DT103
`704`	LINEAR in New Mexico, 10 in MPEC 2007-P40 -- 2007 PA8, 2007 HE15, 2007 DT103, 2005 GO22, 2004 BE11, 2003 BB43, 2000 QT7, 54686, 24443, 2100
`E17`	Leura Obs. in New South Wales, 1 in MPEC 2007-P40 -- 140158
`J59`	Linceo Obs. in Spain, 1 in MPEC 2007-P40 -- 2007 DT103
`A24`	New Millennium Obs. in Italy, 4 in MPEC 2007-P40 -- 145656, 136818, 86324, 85275
`J69`	North Obs. in England, 1 in MPEC 2007-P40 -- 2007 PE8
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-P40 -- 2007 FK1
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2007-P40 -- 2007 NC5
`D21`	Shenton Park Obs., 2 in MPEC 2007-P40 -- 2007 PF6, 2007 PP6
`E12`	Siding Spring Survey in New South Wales, 3 in MPEC 2007-P40 -- 2007 ML6, 2003 CG11, 2002 AV31
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-P40 -- 2007 PB8

Impact Risk Monitoring on 12 August '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 PF6	JPL	1432	R E M O V E D						JPL: Risk listing removed at 1021 UTC.
2007 PF6	NEODyS	1432	R E M O V E D

2007 PA8	JPL	1432	2019-2104	34	6.4e-08	-2.38	-3.02	0	JPL: "Analysis based on 29 observations spanning 2.7216 days (2007-Aug-09.21035 to 2007-Aug-11.93195)." Diameter approximately 2.681 km. from mean, weighted H=15.5.
2007 PA8	NEODyS	1432	2019-2090	23	3.32e-08	-2.44	-3.09	0	NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2007/08/09.211 to 2007/08/11.933."

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 August '07

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

1800	Added link to news story, "Names and colors changed as school districts combined"
1432	Noted that JPL has updated its 2007 PA8 risk assessment - see above Noted that NEODyS has posted 2007 PA8 as an impact risk - see above Noted that JPL has removed 2007 PF6 as an impact risk - see above Noted that NEODyS has removed 2007 PF6 as an impact risk - see above Grabbed MPEC 2007-P40 - Daily Orbit Update - see above

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