21139+3830 COU 1817
21h 13m 56.08s +38° 29' 54.9" P.A. 110.00 sep 0.6 mag 9.53,10.27 Sp B8
| Coord 2000 |
21139+3830 |
|
Discov num |
COU1817 |
|
Comp |
|
|
Coord arcsec 2000 |
21 13 56.08 +38 29 54.9 |
|
| Date first |
1979 |
|
Date last |
2016 |
|
Obs |
8 |
|
| Pa first |
112 |
|
Pa last |
110.2 |
|
P.A. Now (θ) |
110.2° |
|
| Sep first |
0.6 |
|
Sep last |
0.557 |
|
Sep. Now (ρ) |
0.557" |
|
| Mag pri |
9.53 |
|
Mag sec |
10.27 |
|
delta mag (ΔM) |
0.74 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
+002 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-004 |
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
71098 |
|
Tycho2 |
3169-01863-1 |
|
Gaia DR2 |
1965008354662707328 |
|
