Archive for Mai, 2011

Samstag, Mai 28th, 2011

Station Map for the Occultation by (1264) Letaba at Wednesday, 2011 June 01 (~ 02:14 UT)

Magnitude of target star 2UCAC 32932962: 12.9 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 13.4 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.8 mag to 13.0 mag (the magnitude of the asteroid).

The max duration is expected to be 5.8 sec with a max drop of 0.8 mag.
The event will take place at an altitude of 51 deg and at azimuth 190 deg. The sun will be at an altitude of -13 deg. (At predicted centre line for longitude E 13 deg)

There is a 1 sigma uncertainty interval of  ± 1.23 path widths.
The probabilities to see a positive event:

Centre line: ~ 32 %
Path limits: ~ 29 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_06/0601_1264_26078.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110601_26078_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(1264) Letaba, 2011 June 01, Station Map

Samstag, Mai 28th, 2011

Station Map for the Occultation by (1036) Ganymed at Monday, 2011 May 30 (~ 01:10 UT)

V-Magnitude of target star TYC 2155-01182-1: 10.8 mag
Johnson B-V Colour Index: + 1.0
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.6 mag (data from UCAC3)

OCCULTATION BY A NEA (Near Earth Asteroid)!
There are more occultations to come in the next months crossing Europe!
Have a look for future events at the special webpage:
http://www.iota-es.de/ganymed_2011.html

The max duration is expected to be 1.5 sec with a max drop of 1.3 mag.
The event will take place at an altitude of 52 deg and at azimuth 123 deg. The sun will be at an altitude of -15 deg. (At predicted centre line for latitude N 50 deg 06 min)

There is a 1 sigma uncertainty interval of  ± 0.66 path widths.
The probabilities to see a positive event:

Centre line: ~ 55 %
Path limits: ~  43 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0530_1036_26072.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110530_26072_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(1036) Ganymed, 2011 May 30, Station Map

Samstag, Mai 28th, 2011

Station Map for the Occultation by (60) Echo at Monday, 2011 May 30 (~ 00:18 UT)

Magnitude of target star 2UCAC 25173541: 12.1 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 0.9 mag to 12.4 mag (the magnitude of the asteroid).

The max duration is expected to be 6.3 sec with a max drop of 0.9 mag.
The event will take place at an altitude of 33 deg and at azimuth 161 deg. The sun will be at an altitude of -29 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 2.21 path widths.
The probabilities to see a positive event:

Centre line: ~ 18 %
Path limits: ~ 18 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0530_60_26071.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110530_26071_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(60) Echo, 2011 May 30, Station Map

Sonntag, Mai 22nd, 2011

Station Map for the Occultation by (313) Chaldaea at Wednesday, 2011 May 25 (~ 22:50 UT)

Magnitude of target star 2UCAC 30051153: 12.7 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 12.3 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.9 mag to 12.9 mag (the magnitude of the asteroid).

The max duration is expected to be 10.1 sec with a max drop of 0.9 mag.
The event will take place at an altitude of 26 deg and at azimuth 137 deg. The sun will be at an altitude of -19 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 1.09 path widths.
The probabilities to see a positive event:

Centre line: ~  35 %
Path limits: ~  32 %
1 sigma lines:  ~ 13 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0525_313_26056.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110525_26056_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(313) Chaldaea, 2011 May 25, Station Map

Samstag, Mai 21st, 2011

Station Map for the Occultation by (2847) Parvati at Friday, 2011 May 27 (~ 23:40 UT)

V-Magnitude of target star TYC 5781-00823-1: 10.2 mag
Johnson B-V Colour Index: + 0.8
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.0 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 17 deg and at azimuth 122 deg. The sun will be at an altitude of -27 deg. (At predicted centre line for longitude E 25 deg)

There is a 1 sigma uncertainty interval of  ± 4.07 path widths.
The probabilities to see a positive event:

Centre line: ~  10 %
Path limits: ~  10 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0527_2847_25102.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110527_25102_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(2847) Parvati, 2011 May 27, Station Map

Freitag, Mai 20th, 2011

Station Map for the Occultation by (889) Erynia at Thursday, 2011 May 26 (~ 00:45 UT)

V-Magnitude of target star HIP 85029: 8.2 mag
Spectral type: K4III
UCAC instrumental „pseudo-R“ fit-model magnitude: 8.1 mag (data from UCAC3)

The max duration is expected to be 1.9 sec with a max drop of 7.1 mag.
The event will take place at an altitude of 30 deg and at azimuth 185 deg. The sun will be at an altitude of -19 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 1.56 path widths.
The probabilities to see a positive event:

Centre line: ~  25 %
Path limits: ~  24 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0526_889_24765.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110526_24765_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(889) Erynia, 2011 May 26, Station Map

Freitag, Mai 20th, 2011

Station Map for the Occultation by (194) Pronke at Tuesday, 2011 May 24 (~ 21:41 UT)

Magnitude of target star 2UCAC 33976096: 11.6 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.9 mag (data from UCAC3)

The max duration is expected to be 30.9 sec with a max drop of 0.5 mag.
The event will take place at an altitude of 26 deg and at azimuth 105 deg. The sun will be at an altitude of -24 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.42 path widths.
The probabilities to see a positive event:

Centre line: ~  76 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_05/0524_194_23750.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110524_23750_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(194) Pronke, 2011 May 24, Station Map

Freitag, Mai 13th, 2011

Station Map for the Occultation by (1036) Ganymed at Monday, 2011 May 16 (~ 22:51 UT)

V-Magnitude of target star TYC 1617-02724-1: 11.1 mag
Johnson B-V Colour Index: + 0.7
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.2 mag (data from UCAC3)

OCCULTATION BY A NEA (Near Earth Asteroid)!
There are more occultations to come in the next months crossing Europe!
Have a look for future events at the special webpage:
http://www.iota-es.de/ganymed_2011.html

The max duration is expected to be 1.4 sec with a max drop of 1.3 mag.
The event will take place at an altitude of 15 deg and at azimuth 82 deg. The sun will be at an altitude of -30 deg. (At predicted centre line for longitude 0 deg)

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

Centre line: ~  48 %
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/2011_05/0516_1036_26040.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110516_26040_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(1036) Ganymed, 2011 May 16, Station Map

Freitag, Mai 13th, 2011

Station Maps for the Occultation by (2192) Pyatigoriya at Sunday, 2011 May 15 (~ 01:05)

NORTH and SOUTH

V-Magnitude of target star HIP 76436: 10.2 mag
Johnson B-V Colour Index: + 0.5
Spectral type: F5

The max duration is expected to be 2.4 sec with a max drop of 5.6 mag.
The event will take place at an altitude of 32 deg and at azimuth 209 deg. The sun will be at an altitude of -24 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 2.98 path widths.
The probabilities to see a positive event:

Centre line: ~  13 %
Path limits: ~  13 %
1 sigma lines:  ~ 7 %
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_05/0515_2192_25085.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20110515_25085_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(2192)  Pyatigoriya, 2011 May 15, Station Map NORTH (2192)  Pyatigoriya, 2011 May 15, Station Map SOUTH