21001+4841 BU 1210 AB (HD 200177)
21h 00m 06.61s +48° 40' 45.9" P.A. 118.00 sep 2.4 mag 7.34,12.20 Sp B9p dist. 158.98 pc (518.59 l.y.)
| Coord 2000 |
21001+4841 |
|
Discov num |
BU 1210 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 00 06.61 +48 40 45.9 |
|
| Date first |
1890 |
|
Date last |
2003 |
|
Obs |
8 |
|
| Pa first |
120 |
|
Pa last |
117.5 |
|
P.A. Now (θ) |
117.5° |
|
| Sep first |
2.3 |
|
Sep last |
2.35 |
|
Sep. Now (ρ) |
2.35" |
|
| Mag pri |
7.34 |
|
Mag sec |
12.20 |
|
delta mag (ΔM) |
4.86 |
|
Spectral class |
B9p (blue-white) |
|
| Pri motion ra |
+013 |
|
Sec motion ra |
|
|
| Pri motion dec |
+003 |
|
Sec motion dec |
|
|
| Notes |
W
|
|
Nature of this double is uncertain.
21001+4841 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 200177 |
50340 |
21 00 07 +48 40 46 |
BU 1210 AB |
2003 |
8 |
118 |
2.4 |
7.34 |
12.20 |
4.86 |
|
<=== |
| Show |
|
50340 |
21 00 07 +48 40 46 |
STT 425 AC |
2016 |
20 |
27 |
18.2 |
7.34 |
10.80 |
3.46 |
|
|
| Show |
|
50340 |
21 00 07 +48 40 46 |
STT 425 AE |
2016 |
12 |
15 |
45.4 |
7.34 |
10.61 |
3.27 |
|
|
| Show |
|
|
21 00 07 +48 41 02 |
STT 425 CD |
2016 |
16 |
132 |
4.3 |
10.80 |
12.30 |
1.50 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200177 |
|
Constellation |
Cygnus |
|
SAO |
50340 |
|
HIP |
103658 |
|
| Tycho2 |
3592-01443-1 |
|
Gaia DR2 |
2168511429924111360 |
|
HD |
200177 |
|
GC |
29339 |
|
| BD |
BD+48 3260 |
|
Distance |
158.98 |
|
Distance ly |
518.59 |
|
