21091+3844 S   779

 
 
21h 09m 08.32s +38 43' 45.1" P.A. 9 sep 110.5 mag 7.61,9.57 Sp K2 dist. 537.63 pc (1753.75 l.y.)
 
 
Coord 2000
21091+3844
Discov num
S   779
Comp
Coord arcsec 2000
21 09 08.32 +38 43 45.1
Date first
1824
Date last
2015
Obs
23
Pa first
11
Pa last
9
P.A. Now (θ)
Sep first
114.8
Sep last
110.5
Sep. Now (ρ)
110.5"
Mag pri
7.61
Mag sec
9.57
delta mag (ΔM)
1.96
Spectral class
K2 (yellow-orange)
Pri motion ra
+002
Sec motion ra
-015
Pri motion dec
-003
Sec motion dec
-021
Notes
N (See Notes)
rPM=0.959
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
8.9
Precise sep
110.484
Constellation
Cygnus
SAO
70977
HIP
104417
Tycho2
3168-00056-1
Gaia DR2
13630353024
HD
201561
BD
BD+38 4362
Distance
537.63
Distance ly
1753.75
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21091+3844 S 779 2002 17 11 111.6 7.61 9.57 K2 N D 210908.32+384345.1
21091+3844 S 779 2012 19 9 110.6 7.61 9.57 K2 N D 210908.32+384345.1
21091+3844 S 779 2015 21 9 110.5 7.61 9.57 K2 N 210908.32+384345.1

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