21426+4103 BU 688 AB,C (HD 206656)
21h 42m 33.41s +41° 02' 51.0" P.A. 30.00 sep 27.0 mag 7.63,11.90 Sp F2V dist. 120.48 pc (393.01 l.y.)
Coord 2000 |
21426+4103 |
|
Discov num |
BU 688 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
21 42 33.41 +41 02 51.0 |
|
Date first |
1914 |
|
Date last |
2014 |
|
Obs |
6 |
|
Pa first |
35 |
|
Pa last |
29.5 |
|
P.A. Now (θ) |
29.5° |
|
Sep first |
29.3 |
|
Sep last |
27.041 |
|
Sep. Now (ρ) |
27.041" |
|
Mag pri |
7.63 |
|
Mag sec |
11.90 |
|
delta mag (ΔM) |
4.27 |
|
Spectral class |
F2V (yellow-white) |
|
Pri motion ra |
+026 |
|
Sec motion ra |
-002 |
|
Pri motion dec |
-001 |
|
Sec motion dec |
-008 |
|
Notes |
N
S
(See Notes, Parallax indidates non-physical) |
|
rPM=1.109
This double is not physical.
21426+4103 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
51212 |
21 42 33 +41 02 51 |
BU 688 AB |
2018 |
80 |
198 |
0.4 |
8.10 |
8.62 |
0.52 |
Y |
|
Show |
HD 206656 |
51212 |
21 42 33 +41 02 51 |
BU 688 AB,C |
2014 |
6 |
30 |
27.0 |
7.63 |
11.90 |
4.27 |
|
<=== |
Show |
|
51212 |
21 42 33 +41 02 51 |
FOX 9036 AB,D |
2014 |
5 |
306 |
46.7 |
8.85 |
13.78 |
4.93 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 206656 |
|
Constellation |
Cygnus |
|
SAO |
51212 |
|
HIP |
107177 |
|
Tycho2 |
3188-00957-1 |
|
HD |
206656 |
|
BD |
BD+40 4617 |
|
Distance |
120.48 |
|
Distance ly |
393.01 |
|