02433+1926 BAG 20 (HD 16909)

 
 
02h 43m 20.92s +19° 25' 45.2" P.A. 211.00 sep 0.1 mag 8.20,11.30 Sp K3.5Vk dist. 18.88 pc (61.59 l.y.)
 
 
Coord 2000 02433+1926 Discov num BAG  20 Comp Coord arcsec 2000 02 43 20.92 +19 25 45.2
Date first 2001 Date last 2019 Obs 4
Pa first 20 Pa last 210.9 P.A. Now (θ) 210.9°
Sep first 0.1 Sep last 0.142 Sep. Now (ρ) 0.142"
Mag pri 8.20 Mag sec 11.30 delta mag (ΔM) 3.1 Spectral class K3.5Vk (yellow-orange)
Pri motion ra +435 Sec motion ra
Pri motion dec -016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 16909 Constellation Aries SAO 93072 HIP 12709
Tycho2 1226-00710-1 HD 16909 GC 3272 GL Gl 106
BD BD+18 339 Distance 18.88 Distance ly 61.59
 
 
ORBITAL ELEMENTS
 
 
Period (P)1214d (3.32y) Periastron (T)44185.5d (1979.852y) Semi-major axis (a)31.24m± 6.15
Eccentricity (e)0.521 Inclination (i)76.48°± 6.25 Longitude of periastron (ω)117°
Node (Ω)27.39°± 11.56 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 208.8 0.019
2001-01-01 328.5 0.012
2002-01-01 16.3 0.034
2003-01-01 63.8 0.006
2004-01-01 265.7 0.011
2005-01-01 9.5 0.029
2006-01-01 29.1 0.027
2007-01-01 228.3 0.017
2008-01-01 358.3 0.021
2009-01-01 22.3 0.035
2010-01-01 210.4 0.020
2011-01-01 332.4 0.013
2012-01-01 16.8 0.034
2013-01-01 86.9 0.004
2014-01-01 271.1 0.010
2015-01-01 10.2 0.029
2016-01-01 30.0 0.026
2017-01-01 230.4 0.017
2018-01-01 359.6 0.022
2019-01-01 22.8 0.035
2020-01-01 211.9 0.020
2021-01-01 335.9 0.013
2022-01-01 17.3 0.035
2023-01-01 128.6 0.004
2024-01-01 276.8 0.010
2025-01-01 10.8 0.030
2026-01-01 30.9 0.025
2027-01-01 232.6 0.016
2028-01-01 0.9 0.023
2029-01-01 23.3 0.034
2030-01-01 213.4 0.020


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


 
  


wds02433%2B1926r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic