21218+4309 STT 438 (HD 203578)
21h 21m 45.80s +43° 08' 38.1" P.A. 357.00 sep 2.2 mag 8.27,10.30 Sp A0 dist. 289.86 pc (945.52 l.y.)
| Coord 2000 |
21218+4309 |
|
Discov num |
STT 438 |
|
Comp |
|
|
Coord arcsec 2000 |
21 21 45.80 +43 08 38.1 |
|
| Date first |
1847 |
|
Date last |
2016 |
|
Obs |
20 |
|
| Pa first |
356 |
|
Pa last |
357.1 |
|
P.A. Now (θ) |
357.1° |
|
| Sep first |
2.3 |
|
Sep last |
2.23 |
|
Sep. Now (ρ) |
2.23" |
|
| Mag pri |
8.27 |
|
Mag sec |
10.30 |
|
delta mag (ΔM) |
2.03 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
-011 |
|
Sec motion ra |
|
|
| Pri motion dec |
-026 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203578 |
|
Constellation |
Cygnus |
|
SAO |
50758 |
|
HIP |
105467 |
|
| Tycho2 |
3194-00652-1 |
|
Gaia DR2 |
1970643283037167744 |
|
HD |
203578 |
|
BD |
BD+42 4067 |
|
| Distance |
289.86 |
|
Distance ly |
945.52 |
|
