17191-4638 BSO  13AB

 
 
17H 19M 03.85S -46 38' 10.1" P.A. 258.5 SEP 10.62 MAG 5.61,8.88 SP G8V+M0V DIST. 8.8 PC (28.71 L.Y.)
 
 
Coord 2000
17191-4638
Discov num
BSO  13
Comp
AB
Coord arcsec 2000
17 19 03.85 -46 38 10.1
Date first
1880
Date last
2016
Obs
135
Pa first
0
Pa last
258
P.A. Now (θ)
258.5°
Sep first
3.7
Sep last
10.8
Sep. Now (ρ)
10.62"
Mag pri
5.61
Mag sec
8.88
delta mag (ΔM)
3.27
Spectral class
G8V+M0V (yellow/red)
Pri motion ra
+105
Sec motion ra
+097
Pri motion dec
+014
Sec motion dec
+014
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
17191-4638 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227816 17191-4638 BSO 13 AB 1880 2016 135 258 10.6 5.61 8.88 3.27 Y <===
Show 227816 17191-4638 BSO 13 AC 1891 1999 4 267 144.6 5.61 13.43 7.82
Show 227816 17191-4638 BSO 13 AD 1900 1999 3 290 94.7 5.61 14.43 8.82
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ara
SAO
227816
HIP
84720
Tycho2
8341-04366-1
HD
156274
HR
6416
GL
Gl 666A
CD
CD-4611370
CP
CP-46 8513
Distance
8.8
Distance ly
28.71
last precise pa
258.3
last precise sep
10.78
 
 
ORBITAL ELEMENTS
 
 
Period (P)953y Periastron (T)1907.5y Semi-major axis (a)13.341a
Eccentricity (e)0.825 Inclination (i)40.5° Longitude of periastron (ω)329.7°
Node (Ω)137.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 9.323 253.2
2001 9.398 253.6
2002 9.472 253.9
2003 9.545 254.2
2004 9.619 254.5
2005 9.692 254.8
2006 9.765 255.2
2007 9.837 255.5
2008 9.910 255.7
2009 9.982 256.0
2010 10.054 256.3
2011 10.125 256.6
2012 10.196 256.9
2013 10.267 257.2
2014 10.338 257.4
2015 10.408 257.7
2016 10.478 258.0
2017 10.548 258.2
2018 10.618 258.5
2019 10.687 258.7
2020 10.756 259.0
2021 10.825 259.2
2022 10.893 259.5
2023 10.962 259.7
2024 11.030 260.0
2025 11.097 260.2
2026 11.165 260.4
2027 11.232 260.7
2028 11.299 260.9
2029 11.366 261.1
2030 11.432 261.3

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic