21009+4730 BU 1290 AC
21h 00m 56.09s +47° 29' 37.3" P.A. 266.00 sep 3.5 mag 10.09,14.00
| Coord 2000 |
21009+4730 |
|
Discov num |
BU 1290 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 00 56.09 +47 29 37.3 |
|
| Date first |
1898 |
|
Date last |
2016 |
|
Obs |
3 |
|
| Pa first |
271 |
|
Pa last |
266.3 |
|
P.A. Now (θ) |
266.3° |
|
| Sep first |
3.1 |
|
Sep last |
3.524 |
|
Sep. Now (ρ) |
3.524" |
|
| Mag pri |
10.09 |
|
Mag sec |
14.00 |
|
delta mag (ΔM) |
3.91 |
|
Spectral class |
|
|
| Pri motion ra |
+013 |
|
Sec motion ra |
|
|
| Pri motion dec |
+013 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
21009+4730 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 00 56 +47 29 37 |
BU 1290 AB |
2019 |
20 |
35 |
9.3 |
10.09 |
10.65 |
0.56 |
|
|
| Show |
|
|
21 00 56 +47 29 37 |
BU 1290 AC |
2016 |
3 |
266 |
3.5 |
10.09 |
14.00 |
3.91 |
|
<=== |
| Show |
|
|
21 00 57 +47 29 44 |
BU 1290 BD |
2016 |
4 |
22 |
2.5 |
10.65 |
15.00 |
4.35 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3592-04619-1 |
|
Gaia DR2 |
2163900082468835584 |
|
