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VRI photometry of wide double stars with A- type primaries.
We are presenting VRI photometry of 93 wide visual double stars havinglate B- or A- type primaries, taken from the Annex of Double andMultiple Stars of the HIPPARCOS Input Catalogue. Spectral types havebeen estimated for most of the primaries and for the majority of thesecondaries. 40% of them probably have common origin components, forwhich we calculated photometric parallaxes and some orbital valuesestimates.
| Visual measures of 193 double and multiple stars
Micrometer measurements of 174 double stars obtained with 26 1/2-in. and10-in. refractors are presented, along with interferometric measurementsof 19 double stars performed using 20-in. and 36-in. reflectors. Theresults reported include star coordinates, position angles, separations,probable errors, orbital residuals, and identifications of wide doubleswith separations of up to 2 arcmin.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Karina |
| Sað Açýklýk: | 10h20m49.89s |
| Yükselim: | -67°31'14.2" |
| Görünürdeki Parlaklýk: | 8.832 |
| Uzaklýk: | 310.559 parsek |
| özdevim Sað Açýklýk: | -18.7 |
| özdevim Yükselim: | 7.5 |
| B-T magnitude: | 8.973 |
| V-T magnitude: | 8.844 |
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