19200-1435 RST 4037 (HD 181191)

 
 
19h 20m 01.11s -14° 34' 41.5" P.A. 241.00 sep 0.2 mag 9.50,9.50 Sp F6/7V
 
 
Coord 2000 19200-1435 Discov num RST4037 Comp Coord arcsec 2000 19 20 01.11 -14 34 41.5
Date first 1938 Date last 2022 Obs 10
Pa first 109 Pa last 240.6 P.A. Now (θ) 235.5°
Sep first 0.2 Sep last 0.206 Sep. Now (ρ) 0.209"
Mag pri 9.50 Mag sec 9.50 delta mag (ΔM) 0 Spectral class F6/7V (yellow-white)
Pri motion ra +012 Sec motion ra
Pri motion dec +005 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 181191 Constellation Sagittarius SAO 162480 Tycho2 5721-01550-1
Gaia DR2 4184766582750579200 HD 181191
 
 
ORBITAL ELEMENTS
 
 
Period (P)311.8y Periastron (T)2025.525y Semi-major axis (a)0.277a
Eccentricity (e)0.256 Inclination (i)58.8° Longitude of periastron (ω)192.1°
Node (Ω)57.6° Notes ReferenceTok2023a
Equinox2000 Last observation2022 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 216.4 0.190
2001 217.6 0.192
2002 218.8 0.194
2003 220.0 0.195
2004 221.1 0.197
2005 222.2 0.198
2006 223.4 0.200
2007 224.5 0.201
2008 225.6 0.202
2009 226.6 0.203
2010 227.7 0.204
2011 228.8 0.205
2012 229.8 0.206
2013 230.9 0.206
2014 231.9 0.207
2015 232.9 0.207
2016 234.0 0.207
2017 235.0 0.207
2018 236.0 0.207
2019 237.1 0.207
2020 238.1 0.207
2021 239.2 0.206
2022 240.2 0.206
2023 241.2 0.205
2024 242.3 0.204
2025 243.4 0.203
2026 244.5 0.202
2027 245.5 0.201
2028 246.6 0.200
2029 247.8 0.198
2030 248.9 0.197
2031 250.1 0.195
2032 251.2 0.193
2033 252.4 0.191
2034 253.7 0.189
2035 254.9 0.187
2036 256.2 0.185
2037 257.5 0.183
2038 258.9 0.180
2039 260.3 0.178
2040 261.7 0.175
2041 263.2 0.173
2042 264.7 0.170
2043 266.2 0.168
2044 267.8 0.165
2045 269.5 0.162
2046 271.2 0.160
2047 273.0 0.157
2048 274.8 0.155
2049 276.7 0.152
2050 278.6 0.150


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds19200-1435a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic