20537+5918 A 751 (HD 199306)

 
 
20h 53m 41.31s +59° 18' 27.7" P.A. 52.00 sep 0.2 mag 7.66,7.96 Sp F1V+F3V dist. 119.9 pc (391.11 l.y.)
 
 
Coord 2000 20537+5918 Discov num A   751 Comp Coord arcsec 2000 20 53 41.31 +59 18 27.7
Date first 1904 Date last 2011 Obs 81
Pa first 34 Pa last 52.4 P.A. Now (θ) 21.8°
Sep first 0.2 Sep last 0.195 Sep. Now (ρ) 0.162"
Mag pri 7.66 Mag sec 7.96 delta mag (ΔM) 0.3 Spectral class F1V+F3V (yellow-white/yellow-white)
Pri motion ra +037 Sec motion ra
Pri motion dec -021 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 199306 Constellation Cepheus SAO 32976 HIP 103130
Tycho2 3964-01130-1 Gaia DR2 2190848700139092224 HD 199306 GC 29181
ADS 14412 BD BD+58 2187 Distance 119.9 Distance ly 391.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)56.87y Periastron (T)1976.04y Semi-major axis (a)0.169a
Eccentricity (e)0.591 Inclination (i)130.6° Longitude of periastron (ω)276.2°
Node (Ω)177.3° Notesn ReferenceSca2013b
Equinox2000 Last observation2011 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 91.8 0.172
2001 88.6 0.173
2002 85.5 0.174
2003 82.4 0.175
2004 79.3 0.176
2005 76.2 0.177
2006 73.2 0.178
2007 70.2 0.178
2008 67.2 0.179
2009 64.3 0.180
2010 61.4 0.180
2011 58.5 0.181
2012 55.6 0.181
2013 52.7 0.181
2014 49.8 0.181
2015 46.9 0.181
2016 44.0 0.180
2017 41.0 0.179
2018 38.0 0.178
2019 35.0 0.176
2020 31.9 0.173
2021 28.7 0.170
2022 25.3 0.167
2023 21.8 0.162
2024 18.1 0.157
2025 14.0 0.150
2026 9.6 0.142
2027 4.5 0.132
2028 358.5 0.120
2029 351.0 0.105
2030 340.9 0.088


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



 
 


wds20537%2B5918a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic