21241+2519 BU 447 AB (HD 203858)
21h 24m 07.42s +25° 18' 44.6" P.A. 309.00 sep 9.4 mag 6.20,12.20 Sp A2V dist. 174.83 pc (570.3 l.y.)
| Coord 2000 |
21241+2519 |
|
Discov num |
BU 447 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 24 07.42 +25 18 44.6 |
|
| Date first |
1878 |
|
Date last |
2013 |
|
Obs |
16 |
|
| Pa first |
330 |
|
Pa last |
309 |
|
P.A. Now (θ) |
309° |
|
| Sep first |
8.5 |
|
Sep last |
9.4 |
|
Sep. Now (ρ) |
9.4" |
|
| Mag pri |
6.20 |
|
Mag sec |
12.20 |
|
delta mag (ΔM) |
6 |
|
Spectral class |
A2V (white) |
|
| Pri motion ra |
+040 |
|
Sec motion ra |
|
|
| Pri motion dec |
+022 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
21241+2519 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 203858 |
89680 |
21 24 07 +25 18 45 |
BU 447 AB |
2013 |
16 |
309 |
9.4 |
6.20 |
12.20 |
6.00 |
|
<=== |
| Show |
|
89680 |
21 24 07 +25 18 45 |
BU 447 AC |
2015 |
6 |
193 |
58.3 |
6.20 |
11.70 |
5.50 |
|
|
| Show |
|
89680 |
21 24 07 +25 18 45 |
BU 447 AD |
2015 |
7 |
84 |
45.1 |
6.20 |
11.80 |
5.60 |
|
|
| Show |
|
89680 |
21 24 07 +25 18 45 |
BU 447 AE |
2015 |
10 |
116 |
65.3 |
6.20 |
10.96 |
4.76 |
|
|
| Show |
|
89680 |
21 24 07 +25 18 45 |
BU 447 AF |
2015 |
7 |
218 |
84.3 |
6.20 |
10.70 |
4.50 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203858 |
|
Constellation |
Vulpecula |
|
SAO |
89680 |
|
HIP |
105660 |
|
| Tycho2 |
2191-02228-1 |
|
Gaia DR2 |
1846525776219240320 |
|
HD |
203858 |
|
HR |
8194 |
|
| GC |
29968 |
|
ADS |
14943 |
|
BD |
BD+24 4394 |
|
Distance |
174.83 |
|
| Distance ly |
570.3 |
|
