00039-5750 I 700 (HD 225158)

 
 
00h 03m 54.07s -57° 49' 49.6" P.A. 359.00 sep 0.3 mag 9.12,9.68 Sp G2V dist. 74.74 pc (243.8 l.y.)
 
 
Coord 2000 00039-5750 Discov num I   700 Comp Coord arcsec 2000 00 03 54.07 -57 49 49.6
Date first 1911 Date last 2020 Obs 17
Pa first 80 Pa last 359.1 P.A. Now (θ) 359.1°
Sep first 0.5 Sep last 0.25 Sep. Now (ρ) 0.25"
Mag pri 9.12 Mag sec 9.68 delta mag (ΔM) 0.56 Spectral class G2V (yellow)
Pri motion ra +154 Sec motion ra +154
Pri motion dec -060 Sec motion dec -060
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 225158 Constellation Tucana SAO 231912 HIP 306
Tycho2 8470-00026-1 HD 225158 GC 25 CP CP-58 8128
Distance 74.74 Distance ly 243.8
 
 
ORBITAL ELEMENTS
 
 
Period (P)185y Periastron (T)2067.4y Semi-major axis (a)0.56a
Eccentricity (e)0.47 Inclination (i)68.4° Longitude of periastron (ω)231.3°
Node (Ω)80.7° Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 129.3 0.364
2001 130.8 0.355
2002 132.4 0.347
2003 134.1 0.339
2004 135.9 0.332
2005 137.7 0.324
2006 139.6 0.317
2007 141.7 0.309
2008 143.8 0.302
2009 146.0 0.296
2010 148.3 0.289
2011 150.7 0.283
2012 153.3 0.278
2013 155.9 0.273
2014 158.6 0.268
2015 161.4 0.264
2016 164.3 0.260
2017 167.3 0.257
2018 170.3 0.254
2019 173.4 0.252
2020 176.6 0.250
2021 179.7 0.249
2022 182.9 0.249
2023 186.1 0.249
2024 189.3 0.250
2025 192.5 0.252
2026 195.6 0.254
2027 198.6 0.256
2028 201.6 0.259
2029 204.5 0.263
2030 207.3 0.267


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



 
 


wds00039-5750a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic