Archive for November, 2010

Samstag, November 20th, 2010

Station Map for the Occultation by (530) Turandot at Monday, 2010 November 22 (~ 05:10 UT)

TRANS-ATLANTIC EVENT!
This occultation will be visible in Canada and NW U.S.A. too.

Magnitude of target star 2UCAC 37148522: 11.3 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.5 mag (data from UCAC3)

The max duration is expected to be 9.9 sec with a max drop of 3.4 mag.
The event will take place at an altitude of 38 deg and at azimuth 245 deg. The sun will be at an altitude of -18 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ± 0.46 path widths.
The probabilities to see a positive event:

Centre line: ~  72 %
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/2010_11/1122_530_21484.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101122_21484_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(530) Turandot, 2010 November 22, Station Map

Samstag, November 20th, 2010

Station Map for the Occultation by (152) Atala at Monday, 2010 November 22 (~ 05:01 UT)

V-Magnitude of target star TYC 0863-00771-1: 11.7 mag
Johnson B-V Colour Index: + 0.1
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.2 mag (data from UCAC3)

The max duration is expected to be 3.0 sec with a max drop of 2.6 mag.
The event will take place at an altitude of 45 deg and at azimuth 120 deg. The sun will be at an altitude of -22 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 0.71 path widths.
The probabilities to see a positive event:

Centre line: ~  52 %
Path limits: ~  42 %
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/2010_11/1122_152_25648.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101122_25648_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(152) Atala, 2010 November 22, Station Map

Samstag, November 20th, 2010

Station Map for the Occultation by (1212) Francette at Monday, 2010 November 22 (~ 03:36 UT)

Magnitude of target star 2UCAC 36810114: 13.0 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 13.3 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 2.2 mag to 15.0 mag (the magnitude of the asteroid).

The max duration is expected to be 42.3 sec with a max drop of 2.2 mag.
The event will take place at an altitude of 52 deg and at azimuth 196 deg. The sun will be at an altitude of -31 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ± 0.81 path widths.
The probabilities to see a positive event:

Centre line: ~  46 %
Path limits: ~  39 %
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/2010_11/1122_1212_25893.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101122_25893_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(1212) Francette, 2010 November 22, Station Map

Dienstag, November 2nd, 2010

Station Maps for the Occultation by (7353) Kazuya at Thursday, 2010 November 04 (~ 19:30 UT)

SOUTH and NORTH

V-Magnitude of target star HIP 26613: 7.3 mag
Colour Index: M1
UCAC instrumental „pseudo-R“ fit-model magnitude: 6.7 mag (data from UCAC3)

The max duration is expected to be 2.3 sec with a max drop of 9.0 mag.
The event will take place at an altitude of 27 deg and at azimuth 35 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  ± 7.28 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/2010_11/1104_7353_22418.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101104_22418_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(7353) Kazuya, 2010 November 04, Station Map SOUTH(7353) Kazuya, 2010 November 04, Station Map NORTH

Dienstag, November 2nd, 2010

Station Maps for the Occultation by (409) Aspasia at Thursday, 2010 November 04 (~ 17:55 UT)

NORTH and SOUTH

Magnitude of target star 2UCAC 34032818: 12.0 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 0.8 mag to 12.1 mag (the magnitude of the asteroid).

The max duration is expected to be 25.6 sec with a max drop of 0.8 mag.
The event will take place at an altitude of 38 deg and at azimuth 162 deg. The sun will be at an altitude of -23 deg. (At predicted centre line for longitude E 15 deg)

There is a 1 sigma uncertainty interval of  ± 0.32 path widths.
The probabilities to see a positive event:

Centre line: ~ 88 %
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/2010_11/1104_409_21405.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101104_21405_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(409) Aspasia, 2010 November 04, Station Map NORTH(409) Aspasia, 2010 November 04, Station Map SOUTH

Dienstag, November 2nd, 2010

Station Map for the Occultation by (1520) Imatra at Thursday, 2010 November 04 (~ 01:26 UT)

V-Magnitude of target star TYC 0797-01031-1: 9.8 mag
Johnson B-V Colour Index: + 1.1
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.4 mag (data from UCAC3)

The max duration is expected to be 3.3 sec with a max drop of 6.0 mag.
The event will take place at an altitude of 25 deg and at azimuth 116 deg. The sun will be at an altitude of -41 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: ~  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/2010_11/1104_1520_22417.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20101104_22417_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(1520) Imatra, 2010 November 04, Station Map