20339+3515 BU 1490AC

 
 
20h 33m 54.19s +35 15' 03.1" P.A. 210.00 sep 115.1 mag 4.82,11.87 Sp K2Ib+B3V dist. 847.46 pc (2764.41 l.y.)
 
 
Coord 2000
20339+3515
Discov num
BU 1490
Comp
AC
Coord arcsec 2000
20 33 54.19 +35 15 03.1
Date first
1880
Date last
2013
Obs
12
Pa first
190
Pa last
210
P.A. Now (θ)
210°
Sep first
117.6
Sep last
115.1
Sep. Now (ρ)
115.1"
Mag pri
4.82
Mag sec
11.87
delta mag (ΔM)
7.05
Spectral class
K2Ib+B3V (yellow-orange/blue-white)
Pri motion ra
+002
Sec motion ra
-022
Pri motion dec
-005
Sec motion dec
-035
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=0.929
This double is not physical.
 
 
20339+3515 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 47 Cyg 70203 20339+3515 WRH 34 AB 1949 1998 27 278 0.3 4.84 7.30 2.46
Show 70203 20339+3515 BU 1490 AC 1880 2013 12 210 115.1 4.82 11.87 7.05 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
210.2
Precise sep
115.1
Constellation
Cygnus
SAO
70203
HIP
101474
Tycho2
2694-02168-1
Gaia DR2
31818264064
HD
196093
HR
7866
GC
28630
BD
BD+34 4079
Flamsteed
47 Cygni
Flamsteed name
47 Cyg
Distance
847.46
Distance ly
2764.41
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20339+3515 BU 1490 AC 1999 10 210 115.9 4.82 11.87 D 203354.19+351503.1
20339+3515 BU 1490 AC 2002 11 210 115.1 4.82 11.87 N D 203354.19+351503.1
20339+3515 BU 1490 AC 2013 12 210 115.1 4.82 11.87 K2Ib+B3V N 203354.19+351503.1

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