20257+5508 A  1429

 
 
20h 25m 40.71s +55 08' 20.3" P.A. 187 sep 0.7 mag 8.57,9.35 Sp A2V dist. 289.02 pc (942.78 l.y.)
 
 
Coord 2000
20257+5508
Discov num
A  1429
Comp
Coord arcsec 2000
20 25 40.71 +55 08 20.3
Date first
1906
Date last
2016
Obs
16
Pa first
197
Pa last
187
P.A. Now (θ)
187°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
8.57
Mag sec
9.35
delta mag (ΔM)
0.78
Spectral class
A2V (white)
Pri motion ra
+004
Sec motion ra
+004
Pri motion dec
+003
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
186.8
Precise sep
0.68
Constellation
Cygnus
SAO
32570
HIP
100755
Tycho2
3941-01889-1
Gaia DR2
62917346304
HD
194907
BD
BD+54 2349
Distance
289.02
Distance ly
942.78
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20257+5508 A 1429 2004 13 187 0.6 8.57 9.35 A2V D 202540.71+550820.3
20257+5508 A 1429 2008 14 188 0.6 8.57 9.35 A2V D 202540.71+550820.3
20257+5508 A 1429 2016 16 187 0.7 8.57 9.35 A2V 202540.71+550820.3

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