Merak

β UMa

A1V Ursa Major Mag 2.41

Huidige zichtbaarheid

Hoogte

22.5°

Azimut

37.9°

naked_eye

Huidige positie

EigenschapWaarde
Right Ascension (J2000)11h53m50s
Declination (J2000)+53°41'41"
Altitude22.53°
Azimuth37.94°
Hour Angle-7h53m16s
ConstellationUrsa Major
Visibilitynaked_eye

Fysieke eigenschappen

EigenschapWaarde
Visual Magnitude2.41
Spectral ClassA1V
Color Index (B-V)-0.02
Distance79.7 light-years
Parallax38.99 mas
Proper Motion (RA)107.76 mas/yr
Proper Motion (Dec)11.16 mas/yr
Radial Velocity-12.0 km/s

Catalogusaanduidingen

CatalogusAanduiding
Hipparcos (HIP)58001
Bright Star Catalogue (HR)4295
Henry Draper (HD)95418
SAO43268
Bayer Designationβ UMa
Flamsteed Designation48 UMa

Opkomst, ondergang en doorgang

GebeurtenisTijd / Waarde
StatusCircumpolar (always above horizon)
Transit Time16:40 (altitude: 76.4°)