20177+3921 SEI 1070 (HD 228789)
20h 17m 42.20s +39° 20' 58.4" P.A. 143.00 sep 27.9 mag 10.27,11.06 Sp B
Coord 2000 |
20177+3921 |
|
Discov num |
SEI1070 |
|
Comp |
|
|
Coord arcsec 2000 |
20 17 42.20 +39 20 58.4 |
|
Date first |
1892 |
|
Date last |
2015 |
|
Obs |
15 |
|
Pa first |
144 |
|
Pa last |
142.5 |
|
P.A. Now (θ) |
142.5° |
|
Sep first |
28.4 |
|
Sep last |
27.885 |
|
Sep. Now (ρ) |
27.885" |
|
Mag pri |
10.27 |
|
Mag sec |
11.06 |
|
delta mag (ΔM) |
0.79 |
|
Spectral class |
B (blue-white) |
|
Pri motion ra |
-004 |
|
Sec motion ra |
-004 |
|
Pri motion dec |
-005 |
|
Sec motion dec |
-005 |
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 228789 |
|
Constellation |
Cygnus |
|
Tycho2 |
3151-00165-1 |
|
Gaia DR2 |
2061381102909847296 |
|
HD |
228789 |
|