21238+3721 STFA 55 AB (HD 203857)
21h 23m 48.39s +37° 21' 05.4" P.A. 304.00 sep 364.1 mag 6.61,6.61 Sp K5 dist. 281.69 pc (918.87 l.y.)
| Coord 2000 |
21238+3721 |
|
Discov num |
STFA 55 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 23 48.39 +37 21 05.4 |
|
| Date first |
1835 |
|
Date last |
2012 |
|
Obs |
30 |
|
| Pa first |
303 |
|
Pa last |
304 |
|
P.A. Now (θ) |
304° |
|
| Sep first |
365.3 |
|
Sep last |
364.1 |
|
Sep. Now (ρ) |
364.1" |
|
| Mag pri |
6.61 |
|
Mag sec |
6.61 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
K5 (yellow-orange) |
|
| Pri motion ra |
-006 |
|
Sec motion ra |
+052 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
+025 |
|
| Notes |
N
(See Notes) |
|
rPM=1.148
This double is not physical.
21238+3721 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 203857 |
71280 |
21 23 48 +37 21 05 |
STFA 55 AB |
2012 |
30 |
304 |
364.1 |
6.61 |
6.61 |
0.00 |
|
<=== |
| Show |
|
71280 |
21 23 48 +37 21 05 |
STFA 55 AC |
2015 |
8 |
154 |
178.3 |
6.61 |
11.08 |
4.47 |
|
|
| Show |
|
71280 |
21 23 48 +37 21 05 |
STFA 55 AF |
2015 |
5 |
201 |
22.8 |
6.61 |
14.80 |
8.19 |
|
|
| Show |
|
|
21 23 55 +37 18 25 |
STFA 55 CD |
2015 |
7 |
183 |
12.8 |
11.08 |
14.80 |
3.72 |
|
|
| Show |
|
|
21 23 55 +37 18 25 |
STFA 55 CE |
2015 |
7 |
320 |
17.7 |
11.08 |
13.70 |
2.62 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203857 |
|
Constellation |
Cygnus |
|
SAO |
71280 |
|
HIP |
105637 |
|
| Tycho2 |
2715-03976-1 |
|
Gaia DR2 |
1963812021591567872 |
|
HD |
203857 |
|
HR |
8193 |
|
| GC |
29966 |
|
BD |
BD+36 4543 |
|
Distance |
281.69 |
|
Distance ly |
918.87 |
|
