17237+3709 STF 2161 AC

17h 23m 40.97s +37° 08' 45.3" P.A. 221.00 sep 118.4 mag 4.50,13.53 Sp B9.5III dist. 120.63 pc (393.5 l.y.)

Coord 2000 17237+3709 Discov num STF2161 Comp AC Coord arcsec 2000 17 23 40.97 +37 08 45.3
Date first 1911 Date last 2020 Obs 6
Pa first 223 Pa last 221.3 P.A. Now (θ) 221.3°
Sep first 119.5 Sep last 118.36 Sep. Now (ρ) 118.36"
Mag pri 4.50 Mag sec 13.53 delta mag (ΔM) 9.03 Spectral class B9.5III (blue-white)
Pri motion ra -039 Sec motion ra -021
Pri motion dec +009 Sec motion dec +020
Notes N (See Notes)




rPM=0.527

Nature of this double is uncertain.



17237+3709 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 66000 17 23 41 +37 08 45 MCA 48 Aa,Ab 2018 10 23 0.3 4.90 5.90 1.00
Show Rho Her 66000 17 23 41 +37 08 45 STF 2161 AB 2021 417 321 4.0 4.50 5.40 0.90
Show 66000 17 23 41 +37 08 45 STF 2161 AC 2020 6 221 118.4 4.50 13.53 9.03 <===


Quadruple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Hercules SAO 66000 HIP 85112 Tycho2 2604-01776-1
Gaia DR2 1337345927125084416 HD 157778 HR 6484 GC 23543
ADS 10526 BD BD+37 2878 Bayer Rho Herculis Bayer name Rho Her
Flamsteed 75 Herculis Flamsteed name 75 Her Distance 120.63 Distance ly 393.5
Bayer greek ρ Her