20010+3742 BU 1289AC

 
 
20h 00m 59.61s +37 41' 56.1" P.A. 90 sep 21.4 mag 8.15,9.70 Sp B5
 
 
Coord 2000
20010+3742
Discov num
BU 1289
Comp
AC
Coord arcsec 2000
20 00 59.61 +37 41 56.1
Date first
1896
Date last
2017
Obs
25
Pa first
90
Pa last
90
P.A. Now (θ)
90°
Sep first
21.4
Sep last
21.4
Sep. Now (ρ)
21.4"
Mag pri
8.15
Mag sec
9.70
delta mag (ΔM)
1.55
Spectral class
B5 (blue-white)
Pri motion ra
-007
Sec motion ra
-007
Pri motion dec
-009
Sec motion dec
+033
Notes
N (See Notes)
rPM=1.245
This double is not physical.
 
 
20010+3742 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20010+3742 BU 1289 AB 1899 2016 21 55 0.7 8.15 9.20 1.05
Show 20010+3742 BU 1289 AC 1896 2017 25 90 21.4 8.15 9.70 1.55 <===
Show 20010+3742 FOX 246 AB,D 1896 2002 8 170 104.3 8.15 11.17 3.02
Show 20010+3742 WAL 125 AB,E 1944 2002 3 10 46.6 8.15 13.52 5.37
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
89.9
Precise sep
21.392
Cdsa2 id
BU 1289 AC
Constellation
Cygnus
Tycho2
3150-02606-1
HD
189901
Ra deg
20.016558333333332
De deg
37.69891666666666
last precise pa
89.9
last precise sep
21.392
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20010+3742 BU 1289 AC 2003 23 89 21.7 8.15 9.70 D 200059.61+374156.1
20010+3742 BU 1289 AC 2017 25 90 21.4 8.15 9.70 B5 N 200059.61+374156.1

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