21287+5710 BU 1142

 
 
21h 28m 41.72s +57 09' 33.7" P.A. 3 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
2009
Obs
14
Pa first
354
Pa last
3
P.A. Now (θ)
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.4"
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
 
 
Precise pa
2.5
Precise sep
0.378
Constellation
Cepheus
Tycho2
3974-00775-1
last precise pa
2.5
last precise sep
0.378
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21287+5710 BU 1142 1994 12 21 0.4 10.58 10.69 212841.72+570933.7
21287+5710 BU 1142 2009 13 3 0.4 10.58 10.69 212841.72+570933.7

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