Archive for September, 2009

Mittwoch, September 30th, 2009

Station Map for the Occultation by (572) Rebekka at Thursday, 2009 October 01 (~ 20:28 UT)

Magnitude of target star 2UCAC 30779321: 11.5 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.7 mag (data from UCAC3)

The max duration is expected to be 4.8 sec with a max drop of 2.4 mag.
The event will take place at an altitude of  34 deg and at azimuth 175 deg. The sun will be at an altitude of -30 deg. (At predicted centre line for latitude N 53 deg)

There is a 1 sigma uncertainty interval of  ± 1.75 path widths.
The probabilities to see a positive event:

Centre line: ~  23 %
Path limits: ~  22 %
1 sigma lines:  ~ 10 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_10/1001_572_17997.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20091001_17997_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20October.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(572) Rebekka, 2009 Oct 01, Station Map

Samstag, September 26th, 2009

Station Map for the Occultation by (2235) Vittore at Sunday, 2009 September 27 (~ 02:19 UT)

V-Magnitude of target star TYC 0718-00720-1: 9.2 mag
Spectral type: A2
Johnson B-V Colour Index: + 0.1
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.2 mag (data from UCAC3)

The max duration is expected to be 2.6 sec with a max drop of 6.6 mag.
The event will take place at an altitude of  38 deg and at azimuth 114 deg. The sun will be at an altitude of -39 deg. (At predicted centre line for longitude W 02 deg)

There is a 1 sigma uncertainty interval of  ± 1.98 path widths.
The probabilities to see a positive event:

Centre line: ~  20 %
Path limits: ~  19 %
1 sigma lines:  ~ 9 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0927_2235_18874.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090927_18874_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(2235) Vittore, 2009 Sep 27, Station Map

Donnerstag, September 17th, 2009

Station Map for the Occultation by (468) Lina at Monday, 2009 September 21 (~ 19:08 UT)

V-Magnitude of target star TYC 6810-00243-1: 9.9 mag
Spectral type: K2
UCAC instrumental „pseudo-R“ fit-model magnitude: 8.9 mag (data from UCAC3)

The max duration is expected to be 6.6 sec with a max drop of 4.8 mag.
The event will take place at an altitude of  10 deg and at azimuth 215 deg. The sun will be at an altitude of -15 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ± 0.75 path widths.
The probabilities to see a positive event:

Centre line: ~  50 %
Path limits: ~  41 %
1 sigma lines:  ~ 15 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0921_468_17954.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090921_17954_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(468) Lina, 2009 Sep 21

Donnerstag, September 17th, 2009

Station Map for the Occultation by (405) Thia at Sunday, 2009 September 20 (~ 04:48 UT)

V-Magnitude of target star HIP 29757: 9.2 mag
Johnson B-V Colour Index: + 0.1
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.0 mag (data from UCAC3)

DOUBLE STAR! PATH SHIFT EXPECTED.

WDS 2006.5 gives magnitudes of 9.47 and 10.77. Separation 0.3 arcsec at position angle 36 deg (measured 1995).

The max duration is expected to be 6.6 sec with a max drop of 4.8 mag.
The event will take place at an altitude of  63 deg and at azimuth 123 deg. The sun will be at an altitude of -13 deg. (At predicted centre line for longitude W 02 deg)

There is a 1 sigma uncertainty interval of  ± 0.47 path widths.
The probabilities to see a positive event:

Centre line: ~  71 %
Path limits: ~  48 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0920_405_17944.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090920_17944_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(405) Thia, 2009 Sep 20, Station Map

Mittwoch, September 9th, 2009

Station Map for the Occultation by (1157) Arabia at Wednesday, 2009 September 09 (~ 21:17 UT)

V-Magnitude of target star HIP 116660: 8.7 mag
Spectral Type: F8
Johnson B-V Colour Index: + 0.5
The UCAC2 gives a „pseudo-R magnitude“ of  8.8  mag

The max duration is expected to be 2.7 sec with a max drop of  5.4 mag.
The event will take place at an altitude of  34 deg and at azimuth 120 deg. The sun will be at an altitude of -32 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 1.33 path widths.
The probabilities to see a positive event:

Centre line: ~  29 %
Path limits: ~  27 %
1 sigma lines:  ~ 12 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0909_1157_18745.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090909_18745_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(1157) Arabia, 2009 Sep 09, Station Map

Sonntag, September 6th, 2009

Station Map for the Occultation by (245) Vera at Wednesday, 2009 September 09 (~ 04:55 UT)

Magnitude of target star 2UCAC 40323088: 11.4 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.51 mag (data from UCAC3)

The max duration is expected to be 3.1 sec with a max drop of  1.9 mag.
The event will take place at an altitude of 55 deg and at azimuth 108 deg. The sun will be at an altitude of -12 deg. (At predicted centre line for longitude W 06 deg)

There is a 1 sigma uncertainty interval of  ± 1.45 path widths.
The probabilities to see a positive event:

Centre line: ~  27 %
Path limits: ~  26 %
1 sigma lines:  ~ 11 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0909_245_17904.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090909_17904_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(245) Vera, 2009 Sep 09, Station Map

Sonntag, September 6th, 2009

Station Map for the Occultation by (856) Backlunda at Wednesday, 2009 September 09 (~ 02:49 UT)

V-Magnitude of target star TYC 0066-00038-1: 10.3 mag
Spectral Type: K0
Johnson B-V Colour Index: + 0.8
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.96 mag (data from UCAC3)

The max duration is expected to be 5.8 sec with a max drop of  5.3 mag.
The event will take place at an altitude of 42 deg and at azimuth 138 deg. The sun will be at an altitude of -29 deg. (At predicted centre line for longitude W 01 deg)

There is a 1 sigma uncertainty interval of  ± 0.79 path widths.
The probabilities to see a positive event:

Centre line: ~  47 %
Path limits: ~  40 %
1 sigma lines:  ~ 15 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0909_856_17903.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090909_17903_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s data):
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(856) Backlunda, 2009 Sep 09, Station Map

Sonntag, September 6th, 2009

Station Map for the Occultation by (96) Aegle at Tuesday, 2009 September 08 (~ 20:44 UT)

V-Magnitude of target star TYC 0568-00661-1: 10.5 mag
Johnson B-V Colour Index: + 1.4
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.23 mag (data from UCAC3)

The max duration is expected to be 10.9 sec with a max drop of  2.2 mag.
The event will take place at an altitude of 36 deg and at azimuth 123 deg. The sun will be at an altitude of -27 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 0.20 path widths.
The probabilities to see a positive event:

Centre line: ~  99 %
Path limits: ~  50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_09/0908_96_17902.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090908_17902_Sites.txt

Map and Coordinates at the web page of  E.A.O.N.:
http://astrosurf.com/eaon/Occultations%20September.htm

Good luck with your observation!

Oliver Klös

IOTA-ES
(96) Aegle, 2009 Sep 08, Station Map