15292+8027 STF 1972 AB (Pi1 UMi)

 
 
15h 29m 11.19s +80° 26' 55.0" P.A. 79.00 sep 31.6 mag 6.64,7.30 Sp G1.5V+G9V dist. 21.85 pc (71.27 l.y.)
 
 
Coord 2000 15292+8027 Discov num STF1972 Comp AB Coord arcsec 2000 15 29 11.19 +80 26 55.0
Date first 1782 Date last 2018 Obs 107
Pa first 87 Pa last 78.9 P.A. Now (θ) 78.9°
Sep first 26.4 Sep last 31.63 Sep. Now (ρ) 31.63"
Mag pri 6.64 Mag sec 7.30 delta mag (ΔM) 0.66 Spectral class G1.5V+G9V (yellow/yellow)
Pri motion ra -225 Sec motion ra -217
Pri motion dec +108 Sec motion dec +106
Notes N T (See Notes, Parallax indicates physical)
rPM=0.033 (< 0.3, Physical double)
This double is physical.
 
 
15292+8027 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Pi1 UMi 2556 15 29 11 +80 26 55 STF 1972 AB 2018 107 79 31.6 6.64 7.30 0.66 <===
Show 2556 15 29 11 +80 26 55 STF 1972 AC 2020 9 101 188.1 6.64 11.40 4.76
Show 15 29 24 +80 27 01 LAF 54 BD 2005 1 271 6.9 5.60 20.10 14.50
Show 15 29 24 +80 27 01 LAF 54 BE 2005 1 272 7.4 5.60 20.30 14.70
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Pi1 UMi Constellation Ursa Minor SAO 2556 HIP 75809
Tycho2 4566-01950-1 Gaia DR2 1720995598827435648 HD 139777 HR 5829
GC 20929 ADS 9696 BD BD+80 480 Bayer Pi 1 Ursae Minoris
Bayer name Pi1 UMi Distance 21.85 Distance ly 71.27 Bayer greek π1 UMi