21478+6203 HU 971 AB,C (HD 207577)
21h 47m 45.39s +62° 03' 24.3" P.A. 285.00 sep 9.0 mag 8.54,12.20 Sp A3 dist. 333.33 pc (1087.32 l.y.)
| Coord 2000 |
21478+6203 |
|
Discov num |
HU 971 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
21 47 45.39 +62 03 24.3 |
|
| Date first |
1904 |
|
Date last |
2014 |
|
Obs |
8 |
|
| Pa first |
286 |
|
Pa last |
284.7 |
|
P.A. Now (θ) |
284.7° |
|
| Sep first |
9.1 |
|
Sep last |
9.048 |
|
Sep. Now (ρ) |
9.048" |
|
| Mag pri |
8.54 |
|
Mag sec |
12.20 |
|
delta mag (ΔM) |
3.66 |
|
Spectral class |
A3 (white) |
|
| Pri motion ra |
+013 |
|
Sec motion ra |
|
|
| Pri motion dec |
+008 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
21478+6203 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
19649 |
21 47 45 +62 03 24 |
HU 971 AB |
2010 |
17 |
207 |
0.3 |
8.99 |
9.73 |
0.74 |
|
|
| Show |
HD 207577 |
19649 |
21 47 45 +62 03 24 |
HU 971 AB,C |
2014 |
8 |
285 |
9.0 |
8.54 |
12.20 |
3.66 |
|
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 207577 |
|
Constellation |
Cepheus |
|
SAO |
19649 |
|
HIP |
107611 |
|
| Tycho2 |
4266-03259-1 |
|
Gaia DR2 |
2216335001707245952 |
|
HD |
207577 |
|
BD |
BD+61 2199 |
|
| Distance |
333.33 |
|
Distance ly |
1087.32 |
|
