20129+3429 AG  250

 
 
20h 12m 55.97s +34 28' 31.6" P.A. 53 sep 8.9 mag 8.45,10.20 Sp A2V
 
 
Coord 2000
20129+3429
Discov num
AG  250
Comp
Coord arcsec 2000
20 12 55.97 +34 28 31.6
Date first
1896
Date last
2018
Obs
20
Pa first
52
Pa last
53
P.A. Now (θ)
53°
Sep first
8.9
Sep last
8.9
Sep. Now (ρ)
8.9"
Mag pri
8.45
Mag sec
10.20
delta mag (ΔM)
1.75
Spectral class
A2V (white)
Pri motion ra
+002
Sec motion ra
-004
Pri motion dec
-017
Sec motion dec
-017
Notes
N (See Notes)
rPM=0.344
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
53.1
Precise sep
8.889
Constellation
Cygnus
SAO
69614
Tycho2
2679-01114-1
Gaia DR2
50809580288
HD
192284
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20129+3429 AG 250 2006 14 51 8.7 8.45 10.20 A2V D 201255.97+342831.6
20129+3429 AG 250 2015 16 53 8.7 8.45 10.20 A2V N 201255.97+342831.6

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