19559+4912 HU 688 (HD 189065)
19h 55m 54.46s +49° 11' 43.6" P.A. 291.00 sep 3.9 mag 8.07,11.77 Sp B9 dist. 591.72 pc (1930.19 l.y.)
Coord 2000 |
19559+4912 |
|
Discov num |
HU 688 |
|
Comp |
|
|
Coord arcsec 2000 |
19 55 54.46 +49 11 43.6 |
|
Date first |
1904 |
|
Date last |
2019 |
|
Obs |
8 |
|
Pa first |
291 |
|
Pa last |
290.7 |
|
P.A. Now (θ) |
290.7° |
|
Sep first |
4.1 |
|
Sep last |
3.9 |
|
Sep. Now (ρ) |
3.9" |
|
Mag pri |
8.07 |
|
Mag sec |
11.77 |
|
delta mag (ΔM) |
3.7 |
|
Spectral class |
B9 (blue-white) |
|
Pri motion ra |
+002 |
|
Sec motion ra |
-004 |
|
Pri motion dec |
-011 |
|
Sec motion dec |
-012 |
|
Notes |
|
|
rPM=0.481
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 189065 |
|
Constellation |
Cygnus |
|
SAO |
48994 |
|
HIP |
98072 |
|
Tycho2 |
3566-01514-1 |
|
Gaia DR2 |
2086924269833797888 |
|
HD |
189065 |
|
BD |
BD+48 2984 |
|
Distance |
591.72 |
|
Distance ly |
1930.19 |
|