19420+4015 KUI 94 (HD 186307)

 
 
19h 41m 57.63s +40° 15' 14.6" P.A. 154.00 sep 0.5 mag 6.50,7.80 Sp A6V dist. 81.57 pc (266.08 l.y.)
 
 
Coord 2000 19420+4015 Discov num KUI  94 Comp Coord arcsec 2000 19 41 57.63 +40 15 14.6
Date first 1937 Date last 2021 Obs 76
Pa first 160 Pa last 153.5 P.A. Now (θ) 151.6°
Sep first 0.5 Sep last 0.475 Sep. Now (ρ) 0.434"
Mag pri 6.50 Mag sec 7.80 delta mag (ΔM) 1.3 Spectral class A6V (white)
Pri motion ra -010 Sec motion ra
Pri motion dec +030 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 186307 Constellation Cygnus SAO 48737 HIP 96907
Tycho2 3140-02348-1 Gaia DR2 2076394762376371200 HD 186307 HR 7499
GC 27275 BD BD+39 3878 Distance 81.57 Distance ly 266.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)80.82y± 1.26 Periastron (T)1980.97y± 0.15 Semi-major axis (a)0.339a± 0.021
Eccentricity (e)0.4087± 0.009 Inclination (i)107°± 0.4 Longitude of periastron (ω)192.3°± 0.8
Node (Ω)158.4°± 0.3 Notesn ReferenceDoc2025a
Equinox Last observation2024 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 171.6 0.304
2001 170.2 0.323
2002 169.0 0.340
2003 167.9 0.357
2004 166.9 0.372
2005 165.9 0.387
2006 165.0 0.400
2007 164.2 0.412
2008 163.4 0.423
2009 162.7 0.432
2010 161.9 0.441
2011 161.3 0.449
2012 160.6 0.455
2013 159.9 0.461
2014 159.3 0.465
2015 158.7 0.469
2016 158.1 0.471
2017 157.4 0.473
2018 156.8 0.473
2019 156.2 0.473
2020 155.6 0.471
2021 155.0 0.469
2022 154.4 0.465
2023 153.7 0.461
2024 153.1 0.456
2025 152.4 0.449
2026 151.7 0.442
2027 151.0 0.434
2028 150.3 0.425
2029 149.5 0.415
2030 148.7 0.404
2031 147.8 0.393
2032 146.9 0.380
2033 145.9 0.367
2034 144.9 0.352
2035 143.7 0.337
2036 142.5 0.321
2037 141.1 0.305
2038 139.5 0.287
2039 137.7 0.269
2040 135.7 0.251
2041 133.4 0.232
2042 130.6 0.212
2043 127.2 0.192
2044 123.1 0.172
2045 117.9 0.153
2046 111.2 0.134
2047 102.5 0.117
2048 91.0 0.103
2049 76.5 0.093
2050 59.9 0.090


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds19420%2B4015b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic