17240-1142 BU  242AB

 
 
17h 24m 02.80s -11 42' 06.9" P.A. 80 sep 1.2 mag 8.69,9.48 Sp A2 dist. 3846.15 pc (12546.14 l.y.)
 
 
Coord 2000
17240-1142
Discov num
BU  242
Comp
AB
Coord arcsec 2000
17 24 02.80 -11 42 06.9
Date first
1875
Date last
2017
Obs
28
Pa first
69
Pa last
80
P.A. Now (θ)
80°
Sep first
1.0
Sep last
1.2
Sep. Now (ρ)
1.2"
Mag pri
8.69
Mag sec
9.48
delta mag (ΔM)
0.79
Spectral class
A2 (white)
Pri motion ra
+000
Sec motion ra
+000
Pri motion dec
-007
Sec motion dec
-007
Notes
Nature of this double is uncertain.
 
 
17240-1142 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 160518 17240-1142 BU 242 AB 1875 2017 28 80 1.2 8.69 9.48 0.79 <===
Show 160518 17240-1142 BU 242 AC 1876 2017 16 65 9.1 8.71 11.12 2.41
Show 160518 17240-1142 BU 242 AD 1876 2017 17 62 48.3 8.71 10.53 1.82
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
80
Precise sep
1.178
Cdsa2 id
BU 242 AB
Constellation
Serpens
SAO
160518
HIP
85151
Tycho2
5666-00050-1
HD
157499
BD
BD-11 4367
Ra deg
17.400777777777776
De deg
-11.701916666666666
Distance
3846.15
Distance ly
12546.14
last precise pa
80
last precise sep
1.178
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17240-1142 BU 242 AB 1998 26 79 1.1 8.69 9.48 A2 D 172402.80-114206.9
17240-1142 BU 242 AB 2009 27 82 1.1 8.69 9.48 A2 D 172402.80-114206.9
17240-1142 BU 242 AB 2016 27 79 1.2 8.69 9.48 A2 172402.80-114206.9
17240-1142 BU 242 AB 2017 28 80 1.2 8.69 9.48 A2 172402.80-114206.9

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