21173+5837 BU 1140 AB (NSV13646)

 
 
21h 17m 18.79s +58° 36' 41.3" P.A. 274.00 sep 4.2 mag 6.43,12.00 Sp B3III dist. 840.34 pc (2741.19 l.y.)
 
 
Coord 2000 21173+5837 Discov num BU 1140 Comp AB Coord arcsec 2000 21 17 18.79 +58 36 41.3
Date first 1889 Date last 2015 Obs 10
Pa first 277 Pa last 273.5 P.A. Now (θ) 273.5°
Sep first 3.9 Sep last 4.188 Sep. Now (ρ) 4.188"
Mag pri 6.43 Mag sec 12.00 delta mag (ΔM) 5.57 Spectral class B3III (blue-white)
Pri motion ra -003 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
21173+5837 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 33288 21 17 19 +58 36 41 PET 2 Aa,Ab 2007 1 271 0.1 6.43
Show NSV13646 33288 21 17 19 +58 36 41 BU 1140 AB 2015 10 274 4.2 6.43 12.00 5.57 <===
Show 33288 21 17 19 +58 36 41 BU 1140 AC 2015 5 271 68.2 6.43 13.30 6.87
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV13646 Constellation Cepheus SAO 33288 HIP 105091
Tycho2 3965-00595-1 Gaia DR2 2191133748536265216 HD 203025 HR 8153
GC 29804 ADS 14832 BD BD+57 2309 Distance 840.34
Distance ly 2741.19