20310+3656 AC   18AB (44 Cyg)

 
 
20h 30m 59.23s +36 56' 09.1" P.A. 158 sep 2.2 mag 6.32,10.12 Sp F5Iab dist. 1041.67 pc (3397.93 l.y.)
 
 
Coord 2000
20310+3656
Discov num
AC   18
Comp
AB
Coord arcsec 2000
20 30 59.23 +36 56 09.1
Date first
1859
Date last
1991
Obs
18
Pa first
155
Pa last
158
P.A. Now (θ)
158°
Sep first
2.5
Sep last
2.2
Sep. Now (ρ)
2.2"
Mag pri
6.32
Mag sec
10.12
delta mag (ΔM)
3.8
Spectral class
F5Iab (yellow-white)
Pri motion ra
-001
Sec motion ra
+000
Pri motion dec
-002
Sec motion dec
-004
Notes
N (See Notes)
rPM=0.559
Nature of this double is uncertain.
 
 
20310+3656 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 44 Cyg 70135 20310+3656 AC 18 AB 1859 1991 18 158 2.2 6.32 10.12 3.80 <===
Show 20310+3656 KUI 98 AC 1935 2015 6 76 16.8 6.32 12.80 6.48
Show 20310+3656 AC 18 AD 1913 2015 4 165 63.1 6.32 12.30 5.98
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
157.8
Precise sep
2.16
Name
44 Cyg
Constellation
Cygnus
SAO
70135
HIP
101214
Tycho2
2697-01634-1
Gaia DR2
76738256384
HD
195593
HR
7847
GC
28551
BD
BD+36 4105
Flamsteed
44 Cygni
Flamsteed name
44 Cyg
Distance
1041.67
Distance ly
3397.93
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20310+3656 AC 18 AB 1991 18 158 2.2 6.32 10.12 F5Iab N D 203059.23+365609.1

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