19453-6823 HDS 2806 AB

 
 
19h 45m 15.54s -68 23' 22.3" P.A. 115.00 sep 0.4 mag 10.34,12.97 Sp K3 dist. 46.86 pc (152.86 l.y.)
 
 
Coord 2000 19453-6823 Discov num HDS2806 Comp AB Coord arcsec 2000 19 45 15.54 -68 23 22.3
Date first 1991 Date last 2021 Obs 20
Pa first 298 Pa last 114.9 P.A. Now (θ) 114.9°
Sep first 0.3 Sep last 0.38 Sep. Now (ρ) 0.38"
Mag pri 10.34 Mag sec 12.97 delta mag (ΔM) 2.63 Spectral class K3 (yellow-orange)
Pri motion ra +111 Sec motion ra
Pri motion dec +134 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19453-6823 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 19 45 16 -68 23 22 HDS 2806 AB 2021 20 115 0.4 10.34 12.97 2.63 Y <===
Show 19 45 16 -68 23 22 TOK 425 Ba,Bb 2020 14 103 0.1 13.20 15.00 1.80 Y
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo HIP 97196 Tycho2 9306-01188-1 Gaia DR2 6426760779929152896
HD 185655 CP CP-68 3294 Distance 46.86 Distance ly 152.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)84.4y± 1.8 Periastron (T)2001.55y± 0.86 Semi-major axis (a)0.475a± 0.027
Eccentricity (e)0.252± 0.016 Inclination (i)140° Longitude of periastron (ω)336.2°± 1.9
Node (Ω)204°± 2.6 Notesn ReferenceTok2021b
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 232.4 0.331
2001 226.0 0.339
2002 220.0 0.346
2003 214.1 0.353
2004 208.5 0.358
2005 203.0 0.362
2006 197.6 0.365
2007 192.3 0.367
2008 187.0 0.367
2009 181.7 0.367
2010 176.4 0.366
2011 171.0 0.364
2012 165.6 0.363
2013 160.2 0.361
2014 154.7 0.360
2015 149.2 0.360
2016 143.7 0.360
2017 138.2 0.361
2018 132.7 0.363
2019 127.3 0.366
2020 122.1 0.370
2021 117.0 0.376
2022 112.0 0.382
2023 107.2 0.389
2024 102.6 0.398
2025 98.2 0.406
2026 93.9 0.416
2027 89.9 0.426
2028 86.1 0.436
2029 82.4 0.447
2030 78.9 0.458


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



 
 


wds19453-6823c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic