20001+0338 A 2393 (HD 189496)

 
 
20h 00m 06.51s +03° 38' 12.9" P.A. 2.00 sep 0.1 mag 9.50,10.20 Sp A2
 
 
Coord 2000 20001+0338 Discov num A  2393 Comp Coord arcsec 2000 20 00 06.51 +03 38 12.9
Date first 1910 Date last 2022 Obs 8
Pa first 257 Pa last 1.7 P.A. Now (θ) 5.5°
Sep first 0.3 Sep last 0.071 Sep. Now (ρ) 0.069"
Mag pri 9.50 Mag sec 10.20 delta mag (ΔM) 0.7 Spectral class A2 (white)
Pri motion ra +009 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189496 Constellation Aquila SAO 125327 Tycho2 0498-00135-1
Gaia DR2 4247262823672797440 HD 189496 ADS 13220
 
 
ORBITAL ELEMENTS
 
 
Period (P)500y Periastron (T)2000.41y Semi-major axis (a)0.265a
Eccentricity (e)0.859 Inclination (i)117° Longitude of periastron (ω)130.4°
Node (Ω)245.3° Notes ReferenceTok2022g
Equinox2000 Last observation2022 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 100.4 0.025
2001 85.3 0.031
2002 75.3 0.037
2003 68.0 0.043
2004 62.1 0.047
2005 57.1 0.050
2006 52.7 0.053
2007 48.6 0.055
2008 44.9 0.056
2009 41.3 0.058
2010 37.8 0.059
2011 34.5 0.060
2012 31.3 0.061
2013 28.1 0.062
2014 25.1 0.063
2015 22.2 0.063
2016 19.3 0.064
2017 16.5 0.065
2018 13.7 0.066
2019 11.1 0.067
2020 8.5 0.068
2021 6.0 0.069
2022 3.6 0.070
2023 1.2 0.071
2024 358.9 0.072
2025 356.7 0.074
2026 354.6 0.075
2027 352.5 0.076
2028 350.5 0.077
2029 348.6 0.079
2030 346.7 0.080
2031 344.9 0.082
2032 343.2 0.083
2033 341.5 0.085
2034 339.9 0.086
2035 338.4 0.088
2036 336.9 0.089
2037 335.4 0.091
2038 334.0 0.093
2039 332.7 0.094
2040 331.4 0.096
2041 330.1 0.098
2042 328.9 0.099
2043 327.8 0.101
2044 326.6 0.103
2045 325.6 0.105
2046 324.5 0.107
2047 323.5 0.108
2048 322.5 0.110
2049 321.5 0.112
2050 320.6 0.114


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds20001%2B0338a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic