21238+3721 STFA 55AF

 
 
21h 23m 48.39s +37 21' 05.4" P.A. 201 sep 22.8 mag 6.61,14.80 Sp K5 dist. 281.69 pc (918.87 l.y.)
 
 
Coord 2000
21238+3721
Discov num
STFA 55
Comp
AF
Coord arcsec 2000
21 23 48.39 +37 21 05.4
Date first
2002
Date last
2015
Obs
5
Pa first
202
Pa last
201
P.A. Now (θ)
201°
Sep first
22.2
Sep last
22.8
Sep. Now (ρ)
22.8"
Mag pri
6.61
Mag sec
14.80
delta mag (ΔM)
8.19
Spectral class
K5 (yellow-orange)
Pri motion ra
-006
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
21238+3721 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 71280 21238+3721 STFA 55 AB 1835 2012 30 304 364.1 6.61 6.61 0.00
Show 71280 21238+3721 STFA 55 AC 1880 2015 8 154 178.3 6.61 11.08 4.47
Show 71280 21238+3721 STFA 55 AF 2002 2015 5 201 22.8 6.61 14.80 8.19 <===
Show 71280 21238+3721 STFA 55 CD 1909 2015 5 183 12.8 11.08 14.80 3.72
Show 71280 21238+3721 STFA 55 CE 1909 2015 5 320 17.7 11.08 13.70 2.62
Sextuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
201.4
Precise sep
22.849
Constellation
Cygnus
SAO
71280
HIP
105637
Tycho2
2715-03976-1
HD
203857
HR
8193
BD
BD+36 4543
Distance
281.69
Distance ly
918.87
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21238+3721 STFA 55 AF 2012 4 202 23.4 6.61 14.80 N 212348.39+372105.4
21238+3721 STFA 55 AF 2015 5 201 22.8 6.61 14.80 K5 N 212348.39+372105.4

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