20316+3420 TOK 338

 
 
20h 31m 36.26s +34 19' 49.3" P.A. 2.00 sep 94.2 mag 6.52,17.57 Sp F4V dist. 45.91 pc (149.76 l.y.)
 
 
Coord 2000
20316+3420
Discov num
TOK 338
Comp
Coord arcsec 2000
20 31 36.26 +34 19 49.3
Date first
1980
Date last
2015
Obs
4
Pa first
1
Pa last
2
P.A. Now (θ)
Sep first
85.6
Sep last
94.2
Sep. Now (ρ)
94.2"
Mag pri
6.52
Mag sec
17.57
delta mag (ΔM)
11.05
Spectral class
F4V (yellow-white)
Pri motion ra
-009
Sec motion ra
-011
Pri motion dec
-053
Sec motion dec
-071
Notes
V (Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=0.252 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
1.7
Precise sep
94.165
Constellation
Cygnus
SAO
70153
HIP
101268
Tycho2
2693-01743-1
Gaia DR2
61621397632
HD
195690
BD
BD+33 3938
Distance
45.91
Distance ly
149.76
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20316+3420 TOK 338 1980 1 1 85.6 6.52 17.57 V 203136.26+341949.3
20316+3420 TOK 338 1999 2 1 85.6 6.52 17.57 V 203136.26+341949.3
20316+3420 TOK 338 2010 3 2 93.4 6.52 17.57 F4V V 203136.26+341949.3
20316+3420 TOK 338 2015 4 2 94.2 6.52 17.57 F4V V 203136.26+341949.3

If you need more information about this double, apply for a data request form to the WDS.