18545+2037 STF2415

 
 
18h 54m 32.84s +20 36' 55.1" P.A. 290 sep 2 mag 7.07,8.73 Sp A0IV dist. 194.93 pc (635.86 l.y.)
 
 
Coord 2000
18545+2037
Discov num
STF2415
Comp
Coord arcsec 2000
18 54 32.84 +20 36 55.1
Date first
1831
Date last
2015
Obs
74
Pa first
299
Pa last
290
P.A. Now (θ)
290°
Sep first
2.0
Sep last
2.0
Sep. Now (ρ)
2"
Mag pri
7.07
Mag sec
8.73
delta mag (ΔM)
1.66
Spectral class
A0IV (white)
Pri motion ra
+004
Sec motion ra
+004
Pri motion dec
-002
Sec motion dec
-002
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
289.8
Precise sep
1.977
Constellation
Hercules
SAO
86563
HIP
92800
Tycho2
1592-00227-1
HD
175427
BD
BD+20 3985
Distance
194.93
Distance ly
635.86
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18545+2037 STF2415 2004 67 290 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2007 70 290 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2010 72 289 1.9 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2011 73 289 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2013 73 287 1.9 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2015 74 290 2.0 7.07 8.73 A0IV 185432.84+203655.1

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