Sabik
| Doppelstern Sabik (η Ophiuchi) | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||||||||||||
| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||||||||||||
| Sternbild | Schlangenträger | ||||||||||||||||||
| Rektaszension | 17h 10m 22,7s [1] | ||||||||||||||||||
| Deklination | −15° 43′ 29″ [1] | ||||||||||||||||||
| Helligkeiten | |||||||||||||||||||
| Scheinbare Helligkeit | 2,43 mag[1] | ||||||||||||||||||
| Spektrum und Indices | |||||||||||||||||||
| Spektralklasse | A2 IV-V[2] | ||||||||||||||||||
| Astrometrie | |||||||||||||||||||
| Radialgeschwindigkeit | (−2.4 ± 0.3) km/s[2] | ||||||||||||||||||
| Parallaxe | (36.91 ± 0.80) mas[2] | ||||||||||||||||||
| Entfernung | (88 ± 2) Lj (27) pc | ||||||||||||||||||
| Physikalische Eigenschaften | |||||||||||||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||||||||||||
| |||||||||||||||||||
Sabik (von arabisch سابق, DMG sabīq ‚vorausgehend‘) ist die Bezeichnung des Sterns Eta Ophiuchi (η Ophiuchi) im Sternbild Schlangenträger. Sabik hat eine scheinbare Helligkeit von +2,43 mag und gehört der Spektralklasse A2 an. Die Entfernung von Sabik beträgt nicht ganz 90 Lichtjahre (Hipparcos Datenbank).
Siehe auch
Weblinks
Einzelnachweise
- ↑ a b Hipparcos-Katalog (ESA 1997)
- ↑ a b c eta Oph. In: SIMBAD. Centre de Données astronomiques de Strasbourg, abgerufen am 29. Oktober 2018.
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