21086+3012 STF 2762 AB (V389 Cyg)
21h 08m 38.87s +30° 12' 20.5" P.A. 303.00 sep 3.3 mag 5.70,8.10 Sp B9V dist. 115.74 pc (377.54 l.y.)
| Coord 2000 |
21086+3012 |
|
Discov num |
STF2762 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 08 38.87 +30 12 20.5 |
|
| Date first |
1783 |
|
Date last |
2020 |
|
Obs |
116 |
|
| Pa first |
315 |
|
Pa last |
303.1 |
|
P.A. Now (θ) |
303.1° |
|
| Sep first |
4.0 |
|
Sep last |
3.34 |
|
Sep. Now (ρ) |
3.34" |
|
| Mag pri |
5.70 |
|
Mag sec |
8.10 |
|
delta mag (ΔM) |
2.4 |
|
Spectral class |
B9V (blue-white) |
|
| Pri motion ra |
+032 |
|
Sec motion ra |
+025 |
|
| Pri motion dec |
-023 |
|
Sec motion dec |
-021 |
|
| Notes |
N
(See Notes) |
|
rPM=0.185 (< 0.3, Physical double)
This double is physical.
21086+3012 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
V389 Cyg |
70968 |
21 08 39 +30 12 20 |
STF 2762 AB |
2020 |
116 |
303 |
3.3 |
5.70 |
8.10 |
2.40 |
|
<=== |
| Show |
|
70968 |
21 08 39 +30 12 20 |
STF 2762 AC |
2007 |
18 |
229 |
59.3 |
5.70 |
10.22 |
4.52 |
|
|
| Show |
|
70968 |
21 08 39 +30 12 20 |
STF 2762 AD |
2002 |
7 |
66 |
73.1 |
5.70 |
11.40 |
5.70 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V389 Cyg |
|
Constellation |
Cygnus |
|
SAO |
70968 |
|
HIP |
104371 |
|
| Tycho2 |
2701-03919-1 |
|
Gaia DR2 |
1852355451294756352 |
|
HD |
201433 |
|
HR |
8094 |
|
| GC |
29562 |
|
ADS |
14682 |
|
BD |
BD+29 4324 |
|
Distance |
115.74 |
|
| Distance ly |
377.54 |
|
