20175+2909 BU  441AB

 
 
20h 17m 31.54s +29 08' 51.0" P.A. 64.00 sep 6.2 mag 6.37,10.50 Sp G8III dist. 127.06 pc (414.47 l.y.)
 
 
Coord 2000
20175+2909
Discov num
BU  441
Comp
AB
Coord arcsec 2000
20 17 31.54 +29 08 51.0
Date first
1876
Date last
2015
Obs
26
Pa first
65
Pa last
64
P.A. Now (θ)
64°
Sep first
5.9
Sep last
6.2
Sep. Now (ρ)
6.2"
Mag pri
6.37
Mag sec
10.50
delta mag (ΔM)
4.13
Spectral class
G8III (yellow)
Pri motion ra
-008
Sec motion ra
Pri motion dec
+016
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20175+2909 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 88473 20175+2909 POP1229 Aa,Ab 1989 1989 2 217 0.4 6.40
Show 88473 20175+2909 BU 441 AB 1876 2015 26 64 6.2 6.37 10.50 4.13 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
64.2
Precise sep
6.225
Constellation
Vulpecula
SAO
88473
HIP
100018
Tycho2
2167-01351-1
Gaia DR2
72612095360
HD
193094
HR
7760
BD
BD+28 3695
Distance
127.06
Distance ly
414.47
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20175+2909 BU 441 AB 1958 22 67 5.8 6.40 10.90 G8III D 201731.54+290851.0
20175+2909 BU 441 AB 2008 23 64 6.1 6.40 10.90 G8III D 201731.54+290851.0
20175+2909 BU 441 AB 2015 24 64 6.2 6.37 10.50 G8III 201731.54+290851.0

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