21520+5548 STF 2840 AC
21h 52m 01.02s +55° 47' 48.3" P.A. 345.00 sep 54.9 mag 5.64,13.10 Sp B6IV-V dist. 460.83 pc (1503.23 l.y.)
| Coord 2000 |
21520+5548 |
|
Discov num |
STF2840 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 52 01.02 +55 47 48.3 |
|
| Date first |
1912 |
|
Date last |
2015 |
|
Obs |
5 |
|
| Pa first |
348 |
|
Pa last |
345.2 |
|
P.A. Now (θ) |
345.2° |
|
| Sep first |
55.2 |
|
Sep last |
54.891 |
|
Sep. Now (ρ) |
54.891" |
|
| Mag pri |
5.64 |
|
Mag sec |
13.10 |
|
delta mag (ΔM) |
7.46 |
|
Spectral class |
B6IV-V (blue-white) |
|
| Pri motion ra |
+019 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
21520+5548 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
NSV13909 |
33819 |
21 52 01 +55 47 48 |
STF 2840 AB |
2018 |
111 |
197 |
18.1 |
5.64 |
6.42 |
0.78 |
|
|
| Show |
|
33819 |
21 52 01 +55 47 48 |
STF 2840 AC |
2015 |
5 |
345 |
54.9 |
5.64 |
13.10 |
7.46 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV13909 |
|
Constellation |
Cepheus |
|
SAO |
33819 |
|
HIP |
107930 |
|
| Tycho2 |
3972-02736-1 |
|
Gaia DR2 |
2174870184851810048 |
|
HD |
208095 |
|
HR |
8357 |
|
| ADS |
15405 |
|
BD |
BD+55 2639 |
|
Distance |
460.83 |
|
Distance ly |
1503.23 |
|
