18278+2442 STF2320

 
 
18h 27m 45.89s +24 41' 50.8" P.A. 1 sep 0.9 mag 7.14,8.90 Sp B9V dist. 256.41 pc (836.41 l.y.)
 
 
Coord 2000
18278+2442
Discov num
STF2320
Comp
Coord arcsec 2000
18 27 45.89 +24 41 50.8
Date first
1831
Date last
2015
Obs
59
Pa first
11
Pa last
1
P.A. Now (θ)
Sep first
1.8
Sep last
0.9
Sep. Now (ρ)
0.9"
Mag pri
7.14
Mag sec
8.90
delta mag (ΔM)
1.76
Spectral class
B9V (blue-white)
Pri motion ra
+003
Sec motion ra
+003
Pri motion dec
+012
Sec motion dec
+012
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
0.8
Precise sep
0.87
Constellation
Hercules
SAO
86083
HIP
90483
Tycho2
2110-01170-1
HD
170314
BD
BD+24 3425
Distance
256.41
Distance ly
836.41
last precise pa
0.8
last precise sep
0.87
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18278+2442 STF2320 2005 59 359 1.1 7.14 8.90 B9V D 182745.89+244150.8
18278+2442 STF2320 2010 61 358 1.1 7.14 8.90 B9V N D 182745.89+244150.8
18278+2442 STF2320 2011 63 358 1.1 7.14 8.90 B9V N 182745.89+244150.8
18278+2442 STF2320 2013 58 358 1.0 7.14 8.90 B9V N 182745.89+244150.8
18278+2442 STF2320 2015 59 1 0.9 7.14 8.90 B9V N 182745.89+244150.8

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