13387-7011 DON 609 (HD 118326)

 
 
13h 38m 45.04s -70° 11' 11.7" P.A. 193.00 sep 0.1 mag 9.73,10.55 Sp A9IV: dist. 540.54 pc (1763.24 l.y.)
 
 
Coord 2000 13387-7011 Discov num DON 609 Comp Coord arcsec 2000 13 38 45.04 -70 11 11.7
Date first 1931 Date last 2020 Obs 7
Pa first 313 Pa last 193 P.A. Now (θ) 193°
Sep first 0.2 Sep last 0.058 Sep. Now (ρ) 0.058"
Mag pri 9.73 Mag sec 10.55 delta mag (ΔM) 0.82 Spectral class A9IV: (white)
Pri motion ra -034 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 118326 Constellation Musca HIP 66572 Tycho2 9247-00156-1
Gaia DR2 5841110476943005184 HD 118326 CP CP-69 1899 Distance 540.54
Distance ly 1763.24
 
 
ORBITAL ELEMENTS
 
 
Period (P)620y Periastron (T)1999.86y Semi-major axis (a)0.336a
Eccentricity (e)0.5 Inclination (i)107.6° Longitude of periastron (ω)237.7°
Node (Ω)123.5° Notes ReferenceTok2021f
Equinox Last observation2020 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 277.7 0.099
2001 275.9 0.095
2002 273.9 0.091
2003 271.7 0.087
2004 269.3 0.083
2005 266.7 0.079
2006 263.8 0.075
2007 260.6 0.072
2008 257.1 0.068
2009 253.3 0.065
2010 249.0 0.062
2011 244.4 0.060
2012 239.4 0.058
2013 234.0 0.056
2014 228.4 0.054
2015 222.5 0.054
2016 216.5 0.053
2017 210.5 0.054
2018 204.7 0.055
2019 199.1 0.056
2020 193.8 0.058
2021 188.8 0.060
2022 184.3 0.063
2023 180.1 0.066
2024 176.3 0.069
2025 172.9 0.072
2026 169.8 0.076
2027 166.9 0.080
2028 164.4 0.084
2029 162.0 0.088
2030 159.9 0.092


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


 
  


wds13387-7011a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic