21308+4827 A 770 AB,C
21h 30m 48.00s +48° 27' 25.4" P.A. 317.00 sep 1.1 mag 8.74,11.90 Sp K0
| Coord 2000 |
21308+4827 |
|
Discov num |
A 770 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
21 30 48.00 +48 27 25.4 |
|
| Date first |
1904 |
|
Date last |
2018 |
|
Obs |
13 |
|
| Pa first |
330 |
|
Pa last |
316.7 |
|
P.A. Now (θ) |
316.7° |
|
| Sep first |
1.8 |
|
Sep last |
1.096 |
|
Sep. Now (ρ) |
1.096" |
|
| Mag pri |
8.74 |
|
Mag sec |
11.90 |
|
delta mag (ΔM) |
3.16 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+018 |
|
Sec motion ra |
|
|
| Pri motion dec |
-142 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
21308+4827 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 30 48 +48 27 25 |
A 770 AB |
2018 |
10 |
143 |
0.1 |
7.99 |
7.99 |
0.00 |
Y |
|
| Show |
|
|
21 30 48 +48 27 25 |
A 770 AB,C |
2018 |
13 |
317 |
1.1 |
8.74 |
11.90 |
3.16 |
|
<=== |
| Show |
|
|
21 30 48 +48 27 25 |
A 770 AB,D |
2017 |
11 |
15 |
98.9 |
8.74 |
10.59 |
1.85 |
|
|
| Show |
|
|
21 30 50 +48 28 59 |
A 770 DE |
2015 |
11 |
41 |
7.2 |
10.59 |
12.00 |
1.41 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3594-01084-1 |
|
Gaia DR2 |
1978557468965457408 |
|
