20291+2956 AG  406

 
 
20h 29m 04.78s +29 56' 23.5" P.A. 333 sep 8.5 mag 9.45,10.30 Sp B9 dist. 396.83 pc (1294.46 l.y.)
 
 
Coord 2000
20291+2956
Discov num
AG  406
Comp
Coord arcsec 2000
20 29 04.78 +29 56 23.5
Date first
1894
Date last
2018
Obs
17
Pa first
328
Pa last
333
P.A. Now (θ)
333°
Sep first
7.7
Sep last
8.5
Sep. Now (ρ)
8.5"
Mag pri
9.45
Mag sec
10.30
delta mag (ΔM)
0.85
Spectral class
B9 (blue-white)
Pri motion ra
+004
Sec motion ra
+003
Pri motion dec
-006
Sec motion dec
-003
Notes
rPM=0.439
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
332.7
Precise sep
8.478
Constellation
Cygnus
SAO
88743
HIP
101050
Tycho2
2168-00194-1
Gaia DR2
13035409536
HD
334456
BD
BD+29 4053
Distance
396.83
Distance ly
1294.46
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20291+2956 AG 406 2000 7 333 8.3 9.45 10.30 B9 D 202904.78+295623.5
20291+2956 AG 406 2011 8 333 8.3 9.45 10.30 B9 D 202904.78+295623.5
20291+2956 AG 406 2015 12 333 8.3 9.45 10.30 B9 202904.78+295623.5

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