20016+3435 COU 1947 (HD 189983)
20h 01m 33.86s +34° 34' 59.1" P.A. 91.00 sep 0.3 mag 8.86,10.05 Sp B8V dist. 289.86 pc (945.52 l.y.)
| Coord 2000 |
20016+3435 |
|
Discov num |
COU1947 |
|
Comp |
|
|
Coord arcsec 2000 |
20 01 33.86 +34 34 59.1 |
|
| Date first |
1981 |
|
Date last |
2014 |
|
Obs |
7 |
|
| Pa first |
94 |
|
Pa last |
90.9 |
|
P.A. Now (θ) |
90.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.327 |
|
Sep. Now (ρ) |
0.327" |
|
| Mag pri |
8.86 |
|
Mag sec |
10.05 |
|
delta mag (ΔM) |
1.19 |
|
Spectral class |
B8V (blue-white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
|
|
| Pri motion dec |
+006 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 189983 |
|
Constellation |
Cygnus |
|
SAO |
69276 |
|
HIP |
98593 |
|
| Tycho2 |
2678-01481-1 |
|
Gaia DR2 |
2058545943466190976 |
|
HD |
189983 |
|
BD |
BD+34 3840 |
|
| Distance |
289.86 |
|
Distance ly |
945.52 |
|
