11544-3745 HWE 71 (HD 103437)

11h 54m 25.81s -37° 44' 56.1" P.A. 72.00 sep 0.2 mag 6.75,8.60 Sp F7V dist. 50.61 pc (165.09 l.y.)

Coord 2000 11544-3745 Discov num HWE  71 Comp Coord arcsec 2000 11 54 25.81 -37 44 56.1
Date first 1876 Date last 2018 Obs 29
Pa first 270 Pa last 72 P.A. Now (θ) 28.8°
Sep first 1.2 Sep last 0.179 Sep. Now (ρ) 0.106"
Mag pri 6.75 Mag sec 8.60 delta mag (ΔM) 1.85 Spectral class F7V (yellow-white)
Pri motion ra -315 Sec motion ra
Pri motion dec +061 Sec motion dec
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 103437 Constellation Centaurus SAO 202926 HIP 58057
Tycho2 7742-01391-1 HD 103437 HR 4557 GC 16280
GL Gl 452.2A CD CD-37 7536 CP CP-37 4950 Distance 50.61
Distance ly 165.09




ORBITAL ELEMENTS

Period (P)248.8y Periastron (T)2008.48y Semi-major axis (a)1.004a
Eccentricity (e)0.72 Inclination (i)99.6° Longitude of periastron (ω)162°
Node (Ω)276.3° Notes ReferenceTok2015c
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 225.4 0.091
2001 197.2 0.068
2002 159.5 0.070
2003 133.6 0.095
2004 119.8 0.130
2005 112.0 0.166
2006 107.0 0.201
2007 103.4 0.232
2008 100.6 0.258
2009 98.2 0.277
2010 96.1 0.288
2011 94.1 0.292
2012 92.1 0.289
2013 90.0 0.280
2014 87.8 0.267
2015 85.3 0.251
2016 82.4 0.232
2017 78.9 0.212
2018 74.8 0.191
2019 69.5 0.169
2020 62.8 0.149
2021 54.1 0.130
2022 42.8 0.115
2023 28.8 0.106
2024 13.0 0.103
2025 357.5 0.107
2026 344.2 0.119
2027 333.6 0.135
2028 325.5 0.155
2029 319.3 0.176
2030 314.5 0.199


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



 
 


wds11544-3745a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic