19320-3044 LDS4810AB (Sig Boo)

 
 
19h 32m 01.17s -30 44' 44.0" P.A. 359 sep 151.3 mag 15.00,17.50 dist. 15.83 pc (51.64 l.y.)
 
 
Coord 2000
19320-3044
Discov num
LDS4810
Comp
AB
Coord arcsec 2000
19 32 01.17 -30 44 44.0
Date first
1960
Date last
2015
Obs
4
Pa first
357
Pa last
359
P.A. Now (θ)
359°
Sep first
146.0
Sep last
151.3
Sep. Now (ρ)
151.3"
Mag pri
15.00
Mag sec
17.50
delta mag (ΔM)
2.5
Spectral class
Pri motion ra
-040
Sec motion ra
-020
Pri motion dec
-158
Sec motion dec
-072
Notes
rPM=0.999
Nature of this double is uncertain.
 
 
19320-3044 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19320-3044 LDS4810 AB 1960 2015 4 359 151.3 15.00 17.50 2.50 <===
Show 19320-3044 LDS4810 AC 1960 1998 3 260 276.8 15.00 17.30 2.30
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Sig Boo
Spectr
F2V
Constellation
Bootes
SAO
83416
HIP
71284
Tycho2
2021-01323-1
HD
128167
HR
5447
GC
19659
GL
Gl 557
BD
BD+30 2536
Bayer
Sigma Bootis
Bayer name
Sig Boo
Flamsteed
28 Bootis
Flamsteed name
28 Boo
Distance
15.83
Distance ly
51.64
last precise pa
359
last precise sep
151.277
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19320-3044 LDS4810 AB 1998 2 359 149.8 15.00 17.50 D 193201.17-304444.0
19320-3044 LDS4810 AB 2015 4 359 151.3 15.00 17.50 193201.17-304444.0

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