21364-4041 I 1444 (HD 205429)

 
 
21h 36m 24.11s -40° 40' 46.6" P.A. 125.00 sep 0.2 mag 9.42,9.46 Sp F7V dist. 130.21 pc (424.75 l.y.)
 
 
Coord 2000 21364-4041 Discov num I  1444 Comp Coord arcsec 2000 21 36 24.11 -40 40 46.6
Date first 1926 Date last 2021 Obs 16
Pa first 259 Pa last 124.6 P.A. Now (θ) 119°
Sep first 0.3 Sep last 0.235 Sep. Now (ρ) 0.228"
Mag pri 9.42 Mag sec 9.46 delta mag (ΔM) 0.04 Spectral class F7V (yellow-white)
Pri motion ra -005 Sec motion ra
Pri motion dec +003 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 205429 Constellation Grus SAO 230749 HIP 106676
Tycho2 7984-00930-1 HD 205429 CD CD-4114581 CP CP-41 9660
Distance 130.21 Distance ly 424.75
 
 
ORBITAL ELEMENTS
 
 
Period (P)169y Periastron (T)2037.05y Semi-major axis (a)0.308a
Eccentricity (e)0.365 Inclination (i)160° Longitude of periastron (ω)68.4°
Node (Ω)125° Notes ReferenceTok2019h
Equinox2000 Last observation2019 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 174.9 0.315
2001 173.1 0.312
2002 171.2 0.308
2003 169.4 0.305
2004 167.4 0.302
2005 165.5 0.298
2006 163.5 0.295
2007 161.4 0.291
2008 159.3 0.288
2009 157.1 0.284
2010 154.9 0.280
2011 152.6 0.276
2012 150.3 0.273
2013 147.9 0.269
2014 145.4 0.265
2015 142.8 0.261
2016 140.2 0.257
2017 137.5 0.253
2018 134.6 0.249
2019 131.7 0.244
2020 128.7 0.240
2021 125.6 0.236
2022 122.4 0.232
2023 119.0 0.228
2024 115.6 0.224
2025 112.0 0.220
2026 108.2 0.216
2027 104.4 0.212
2028 100.3 0.208
2029 96.2 0.204
2030 91.9 0.201


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



 
 


wds21364-4041a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic