21306+4213 STT 441 AB (HD 204919)
21h 30m 35.00s +42° 12' 40.4" P.A. 328.00 sep 6.1 mag 8.27,11.26 Sp A7V dist. 173.91 pc (567.29 l.y.)
| Coord 2000 |
21306+4213 |
|
Discov num |
STT 441 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 30 35.00 +42 12 40.4 |
|
| Date first |
1847 |
|
Date last |
2015 |
|
Obs |
21 |
|
| Pa first |
322 |
|
Pa last |
328.2 |
|
P.A. Now (θ) |
328.2° |
|
| Sep first |
7.0 |
|
Sep last |
6.1 |
|
Sep. Now (ρ) |
6.1" |
|
| Mag pri |
8.27 |
|
Mag sec |
11.26 |
|
delta mag (ΔM) |
2.99 |
|
Spectral class |
A7V (white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
+002 |
|
| Pri motion dec |
-009 |
|
Sec motion dec |
-005 |
|
| Notes |
|
|
rPM=0.552
Nature of this double is uncertain.
21306+4213 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 204919 |
50950 |
21 30 35 +42 12 40 |
STT 441 AB |
2015 |
21 |
328 |
6.1 |
8.27 |
11.26 |
2.99 |
|
<=== |
| Show |
|
50950 |
21 30 35 +42 12 40 |
FYM 336 AC |
2015 |
7 |
123 |
9.5 |
8.27 |
14.90 |
6.63 |
|
|
| Show |
|
50950 |
21 30 35 +42 12 40 |
FYM 336 AD |
2015 |
7 |
280 |
19.4 |
8.27 |
14.70 |
6.43 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 204919 |
|
Constellation |
Cygnus |
|
SAO |
50950 |
|
HIP |
106191 |
|
| Tycho2 |
3191-01712-1 |
|
Gaia DR2 |
1967214632123902976 |
|
HD |
204919 |
|
BD |
BD+41 4169 |
|
| Distance |
173.91 |
|
Distance ly |
567.29 |
|
