21287+5710 BU 1142
21h 28m 41.72s +57° 09' 33.7" P.A. 6.00 sep 0.4 mag 10.58,10.69 Sp F8
Coord 2000 |
21287+5710 |
|
Discov num |
BU 1142 |
|
Comp |
|
|
Coord arcsec 2000 |
21 28 41.72 +57 09 33.7 |
|
Date first |
1889 |
|
Date last |
2016 |
|
Obs |
15 |
|
Pa first |
354 |
|
Pa last |
5.5 |
|
P.A. Now (θ) |
5.5° |
|
Sep first |
0.4 |
|
Sep last |
0.369 |
|
Sep. Now (ρ) |
0.369" |
|
Mag pri |
10.58 |
|
Mag sec |
10.69 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
F8 (yellow-white) |
|
Pri motion ra |
+005 |
|
Sec motion ra |
+005 |
|
Pri motion dec |
-004 |
|
Sec motion dec |
-004 |
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cepheus |
|
Tycho2 |
3974-00775-1 |
|
ADS |
15015 |
|