Ýçindekiler
Görüntüler
Resim Yükleyin
DSS Images Other Images
Ýlgili Makaleler
An Astrometric Study of the Binary Star α Ophiuchi
The work reported here combines data from the Multichannel AstrometricPhotometer (MAP), the European astrometric satellite, Hipparcos, andinfrared speckle observations of the nearby subgiant binary star systemα Oph. The A5 IV primary is found to have a mass of 2.84+/-0.19Msolar, while the approximately K2 V companion has a mass of0.78+/-0.058 Msolar. The distance modulus is 0.834+/-0.024mag, yielding an absolute visual magnitude of 1.248+/-0.025 mag and anabsolute K magnitude of the secondary of 4.3+/-0.2 mag. Tables list theMAP data and an ephemeris that indicates that the next 4 yr are idealfor further interferometry.
|
Yeni bir Makale Öner
Ýlgili Baðlantýlar
Yeni Bir Baðlantý Öner
sonraki gruplarýn üyesi:
|
Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Yilanci |
| Sað Açýklýk: | 17h33m49.37s |
| Yükselim: | +12°13'19.7" |
| Görünürdeki Parlaklýk: | 8.935 |
| özdevim Sað Açýklýk: | 0.1 |
| özdevim Yükselim: | -0.3 |
| B-T magnitude: | 9.388 |
| V-T magnitude: | 8.973 |
Kataloglar ve belirtme:
|
