21561+2420 STT 454 AB (HD 208503)
21h 56m 04.91s +24° 20' 23.6" P.A. 278.00 sep 7.4 mag 7.97,10.04 Sp A0 dist. 271.74 pc (886.42 l.y.)
| Coord 2000 |
21561+2420 |
|
Discov num |
STT 454 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 56 04.91 +24 20 23.6 |
|
| Date first |
1843 |
|
Date last |
2018 |
|
Obs |
40 |
|
| Pa first |
278 |
|
Pa last |
278 |
|
P.A. Now (θ) |
278° |
|
| Sep first |
6.8 |
|
Sep last |
7.429 |
|
Sep. Now (ρ) |
7.429" |
|
| Mag pri |
7.97 |
|
Mag sec |
10.04 |
|
delta mag (ΔM) |
2.07 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+012 |
|
Sec motion ra |
+007 |
|
| Pri motion dec |
-012 |
|
Sec motion dec |
-013 |
|
| Notes |
|
|
rPM=0.3
Nature of this double is uncertain.
21561+2420 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 208503 |
|
21 56 05 +24 20 24 |
STT 454 AB |
2018 |
40 |
278 |
7.4 |
7.97 |
10.04 |
2.07 |
|
<=== |
| Show |
|
|
21 56 05 +24 20 24 |
STT 454 AC |
2015 |
12 |
264 |
43.0 |
7.97 |
12.08 |
4.11 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 208503 |
|
Constellation |
Pegasus |
|
HIP |
108270 |
|
Tycho2 |
2203-01481-1 |
|
| Gaia DR2 |
1795239709175455488 |
|
HD |
208503 |
|
ADS |
15461 |
|
BD |
BD+23 4428 |
|
| Distance |
271.74 |
|
Distance ly |
886.42 |
|
