21028+3534 BTG   6BD

 
 
21H 02M 45.85S +35 33' 36.0" P.A. 274 SEP 16 MAG 11.50,14.20
 
 
Coord 2000
21028+3534
Discov num
BTG   6
Comp
BD
Coord arcsec 2000
21 02 45.85 +35 33 36.0
Date first
1998
Date last
2007
Obs
3
Pa first
274
Pa last
274
P.A. Now (θ)
274°
Sep first
15.8
Sep last
16.0
Sep. Now (ρ)
16"
Mag pri
11.50
Mag sec
14.20
delta mag (ΔM)
2.7
Spectral class
Pri motion ra
-005
Sec motion ra
-014
Pri motion dec
+007
Sec motion dec
+011
Notes
N R (See Notes, Red magnitudes)
rPM=0.553
Nature of this double is uncertain.
 
 
21028+3534 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21028+3534 SEI1375 AB 1896 2007 9 337 6.7 12.30 11.50 0.80
Show 21028+3534 SEI1376 AC 1896 2012 6 272 11.4 12.30 12.70 0.40
Show 21028+3534 BTG 6 BC 1896 2007 6 236 10.7 11.50 12.70 1.20
Show 21028+3534 BTG 6 BD 1998 2007 3 274 16.0 11.50 14.20 2.70 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
274.1
last precise sep
16