20170+3725 A  1423AB

 
 
20h 17m 00.03s +37 25' 23.8" P.A. 128 sep 4.4 mag 8.11,12.10 Sp WN dist. 172.12 pc (561.46 l.y.)
 
 
Coord 2000
20170+3725
Discov num
A  1423
Comp
AB
Coord arcsec 2000
20 17 00.03 +37 25 23.8
Date first
1906
Date last
2016
Obs
8
Pa first
128
Pa last
128
P.A. Now (θ)
128°
Sep first
4.6
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
8.11
Mag sec
12.10
delta mag (ΔM)
3.99
Spectral class
WN (Wolf-Rayet)
Pri motion ra
-005
Sec motion ra
Pri motion dec
-016
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20170+3725 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20170+3725 CIA 9 Aa1,2 2013 2013 1 305 0.0 7.20 8.00 0.80
Show 20170+3725 HDS2891 Aa,Ab 1991 1991 2 50 0.9 8.11 11.25 3.14
Show 20170+3725 A 1423 AB 1906 2016 8 128 4.4 8.11 12.10 3.99 <===
Quadruple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128.1
Precise sep
4.35
Constellation
Cygnus
SAO
69755
HIP
99982
Tycho2
2684-00857-1
Gaia DR2
46184974464
HD
193077
BD
BD+36 3987
Distance
172.12
Distance ly
561.46
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20170+3725 A 1423 AB 2000 6 128 4.5 8.00 12.10 WN 201700.03+372523.8
20170+3725 A 1423 AB 2016 7 128 4.4 8.11 12.10 WN N 201700.03+372523.8

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