16425-3705 R 283 (HD 150420)

 
 
16h 42m 29.08s -37° 04' 45.7" P.A. 247.00 sep 0.8 mag 6.98,7.83 Sp G3III dist. 94.79 pc (309.2 l.y.)
 
 
Coord 2000 16425-3705 Discov num R   283 Comp Coord arcsec 2000 16 42 29.08 -37 04 45.7
Date first 1881 Date last 2019 Obs 46
Pa first 88 Pa last 247.1 P.A. Now (θ) 247.1°
Sep first 0.4 Sep last 0.847 Sep. Now (ρ) 0.847"
Mag pri 6.98 Mag sec 7.83 delta mag (ΔM) 0.85 Spectral class G3III (yellow)
Pri motion ra -028 Sec motion ra -028
Pri motion dec -089 Sec motion dec -089
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 150420 Constellation Scorpius SAO 207943 HIP 81803
Tycho2 7358-00528-1 Gaia DR2 6019299599085388160 HD 150420 GC 22459
CD CD-3610916 CP CP-36 7024 Distance 94.79 Distance ly 309.2
 
 
ORBITAL ELEMENTS
 
 
Period (P)691y Periastron (T)1965.72y Semi-major axis (a)1.3a
Eccentricity (e)0.656 Inclination (i)122° Longitude of periastron (ω)91.6°
Node (Ω)72.1° Notesn ReferenceAry2015b
Equinox2000 Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 255.0 0.684
2001 254.2 0.695
2002 253.5 0.706
2003 252.8 0.717
2004 252.1 0.727
2005 251.5 0.737
2006 250.8 0.747
2007 250.2 0.757
2008 249.6 0.766
2009 249.0 0.775
2010 248.4 0.784
2011 247.9 0.793
2012 247.3 0.802
2013 246.8 0.810
2014 246.2 0.818
2015 245.7 0.826
2016 245.2 0.834
2017 244.7 0.842
2018 244.2 0.849
2019 243.7 0.857
2020 243.2 0.864
2021 242.8 0.871
2022 242.3 0.877
2023 241.9 0.884
2024 241.4 0.890
2025 241.0 0.897
2026 240.5 0.903
2027 240.1 0.909
2028 239.7 0.915
2029 239.3 0.921
2030 238.9 0.926


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



 
 


wds16425-3705b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic