Delta Ursae Majoris

URI: https://gptkb.org/entity/Delta_Ursae_Majoris
GPTKB entity
Statements (36)
Predicate Object
gptkbp:instanceOf gptkb:star
astronomer
gptkbp:age 300 million years
gptkbp:apparentMagnitude 3.312
+0.33
gptkbp:BayerDesignation gptkb:δ_Ursae_Majoris
gptkbp:catalogueNumber gptkb:BD+57_1423
gptkb:HD_106591
gptkb:HIP_59774
gptkb:HR_4660
gptkb:SAO_28358
gptkbp:colorIndexB-V +0.04
+0.08
gptkbp:constellation gptkb:Ursa_Major
gptkbp:declination +57° 01′ 57″
gptkbp:diameter 1.6 solar radii
gptkbp:distanceFromEarth 81 light years
gptkbp:hasCompanion no
https://www.w3.org/2000/01/rdf-schema#label Delta Ursae Majoris
gptkbp:luminosity 14 solar luminosities
gptkbp:mass 1.8 solar masses
gptkbp:metallicity −0.04 [Fe/H]
gptkbp:otherName gptkb:Megrez
gptkbp:parallax 40.90 mas
gptkbp:partOf gptkb:Big_Dipper_asterism
gptkbp:properMotionRA +33.17 mas/yr
-119.85 mas/yr
gptkbp:rightAscension 12h 15m 25.6s
gptkbp:rotationPeriod 236 km/s
gptkbp:spectralType gptkb:A3V
gptkbp:temperature 9,360 K
gptkbp:variableStar no
gptkbp:visibleToNakedEye yes
gptkbp:bfsParent gptkb:Ursae_Majoris
gptkb:Megrez
gptkbp:bfsLayer 7