21258+3640 S 790 AC

 
 
21h 25m 47.02s +36° 40' 02.5" P.A. 99.00 sep 53.1 mag 5.89,10.22 Sp B0Ib dist. 2777.78 pc (9061.12 l.y.)
 
 
Coord 2000 21258+3640 Discov num S   790 Comp AC Coord arcsec 2000 21 25 47.02 +36 40 02.5
Date first 1895 Date last 2015 Obs 25
Pa first 98 Pa last 98.7 P.A. Now (θ) 98.7°
Sep first 53.9 Sep last 53.143 Sep. Now (ρ) 53.143"
Mag pri 5.89 Mag sec 10.22 delta mag (ΔM) 4.33 Spectral class B0Ib (blue-white)
Pri motion ra +008 Sec motion ra -001
Pri motion dec -010 Sec motion dec -016
Notes N (See Notes)
rPM=0.675
Nature of this double is uncertain.
 
 
21258+3640 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 69 Cyg 71329 21 25 47 +36 40 02 S 790 AB 2015 13 28 34.5 5.89 11.71 5.82
Show 71329 21 25 47 +36 40 02 S 790 AC 2015 25 99 53.1 5.89 10.22 4.33 <===
Show 21 25 51 +36 39 55 FYM 124 CD 2015 7 84 19.4 10.22 13.90 3.68
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 71329 HIP 105811 Tycho2 2715-03977-1
Gaia DR2 1963714268134133120 HD 204172 HR 8209 GC 30016
ADS 14969 BD BD+36 4557 Flamsteed 69 Cygni Flamsteed name 69 Cyg
Distance 2777.78 Distance ly 9061.12