21080+0539 BU 9018 AC (HD 201220)
21h 07m 59.02s +05° 39' 06.0" P.A. 252.00 sep 139.3 mag 8.30,12.49 Sp K0
| Coord 2000 |
21080+0539 |
|
Discov num |
BU 9018 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 07 59.02 +05 39 06.0 |
|
| Date first |
1901 |
|
Date last |
2015 |
|
Obs |
7 |
|
| Pa first |
269 |
|
Pa last |
251.5 |
|
P.A. Now (θ) |
251.5° |
|
| Sep first |
148.0 |
|
Sep last |
139.326 |
|
Sep. Now (ρ) |
139.326" |
|
| Mag pri |
8.30 |
|
Mag sec |
12.49 |
|
delta mag (ΔM) |
4.19 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-022 |
|
Sec motion ra |
+007 |
|
| Pri motion dec |
-117 |
|
Sec motion dec |
-010 |
|
| Notes |
|
|
rPM=0.931
This double is not physical.
21080+0539 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
126561 |
21 07 59 +05 39 06 |
HJ 3011 AB |
2014 |
7 |
273 |
10.6 |
8.30 |
14.50 |
6.20 |
|
|
| Show |
HD 201220 |
126561 |
21 07 59 +05 39 06 |
BU 9018 AC |
2015 |
7 |
252 |
139.3 |
8.30 |
12.49 |
4.19 |
|
<=== |
| Show |
|
|
21 07 50 +05 38 20 |
BU 9018 CD |
2016 |
8 |
340 |
6.0 |
13.00 |
13.30 |
0.30 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 201220 |
|
Constellation |
Equuleus |
|
SAO |
126561 |
|
Tycho2 |
0539-02130-1 |
|
| Gaia DR2 |
1733624555023358976 |
|
HD |
201220 |
|
