00126-1142 RST 3343 (HD 821)

 
 
00h 12m 33.15s -11 41' 34.7" P.A. 269.00 sep 0.3 mag 8.98,8.98 Sp F0V dist. 174.83 pc (570.3 l.y.)
 
 
Coord 2000 00126-1142 Discov num RST3343 Comp Coord arcsec 2000 00 12 33.15 -11 41 34.7
Date first 1938 Date last 2021 Obs 15
Pa first 135 Pa last 269 P.A. Now (θ) 269°
Sep first 0.3 Sep last 0.278 Sep. Now (ρ) 0.278"
Mag pri 8.98 Mag sec 8.98 delta mag (ΔM) 0 Spectral class F0V (yellow-white)
Pri motion ra +000 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 821 Constellation Cetus SAO 147148 HIP 1005
Tycho2 5264-00128-1 Gaia DR2 2427475662698911872 HD 821 BD BD-12 14
Distance 174.83 Distance ly 570.3
 
 
ORBITAL ELEMENTS
 
 
Period (P)187.8y Periastron (T)2058.25y Semi-major axis (a)0.277a
Eccentricity (e)0.164 Inclination (i)42° Longitude of periastron (ω)272.5°
Node (Ω)88.9° Notes ReferenceDoc2013g
Equinox2000 Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 241.2 0.276
2001 242.7 0.277
2002 244.1 0.278
2003 245.4 0.278
2004 246.8 0.279
2005 248.2 0.279
2006 249.6 0.280
2007 251.0 0.280
2008 252.4 0.280
2009 253.7 0.280
2010 255.1 0.280
2011 256.5 0.280
2012 257.9 0.279
2013 259.2 0.279
2014 260.6 0.278
2015 262.0 0.277
2016 263.4 0.276
2017 264.9 0.275
2018 266.3 0.274
2019 267.7 0.273
2020 269.2 0.271
2021 270.7 0.270
2022 272.2 0.268
2023 273.7 0.266
2024 275.2 0.264
2025 276.8 0.262
2026 278.4 0.259
2027 280.0 0.257
2028 281.6 0.254
2029 283.3 0.251
2030 285.1 0.248


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



 
 


wds00126-1142b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic