21060+5422 A 1691 Aa,Ab
21h 06m 00.69s +54° 21' 54.5" P.A. 201.00 sep 0.4 mag 9.20,13.20 Sp F8
| Coord 2000 |
21060+5422 |
|
Discov num |
A 1691 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
21 06 00.69 +54 21 54.5 |
|
| Date first |
1907 |
|
Date last |
2010 |
|
Obs |
7 |
|
| Pa first |
309 |
|
Pa last |
201.2 |
|
P.A. Now (θ) |
201.2° |
|
| Sep first |
0.8 |
|
Sep last |
0.443 |
|
Sep. Now (ρ) |
0.443" |
|
| Mag pri |
9.20 |
|
Mag sec |
13.20 |
|
delta mag (ΔM) |
4 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
|
|
| Pri motion dec |
+071 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
21060+5422 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
33131 |
21 06 01 +54 21 54 |
A 1691 Aa,Ab |
2010 |
7 |
201 |
0.4 |
9.20 |
13.20 |
4.00 |
|
<=== |
| Show |
HD 235439 |
33131 |
21 06 01 +54 21 54 |
HJL 1105 AB |
2015 |
14 |
346 |
172.7 |
9.20 |
9.30 |
0.10 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
33131 |
|
Tycho2 |
3952-00310-1 |
|
Gaia DR2 |
2176696095704039552 |
|
| HD |
235440 |
|
