20169+3307 OSO 122AC

 
 
20h 16m 53.68s +33 06' 31.1" P.A. 271 sep 20.9 mag 9.34,17.21 Sp G0 dist. 77.52 pc (252.87 l.y.)
 
 
Coord 2000
20169+3307
Discov num
OSO 122
Comp
AC
Coord arcsec 2000
20 16 53.68 +33 06 31.1
Date first
1994
Date last
2002
Obs
3
Pa first
266
Pa last
271
P.A. Now (θ)
271°
Sep first
21.8
Sep last
20.9
Sep. Now (ρ)
20.9"
Mag pri
9.34
Mag sec
17.21
delta mag (ΔM)
7.87
Spectral class
G0 (yellow)
Pri motion ra
-129
Sec motion ra
Pri motion dec
-259
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20169+3307 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20169+3307 OSO 122 AB 1994 1994 1 11 16.2 9.34 17.30 7.96
Show 20169+3307 OSO 122 AC 1994 2002 3 271 20.9 9.34 17.21 7.87 <===
Show 20169+3307 OSO 122 AD 1994 1999 2 117 22.5 9.34 17.97 8.63
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
270.7
Precise sep
20.881
Constellation
Cygnus
SAO
69746
HIP
99963
Tycho2
2676-00203-1
Gaia DR2
74467015424
HD
228710
BD
BD+32 3767
Distance
77.52
Distance ly
252.87
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20169+3307 OSO 122 AC 1999 2 268 21.2 9.26 16.10 N D 201653.68+330631.1
20169+3307 OSO 122 AC 2002 3 271 20.9 9.34 17.21 N D 201653.68+330631.1

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