17237+3709 STF2161AC

 
 
17h 23m 40.97s +37 08' 45.3" P.A. 222 sep 117.7 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
2002
Obs
4
Pa first
223
Pa last
222
P.A. Now (θ)
222°
Sep first
119.5
Sep last
117.7
Sep. Now (ρ)
117.7"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 66000 17237+3709 MCA 48 Aa,Ab 1981 2008 8 32 0.3 4.90 5.90 1.00
Show Rho Her 66000 17237+3709 STF2161 AB 1779 2016 402 320 4.1 4.50 5.40 0.90
Show 66000 17237+3709 STF2161 AC 1911 2002 4 222 117.7 4.50 13.53 9.03 <===
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
222.1
Precise sep
117.683
Constellation
Hercules
SAO
66000
HIP
85112
HD
157778
HR
6484
GC
23543
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
last precise pa
222.1
last precise sep
117.683
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17237+3709 STF2161 AC 1998 3 222 118.5 4.50 13.30 B9.5III D 172340.97+370845.3
17237+3709 STF2161 AC 2002 4 222 117.7 4.50 13.30 B9.5III N D 172340.97+370845.3

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