00462-2214 RST 4155 (HD 4397)

 
 
00h 46m 11.05s -22 14' 29.3" P.A. 236.00 sep 0.2 mag 9.76,10.03 Sp F9V+G1V dist. 93.81 pc (306.01 l.y.)
 
 
Coord 2000 00462-2214 Discov num RST4155 Comp Coord arcsec 2000 00 46 11.05 -22 14 29.3
Date first 1940 Date last 2021 Obs 19
Pa first 344 Pa last 236.4 P.A. Now (θ) 229.7°
Sep first 0.2 Sep last 0.169 Sep. Now (ρ) 0.175"
Mag pri 9.76 Mag sec 10.03 delta mag (ΔM) 0.27 Spectral class F9V+G1V (yellow-white/yellow)
Pri motion ra -014 Sec motion ra
Pri motion dec +020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 4397 Constellation Cetus SAO 166554 HIP 3606
Tycho2 5849-02187-1 Gaia DR2 2349543584191606144 HD 4397 CD CD-22 248
CP CP-22 81 Distance 93.81 Distance ly 306.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)49.27y± 1.13 Periastron (T)2003.49y± 0.53 Semi-major axis (a)0.1693a± 0.0044
Eccentricity (e)0.305± 0.022 Inclination (i)138°± 2.3 Longitude of periastron (ω)141.7°± 2.5
Node (Ω)177.9°± 4.3 Notes ReferenceTok2020e
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 82.4 0.095
2001 65.7 0.094
2002 49.5 0.098
2003 34.9 0.104
2004 21.9 0.111
2005 10.5 0.117
2006 0.3 0.123
2007 350.8 0.127
2008 341.7 0.129
2009 332.9 0.130
2010 324.2 0.131
2011 315.5 0.131
2012 306.8 0.131
2013 298.2 0.131
2014 289.7 0.133
2015 281.4 0.135
2016 273.5 0.138
2017 265.9 0.142
2018 258.7 0.146
2019 252.1 0.152
2020 245.8 0.157
2021 240.1 0.163
2022 234.7 0.169
2023 229.7 0.175
2024 225.0 0.181
2025 220.6 0.187
2026 216.5 0.192
2027 212.5 0.196
2028 208.8 0.201
2029 205.1 0.204
2030 201.6 0.207


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



 
 


wds00462-2214b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic