20403-5114 HU 1617 (HD 196537)

 
 
20h 40m 15.16s -51° 13' 45.7" P.A. 279.00 sep 0.2 mag 8.50,9.00 Sp F6/7V dist. 275.48 pc (898.62 l.y.)
 
 
Coord 2000 20403-5114 Discov num HU 1617 Comp Coord arcsec 2000 20 40 15.16 -51 13 45.7
Date first 1914 Date last 2019 Obs 12
Pa first 124 Pa last 279.1 P.A. Now (θ) 279.1°
Sep first 0.5 Sep last 0.172 Sep. Now (ρ) 0.172"
Mag pri 8.50 Mag sec 9.00 delta mag (ΔM) 0.5 Spectral class F6/7V (yellow-white)
Pri motion ra +030 Sec motion ra
Pri motion dec -038 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 196537 Constellation Indus SAO 246682 HIP 102006
Tycho2 8419-01332-1 Gaia DR2 6474719896585017728 HD 196537 CD CD-5112659
CP CP-5111541 Distance 275.48 Distance ly 898.62
 
 
ORBITAL ELEMENTS
 
 
Period (P)200y Periastron (T)2058.84y Semi-major axis (a)0.351a
Eccentricity (e)0.351 Inclination (i)84.4° Longitude of periastron (ω)248.1°
Node (Ω)111° Notes ReferenceTok2021f
Equinox2000 Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 275.6 0.145
2001 276.5 0.151
2002 277.4 0.158
2003 278.1 0.165
2004 278.8 0.172
2005 279.5 0.178
2006 280.1 0.185
2007 280.7 0.191
2008 281.2 0.197
2009 281.7 0.203
2010 282.2 0.209
2011 282.7 0.215
2012 283.1 0.221
2013 283.5 0.226
2014 283.9 0.232
2015 284.3 0.237
2016 284.6 0.242
2017 284.9 0.247
2018 285.3 0.251
2019 285.6 0.256
2020 285.9 0.260
2021 286.2 0.264
2022 286.5 0.267
2023 286.8 0.271
2024 287.0 0.274
2025 287.3 0.277
2026 287.6 0.279
2027 287.8 0.281
2028 288.1 0.283
2029 288.3 0.284
2030 288.6 0.285


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



 
 


wds20403-5114a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic