18445+3400 STTA172

 
 
18h 44m 30.74s +33 59' 46.1" P.A. 6 sep 61.2 mag 7.91,8.66 Sp F8 dist. 53.94 pc (175.95 l.y.)
 
 
Coord 2000
18445+3400
Discov num
STTA172
Comp
Coord arcsec 2000
18 44 30.74 +33 59 46.1
Date first
1875
Date last
2012
Obs
24
Pa first
6
Pa last
6
P.A. Now (θ)
Sep first
65.5
Sep last
61.2
Sep. Now (ρ)
61.2"
Mag pri
7.91
Mag sec
8.66
delta mag (ΔM)
0.75
Spectral class
F8 (yellow-white)
Pri motion ra
+013
Sec motion ra
+015
Pri motion dec
-015
Sec motion dec
-017
Notes
N (See Notes)
rPM=0.125 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
6
Precise sep
61.2
Constellation
Lyra
SAO
67311
HIP
91940
Tycho2
2645-00314-1
HD
173548
BD
BD+33 3190
Distance
53.94
Distance ly
175.95
last precise pa
6
last precise sep
61.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18445+3400 STTA172 2003 22 5 65.2 7.91 8.66 F8 N D 184430.74+335946.1
18445+3400 STTA172 2012 24 6 61.2 7.91 8.66 F8 N D 184430.74+335946.1

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