Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.
-
Upload
kerry-logan -
Category
Documents
-
view
213 -
download
0
Transcript of Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.
![Page 1: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/1.jpg)
Occultation observations from around the world
July 2012 to Sept 2013
Dave Herald
![Page 2: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/2.jpg)
Part 1
Lunar OccultationsSummary of observations
July 2012 – Sept. 2013
![Page 3: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/3.jpg)
# Observations by region
• Nth America 458• Australasia 1140• Japan 4158• Europe 1451• MiddleEast 25
![Page 4: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/4.jpg)
Double star observations
• WDS stars measured 78• Discoveries 22• OCC stars +’ve measures 7• Wide doubles (>2”) 8• OCC stars NOT double 99• WDS observed as single 24• Doubtful 16
TOTAL 254
Reports collected and analysed by Brian Loader, New Zealand
![Page 5: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/5.jpg)
Part 2
Asteroidal OccultationsSummary of the best events
Jul 2012 – Sept 2013
![Page 6: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/6.jpg)
The number of events is falling....
![Page 7: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/7.jpg)
Number of successful events by region, and max # sites: 2012/07 2013/08
• Australasia23 + 41 (11 sites)• Europe 32 + 33 (34 sites)• Japan 7 + 14 (14 sites)• US 27 + 50 (11 sites)
Japan has a much smaller land area than the other regions;Australasia has a much smaller population
![Page 8: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/8.jpg)
Satellite discoveries#1 Agamemnom – 2012 Jan 19
![Page 9: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/9.jpg)
Satellite discovery #2 Viipuri – 2013 Aug 3(?? - single integrated frame event)
![Page 10: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/10.jpg)
Double stars discovered in asteroidal occultations
• New double stars can be discovered in an asteroidal occultation
• Separations are usually in the range 0.1” to 0.001”
• If several observers, the uncertainty in separation can be less than 1 milli-arcsecond
![Page 11: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/11.jpg)
7 double stars discovered since June 2012
Star number Sep (mas) P.A. Date Asteroid
6223-00442-1 37.8 -69.8 2012 Aug 12 52 Europa
HIP104465 9.2 ± 0.8 171.5 ± 1.2 2012 Nov 25 168 Sibylla
2U42913552 28.2 ± 0.5 107.6 ± 3.6 2012 Dec 3 388 Charybdis
2U46691743 43.0 ± 0.6 237.0 ± 1.2 2013 Jan 27 536 Merapi
1950-00148-1 28.3 ± 0.4 12.3 ± 0.8 2013 Feb 6 92 Undina
6258-00144-2 1.0 -4.0 2013 Jul 24 1271 Isergina
2U30429828 380.0 240.0 2013 Aug 15 611 Valeria
![Page 12: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/12.jpg)
Valeria - 2013 Aug 15 Wide double star (380mas)
Time diff: 66 secs
![Page 13: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/13.jpg)
The 9 best results for the period
![Page 14: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/14.jpg)
430 Hubris 2012 Aug 14, Europe
![Page 15: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/15.jpg)
Pluto2012 Aug 6, Australia
![Page 16: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/16.jpg)
521 Brixia2012 Oct 22, USA
![Page 17: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/17.jpg)
87 Sylvia2013 Jan 6, Europe
![Page 18: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/18.jpg)
45 Eugenia2013 May 20, USA
![Page 19: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/19.jpg)
576 Emanuela2013 July 26, Australia
![Page 20: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/20.jpg)
387 Aquitania2013 Jul 26, USA
![Page 21: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/21.jpg)
489 Comacina2013 Aug 24, USA
![Page 22: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/22.jpg)
139 Juewa2013 Aug 31, Australia
![Page 23: Occultation observations from around the world July 2012 to Sept 2013 Dave Herald.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649f005503460f94c1600c/html5/thumbnails/23.jpg)
Any questions?