18208+2732 BU  640

 
 
18h 20m 49.23s +27 31' 48.3" P.A. 322 sep 0.7 mag 7.00,12.00 Sp G1V dist. 28.55 pc (93.13 l.y.)
 
 
Coord 2000
18208+2732
Discov num
BU  640
Comp
Coord arcsec 2000
18 20 49.23 +27 31 48.3
Date first
1878
Date last
2008
Obs
22
Pa first
350
Pa last
322
P.A. Now (θ)
322°
Sep first
2.4
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
7.00
Mag sec
12.00
delta mag (ΔM)
5
Spectral class
G1V (yellow)
Pri motion ra
+058
Sec motion ra
Pri motion dec
+083
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
321.9
Precise sep
0.731
Constellation
Hercules
SAO
85952
HIP
89912
Tycho2
2101-00082-1
HD
168874
BD
BD+27 3003
Distance
28.55
Distance ly
93.13
last precise pa
321.9
last precise sep
0.731
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18208+2732 BU 640 1970 20 315 1.5 7.00 12.00 G1V 182049.23+273148.3
18208+2732 BU 640 2008 22 322 0.7 7.00 12.00 G1V N 182049.23+273148.3

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