21439+2751 HO 166 (HD 206792)

 
 
21h 43m 54.25s +27° 50' 48.8" P.A. 233.00 sep 0.2 mag 8.36,8.25 Sp F6V dist. 95.15 pc (310.38 l.y.)
 
 
Coord 2000 21439+2751 Discov num HO  166 Comp Coord arcsec 2000 21 43 54.25 +27 50 48.8
Date first 1886 Date last 2021 Obs 188
Pa first 124 Pa last 233.3 P.A. Now (θ) 207.8° (calc)
Sep first 0.4 Sep last 0.21 Sep. Now (ρ) 0.215" (calc)
Mag pri 8.36 Mag sec 8.25 delta mag (ΔM) 0.11 Spectral class F6V (yellow-white)
Pri motion ra +102 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 206792 Constellation Pegasus SAO 89934 HIP 107288
Tycho2 2197-00288-1 Gaia DR2 1800951603363799936 HD 206792 ADS 15267
BD BD+27 4145 Distance 95.15 Distance ly 310.38
 
 
ORBITAL ELEMENTS
 
 
Period (P)78.91y± 1.2 Periastron (T)2014.029y± 0.08 Semi-major axis (a)0.28a± 0.002
Eccentricity (e)0.275± 0.007 Inclination (i)145.5°± 0.5 Longitude of periastron (ω)162.7°± 1
Node (Ω)91.4°± 1 Notesn ReferenceDoc2024b
Equinox2000 Last observation2023 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 28.5 0.227
2001 22.8 0.219
2002 16.7 0.211
2003 10.1 0.204
2004 3.1 0.198
2005 355.7 0.194
2006 348.0 0.190
2007 340.1 0.188
2008 332.1 0.187
2009 324.0 0.188
2010 316.0 0.189
2011 308.2 0.192
2012 300.6 0.194
2013 293.2 0.197
2014 286.0 0.200
2015 279.0 0.203
2016 272.2 0.205
2017 265.5 0.206
2018 258.9 0.208
2019 252.3 0.209
2020 245.8 0.209
2021 239.4 0.210
2022 233.0 0.210
2023 226.6 0.211
2024 220.2 0.212
2025 213.9 0.213
2026 207.8 0.215
2027 201.7 0.218
2028 195.8 0.221
2029 190.1 0.225
2030 184.6 0.229
2031 179.4 0.234
2032 174.3 0.240
2033 169.5 0.246
2034 164.9 0.252
2035 160.6 0.258
2036 156.4 0.265
2037 152.5 0.272
2038 148.7 0.278
2039 145.2 0.285
2040 141.7 0.292
2041 138.5 0.298
2042 135.4 0.304
2043 132.4 0.311
2044 129.5 0.316
2045 126.7 0.322
2046 124.0 0.327
2047 121.4 0.332
2048 118.8 0.336
2049 116.4 0.340
2050 113.9 0.343


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds21439%2B2751c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic