12154+5702 BLL 29 AB (Megrez)

 
 
12h 15m 25.45s +57° 01' 57.4" P.A. 75.00 sep 181.9 mag 3.30,10.21 Sp A2V dist. 24.69 pc (80.54 l.y.)
 
 
Coord 2000 12154+5702 Discov num BLL  29 Comp AB Coord arcsec 2000 12 15 25.45 +57 01 57.4
Date first 1878 Date last 2020 Obs 17
Pa first 73 Pa last 74.9 P.A. Now (θ) 74.9°
Sep first 192.4 Sep last 181.938 Sep. Now (ρ) 181.938"
Mag pri 3.30 Mag sec 10.21 delta mag (ΔM) 6.91 Spectral class A2V (white)
Pri motion ra +104 Sec motion ra +020
Pri motion dec +007 Sec motion dec -018
Notes N S (See Notes, Parallax indidates non-physical)
rPM=0.841
This double is not physical.
 
 
12154+5702 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Megrez 28315 12 15 25 +57 01 57 BLL 29 AB 2020 17 75 181.9 3.30 10.21 6.91 <===
Show 28315 12 15 25 +57 01 57 BUP 140 AC 2020 9 130 174.8 3.30 11.62 8.32
Show 28315 12 15 25 +57 01 57 JNN 240 AD 2011 2 113 3.3 3.31 18.40 15.09
Show 28315 12 15 25 +57 01 57 JNN 240 AE 2011 2 169 5.7 3.31 19.30 15.99
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Megrez Var name NSV5513 UMa Constellation Ursa Major SAO 28315
HIP 59774 Tycho2 3837-01070-1 Gaia DR2 1575287046603149056 HD 106591
HR 4660 GC 16736 GL Gl 459 BD BD+57 1363
Bayer Delta Ursae Majoris Bayer name Del UMa Flamsteed 69 Ursae Majoris Flamsteed name 69 UMa
FK5 456 Distance 24.69 Distance ly 80.54 Bayer greek δ UMa
Other names KAFFA
Meaning insertion point