03160-0555 BU 84 (NSV1090)

 
 
03h 16m 00.86s -05° 55' 07.3" P.A. 7.00 sep 1.0 mag 6.38,7.93 Sp B9V dist. 201.61 pc (657.65 l.y.)
 
 
Coord 2000 03160-0555 Discov num BU   84 Comp Coord arcsec 2000 03 16 00.86 -05 55 07.3
Date first 1872 Date last 2012 Obs 60
Pa first 20 Pa last 7.1 P.A. Now (θ) 7.1°
Sep first 0.5 Sep last 0.956 Sep. Now (ρ) 0.956"
Mag pri 6.38 Mag sec 7.93 delta mag (ΔM) 1.55 Spectral class B9V (blue-white)
Pri motion ra +008 Sec motion ra +008
Pri motion dec -008 Sec motion dec -008
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV1090 Constellation Eridanus SAO 130388 HIP 15203
Tycho2 4714-01219-1 Gaia DR2 5181583893199538048 HD 20319 HR 983
GC 3907 ADS 2440 BD BD-06 636 Distance 201.61
Distance ly 657.65
 
 
ORBITAL ELEMENTS
 
 
Period (P)1129.394y± 544.4601 Periastron (T)2086.0595y± 42.4277 Semi-major axis (a)2.20836a± 1.30436
Eccentricity (e)0.76942± 0.21029 Inclination (i)97.332°± 6.969 Longitude of periastron (ω)252.208°± 22.395
Node (Ω)179.628°± 4.846 Notes ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 8.9 0.991
2001 8.7 0.991
2002 8.6 0.992
2003 8.5 0.992
2004 8.3 0.993
2005 8.2 0.993
2006 8.1 0.993
2007 8.0 0.994
2008 7.8 0.994
2009 7.7 0.994
2010 7.6 0.993
2011 7.4 0.993
2012 7.3 0.993
2013 7.2 0.992
2014 7.1 0.992
2015 6.9 0.991
2016 6.8 0.990
2017 6.7 0.989
2018 6.5 0.988
2019 6.4 0.987
2020 6.3 0.986
2021 6.2 0.984
2022 6.0 0.983
2023 5.9 0.981
2024 5.8 0.979
2025 5.6 0.977
2026 5.5 0.975
2027 5.4 0.972
2028 5.2 0.970
2029 5.1 0.967
2030 5.0 0.964


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



 
 


wds03160-0555a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic