Archive for November, 2011

Dienstag, November 29th, 2011

Station Map for the Occultation by (759) Vinifera at Thursday, 2011 December 01 (~ 23:00 UT)

V-Magnitude of target star TYC 3301-00340-1: 10.3 mag
Johnson B-V Colour Index: + 0.9
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.9 mag (data from UCAC3)

The max duration is expected to be 3.9 sec with a max drop of 4.2 mag.
The event will take place at an altitude of 73 deg and at azimuth 295 deg. The sun will be at an altitude of -68 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.72 path widths.
The probabilities to see a positive event:

Centre line: ~ 52 %
Path limits: ~ 42 %
1 sigma lines: ~ 15 %
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_12/1201_759_24294.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111201_24294_Sites.txt

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

Good luck with your observation!

Oliver Klös
IOTA-ES

(759) Vinifera, 2011 December 01, Station Map

Dienstag, November 29th, 2011

Station Map for the Occultation by (2453) Wabash at Thursday, 2011 December 01 (~ 21:14 UT)

V-Magnitude of target star TYC 2416-00024-1: 9.1 mag
Spectral type K2
Johnson B-V Colour Index: + 1.3
UCAC instrumental „pseudo-R“ fit-model magnitude: 8.5 mag (data from UCAC3)

The max duration is expected to be 1.6 sec with a max drop of 6.5 mag.
The event will take place at an altitude of 56 deg and at azimuth 97 deg. The sun will be at an altitude of -53 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 4.44 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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_12/1201_2453_25403.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111201_25403_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(2453) Wabash, 2011 December 01, Station Map

Montag, November 28th, 2011

Station Map for the Occultation by (883) Matterania at Tuesday, 2011 November 29 (~ 03:16 UT)

V-Magnitude of target star TYC 01801-00686-1: 9.5 mag
Johnson B-V Colour Index: + 1.2
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.1 mag (data from UCAC3)

The max duration is expected to be 1.1 sec with a max drop of 5.6 mag.
The event will take place at an altitude of 28 deg and at azimuth 277 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  ± 2.78 path widths.
The probabilities to see a positive event:

Centre line: ~ 14 %
Path limits: ~ 14 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_11/1129_883_25395.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111129_25395_Sites.txt


Good luck with your observation!

Oliver Klös
IOTA-ES

(883) Matterania at, 2011 November 29, Station Map

Sonntag, November 27th, 2011

Station Map for the Occultation by (6479) Leoconnolly at Monday, 2011 November 28 (~ 02:32 UT)

V-Magnitude of target star TYC 0089-01212-1: 10.2 mag
Spectral type: F0
Johnson B-V Colour Index: + 0.9
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.7 mag (data from UCAC3)

 Trans-Atlantic-Event!

Path will cross SE U.S.A. and Mexico too.

The max duration is expected to be 1.1 sec with a max drop of 6.6 mag.
The event will take place at an altitude of 36 deg and at azimuth 233 deg. The sun will be at an altitude of -42 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 5.65 path widths.
The probabilities to see a positive event:

Centre line: ~ 7 %
Path limits: ~ 7 %
1 sigma lines:  ~ 4 %
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_11/1128_6479_25392.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111128_25392_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

(6479) Leoconnolly, 2011 November 28, Station Map

Freitag, November 25th, 2011

Station Maps for the Occultation by (22) Kalliope and its Satellite Linus at Saturday, 2011 November 26 (~ 06:08 UT)
Magnitude of target star 2UCAC 42391159 : 11.2 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.4 mag (data from UCAC3)

(22) Kalliope:

In the case of an occultation, the combined light of the asteroid and the star will drop by 0.5 mag to 10.5 mag.

The max duration is expected to be 22.8 sec with a max drop of 0.5 mag.
The event will take place at an altitude of 31 deg and at azimuth 278 deg. The sun will be at an altitude of -06 deg. (At predicted centre line for latitude N 60 deg 13 min)

There is a 1 sigma uncertainty interval of  ± 0.65 path widths.
The probabilities to see a positive event:

Centre line: ~ 56 %
Path limits: ~ 44 %
1 sigma lines:  ~ 15 %
2 sigma lines: ~ 2 %

Linus:
Calculated by Jean Lecacheux using IMCCE data.

„I have calculated with Occult the LINUS prediction by assuming that the large NE shift of Kalliope’s path on Nov. 22  was caused by the star alone,
so will not happen again. The LINUS offset relative to Kalliope is (-118.4 mas, -13.0 mas),  according to the IMCCE.“ (J. Lecacheux)

The max duration is expected to be 3.8 sec with a max drop of 0.26 mag.
The event will take place at an altitude of 33 deg and at azimuth 274 deg. The sun will be at an altitude of -08 deg. (At predicted centre line for latitude N 60 deg 36 min)

There is a 1 sigma uncertainty interval of  ± 1.19 path widths.
The probabilities to see a positive event:

Centre line: ~ 33 %
Path limits: ~ 30 %
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:
(22) Kalliope:
http://asteroidoccultation.com/2011_11/1126_22_24284.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
(22) Kalliope:
http://www.poyntsource.com/New/Google/20111126_24284_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

Maps for (22) Kalliope

(22) Kalliope, 2011 November 26, Station Map NORTH(22) Kalliope, 2011 November 26, Station Map SOUTH

Map for Linus

Linus, 2011 November 26, Station Map

Mittwoch, November 23rd, 2011

Station Map for the Occultation by (4342) Freud at Friday, 2011 November 25 (~ 22:33 UT)

V-Magnitude of target star TYC 1312-01598-1: 8.7 mag
Spectral type: F0
Johnson B-V Colour Index: + 0.3
UCAC instrumental „pseudo-R“ fit-model magnitude: 8.4 mag (data from UCAC3)

The max duration is expected to be 1.8 sec with a max drop of 7.8 mag.
The event will take place at an altitude of 47 deg and at azimuth 123 deg. The sun will be at an altitude of -63 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 4.69 path widths.
The probabilities to see a positive event:

Centre line: ~ 9 %
Path limits: ~ 8 %
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_11/1125_4342_25387.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111125_25387_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(4342) Freud, 2011 November 25, Station Map

Samstag, November 19th, 2011

Station Maps for the Occultation by (22) Kalliope and its Satellite Linus at Tuesday, 2011 November 22 (~ 02:39 UT)

Magnitude of target star 2UCAC 42217550 : 10.8 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 10.8 mag (data from UCAC3)

(22) Kalliope:
The max duration is expected to be 25.4 sec with a max drop of 0.7 mag.
The event will take place at an altitude of 69 deg and at azimuth 212 deg. The sun will be at an altitude of -39 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.27 path widths.
The probabilities to see a positive event:

Centre line: ~ 88 %
Path limits: ~ 50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

Linus:
The max duration is expected to be 4.3 sec with a max drop of 0.6 mag.
The event will take place at an altitude of 73 deg and at azimuth 189 deg. The sun will be at an altitude of -45 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 2.11 path widths.
The probabilities to see a positive event:

Centre line: ~ 19 %
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:
(22) Kalliope:
http://asteroidoccultation.com/2011_11/1122_22_24271.htm

Linus:
http://asteroidoccultation.com/2011_11/1122_Linus_29104.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
(22) Kalliope:
http://www.poyntsource.com/New/Google/20111122_24271_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

 Maps for (22) Kalliope:

(22) Kalliope, 2011 November 22, Station Map NORTH (22) Kalliope, 2011 November 22, Station Map SOUTH

Map for Linus:

Linus, 2011 November 22, Station Map

Freitag, November 18th, 2011

Station Map for the Occultation by (248) Lameia at Monday, 2011 November 21 (~ 04:46 UT)

V-Magnitude of target star TYC 1342-01919-1: 10.5 mag
Spectral type: K5
Johnson B-V Colour Index: + 1.3
UCAC instrumental „pseudo-R“ fit-model magnitude: 9.8 mag (data from UCAC3)

Trans-Atlantic-Event!
Path will cross SE U.S.A. and Mexico too!

The max duration is expected to be 10.5 sec with a max drop of 3.9 mag.
The event will take place at an altitude of 47 deg and at azimuth 244 deg. The sun will be at an altitude of -18 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.48 path widths.
The probabilities to see a positive event:

Centre line: ~ 70 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_11/1121_248_24267.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111121_24267_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(248) Lameia, 2011 November 21, Station Map

Freitag, November 18th, 2011

Station Map for the Occultation by (40) Harmonia at Monday, 2011 November 21 (~ 02:00 UT)

V-Magnitude of target star TYC 0644-00335-1: 11.1 mag
Johnson B-V Colour Index: + 0.6
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.0 mag (data from UCAC3)

Trans-Atlantic-Event!
Path will cross U.S.A. and Mexico too!

The max duration is expected to be 14.4 sec with a max drop of 0.24 mag.
The event will take place at an altitude of 37 deg and at azimuth 248 deg. The sun will be at an altitude of -50 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ± 0.17 path widths.
The probabilities to see a positive event:

Centre line: ~ 100 %
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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2011_11/1121_40_24266.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111121_24266_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(40) Harmonia, 2011 November 21, Station Map

Freitag, November 18th, 2011

Station Map for the Occultation by (54) Alexandra at Monday, 2011 November 21 (~ 00:43 UT)

Magnitude of target star 2UCAC 43432380 : 12.7 mag
UCAC instrumental „pseudo-R“ fit-model magnitude: 13.0 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 12.8 mag (the magnitude of the asteroid).

The max duration is expected to be 21.8 sec with a max drop of 0.8 mag.
The event will take place at an altitude of 66 deg and at azimuth 119 deg. The sun will be at an altitude of -55 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.45 path widths.
The probabilities to see a positive event:

Centre line: ~ 73 %
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_11/1121_54_28849.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20111121_28849_Sites.txt

Good luck with your observation!

Oliver Klös
IOTA-ES

(54) Alexandra, 2011 November 21, Station Map