17237+3709 MCA  48Aa,Ab

 
 
17h 23m 40.97s +37 08' 45.3" P.A. 32 sep 0.3 mag 4.90,5.90 Sp B9.5III dist. 120.63 pc (393.5 l.y.)
 
 
Coord 2000
17237+3709
Discov num
MCA  48
Comp
Aa,Ab
Coord arcsec 2000
17 23 40.97 +37 08 45.3
Date first
1981
Date last
2008
Obs
8
Pa first
22
Pa last
32
P.A. Now (θ)
32°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
4.90
Mag sec
5.90
delta mag (ΔM)
1
Spectral class
B9.5III (blue-white)
Pri motion ra
-041
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
N (See Notes)
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
31.9
Precise sep
0.252
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
31.9
last precise sep
0.252
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17237+3709 MCA 48 Aa,Ab 2008 7 32 0.3 4.56   B9.5III N 172340.97+370845.3

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