19575+2018 BU  425AC

 
 
19h 57m 32.28s +20 17' 40.1" P.A. 42 sep 23 mag 9.17,12.61 Sp B9
 
 
Coord 2000
19575+2018
Discov num
BU  425
Comp
AC
Coord arcsec 2000
19 57 32.28 +20 17 40.1
Date first
1878
Date last
2013
Obs
13
Pa first
39
Pa last
42
P.A. Now (θ)
42°
Sep first
19.6
Sep last
23.0
Sep. Now (ρ)
23"
Mag pri
9.17
Mag sec
12.61
delta mag (ΔM)
3.44
Spectral class
B9 (blue-white)
Pri motion ra
+004
Sec motion ra
-002
Pri motion dec
-001
Sec motion dec
-003
Notes
rPM=1.534
This double is not physical.
 
 
19575+2018 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19575+2018 BU 425 AB 1876 2016 55 240 1.4 9.17 9.24 0.07
Show 19575+2018 BU 425 AC 1878 2013 13 42 23.0 9.17 12.61 3.44 <===
Show 19575+2018 BU 425 AD 2000 2013 3 84 30.4 9.17 13.12 3.95
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
41.5
Precise sep
23
Cdsa2 id
BU 425 AC
Constellation
Sagitta
Tycho2
1624-00669-1
HD
189068
Ra deg
19.958966666666665
De deg
20.294472222222225
last precise pa
41.5
last precise sep
23
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19575+2018 BU 425 AC 2000 11 41 22.4 9.17 12.61 B9 D 195732.28+201740.1
19575+2018 BU 425 AC 2001 12 41 22.4 9.17 12.61 B9 D 195732.28+201740.1
19575+2018 BU 425 AC 2013 13 42 23.0 9.17 12.61 B9 195732.28+201740.1

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