09457-3902 HDS 1409

 
 
09h 45m 40.09s -39 02' 26.4" P.A. 41.00 sep 0.6 mag 12.64,13.18 dist. 20.21 pc (65.93 l.y.)
 
 
Coord 2000 09457-3902 Discov num HDS1409 Comp Coord arcsec 2000 09 45 40.09 -39 02 26.4
Date first 1991 Date last 2021 Obs 7
Pa first 29 Pa last 40.5 P.A. Now (θ) 40.5°
Sep first 0.5 Sep last 0.592 Sep. Now (ρ) 0.592"
Mag pri 12.64 Mag sec 13.18 delta mag (ΔM) 0.54 Spectral class
Pri motion ra -126 Sec motion ra
Pri motion dec -236 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Antlia HIP 47890 Distance 20.21 Distance ly 65.93
 
 
ORBITAL ELEMENTS
 
 
Period (P)33.98y Periastron (T)1997.383y Semi-major axis (a)0.497a
Eccentricity (e)0.479 Inclination (i)112.4° Longitude of periastron (ω)121°
Node (Ω)29.1° Notesn ReferenceTok2018e
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 203.3 0.328
2001 195.5 0.337
2002 187.5 0.326
2003 178.8 0.306
2004 168.7 0.283
2005 156.9 0.262
2006 143.3 0.248
2007 128.7 0.244
2008 114.3 0.252
2009 101.3 0.270
2010 90.4 0.297
2011 81.5 0.330
2012 74.2 0.365
2013 68.2 0.400
2014 63.2 0.436
2015 58.9 0.469
2016 55.1 0.500
2017 51.8 0.527
2018 48.8 0.550
2019 46.0 0.568
2020 43.4 0.580
2021 40.8 0.585
2022 38.2 0.583
2023 35.6 0.572
2024 32.8 0.550
2025 29.8 0.517
2026 26.2 0.469
2027 21.6 0.405
2028 14.9 0.323
2029 2.8 0.222
2030 329.9 0.123


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



 
 


wds09457-3902a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic