21390+5729 STF 2816 AD
21h 38m 57.61s +57° 29' 20.5" P.A. 339.00 sep 20.6 mag 5.73,7.53 Sp O6V dist. 606.06 pc (1976.97 l.y.)
| Coord 2000 |
21390+5729 |
|
Discov num |
STF2816 |
|
Comp |
AD |
|
Coord arcsec 2000 |
21 38 57.61 +57 29 20.5 |
|
| Date first |
1782 |
|
Date last |
2018 |
|
Obs |
110 |
|
| Pa first |
344 |
|
Pa last |
338.7 |
|
P.A. Now (θ) |
338.7° |
|
| Sep first |
18.6 |
|
Sep last |
20.6 |
|
Sep. Now (ρ) |
20.6" |
|
| Mag pri |
5.73 |
|
Mag sec |
7.53 |
|
delta mag (ΔM) |
1.8 |
|
Spectral class |
O6V (blue) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-005 |
|
Sec motion dec |
-004 |
|
| Notes |
N
(See Notes) |
|
rPM=0.186 (< 0.3, Physical double)
This double is physical.
21390+5729 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
33626 |
21 38 58 +57 29 20 |
MIU 2 Aa,Ab |
2018 |
16 |
196 |
0.1 |
5.73 |
|
|
|
|
| Show |
|
33626 |
21 38 58 +57 29 20 |
BU 1143 AB |
2018 |
9 |
319 |
1.8 |
5.73 |
13.30 |
7.57 |
|
|
| Show |
HD 206267 |
33626 |
21 38 58 +57 29 20 |
STF 2816 AC |
2018 |
111 |
120 |
11.8 |
5.73 |
7.48 |
1.75 |
|
|
| Show |
|
33626 |
21 38 58 +57 29 20 |
STF 2816 AD |
2018 |
110 |
339 |
20.6 |
5.73 |
7.53 |
1.80 |
|
<=== |
| Show |
|
|
21 38 59 +57 29 15 |
GUI 36 CD |
2018 |
81 |
324 |
30.6 |
7.48 |
7.53 |
0.05 |
|
|
| Show |
|
|
21 38 57 +57 29 39 |
FLE 3 DE |
2015 |
8 |
351 |
55.2 |
7.53 |
13.19 |
5.66 |
|
|
Sextuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
SAO |
33626 |
|
HIP |
106886 |
|
Tycho2 |
3975-01822-1 |
|
| Gaia DR2 |
2178396937123250432 |
|
HD |
206267 |
|
HR |
8281 |
|
ADS |
15184 |
|
| BD |
BD+56 2617 |
|
FK5 |
813 |
|
Distance |
606.06 |
|
Distance ly |
1976.97 |
|
