Главная     Выжить во Вселенной    
Services
    Why to Inhabit     Top Contributors     Астрофотография     Коллекция     Форум     Blog New!     Помощь     Войти  
→ Adopt this star  

HD 77661


Оглавление

Изображения

Загрузить ваше изображение

DSS Images   Other Images


Публикации по объекту

UBV photometry of stars whose positions are accurately known.
Photometric indices V, B-V, and U-B were measured for about 560 stars ofthe AGK3R and NPZT catalogs between BD declinations 11 deg and 23 deg,using the 40-cm Cassegrain telescope of the Kvistaberg Observatory fromApril 1986 to May 1987. The observation procedure and the reductiontechnique were the same as in the earlier papers of this series by Oja(1984, 1985, 1986, and 1987). The mean errors were calculated from theinternal consistency of the data. The accuracy was found to be the sameas for the earlier parts of the survey.

Photoelectric observations of lunar occultations. XIV
Observations of 314 events between March 1982 and March 1983 arepresented in the same form as in previous papers in this series. Theresults include 18 cases of duplicity of which 12 appear to be newdiscoveries. Unluckily, few cases of possible large angular diametersoccurred, and in no case can the results derived be accepted withoutreserve, these having been observed at very low altitudes withconsequent severe corruption by seeing effects. A remark on theincidence of doubles in the Hyades and its possible consequences forestimates of stellar distances is appended.

Добавить новую статью


Внешние ссылки

  • - Внешних ссылок не найдено -
Добавить внешнюю ссылку


Группы:


Наблюдательные данные и астрометрия

Созвездие:Рак
Прямое восхождение:09h04m22.16s
Склонение:+18°16'44.4"
Видимая звёздная величина:9.204
Собственное движение RA:-17.2
Собственное движение Dec:-1.1
B-T magnitude:9.876
V-T magnitude:9.26

Каталоги и обозначения:
Собственные имена
HD 1989HD 77661
TYCHO-2 2000TYC 1404-1372-1
USNO-A2.0USNO-A2 1050-05947767
HIPHIP 44529

→ Запросить дополнительные каталоги и обозначения от VizieR