12358-6150 RST 4503 (HD 109517)

12h 35m 50.18s -61° 50' 27.3" P.A. 123.00 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) 123°
Sep first 0.2 Sep last 0.147 Sep. Now (ρ) 0.147"
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

Name HD 109517 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




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° Notes ReferenceTok2020g
Equinox2000 Last observation2020 Grade5(1=Definitive, 9=Indet.)

label theta rho
2000 94.9 0.143
2001 96.3 0.144
2002 97.8 0.145
2003 99.2 0.145
2004 100.6 0.146
2005 102.0 0.147
2006 103.4 0.147
2007 104.8 0.148
2008 106.2 0.148
2009 107.6 0.148
2010 109.0 0.149
2011 110.3 0.149
2012 111.7 0.149
2013 113.1 0.149
2014 114.4 0.149
2015 115.8 0.148
2016 117.2 0.148
2017 118.6 0.148
2018 120.0 0.147
2019 121.4 0.147
2020 122.8 0.146
2021 124.2 0.145
2022 125.6 0.144
2023 127.1 0.143
2024 128.6 0.142
2025 130.1 0.141
2026 131.6 0.140
2027 133.2 0.138
2028 134.8 0.137
2029 136.4 0.135
2030 138.1 0.134


 
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