18091+3101 BLL  31AB (T Her)

 
 
18h 09m 06.21s +31 01' 16.1" P.A. 321 sep 65 mag 10.04,11.08 Sp M4e dist. 925.93 pc (3020.38 l.y.)
 
 
Coord 2000
18091+3101
Discov num
BLL  31
Comp
AB
Coord arcsec 2000
18 09 06.21 +31 01 16.1
Date first
1877
Date last
2002
Obs
14
Pa first
321
Pa last
321
P.A. Now (θ)
321°
Sep first
66.9
Sep last
65.0
Sep. Now (ρ)
65"
Mag pri
10.04
Mag sec
11.08
delta mag (ΔM)
1.04
Spectral class
M4e (red)
Pri motion ra
-005
Sec motion ra
+014
Pri motion dec
+009
Sec motion dec
-009
Notes
N (See Notes)
rPM=1.573
This double is not physical.
 
 
18091+3101 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show T Her 66680 18091+3101 BLL 31 AB 1877 2002 14 321 65.0 10.04 11.08 1.04 <===
Show 18091+3101 BKO 51 BC 1998 2002 3 206 19.2 11.08 13.20 2.12
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
320.5
Precise sep
64.99
Var name
T Her
Constellation
Hercules
SAO
66680
HIP
88923
Tycho2
2622-01634-1
HD
166382
BD
BD+30 3137
Distance
925.93
Distance ly
3020.38
last precise pa
320.5
last precise sep
64.99
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18091+3101 BLL 31 AB 2002 12 321 65.0 10.04 11.08 M4e N 180906.21+310116.1

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