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

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