12154+5702 BLL  29AB (Megrez)

 
 
12h 15m 25.45s +57 01' 57.4" P.A. 73 sep 179.7 mag 3.30,10.21 Sp A3V 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
2014
Obs
15
Pa first
73
Pa last
73
P.A. Now (θ)
73°
Sep first
192.4
Sep last
179.7
Sep. Now (ρ)
179.7"
Mag pri
3.30
Mag sec
10.21
delta mag (ΔM)
6.91
Spectral class
A3V (white)
Pri motion ra
+104
Sec motion ra
+021
Pri motion dec
+008
Sec motion dec
-017
Notes
N (See Notes)
rPM=0.831
This double is not physical.
 
 
12154+5702 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Megrez 28315 12154+5702 BLL 29 AB 1878 2014 15 73 179.7 3.30 10.21 6.91 <===
Show 28315 12154+5702 BUP 140 AC 1879 2008 7 128 175.3 3.30 11.62 8.32
Show 28315 12154+5702 JNN 240 AD 2010 2011 2 113 3.3 3.31 18.40 15.09
Show 28315 12154+5702 JNN 240 AE 2010 2011 2 169 5.7 3.31 19.30 15.99
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
73
Precise sep
179.7
Common name
Megrez
Meaning
insertion point
Other names
KAFFA
Constellation
Ursa Major
SAO
28315
HIP
59774
Tycho2
3837-01070-1
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
Distance
24.69
Distance ly
80.54
last precise pa
73
last precise sep
179.7
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12154+5702 BLL 29 AB 2002 11 73 182.7 3.30 10.21 A3V N D 121525.45+570157.4
12154+5702 BLL 29 AB 2008 12 74 182.0 3.30 10.21 A3V N D 121525.45+570157.4
12154+5702 BLL 29 AB 2012 14 73 180.7 3.30 10.21 A3V N D 121525.45+570157.4
12154+5702 BLL 29 AB 2014 15 73 179.7 3.30 10.21 A3V N 121525.45+570157.4

If you need more information about this double, apply for a data request form to the WDS.