12358-6150 RST4503

 
 
12h 35m 50.18s -61 50' 27.3" P.A. 124.20 sep 0.1 mag 9.20,9.93 Sp B9V dist. 1428.57 pc (4660 l.y.)
 
 
Coord 2000
12358-6150
Discov num
RST4503
Comp
Coord arcsec 2000
12 35 50.18 -61 50 27.3
Date first
1939
Date last
2020
Obs
8
Pa first
356
Pa last
123
P.A. Now (θ)
124.2°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.15"
Mag pri
9.20
Mag sec
9.93
delta mag (ΔM)
0.73
Spectral class
B9V (blue-white)
Pri motion ra
-020
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
123
Precise sep
0.147
Constellation
Crux
SAO
251967
HIP
61479
Tycho2
8988-00903-1
Gaia DR2
6054730369177817856
HD
109517
CP
CP-61 3303
Distance
1428.57
Distance ly
4660
last precise pa
123
last precise sep
0.147
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)1729.08y Semi-major axis (a)0.21a
Eccentricity (e)0.317 Inclination (i)53° Longitude of periastron (ω)25°
Node (Ω)120.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2020
label rho theta
2000 0.143 94.9
2001 0.144 96.3
2002 0.145 97.8
2003 0.145 99.2
2004 0.146 100.6
2005 0.147 102.0
2006 0.147 103.4
2007 0.148 104.8
2008 0.148 106.2
2009 0.148 107.6
2010 0.149 109.0
2011 0.149 110.3
2012 0.149 111.7
2013 0.149 113.1
2014 0.149 114.4
2015 0.148 115.8
2016 0.148 117.2
2017 0.148 118.6
2018 0.147 120.0
2019 0.147 121.4
2020 0.146 122.8
2021 0.145 124.2
2022 0.144 125.6
2023 0.143 127.1
2024 0.142 128.6
2025 0.141 130.1
2026 0.140 131.6
2027 0.138 133.2
2028 0.137 134.8
2029 0.135 136.4
2030 0.134 138.1


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



 
 


wds12358-6150a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12358-6150 RST4503 1991 6 84 0.2 9.20 9.93 B9V 123550.18-615027.3
12358-6150 RST4503 2018 7 120 0.1 9.20 9.93 B9V 123550.18-615027.3

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