20001+3423 HU 1308

 
 
20h 00m 08.51s +34 23' 01.1" P.A. 28 sep 0.5 mag 9.55,9.86 Sp A
 
 
Coord 2000
20001+3423
Discov num
HU 1308
Comp
Coord arcsec 2000
20 00 08.51 +34 23 01.1
Date first
1905
Date last
2016
Obs
20
Pa first
2
Pa last
28
P.A. Now (θ)
28°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
9.55
Mag sec
9.86
delta mag (ΔM)
0.31
Spectral class
A (white)
Pri motion ra
+004
Sec motion ra
+004
Pri motion dec
+001
Sec motion dec
+001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
27.6
Precise sep
0.52
Constellation
Cygnus
SAO
69236
Tycho2
2678-02028-1
HD
189705
last precise pa
last precise sep
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20001+3423 HU 1308 1991 17 19 0.4 9.55 9.86 A 200008.51+342301.1
20001+3423 HU 1308 2007 18 28 0.5 9.55 9.86 A 200008.51+342301.1
20001+3423 HU 1308 2009 19 29 0.5 9.55 9.86 A 200008.51+342301.1
20001+3423 HU 1308 2016 20 28 0.5 9.55 9.86 A 200008.51+342301.1

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