19 Aug '07 Major News

Contents on 19 August '07

Minor-Object News -- three items
Minor-Object Science -- none yet today
IAU Minor Planet Center
- NEOCP Activity -- one listing: 1 new
- New MPECs -- one MPEC
- Observers -- twelve observing facilities
Impact Risk Monitoring -- one object 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 19 August '07

"Occultation (Eclipse) of SAO 77528 by (146) Lucina on Aug. 21," David Dunham 19 Aug. - Quote: "Help us find (146) Lucina's satellite Tuesday morning! In April 1982, an occultation (eclipse of a star) by a probable satellite of (146) Lucina was video recorded ... near Paris, while the occultation by Lucina itself was observed in a different path crossing northern Spain. The observation implies an object at least 6 km across about 1600 km from Lucina... Observers in most of North America have a chance to confirm the satellite; observations are sought over a wide area." - Note: Emphasis added. Also noted on this page are occultations by five other asteroids that will be visible in various parts of North America -- two on August 21st and three the next night. See Chasing the Shadow: The IOTA Occultation Observer's Manual for how to get started in this scientific pursuit. {permalink}
"Astrobleme museum, the state's Centennial get center stage at Ames Day," Enid News & Eagle 19 Aug. - Quote: "Sediment about 9,000 feet deep covers an eight-mile wide crater in the earth, making it invisible from the land or air [but creating] fertile ground for oil and natural gas producers today... Visitors and residents celebrated the opening of the museum, which details a meteor the size of a football [field?] striking into the earth more than 450 million years ago." {permalink}
"Starry skies draw aficionados," Alamogordo Daily News 19 Aug. - Quote: "Another project is an annual Remote Astronomical Automated Telescope Conference. The first was held at The Lodge in Cloudcroft Aug. 4, and 'drew about 20 people, from Texas and California and the local area, and one from back East,' Tom Smith said... Estimates as to the number of telescopes in or around Mayhill [New Mexico] range from more than 50 to several hundred." {permalink}

Minor-Object Science on 19 August '07

No science papers are known or prepared yet today.

NEOCP Activity on 19 August '07

The MPC's NEO Confirmation Page has 1 listing: 1 new

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new listing. This was a "one nighter."

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 August '07

Minor Planet Electronic Circulars

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

<< DOU on 19 Aug. '07 >> MPEC 2007-Q11 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K07P27V 2007 PV27 (arc=4 days, H=20.4 ~282m) from the Siding Spring Survey (SSS) (Aug. 18.51p5)
Observations of small asteroids (H>22.0)
K07O03H 2007 OH3 (arc=29 days, H=24.4 ~45m) from Astronomical Research Obs. (ARO) (Aug. 18.34-39p3 at V=22.2)
K07K02D 2007 KD2 (Q=4.435 AU, arc=82 days, H=23.1 ~81m) from ARO (Aug. 18.17-19p2 at V=22.1-2)
Observations of other objects
K07P28F 2007 PF28 (arc=3 days, H=19.0 ~537m) from Gnosca Obs. (Aug. 17.88p3), Santa Mama Obs. (Aug. 17.90-93p8), Frasso Sabino Obs. (Aug. 17.91-92p4), Madonna di Dossobuono Obs. (Aug. 17.94p3), Linceo Obs. (Aug. 17.00-01p3), Schiaparelli Obs. (Aug. 18.05-06p3), and Eschenberg Obs. (Aug. 18.83-85p14)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.4 ~1.78 km) from Santa Mama Obs. (Aug. 17.98-01p8) and Remanzacco Obs. (Aug. 19.01-03p3)
K07P09P 2007 PP9 (arc=7 days, H=21.3 ~186m) from Frasso Sabino Obs. (Aug. 17.97-98p3)
K07P08E 2007 PE8 (arc=8 days, H=19.5 ~426m) from Gnosca Obs. (Aug. 17.85p3), Frasso Sabino Obs. (Aug. 17.88p6), Linceo Obs. (Aug. 17.93-95p3), Santa Mama Obs. (Aug. 17.94-97p8), and Klet Obs. (Aug. 18.85p6)
K07P08A 2007 PA8 from Schiaparelli Obs. (Aug. 17.99p1 & 18.04p1)
K07P06F 2007 PF6 (arc=10 days, H=20.7 ~245m) from Schiaparelli Obs. (Aug. 17.00p1)
K07N05C 2007 NC5 (q=0.277 AU, Q=4.617 AU, arc=45 days, H=18.0 ~851m) from Madonna di Dossobuono Obs. (Aug. 17.93p3), Frasso Sabino Obs. (Aug. 17.93-94p2), and Santa Mama Obs. (Aug. 18.02-04p6)
K07N04S 2007 NS4 (arc=34 days, H=18.9 ~562m) from SSS (Aug. 18.50-51p5)
K07L32R 2007 LR32 (arc=86 days, H=17.2 ~1.23 km) from Madonna di Dossobuono Obs. (Aug. 17.92p3), Frasso Sabino Obs. (Aug. 17.92-93p4), and Remanzacco Obs. (Aug. 19.01-02p3)
K07L19V 2007 LV19 (arc=64 days, H=19.8 ~371m) from ARO (Aug. 18.08-09p3)
K07L15B 2007 LB15 (arc=66 days, H=19.5 ~426m) from ARO (Aug. 18.14-19p3)
K07L15A 2007 LA15 (arc=66 days, H=19.5 ~426m) from Madonna di Dossobuono Obs. (Aug. 4.85p3) and Santa Mama Obs. (Aug. 17.80-85p8)
K07L00S 2007 LS (Q=4.531 AU, arc=71 days, H=17.7 ~977m) from ARO (Aug. 18.07-09p3)
K07H15E 2007 HE15 (arc=118 days, H=19.6 ~407m) from Eschenberg Obs. (Aug. 18.86-87p7)
K07C26K 2007 CK26 (arc=2 opp, H=19.0 ~537m) from Madonna di Dossobuono Obs. (Aug. 17.91p3), Schiaparelli Obs. (Aug. 18.01-02p5), and Klet Obs. (Aug. 18.84p6)
K04S09T 2004 ST9 (arc=2 opp, H=18.0 ~851m) from Madonna di Dossobuono Obs. (Aug. 4.87-88p3)
K03SM2W 2003 SW222 (arc=3 opp, H=17.2 ~1.23 km) from Frasso Sabino Obs. (Aug. 17.95p2)
K03R07X 2003 RX7 (arc=3 opp, H=18.4 ~708m) from Wildberg Obs. (Aug. 18.97-99p6)
J99J03U 1999 JU3 (arc=4 opp, H=19.2 ~490m) from Eschenberg Obs. (Aug. 18.87-88p6)
E5656 145656 4788 P-L from Eschenberg Obs. (Aug. 18.82p7)
D8883 138883 2000 YL29 from Santa Mama Obs. (Aug. 15.82-84p5)
86324 86324 1999 WA2 from Eschenberg Obs. (Aug. 18.80-81p7)

Observers on 19 August '07

Twelve observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. in Illinois, 5 in MPEC 2007-Q11 -- 2007 OH3, 2007 LV19, 2007 LS, 2007 LB15, 2007 KD2
`151`	Eschenberg Obs. in Switzerland, 5 in MPEC 2007-Q11 -- 2007 PF28, 2007 HE15, 1999 JU3, 86324, 145656
`157`	Frasso Sabino Obs. in Italy, 6 in MPEC 2007-Q11 -- 2007 PP9, 2007 PF28, 2007 PE8, 2007 NC5, 2007 LR32, 2003 SW222
`143`	Gnosca Obs. in Switzerland, 2 in MPEC 2007-Q11 -- 2007 PF28, 2007 PE8
`046`	Klet Obs. in the Czech Republic, 2 in MPEC 2007-Q11 -- 2007 PE8, 2007 CK26
`J59`	Linceo Obs. in Spain, 2 in MPEC 2007-Q11 -- 2007 PF28, 2007 PE8
`560`	Madonna di Dossobuono Obs. in Italy, 6 in MPEC 2007-Q11 -- 2007 PF28, 2007 NC5, 2007 LR32, 2007 LA15, 2007 CK26, 2004 ST9
`473`	Remanzacco Obs. in Italy, 2 in MPEC 2007-Q11 -- 2007 PU11, 2007 LR32
`B38`	Santa Mama Obs. in Italy, 6 in MPEC 2007-Q11 -- 2007 PU11, 2007 PF28, 2007 PE8, 2007 NC5, 2007 LA15, 138883
`204`	Schiaparelli Obs. in Italy, 4 in MPEC 2007-Q11 -- 2007 PF6, 2007 PF28, 2007 PA8, 2007 CK26
`E12`	Siding Spring Survey in New South Wales, 2 in MPEC 2007-Q11 -- 2007 PV27, 2007 NS4
`198`	Wildberg Obs. in Germany, 1 in MPEC 2007-Q11 -- 2003 RX7

Impact Risk Monitoring on 19 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 PV27	JPL	1427	2031-2105	18	1.7e-06	-3.33	-3.83	0	JPL: "Analysis based on 31 observations spanning 3.9467 days (2007-Aug-14.56587 to 2007-Aug-18.51255)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
2007 PV27	NEODyS	1427	2031-2082	24	1.41e-06	-3.38	-3.82	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2007/08/14.567 to 2007/08/18.513."

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 August '07

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

1916	Added link to news story, "Occultation (Eclipse) of SAO 77528 by (146) Lucina on Aug. 21" Added link to news story, "Starry skies draw aficionados" Added link to news story, "Astrobleme museum, the state's Centennial get center stage at Ames Day"
1427	Noted that JPL has updated its 2007 PV27 risk assessment - see above Noted that NEODyS has updated its 2007 PV27 risk assessment - see above Grabbed MPEC 2007-Q11 - Daily Orbit Update - see above

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