18203+2104 HDS2592

 
 
18h 20m 18.19s +21 04' 25.0" P.A. 184 sep 0.5 mag 7.80,11.36 Sp B9 dist. 418.41 pc (1364.85 l.y.)
 
 
Coord 2000
18203+2104
Discov num
HDS2592
Comp
Coord arcsec 2000
18 20 18.19 +21 04 25.0
Date first
1991
Date last
2008
Obs
2
Pa first
185
Pa last
184
P.A. Now (θ)
184°
Sep first
0.4
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
7.80
Mag sec
11.36
delta mag (ΔM)
3.56
Spectral class
B9 (blue-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-008
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
184.1
Precise sep
0.468
Constellation
Hercules
SAO
85939
HIP
89862
Tycho2
1580-01706-1
HD
168696
BD
BD+21 3388
Distance
418.41
Distance ly
1364.85
last precise pa
184.1
last precise sep
0.468
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18203+2104 HDS2592 1991 1 185 0.4 7.80 11.36 B9 D 182018.19+210425.0
18203+2104 HDS2592 2008 2 184 0.5 7.80 11.36 B9 D 182018.19+210425.0

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