Archive for März, 2011

Sonntag, März 27th, 2011

Station Map for the Occultation by (134) Sophrosyne at Sunday, 2011 April 03 (~ 21:47 UT)

V-Magnitude of target star TYC 6133-01012-1: 10.8 mag
Johnson B-V Colour Index: + 0.5
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.6 mag (data from UCAC3)

The max duration is expected to be 9.9 sec with a max drop of 2.0 mag.
The event will take place at an altitude of 15 deg and at azimuth 147 deg. The sun will be at an altitude of -33 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 1.36 path widths.
The probabilities to see a positive event:

Centre line: ~  84 %
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/2011_04/0403_134_23624.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110403_23624_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(134) Sophrosyne, 2011 April 03, Station Map

Sonntag, März 27th, 2011

Station Map for the Occultation by (708) Raphaela at Friday, 2011 April 01 (~ 21:04 UT)

V-Magnitude of target star TYC 1871-00946-1: 10.1 mag
Johnson B-V Colour Index: + 0.2
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.1 mag (data from UCAC3)

The max duration is expected to be 1.0 sec with a max drop of 5.8 mag.
The event will take place at an altitude of 32 deg and at azimuth 271 deg. The sun will be at an altitude of -26 deg. (At predicted centre line for longitude E 15 deg)

There is a 1 sigma uncertainty interval of  ± 1.21 path widths.
The probabilities to see a positive event:

Centre line: ~  21 %
Path limits: ~  20 %
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/2011_04/0401_708_25020.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110401_25020_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(708) Raphaela, 2011 April 01, Station Map

Sonntag, März 27th, 2011

Station Map for the Occultation by (554) Peraga at Friday, 2011 April 01 (~ 18:50 UT)

V-Magnitude of target star TYC 1343-01414-1: 10.5 mag
Johnson B-V Colour Index: + 0.6
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.3 mag (data from UCAC3)

The max duration is expected to be 5.1 sec with a max drop of 2.9 mag.
The event will take place at an altitude of 61 deg and at azimuth 219 deg. The sun will be at an altitude of -11 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.41 path widths.
The probabilities to see a positive event:

Centre line: ~  78 %
Path limits: ~  49 %
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/2011_04/0401_554_23619.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110401_23619_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(554) Peraga, 2011 April 01; Station Map

Montag, März 21st, 2011

Station Maps for the Occultation by (247) Eukrate at Thursday, 2011 March 24 (~ 19:30 UT)

WEST and EAST

Magnitude of target star 2UCAC 44433717: 13.3 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 13.5 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.5 mag to 12.8 mag (the magnitude of the asteroid).

The max duration is expected to be 3.3 sec with a max drop of 0.5 mag only.
The event will take place at an altitude of 33 deg and at azimuth 289 deg. The sun will be at an altitude of -17 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.58 path widths.
The probabilities to see a positive event:

Centre line: ~  61 %
Path limits: ~  46 %
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/2011_03/0324_247_25886.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110324_25886_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(247) Eukrate, 2011 March 24, Station Map WEST(247) Eukrate, 2011 March 24, Station Map EAST

Montag, März 21st, 2011

Station Map for the Occultation by (856) Backlunda at Wednesday, 2011 March 23 (~ 20:09 UT)

V-Magnitude of target star TYC 1448-00381-1: 12.0 mag
Johnson B-V Colour Index: + 1.3
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.8 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 1.7 mag to 13.4 mag (the magnitude of the asteroid).

The max duration is expected to be 6.6 sec with a max drop of 1.7 mag.
The event will take place at an altitude of 34 deg and at azimuth 95 deg. The sun will be at an altitude of -24 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ± 0.54 path widths.
The probabilities to see a positive event:

Centre line: ~  65 %
Path limits: ~  47 %
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/2011_03/0323_856_23607.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110323_23607_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

(856) Backlunda, 2011 March 23, Station Map

Montag, März 14th, 2011

Station Map for the Occultation by (28) Bellona at Thursday, 2011 March 17 (~ 21:50 UT)

V-magnitude of target star TYC 1354-00368-1: 11.2 mag
Johnson B-V Colour Index: + 0.3
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.6 mag (data from UCAC3)

The max duration is expected to be 14.8 sec with a max drop of 0.8 mag.
The event will take place at an altitude of 43 deg and at azimuth 242 deg. The sun will be at an altitude of -35 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.21 path widths.
The probabilities to see a positive event:

Centre line: ~  98 %
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/2011_03/0317_28_23588.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110317_23588_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(28) Bellona, 2011 March 17, Station Map

Montag, März 14th, 2011

Station Map for the Occultation by (726) Joella at Tuesday, 2011 March 15 (~ 20:17 UT)

V-magnitude of target star TYC 0732-00707-1: 10.7 mag
Johnson B-V Colour Index: + 0.8
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.4 mag (data from UCAC3)

The max duration is expected to be 4.2 sec with a max drop of 5.0 mag.
The event will take place at an altitude of 41 deg and at azimuth 208 deg. The sun will be at an altitude of -20 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 1.02 path widths.
The probabilities to see a positive event:

Centre line: ~  38 %
Path limits: ~  34 %
1 sigma lines:  ~ 14 %
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/2011_03/0315_726_23579.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110315_23579_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

(726) Joella, 2011 March 14, Station Map

Dienstag, März 8th, 2011

Station Map for the Occultation by (78) Diana at Thursday, 2011 March 10 (~ 20:08 UT)

Magnitude of target star 2UCAC 42371052: 12.7 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 12.6 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.6 mag to 12.4 mag (the magnitude of the asteroid).

The max duration is expected to be 6.2 sec with a max drop of 0.6 mag.
The event will take place at an altitude of 62 deg and at azimuth 259 deg. The sun will be at an altitude of -25 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 0.34 path widths.
The probabilities to see a positive event:

Centre line: ~  86 %
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/2011_03/0310_78_25873.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110310_25873_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(78) Diana, 2011 March 10, Station Map

Dienstag, März 8th, 2011

Station Map for the Occultation by (554) Peraga at Tuesday, 2011 March 08 (~ 21:01 UT)

V-Magnitude of target star TYC 01879-00114-1: 10.9 mag
Johnson B-V Colour Index: + 0.5
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.9 mag (data from UCAC3)

The max duration is expected to be 9.2 sec with a max drop of 2.2 mag.
The event will take place at an altitude of 49 deg and at azimuth 235 deg. The sun will be at an altitude of -32 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.25 path widths.
The probabilities to see a positive event:

Centre line: ~  96 %
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/2011_03/0308_554_23559.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110308_23559_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

(554) Peraga, 2011 March 08, Station Map