12154+5702 JNN 240 AE

 
 
12h 15m 25.45s +57° 01' 57.4" P.A. 169.00 sep 5.7 mag 3.31,19.30 Sp A2Vn dist. 24.69 pc (80.54 l.y.)
 
 
Coord 2000 12154+5702 Discov num JNN 240 Comp AE Coord arcsec 2000 12 15 25.45 +57 01 57.4
Date first 2010 Date last 2011 Obs 2
Pa first 167 Pa last 169.2 P.A. Now (θ) 169.2°
Sep first 5.7 Sep last 5.69 Sep. Now (ρ) 5.69"
Mag pri 3.31 Mag sec 19.30 delta mag (ΔM) 15.99 Spectral class A2Vn (white)
Pri motion ra +104 Sec motion ra
Pri motion dec +007 Sec motion dec
Notes N K (See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
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