20594+3626 HU 764 (HD 199987)
20h 59m 23.14s +36° 25' 43.8" P.A. 196.00 sep 0.4 mag 8.24,9.94 Sp B9 dist. 520.83 pc (1698.95 l.y.)
| Coord 2000 |
20594+3626 |
|
Discov num |
HU 764 |
|
Comp |
|
|
Coord arcsec 2000 |
20 59 23.14 +36 25 43.8 |
|
| Date first |
1904 |
|
Date last |
2015 |
|
Obs |
21 |
|
| Pa first |
188 |
|
Pa last |
196.4 |
|
P.A. Now (θ) |
196.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.415 |
|
Sep. Now (ρ) |
0.415" |
|
| Mag pri |
8.24 |
|
Mag sec |
9.94 |
|
delta mag (ΔM) |
1.7 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
|
|
| Pri motion dec |
+024 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 199987 |
|
Constellation |
Cygnus |
|
SAO |
70765 |
|
HIP |
103594 |
|
| Tycho2 |
2700-02427-1 |
|
Gaia DR2 |
1871328486504460800 |
|
HD |
199987 |
|
BD |
BD+35 4344 |
|
| Distance |
520.83 |
|
Distance ly |
1698.95 |
|
