Rasalhague

α Oph

A5III Ophiuchus Mag 2.43

Trenutna vidljivost

Višina

32.7°

Azimut

196.7°

naked_eye

Trenutni položaj

LastnostVrednost
Right Ascension (J2000)17h10m22s
Declination (J2000)-15°43'27"
Altitude32.74°
Azimuth196.65°
Hour Angle00h59m35s
ConstellationOphiuchus
Visibilitynaked_eye

Fizikalne lastnosti

LastnostVrednost
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

Kataloške oznake

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

Vzhod, zahod in kulminacija

DogodekČas / Vrednost
Rise Time19:49
Transit Time01:01 (altitude: 34.4°)
Set Time06:09