16554+1826 BU  954AB (54 Her)

 
 
16h 55m 22.24s +18 25' 59.5" P.A. 179 sep 2.5 mag 5.40,9.60 Sp K4III-IV dist. 120.05 pc (391.6 l.y.)
 
 
Coord 2000
16554+1826
Discov num
BU  954
Comp
AB
Coord arcsec 2000
16 55 22.24 +18 25 59.5
Date first
1879
Date last
1967
Obs
17
Pa first
175
Pa last
179
P.A. Now (θ)
179°
Sep first
2.6
Sep last
2.5
Sep. Now (ρ)
2.5"
Mag pri
5.40
Mag sec
9.60
delta mag (ΔM)
4.2
Spectral class
K4III-IV (yellow-orange)
Pri motion ra
-111
Sec motion ra
Pri motion dec
+010
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
16554+1826 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 54 Her 102476 16554+1826 BU 954 AB 1879 1967 17 179 2.5 5.40 9.60 4.20 <===
Show 102476 16554+1826 FOX 196 AC 1913 2001 4 317 88.7 5.52 12.50 6.98
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
179.2
Precise sep
2.48
Name
54 Her
Constellation
Hercules
SAO
102476
HIP
82802
Tycho2
1525-01264-1
HD
152879
HR
6293
GC
22816
BD
BD+18 3266
Flamsteed
54 Herculis
Flamsteed name
54 Her
Distance
120.05
Distance ly
391.6
last precise pa
179.2
last precise sep
2.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16554+1826 BU 954 AB 1967 17 179 2.5 5.35 12.90 K4III-IV N 165522.24+182559.5

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