03140+0044 STF 367 (HD 20115)

03h 14m 02.91s +00° 44' 21.3" P.A. 129.00 sep 1.3 mag 8.14,8.17 Sp F8 dist. 65.75 pc (214.48 l.y.)

Coord 2000 03140+0044 Discov num STF 367 Comp Coord arcsec 2000 03 14 02.91 +00 44 21.3
Date first 1831 Date last 2018 Obs 171
Pa first 281 Pa last 129.2 P.A. Now (θ) 128.4°
Sep first 1.0 Sep last 1.293 Sep. Now (ρ) 1.274"
Mag pri 8.14 Mag sec 8.17 delta mag (ΔM) 0.03 Spectral class F8 (yellow-white)
Pri motion ra +076 Sec motion ra +076
Pri motion dec -014 Sec motion dec -014
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 20115 Constellation Cetus SAO 111062 HIP 15058
Tycho2 0056-00850-1 Gaia DR2 3266941486151475456 HD 20115 GC 3862
ADS 2416 BD BD+00 542 Distance 65.75 Distance ly 214.48




ORBITAL ELEMENTS

Period (P)370.1079y± 112.7762 Periastron (T)1838.1867y± 8.3312 Semi-major axis (a)1.0048a± 0.10748
Eccentricity (e)0.4734± 0.14413 Inclination (i)127.821°± 11.928 Longitude of periastron (ω)139.915°± 30.091
Node (Ω)101.034°± 5.698 Notes ReferenceIzm2019
Equinox Last observation2015 Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 136.5 1.172
2001 136.2 1.177
2002 135.8 1.182
2003 135.4 1.187
2004 135.0 1.192
2005 134.7 1.197
2006 134.3 1.202
2007 133.9 1.206
2008 133.6 1.211
2009 133.2 1.216
2010 132.8 1.220
2011 132.5 1.225
2012 132.1 1.229
2013 131.8 1.234
2014 131.4 1.238
2015 131.1 1.242
2016 130.7 1.246
2017 130.4 1.251
2018 130.1 1.255
2019 129.7 1.259
2020 129.4 1.262
2021 129.1 1.266
2022 128.7 1.270
2023 128.4 1.274
2024 128.1 1.277
2025 127.8 1.281
2026 127.4 1.284
2027 127.1 1.288
2028 126.8 1.291
2029 126.5 1.294
2030 126.2 1.298


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



 
 


wds03140%2B0044e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic