01259-4754 RST 33 AB (HD 8821)

 
 
01h 25m 56.10s -47 53' 55.9" P.A. 302.00 sep 1.1 mag 8.13,9.77 Sp K0V dist. 37.68 pc (122.91 l.y.)
 
 
Coord 2000 01259-4754 Discov num RST  33 Comp AB Coord arcsec 2000 01 25 56.10 -47 53 55.9
Date first 1928 Date last 2016 Obs 40
Pa first 227 Pa last 302.4 P.A. Now (θ) 302.4°
Sep first 0.5 Sep last 1.12 Sep. Now (ρ) 1.12"
Mag pri 8.13 Mag sec 9.77 delta mag (ΔM) 1.64 Spectral class K0V (yellow-orange)
Pri motion ra -019 Sec motion ra -019
Pri motion dec -130 Sec motion dec -130
Notes O (Orbital solution)
This double is physical.
 
 
01259-4754 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 8821 215503 01 25 56 -47 53 56 RST 33 AB 2016 40 302 1.1 8.13 9.77 1.64 Y <===
Show 215503 01 25 56 -47 53 56 KPP 4348 AC 2016 4 3 18.2 8.60 14.30 5.70
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 8821 Constellation Phoenix SAO 215503 HIP 6693
Tycho2 8036-00856-1 HD 8821 CD CD-48 367 CP CP-48 165
Distance 37.68 Distance ly 122.91
 
 
ORBITAL ELEMENTS
 
 
Period (P)175.3379y± 9.2102 Periastron (T)1951.4746y± 0.6665 Semi-major axis (a)0.91477a± 0.04416
Eccentricity (e)0.79785± 0.02203 Inclination (i)123.438°± 2.86 Longitude of periastron (ω)67.124°± 2.903
Node (Ω)155.63°± 2.555 Notes ReferenceIzm2019
Equinox Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 301.8 1.080
2001 301.3 1.084
2002 300.9 1.087
2003 300.4 1.090
2004 299.9 1.093
2005 299.4 1.096
2006 298.9 1.098
2007 298.5 1.100
2008 298.0 1.102
2009 297.5 1.103
2010 297.1 1.104
2011 296.6 1.105
2012 296.1 1.106
2013 295.7 1.106
2014 295.2 1.107
2015 294.7 1.107
2016 294.3 1.107
2017 293.8 1.106
2018 293.3 1.106
2019 292.9 1.105
2020 292.4 1.104
2021 291.9 1.103
2022 291.5 1.102
2023 291.0 1.100
2024 290.5 1.098
2025 290.0 1.097
2026 289.6 1.094
2027 289.1 1.092
2028 288.6 1.090
2029 288.1 1.087
2030 287.6 1.084


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



 
 


wds01259-4754b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic