18421+3445 BLL 34 BC

 
 
18h 42m 10.08s +34° 44' 50.0" P.A. 65.00 sep 91.1 mag 7.73,11.79 Sp A0 dist. 353.36 pc (1152.66 l.y.)
 
 
Coord 2000 18421+3445 Discov num BLL  34 Comp BC Coord arcsec 2000 18 42 10.08 +34 44 50.0
Date first 1879 Date last 2015 Obs 16
Pa first 65 Pa last 64.7 P.A. Now (θ) 64.7°
Sep first 90.9 Sep last 91.13 Sep. Now (ρ) 91.13"
Mag pri 7.73 Mag sec 11.79 delta mag (ΔM) 4.06 Spectral class A0 (white)
Pri motion ra +001 Sec motion ra +001
Pri motion dec -003 Sec motion dec -002
Notes N (See Notes)
rPM=0.316
Nature of this double is uncertain.
 
 
18421+3445 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 67265 18 42 08 +34 44 47 B 2546 Aa,Ab 2016 45 24 0.1 6.50 7.50 1.00 Y
Show HD 173087 67265 18 42 08 +34 44 47 STF 2372 AB 2019 79 82 25.0 6.45 7.73 1.28
Show 67265 18 42 08 +34 44 47 BLL 34 AC 2013 9 69 114.0 6.45 11.79 5.34
Show 18 42 10 +34 44 50 BLL 34 BC 2015 16 65 91.1 7.73 11.79 4.06 <===
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lyra HIP 91712 Tycho2 2645-02012-1 Gaia DR2 2091774627937650688
BD BD+34 3286 Distance 353.36 Distance ly 1152.66