Rasalhague

α Oph

A5III Ophiuchus Mag 2.43

Nuna videbleco

Alto

15.8°

Azimuto

232.8°

naked_eye

Nuna pozicio

EcoValoro
Right Ascension (J2000)17h10m22s
Declination (J2000)-15°43'27"
Altitude15.83°
Azimuth232.83°
Hour Angle03h32m49s
ConstellationOphiuchus
Visibilitynaked_eye

Fizikaj ecoj

EcoValoro
Visual Magnitude2.43
Spectral ClassA5III
Color Index (B-V)0.15
Distance48.6 light-years
Parallax38.77 mas
Proper Motion (RA)41.16 mas/yr
Proper Motion (Dec)97.65 mas/yr
Radial Velocity12.6 km/s

Katalogaj nomoj

KatalogoNomo
Hipparcos (HIP)84012
Bright Star Catalogue (HR)6556
Henry Draper (HD)159561
SAO123129
Bayer Designationα Oph
Flamsteed Designation55 Oph

Leviĝo, Subiro kaj Transito

Ĉielaj EventojTempo / Valoro
Rise Time22:50
Transit Time04:02 (altitude: 34.4°)
Set Time09:09