18567-5102 RST 5456 (HD 175146)

 
 
18h 56m 41.04s -51° 01' 38.4" P.A. 124.00 sep 0.2 mag 8.75,10.14 Sp F2/3V dist. 139.28 pc (454.33 l.y.)
 
 
Coord 2000 18567-5102 Discov num RST5456 Comp Coord arcsec 2000 18 56 41.04 -51 01 38.4
Date first 1946 Date last 2021 Obs 8
Pa first 296 Pa last 123.5 P.A. Now (θ) 123.5°
Sep first 0.2 Sep last 0.194 Sep. Now (ρ) 0.194"
Mag pri 8.75 Mag sec 10.14 delta mag (ΔM) 1.39 Spectral class F2/3V (yellow-white)
Pri motion ra -004 Sec motion ra
Pri motion dec -047 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 175146 Constellation Telescopium SAO 245820 HIP 92991
Tycho2 8386-01015-1 Gaia DR2 6660827082994549632 HD 175146 CD CD-5111834
CP CP-5111062 Distance 139.28 Distance ly 454.33
 
 
ORBITAL ELEMENTS
 
 
Period (P)77.5y± 5.9 Periastron (T)1979y± 4.4 Semi-major axis (a)0.169a± 0.007
Eccentricity (e)0.17± 0.06 Inclination (i)135°± 6.3 Longitude of periastron (ω)154°± 23
Node (Ω)120.7°± 5.1 Notes ReferenceTok2021f
Equinox Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 210.7 0.125
2001 204.9 0.127
2002 199.3 0.130
2003 193.9 0.132
2004 188.7 0.136
2005 183.8 0.139
2006 179.2 0.143
2007 174.9 0.148
2008 170.7 0.152
2009 166.8 0.156
2010 163.1 0.161
2011 159.6 0.165
2012 156.3 0.169
2013 153.2 0.173
2014 150.1 0.177
2015 147.2 0.180
2016 144.4 0.183
2017 141.7 0.186
2018 139.1 0.189
2019 136.5 0.191
2020 134.0 0.192
2021 131.5 0.194
2022 129.1 0.194
2023 126.6 0.195
2024 124.2 0.195
2025 121.7 0.194
2026 119.3 0.193
2027 116.8 0.191
2028 114.2 0.189
2029 111.6 0.187
2030 108.9 0.184
2031 106.1 0.180
2032 103.2 0.176
2033 100.2 0.172
2034 97.0 0.167
2035 93.6 0.162
2036 89.9 0.157
2037 86.1 0.151
2038 81.9 0.146
2039 77.3 0.140
2040 72.4 0.134
2041 67.0 0.128
2042 61.1 0.123
2043 54.8 0.118
2044 47.9 0.114
2045 40.6 0.111
2046 32.9 0.108
2047 24.9 0.107
2048 16.9 0.107
2049 8.9 0.108
2050 1.1 0.110


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



 
 


wds18567-5102a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic