20597-5211 I 669 AB (HD 199489)

 
 
20h 59m 40.24s -52° 10' 28.7" P.A. 67.00 sep 0.4 mag 9.01,9.51 Sp K0V dist. 40.67 pc (132.67 l.y.)
 
 
Coord 2000 20597-5211 Discov num I   669 Comp AB Coord arcsec 2000 20 59 40.24 -52 10 28.7
Date first 1909 Date last 2021 Obs 27
Pa first 70 Pa last 67.1 P.A. Now (θ) 66°
Sep first 0.4 Sep last 0.352 Sep. Now (ρ) 0.432"
Mag pri 9.01 Mag sec 9.51 delta mag (ΔM) 0.5 Spectral class K0V (yellow-orange)
Pri motion ra +158 Sec motion ra
Pri motion dec -173 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20597-5211 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 199489 246818 20 59 40 -52 10 29 I 669 AB 2021 27 67 0.4 9.01 9.51 0.50 Y <===
Show 246818 20 59 40 -52 10 29 I 669 AC 1999 2 282 33.4 9.01 15.00 5.99
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 199489 Constellation Indus SAO 246818 HIP 103620
Tycho2 8420-01257-1 HD 199489 CD CD-52 9711 CP CP-5211799
Distance 40.67 Distance ly 132.67
 
 
ORBITAL ELEMENTS
 
 
Period (P)113.6y± 1.3 Periastron (T)2010.62y± 0.47 Semi-major axis (a)0.684a± 0.007
Eccentricity (e)0.613± 0.012 Inclination (i)93.66°± 0.18 Longitude of periastron (ω)207.6°± 2.7
Node (Ω)63.02°± 0.31 Notes ReferenceMdz2017
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 259.7 0.111
2001 255.0 0.142
2002 251.9 0.173
2003 249.8 0.202
2004 248.2 0.229
2005 246.9 0.252
2006 245.8 0.270
2007 244.8 0.281
2008 243.9 0.284
2009 242.9 0.276
2010 241.9 0.254
2011 240.6 0.220
2012 238.6 0.175
2013 235.1 0.122
2014 225.6 0.064
2015 153.7 0.021
2016 83.4 0.065
2017 74.0 0.123
2018 70.7 0.181
2019 68.9 0.236
2020 67.8 0.289
2021 67.1 0.339
2022 66.5 0.387
2023 66.0 0.432
2024 65.7 0.475
2025 65.4 0.515
2026 65.1 0.554
2027 64.9 0.590
2028 64.7 0.624
2029 64.5 0.657
2030 64.3 0.687


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



 
 


wds20597-5211e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic