20339+4642 BU 1489 AB (V2015 Cyg)

 
 
20h 33m 54.84s +46° 41' 37.9" P.A. 16.00 sep 116.5 mag 5.75,9.35 Sp B9pSi dist. 132.28 pc (431.5 l.y.)
 
 
Coord 2000 20339+4642 Discov num BU 1489 Comp AB Coord arcsec 2000 20 33 54.84 +46 41 37.9
Date first 1893 Date last 2012 Obs 13
Pa first 17 Pa last 16 P.A. Now (θ) 16°
Sep first 118.1 Sep last 116.53 Sep. Now (ρ) 116.53"
Mag pri 5.75 Mag sec 9.35 delta mag (ΔM) 3.6 Spectral class B9pSi (blue-white)
Pri motion ra +010 Sec motion ra -002
Pri motion dec +002 Sec motion dec -003
Notes N (See Notes)
rPM=1.275
This double is not physical.
 
 
20339+4642 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49804 20 33 55 +46 41 38 HDS 2940 Aa,Ab 2009 8 46 0.3 5.76 9.48 3.72
Show V2015 Cyg 49804 20 33 55 +46 41 38 BU 1489 AB 2012 13 16 116.5 5.75 9.35 3.60 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V2015 Cyg Constellation Cygnus SAO 49804 HIP 101475
Tycho2 3573-01361-1 Gaia DR2 2071438198315555584 HD 196178 HR 7870
GC 28642 BD BD+46 2977 Distance 132.28 Distance ly 431.5