21268+3731 COU 1821 Da,Db
21h 26m 43.73s +37° 32' 42.4" P.A. 96.00 sep 0.7 mag 10.37,10.39
| Coord 2000 |
21268+3731 |
|
Discov num |
COU1821 |
|
Comp |
Da,Db |
|
Coord arcsec 2000 |
21 26 43.73 +37 32 42.4 |
|
| Date first |
1978 |
|
Date last |
2014 |
|
Obs |
7 |
|
| Pa first |
94 |
|
Pa last |
96 |
|
P.A. Now (θ) |
96° |
|
| Sep first |
0.6 |
|
Sep last |
0.663 |
|
Sep. Now (ρ) |
0.663" |
|
| Mag pri |
10.37 |
|
Mag sec |
10.39 |
|
delta mag (ΔM) |
0.02 |
|
Spectral class |
|
|
| Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+002 |
|
| Notes |
|
|
Nature of this double is uncertain.
21268+3731 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 204324 |
71348 |
21 26 48 +37 31 04 |
SEI 1516 AB |
1895 |
1 |
335 |
3.9 |
7.91 |
9.60 |
1.69 |
|
|
| Show |
|
71348 |
21 26 48 +37 31 04 |
HEI 9004 AC |
2015 |
6 |
275 |
25.5 |
8.91 |
12.75 |
3.84 |
|
|
| Show |
|
71348 |
21 26 48 +37 31 04 |
HEI 9004 AD |
2015 |
6 |
335 |
109.8 |
7.91 |
9.73 |
1.82 |
|
|
| Show |
|
|
21 26 44 +37 32 42 |
COU 1821 Da,Db |
2014 |
7 |
96 |
0.7 |
10.37 |
10.39 |
0.02 |
|
<=== |
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3182-04392-1 |
|
Gaia DR2 |
1964155820832897024 |
|
