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Visual measurements of southern double stars
A double-star observing program is described which has been started atCordoba with a 30 cm refractor. Usually neglected Index Catalog ofVisual Double Stars (IDS) pairs south of -60 deg are selected forobservation, most of them having been measured only one or two timespreviously. A total of 174 micrometric observations of 78 wide pairs arepresented together with a few measurements of 9 double stars not foundin the IDS. Also reported is a list of 135 additional measurements of 26test stars. By comparison with all earlier observations, an estimate forthe personal equation has been made, which is applied in combinationwith catalogue proper motions to investigate the nature of many of thesepairs.
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Наблюдательные данные и астрометрия
| Созвездие: | Южная Гидра |
| Прямое восхождение: | 01h24m58.92s |
| Склонение: | -79°53'37.5" |
| Видимая звёздная величина: | 9.808 |
| Собственное движение RA: | 74.1 |
| Собственное движение Dec: | -24.9 |
| B-T magnitude: | 11.038 |
| V-T magnitude: | 9.91 |
Каталоги и обозначения:
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