18081+0213 BU 636 AB (HD 165887)

 
 
18h 08m 07.24s +02° 13' 07.2" P.A. 120.00 sep 1.4 mag 6.64,11.80 Sp A4V dist. 134.77 pc (439.62 l.y.)
 
 
Coord 2000 18081+0213 Discov num BU  636 Comp AB Coord arcsec 2000 18 08 07.24 +02 13 07.2
Date first 1878 Date last 2013 Obs 12
Pa first 127 Pa last 119.8 P.A. Now (θ) 119.8°
Sep first 4.9 Sep last 1.439 Sep. Now (ρ) 1.439"
Mag pri 6.64 Mag sec 11.80 delta mag (ΔM) 5.16 Spectral class A4V (white)
Pri motion ra +012 Sec motion ra
Pri motion dec -008 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18081+0213 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 123156 18 08 07 +02 13 07 GII 259 Aa,Ab 2013 1 168 0.1 7.40 7.40 0.00
Show HD 165887 123156 18 08 07 +02 13 07 BU 636 AB 2013 12 120 1.4 6.64 11.80 5.16 <===
Show 123156 18 08 07 +02 13 07 BU 636 AC 2015 6 93 11.7 6.64 13.60 6.96
Show 123156 18 08 07 +02 13 07 BU 636 AD 2002 5 348 40.8 6.64 11.12 4.48
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 165887 Constellation Ophiuchus SAO 123156 HIP 88841
Tycho2 0435-04738-1 Gaia DR2 4468305755100841472 HD 165887 GC 24712
BD BD+02 3498 Distance 134.77 Distance ly 439.62