19575+2018 BU  425AB

 
 
19h 57m 32.28s +20 17' 40.1" P.A. 240 sep 1.4 mag 9.17,9.24 Sp B9 dist. 540.54 pc (1763.24 l.y.)
 
 
Coord 2000
19575+2018
Discov num
BU  425
Comp
AB
Coord arcsec 2000
19 57 32.28 +20 17 40.1
Date first
1876
Date last
2016
Obs
54
Pa first
241
Pa last
240
P.A. Now (θ)
240°
Sep first
1.3
Sep last
1.4
Sep. Now (ρ)
1.4"
Mag pri
9.17
Mag sec
9.24
delta mag (ΔM)
0.07
Spectral class
B9 (blue-white)
Pri motion ra
-003
Sec motion ra
-003
Pri motion dec
-006
Sec motion dec
-006
Notes
Nature of this double is uncertain.
 
 
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 54 240 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
239.7
Precise sep
1.375
Constellation
Sagitta
HIP
98216
Tycho2
1624-00669-1
HD
189068
BD
BD+19 4221
Distance
540.54
Distance ly
1763.24
last precise pa
239.6
last precise sep
1.438
 
 
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 AB 2005 47 239 1.4 9.17 9.24 B9 D 195732.28+201740.1
19575+2018 BU 425 AB 2006 49 240 1.3 9.17 9.24 B9 D 195732.28+201740.1
19575+2018 BU 425 AB 2008 50 240 1.4 9.17 9.24 B9 D 195732.28+201740.1
19575+2018 BU 425 AB 2009 51 240 1.4 9.17 9.24 B9 D 195732.28+201740.1
19575+2018 BU 425 AB 2010 53 239 1.3 9.17 9.24 B9 D 195732.28+201740.1
19575+2018 BU 425 AB 2011 54 240 1.4 9.17 9.24 B9 195732.28+201740.1
19575+2018 BU 425 AB 2016 54 240 1.4 9.17 9.24 B9 195732.28+201740.1

If you need more information about this double, apply for a data request form to the WDS.