Alkaid

η UMa

B3V Ursa Major Mag 1.85

Current Visibility

Altitude

21.2°

Azimuth

317.3°

naked_eye

Current Position

PropertyValue
Right Ascension (J2000)13h47m32s
Declination (J2000)+49°18'47"
Altitude21.16°
Azimuth317.26°
Hour Angle06h58m52s
ConstellationUrsa Major
Visibilitynaked_eye

Physical Properties

PropertyValue
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

Catalog Designations

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

Rise, Set & Transit

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