Alkaid

η UMa

B3V Ursa Major Mag 1.85

Aktuell synlighet

Höjd

21.0°

Azimut

317.4°

naked_eye

Aktuell position

EgenskapVärde
Right Ascension (J2000)13h47m32s
Declination (J2000)+49°18'47"
Altitude20.96°
Azimuth317.43°
Hour Angle07h00m26s
ConstellationUrsa Major
Visibilitynaked_eye

Fysiska egenskaper

EgenskapVärde
Visual Magnitude1.85
Spectral ClassB3V
Color Index (B-V)-0.19
Distance101.0 light-years
Parallax32.39 mas
Proper Motion (RA)-121.23 mas/yr
Proper Motion (Dec)-15.56 mas/yr
Radial Velocity-11.0 km/s

Katalogbeteckningar

KatalogBeteckning
Hipparcos (HIP)67301
Bright Star Catalogue (HR)5191
Henry Draper (HD)120315
SAO44752
Bayer Designationη UMa
Flamsteed Designation85 UMa

Uppgång, nedgång och kulmination

HändelseTid / Värde
Rise Time13:13
Transit Time00:39 (altitude: 80.7°)
Set Time12:01