18123+0154 A 2260 AB (HD 166823)

18h 12m 18.16s +01° 53' 50.8" P.A. 107.00 sep 1.9 mag 8.56,11.70 Sp G5 dist. 60.39 pc (196.99 l.y.)

Coord 2000 18123+0154 Discov num A  2260 Comp AB Coord arcsec 2000 18 12 18.16 +01 53 50.8
Date first 1910 Date last 2021 Obs 20
Pa first 117 Pa last 106.5 P.A. Now (θ) 106.5°
Sep first 2.5 Sep last 1.95 Sep. Now (ρ) 1.95"
Mag pri 8.56 Mag sec 11.70 delta mag (ΔM) 3.14 Spectral class G5 (yellow)
Pri motion ra +000 Sec motion ra -002
Pri motion dec -037 Sec motion dec -040
Notes




rPM=0.09 (< 0.3, Physical double)

This double is physical.



18123+0154 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 166823 123240 18 12 18 +01 53 51 A 2260 AB 2021 20 107 1.9 8.56 11.70 3.14 <===
Show 123240 18 12 18 +01 53 51 RAO 66 AC 2012 3 72 17.2 8.56 15.90 7.34


Triple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 166823 Constellation Ophiuchus SAO 123240 HIP 89207
Tycho2 0435-01944-1 Gaia DR2 4276093186784192896 HD 166823 BD BD+01 3620
Distance 60.39 Distance ly 196.99