Archive for März, 2009

Sonntag, März 29th, 2009

Station Map for the Occultation by (3650) Kunming at Monday, 2009 March 30 (~ 22:26 UT)

V-Magnitude of target star TYC 1436-00958-1: 10.2 mag
Johnson B-V Colour Index: + 0.5
The UCAC2 gives a „pseudo-R magnitude“ of  10.0 mag

The max duration is expected to be 2.0 sec with a max drop of  7.4 mag.
The event will take place at an altitude of 60 deg and at azimuth 195 deg. The sun will be at an altitude of -34 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 4.37 path widths.
The probabilities to see a positive event:

Centre line: ~  9 %
Path limits: ~  9 %
1 sigma lines:  ~ 5 %
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_03/0330_3650_20464.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090330_20464_Sites.txt

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

Good luck with your observation!

Oliver Klös

IOTA-ES

(3650) Kunming, 2009 Mar 30, Station Map

Sonntag, März 29th, 2009

Station Map for the Occultation by (233) Asterope at Monday, 2009 March 30 (~ 04:14 UT)

Magnitude of target star 2UCAC 23893228: 13.3 mag

The max duration is expected to be 39.5 sec with a max drop of  0.6 mag.
The event will take place at an altitude of 24 deg and at azimuth 190 deg. The sun will be at an altitude of -16 deg. (At predicted centre line for latitude N 45 deg)

There is a 1 sigma uncertainty interval of  ± 1.32 path widths.
The probabilities to see a positive event:

Centre line: ~  29 %
Path limits: ~  28 %
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_03/0330_233_20004.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090330_20004_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(233) Asterope, 2009 Mar 30, Station Map

Donnerstag, März 19th, 2009

Station Map for the Occultation by (3184) Raab at Friday, 2009 March 20 (~ 01:08 UT)

V-Magnitude of target star HIP 67091: 8.5 mag
Johnson B-V Colour Index: + 1.0
Spectral Type K0
The UCAC2 gives a „pseudo-R magnitude“ of 8.3 mag

The max duration is expected to be 1.1 sec with a max drop of 8.3 mag.
The event will take place at an altitude of 46 deg and at azimuth 186 deg. The sun will be at an altitude of -37 deg. (At predicted centre line for longitude E 15 deg)

There is a 1 sigma uncertainty interval of  ± 6.77 path widths.
The probabilities to see a positive event:

Centre line: ~  6 %
Path limits: ~  6 %
1 sigma lines:  ~ 3 %
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_03/0320_3184_20463.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(3184) Raab, 2009 Mar 20, Station Map NORTH(3184) Raab, 2009 Mar 20, Station Map SOUTH

Sonntag, März 15th, 2009

Station Map for the Occultation by (1329) Eliane at Friday/Saturday, 2009 March 20/21 (~ 00:00 UT)

V-Magnitude of target star TYC 1426-00930-1: 9.4 mag
Johnson B-V Colour Index: + 1.3
Spectral Type K0
The UCAC2 gives a „pseudo-R magnitude“ of 9.4 mag

The max duration is expected to be 2.5 sec with a max drop of 5.9 mag.
The event will take place at an altitude of 51 deg and at azimuth 234 deg. The sun will be at an altitude of -40 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 1.48 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_03/0321_1329_18777.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090321_18777_Sites.txt

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

Good luck with your observation!

Oliver Klös

IOTA-ES

(1329) Eliane, 2009 Mar 20/21, Station Map


Sonntag, März 15th, 2009

Station Map for the Occultation by (1970) Sumeria at Tuesday, 2009 March 17 (~ 19:32 UT)

V-Magnitude of target star TYC 1869-00408-1: 9.1 mag
Johnson B-V Colour Index: + 0.6
Spectral Type A7
The UCAC2 gives a „pseudo-R magnitude“ of 9.0 mag

The max duration is expected to be 1.2 sec with a max drop of  7.7 mag.
The event will take place at an altitude of 60 deg and at azimuth 245 deg. The sun will be at an altitude of -20 deg. (At predicted centre line for longitude E 06 deg)

There is a 1 sigma uncertainty interval of  ± 2.36 path widths.
The probabilities to see a positive event:

Centre line: ~  17 %
Path limits: ~  16 %
1 sigma lines:  ~ 8 %
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_03/0317_1970_18854.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090317_18854_Sites.txt

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

Good luck with your observation!

Oliver Klös

IOTA-ES

(1979) Sumeria, 2009 Mar 17, Station Map