17535-0355 TOK 54 (HD 162905)

 
 
17h 53m 32.26s -03° 54' 55.3" P.A. 251.00 sep 0.1 mag 9.60,10.50 Sp K0
 
 
Coord 2000 17535-0355 Discov num TOK  54 Comp Coord arcsec 2000 17 53 32.26 -03 54 55.3
Date first 2009 Date last 2023 Obs 13
Pa first 149 Pa last 250.5 P.A. Now (θ) 250.5°
Sep first 0.1 Sep last 0.092 Sep. Now (ρ) 0.092"
Mag pri 9.60 Mag sec 10.50 delta mag (ΔM) 0.9 Spectral class K0 (yellow-orange)
Pri motion ra -038 Sec motion ra
Pri motion dec -056 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 162905 Constellation Ophiuchus SAO 141948 Tycho2 5091-00144-1
Gaia DR2 4175947159460432384 HD 162905
 
 
ORBITAL ELEMENTS
 
 
Period (P)47.309y Periastron (T)2032.612y Semi-major axis (a)0.0928a
Eccentricity (e)0.242 Inclination (i)180° Longitude of periastron (ω)
Node (Ω)151.1° Notesn ReferenceTok2024c
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 16.7 0.105
2001 11.1 0.107
2002 5.7 0.109
2003 0.4 0.111
2004 355.3 0.112
2005 350.3 0.113
2006 345.3 0.114
2007 340.5 0.115
2008 335.7 0.115
2009 330.9 0.115
2010 326.1 0.115
2011 321.3 0.115
2012 316.4 0.114
2013 311.5 0.113
2014 306.5 0.112
2015 301.4 0.111
2016 296.1 0.109
2017 290.6 0.107
2018 285.0 0.105
2019 279.1 0.103
2020 272.9 0.100
2021 266.4 0.097
2022 259.5 0.095
2023 252.2 0.092
2024 244.3 0.089
2025 235.9 0.086
2026 226.9 0.082
2027 217.2 0.080
2028 206.8 0.077
2029 195.7 0.075
2030 184.0 0.073
2031 171.6 0.071
2032 159.0 0.070
2033 146.1 0.070
2034 133.4 0.071
2035 121.0 0.072
2036 109.1 0.074
2037 97.8 0.076
2038 87.2 0.079
2039 77.4 0.082
2040 68.2 0.085
2041 59.7 0.088
2042 51.7 0.091
2043 44.3 0.094
2044 37.3 0.097
2045 30.7 0.100
2046 24.5 0.102
2047 18.5 0.104
2048 12.8 0.107
2049 7.3 0.109
2050 2.0 0.110


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17535-0355b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic