00203-3246 B 1025 (HD 1620)

 
 
00h 20m 18.56s -32 46' 09.5" P.A. 178.00 sep 0.6 mag 8.83,10.64 Sp G6V dist. 53.3 pc (173.86 l.y.)
 
 
Coord 2000 00203-3246 Discov num B  1025 Comp Coord arcsec 2000 00 20 18.56 -32 46 09.5
Date first 1928 Date last 2019 Obs 9
Pa first 163 Pa last 177.5 P.A. Now (θ) 177.5°
Sep first 0.4 Sep last 0.582 Sep. Now (ρ) 0.582"
Mag pri 8.83 Mag sec 10.64 delta mag (ΔM) 1.81 Spectral class G6V (yellow)
Pri motion ra +260 Sec motion ra
Pri motion dec -087 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 1620 Constellation Sculptor SAO 192468 HIP 1625
Tycho2 6993-00130-1 Gaia DR2 2316176498665292544 HD 1620 CD CD-33 95
CP CP-33 33 Distance 53.3 Distance ly 173.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)126.11y Periastron (T)1920.97y Semi-major axis (a)0.609a
Eccentricity (e)0.544 Inclination (i)109.1° Longitude of periastron (ω)283.5°
Node (Ω)167.2° Notesn ReferenceHrt2012a
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 16.7 0.516
2001 15.6 0.524
2002 14.5 0.532
2003 13.5 0.540
2004 12.6 0.547
2005 11.6 0.555
2006 10.7 0.561
2007 9.8 0.568
2008 8.9 0.574
2009 8.0 0.580
2010 7.1 0.585
2011 6.3 0.590
2012 5.5 0.594
2013 4.6 0.598
2014 3.8 0.601
2015 3.0 0.604
2016 2.2 0.606
2017 1.4 0.607
2018 0.7 0.608
2019 359.9 0.608
2020 359.1 0.607
2021 358.3 0.605
2022 357.5 0.603
2023 356.7 0.599
2024 355.9 0.594
2025 355.0 0.589
2026 354.2 0.582
2027 353.3 0.574
2028 352.4 0.564
2029 351.5 0.553
2030 350.5 0.540


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



 
 


wds00203-3246a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic