15544-6131 HDS 2240 (HD 141806)

 
 
15h 54m 24.71s -61° 31' 05.8" P.A. 244.00 sep 0.0 mag 10.38,10.64 Sp G2/G3V dist. 112.61 pc (367.33 l.y.)
 
 
Coord 2000 15544-6131 Discov num HDS2240 Comp Coord arcsec 2000 15 54 24.71 -61 31 05.8
Date first 1991 Date last 2021 Obs 9
Pa first 12 Pa last 244 P.A. Now (θ) 244°
Sep first 0.3 Sep last 0.033 Sep. Now (ρ) 0.033"
Mag pri 10.38 Mag sec 10.64 delta mag (ΔM) 0.26 Spectral class G2/G3V (yellow)
Pri motion ra -023 Sec motion ra
Pri motion dec +036 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 141806 Constellation Triangulum Australe SAO 253337 HIP 77890
Tycho2 9023-01538-1 Gaia DR2 5832607614273523840 HD 141806 CP CP-61 5362
Distance 112.61 Distance ly 367.33
 
 
ORBITAL ELEMENTS
 
 
Period (P)80y Periastron (T)2020.49y Semi-major axis (a)0.191a
Eccentricity (e)0.83 Inclination (i) Longitude of periastron (ω)
Node (Ω)182.8° Notes ReferenceTok2020g
Equinox2000 Last observation2020 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 19.3 0.291
2001 20.4 0.284
2002 21.6 0.277
2003 22.8 0.270
2004 24.1 0.262
2005 25.5 0.254
2006 26.9 0.245
2007 28.5 0.236
2008 30.2 0.226
2009 32.1 0.215
2010 34.2 0.204
2011 36.6 0.192
2012 39.2 0.179
2013 42.3 0.165
2014 46.0 0.150
2015 50.5 0.135
2016 56.3 0.117
2017 64.2 0.099
2018 76.0 0.078
2019 96.9 0.056
2020 143.3 0.036
2021 223.7 0.037
2022 269.3 0.057
2023 289.9 0.079
2024 301.6 0.099
2025 309.4 0.118
2026 315.2 0.135
2027 319.7 0.151
2028 323.3 0.165
2029 326.4 0.179
2030 329.1 0.192


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



 
 


wds15544-6131b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic