22052+2952 A 893 (HD 209745)

 
 
22h 05m 09.05s +29° 52' 03.2" P.A. 229.00 sep 0.2 mag 9.10,10.37 Sp F8V dist. 128.7 pc (419.82 l.y.)
 
 
Coord 2000 22052+2952 Discov num A   893 Comp Coord arcsec 2000 22 05 09.05 +29 52 03.2
Date first 1904 Date last 2013 Obs 29
Pa first 243 Pa last 228.8 P.A. Now (θ) 215.1°
Sep first 0.2 Sep last 0.199 Sep. Now (ρ) 0.281"
Mag pri 9.10 Mag sec 10.37 delta mag (ΔM) 1.27 Spectral class F8V (yellow-white)
Pri motion ra +041 Sec motion ra
Pri motion dec -015 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 209745 Constellation Pegasus SAO 90215 HIP 109018
Tycho2 2216-00061-1 Gaia DR2 1896749543230641408 HD 209745 ADS 15610
BD BD+29 4578 Distance 128.7 Distance ly 419.82
 
 
ORBITAL ELEMENTS
 
 
Period (P)105.9y Periastron (T)1990.8y Semi-major axis (a)0.225a
Eccentricity (e)0.438 Inclination (i)147.7° Longitude of periastron (ω)190.1°
Node (Ω)195.3° Notes ReferenceFMR2014a
Equinox2000 Last observation2012 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 291.9 0.138
2001 285.3 0.143
2002 279.1 0.148
2003 273.4 0.155
2004 268.1 0.161
2005 263.3 0.168
2006 258.9 0.175
2007 254.8 0.182
2008 251.0 0.189
2009 247.5 0.197
2010 244.2 0.204
2011 241.2 0.211
2012 238.3 0.218
2013 235.6 0.224
2014 233.1 0.231
2015 230.7 0.237
2016 228.5 0.244
2017 226.3 0.249
2018 224.2 0.255
2019 222.3 0.261
2020 220.4 0.266
2021 218.6 0.271
2022 216.8 0.276
2023 215.1 0.281
2024 213.5 0.285
2025 211.9 0.289
2026 210.4 0.293
2027 208.9 0.297
2028 207.4 0.300
2029 206.0 0.303
2030 204.6 0.306


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



 
 


wds22052%2B2952a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic