21410+2920 STT 448 (HD 206373)

 
 
21h 41m 00.68s +29° 20' 25.5" P.A. 31.00 sep 0.1 mag 8.93,9.17 Sp G0V dist. 103.95 pc (339.08 l.y.)
 
 
Coord 2000 21410+2920 Discov num STT 448 Comp Coord arcsec 2000 21 41 00.68 +29 20 25.5
Date first 1843 Date last 2014 Obs 92
Pa first 245 Pa last 31.2 P.A. Now (θ) 301.7° (calc)
Sep first 0.6 Sep last 0.1 Sep. Now (ρ) 0.239" (calc)
Mag pri 8.93 Mag sec 9.17 delta mag (ΔM) 0.24 Spectral class G0V (yellow)
Pri motion ra +073 Sec motion ra +073
Pri motion dec -014 Sec motion dec -014
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 206373 Constellation Cygnus SAO 89904 HIP 107060
Tycho2 2201-01184-1 Gaia DR2 1849340525986765312 HD 206373 ADS 15215
BD BD+28 4162 Distance 103.95 Distance ly 339.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)251.6y± 25.4 Periastron (T)2013.61y± 0.1 Semi-major axis (a)0.464a± 0.025
Eccentricity (e)0.805± 0.01 Inclination (i)159.3°± 0.5 Longitude of periastron (ω)325°± 5
Node (Ω)22.6°± 5 Notes ReferenceDoc2025a
Equinox Last observation2023 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 178.8 0.269
2001 176.3 0.254
2002 173.4 0.240
2003 170.3 0.225
2004 166.6 0.209
2005 162.4 0.194
2006 157.4 0.177
2007 151.5 0.161
2008 144.1 0.145
2009 135.0 0.129
2010 123.4 0.114
2011 108.7 0.102
2012 90.3 0.092
2013 69.2 0.088
2014 47.4 0.090
2015 27.5 0.096
2016 10.6 0.106
2017 356.8 0.117
2018 345.6 0.130
2019 336.4 0.144
2020 328.8 0.157
2021 322.5 0.171
2022 317.1 0.185
2023 312.5 0.199
2024 308.4 0.212
2025 304.9 0.226
2026 301.7 0.239
2027 298.8 0.252
2028 296.3 0.264
2029 293.9 0.276
2030 291.8 0.289
2031 289.8 0.300
2032 288.0 0.312
2033 286.3 0.323
2034 284.7 0.334
2035 283.2 0.345
2036 281.8 0.356
2037 280.5 0.367
2038 279.3 0.377
2039 278.1 0.387
2040 277.0 0.397
2041 275.9 0.407
2042 274.9 0.416
2043 274.0 0.425
2044 273.0 0.435
2045 272.2 0.444
2046 271.3 0.453
2047 270.5 0.461
2048 269.7 0.470
2049 268.9 0.478
2050 268.2 0.486


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds21410%2B2920c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic