20176+2622 BU 984 (HD 193095)

 
 
20h 17m 34.66s +26° 22' 13.0" P.A. 160.00 sep 0.2 mag 8.22,9.39 Sp F8
 
 
Coord 2000 20176+2622 Discov num BU  984 Comp Coord arcsec 2000 20 17 34.66 +26 22 13.0
Date first 1880 Date last 2012 Obs 102
Pa first 204 Pa last 159.7 P.A. Now (θ) 159.7°
Sep first 0.9 Sep last 0.161 Sep. Now (ρ) 0.161"
Mag pri 8.22 Mag sec 9.39 delta mag (ΔM) 1.17 Spectral class F8 (yellow-white)
Pri motion ra -008 Sec motion ra -008
Pri motion dec -078 Sec motion dec -078
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193095 Constellation Vulpecula SAO 88471 Tycho2 2163-00157-1
Gaia DR2 1835491008821431296 HD 193095 ADS 13649
 
 
ORBITAL ELEMENTS
 
 
Period (P)286.5759y± 28.928 Periastron (T)2080.014y± 9.62 Semi-major axis (a)0.8a± 0.0523
Eccentricity (e)0.0885± 0.0774 Inclination (i)70.19°± 7.45 Longitude of periastron (ω)2.98°± 14.6
Node (Ω)43.99°± 3.16 Notes ReferencePop2000a
Equinox2000 Last observation1994 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 271.5 0.360
2001 273.6 0.349
2002 275.9 0.339
2003 278.3 0.330
2004 280.9 0.321
2005 283.6 0.313
2006 286.5 0.305
2007 289.5 0.298
2008 292.6 0.291
2009 295.9 0.285
2010 299.3 0.281
2011 302.8 0.277
2012 306.3 0.273
2013 310.0 0.271
2014 313.7 0.270
2015 317.4 0.270
2016 321.1 0.271
2017 324.8 0.273
2018 328.4 0.276
2019 331.9 0.280
2020 335.3 0.284
2021 338.6 0.290
2022 341.8 0.296
2023 344.8 0.303
2024 347.7 0.311
2025 350.4 0.319
2026 353.0 0.328
2027 355.5 0.337
2028 357.8 0.347
2029 0.357
2030 2.1 0.367


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



 
 


wds20176%2B2622a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic