23286-3821 HDS 3342 (HD 220992)

 
 
23h 28m 34.60s -38° 20' 35.2" P.A. 250.00 sep 0.1 mag 9.22,10.92 Sp F5V dist. 144.3 pc (470.71 l.y.)
 
 
Coord 2000 23286-3821 Discov num HDS3342 Comp Coord arcsec 2000 23 28 34.60 -38 20 35.2
Date first 1991 Date last 2021 Obs 9
Pa first 140 Pa last 250.1 P.A. Now (θ) 231.5°
Sep first 0.2 Sep last 0.071 Sep. Now (ρ) 0.064"
Mag pri 9.22 Mag sec 10.92 delta mag (ΔM) 1.7 Spectral class F5V (yellow-white)
Pri motion ra +009 Sec motion ra
Pri motion dec -040 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 220992 Constellation Sculptor SAO 214570 HIP 115876
Tycho2 8013-01190-1 Gaia DR2 6538507926230337792 HD 220992 CD CD-3915040
CP CP-39 9252 Distance 144.3 Distance ly 470.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)46.6y Periastron (T)2014.9y Semi-major axis (a)0.119a
Eccentricity (e)0.368 Inclination (i)122.8° Longitude of periastron (ω)155.6°
Node (Ω)125.3° Notes ReferenceTok2019c
Equinox Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 119.8 0.146
2001 117.2 0.141
2002 114.2 0.134
2003 111.0 0.126
2004 107.3 0.117
2005 102.9 0.107
2006 97.6 0.096
2007 90.8 0.085
2008 81.9 0.073
2009 69.6 0.062
2010 52.4 0.053
2011 30.1 0.048
2012 6.2 0.049
2013 345.7 0.055
2014 330.1 0.064
2015 318.0 0.071
2016 307.9 0.076
2017 298.7 0.078
2018 289.7 0.077
2019 280.1 0.074
2020 269.6 0.071
2021 257.9 0.067
2022 245.1 0.064
2023 231.5 0.064
2024 218.1 0.065
2025 205.8 0.069
2026 194.9 0.074
2027 185.7 0.081
2028 178.0 0.088
2029 171.6 0.096
2030 166.1 0.104


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


 
  


wds23286-3821a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic