21238+4710 A 765 AB (HD 203938)
21h 23m 50.18s +47° 09' 52.4" P.A. 22.00 sep 0.6 mag 9.02,7.33 Sp B0V dist. 1041.67 pc (3397.93 l.y.)
| Coord 2000 |
21238+4710 |
|
Discov num |
A 765 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 23 50.18 +47 09 52.4 |
|
| Date first |
1904 |
|
Date last |
2016 |
|
Obs |
24 |
|
| Pa first |
42 |
|
Pa last |
21.6 |
|
P.A. Now (θ) |
21.6° |
|
| Sep first |
0.3 |
|
Sep last |
0.55 |
|
Sep. Now (ρ) |
0.55" |
|
| Mag pri |
9.02 |
|
Mag sec |
7.33 |
|
delta mag (ΔM) |
1.69 |
|
Spectral class |
B0V (blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+000 |
|
| Pri motion dec |
-006 |
|
Sec motion dec |
-006 |
|
| Notes |
|
|
Nature of this double is uncertain.
21238+4710 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 203938 |
50792 |
21 23 50 +47 09 52 |
A 765 AB |
2016 |
24 |
22 |
0.6 |
9.02 |
7.33 |
1.69 |
|
<=== |
| Show |
|
50792 |
21 23 50 +47 09 52 |
A 765 AB,C |
2003 |
5 |
22 |
26.4 |
7.12 |
14.00 |
6.88 |
|
|
| Show |
|
|
21 23 51 +47 10 17 |
A 765 CD |
2015 |
9 |
345 |
5.9 |
14.00 |
14.50 |
0.50 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203938 |
|
Constellation |
Cygnus |
|
SAO |
50792 |
|
HIP |
105640 |
|
| Tycho2 |
3594-01695-1 |
|
Gaia DR2 |
1972509777052328064 |
|
HD |
203938 |
|
BD |
BD+46 3294 |
|
| Distance |
1041.67 |
|
Distance ly |
3397.93 |
|
