20231+2052 A 288 (HD 194113)

 
 
20h 23m 08.98s +20 51' 51.1" P.A. 296.00 sep 0.2 mag 8.72,8.98 Sp F2 dist. 251.89 pc (821.67 l.y.)
 
 
Coord 2000 20231+2052 Discov num A   288 Comp Coord arcsec 2000 20 23 08.98 +20 51 51.1
Date first 1901 Date last 2012 Obs 42
Pa first 352 Pa last 295.6 P.A. Now (θ) 311.5°
Sep first 0.3 Sep last 0.196 Sep. Now (ρ) 0.232"
Mag pri 8.72 Mag sec 8.98 delta mag (ΔM) 0.26 Spectral class F2 (yellow-white)
Pri motion ra +012 Sec motion ra
Pri motion dec +005 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194113 Constellation Delphinus SAO 88610 HIP 100536
Tycho2 1643-02278-1 HD 194113 ADS 13777 BD BD+20 4541
Distance 251.89 Distance ly 821.67
 
 
ORBITAL ELEMENTS
 
 
Period (P)163.2y Periastron (T)1979.2y Semi-major axis (a)0.206a
Eccentricity (e)0.533 Inclination (i)30° Longitude of periastron (ω)138.6°
Node (Ω)24.5° Notesn ReferenceDoc1994d
Equinox Last observation1991 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 269.0 0.158
2001 271.7 0.162
2002 274.3 0.165
2003 276.7 0.168
2004 279.1 0.172
2005 281.4 0.175
2006 283.6 0.179
2007 285.7 0.182
2008 287.7 0.185
2009 289.7 0.189
2010 291.6 0.192
2011 293.4 0.195
2012 295.2 0.199
2013 296.9 0.202
2014 298.6 0.205
2015 300.2 0.208
2016 301.7 0.211
2017 303.2 0.214
2018 304.7 0.217
2019 306.1 0.220
2020 307.5 0.223
2021 308.9 0.226
2022 310.2 0.229
2023 311.5 0.232
2024 312.8 0.235
2025 314.0 0.237
2026 315.2 0.240
2027 316.4 0.243
2028 317.5 0.245
2029 318.7 0.248
2030 319.8 0.250


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



 
 


wds20231%2B2052a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic