20308+3749 SEI1146AB

 
 
20h 30m 45.51s +37 48' 58.8" P.A. 42 sep 10.2 mag 12.25,12.27
 
 
Coord 2000
20308+3749
Discov num
SEI1146
Comp
AB
Coord arcsec 2000
20 30 45.51 +37 48 58.8
Date first
1895
Date last
2015
Obs
9
Pa first
42
Pa last
42
P.A. Now (θ)
42°
Sep first
10.2
Sep last
10.2
Sep. Now (ρ)
10.2"
Mag pri
12.25
Mag sec
12.27
delta mag (ΔM)
0.02
Spectral class
Pri motion ra
+003
Sec motion ra
+002
Pri motion dec
-001
Sec motion dec
+000
Notes
B (Blue magnitudes)
rPM=0.447
Nature of this double is uncertain.
 
 
20308+3749 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20308+3749 SEI1146 AB 1895 2015 9 42 10.2 12.25 12.27 0.02 <===
Show 20308+3749 SEI1147 AC 1895 2015 8 286 14.5 12.25 12.53 0.28
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
42.3
Precise sep
10.229
Constellation
Cygnus
Tycho2
3153-00884-1
Gaia DR2
82251302656
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20308+3749 SEI1146 AB 1998 4 43 10.2 12.25 12.27 DB 203045.51+374858.8
20308+3749 SEI1146 AB 2002 5 42 10.2 12.25 12.27 DB 203045.51+374858.8
20308+3749 SEI1146 AB 2010 6 42 9.8 12.25 12.27 B 203045.51+374858.8
20308+3749 SEI1146 AB 2015 6 42 10.2 12.25 12.27 B 203045.51+374858.8

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