19350+2328 A 162 (HD 184739)

 
 
19h 35m 01.71s +23° 28' 27.3" P.A. 306.00 sep 0.1 mag 8.73,8.77 Sp A0 dist. 155.76 pc (508.09 l.y.)
 
 
Coord 2000 19350+2328 Discov num A   162 Comp Coord arcsec 2000 19 35 01.71 +23 28 27.3
Date first 1900 Date last 2019 Obs 74
Pa first 145 Pa last 305.7 P.A. Now (θ) 305.7°
Sep first 0.2 Sep last 0.125 Sep. Now (ρ) 0.125"
Mag pri 8.73 Mag sec 8.77 delta mag (ΔM) 0.04 Spectral class A0 (white)
Pri motion ra +009 Sec motion ra
Pri motion dec +006 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 184739 Constellation Vulpecula SAO 87387 HIP 96317
Tycho2 2138-01993-1 Gaia DR2 2020996109575128704 HD 184739 ADS 12631
BD BD+23 3699 Distance 155.76 Distance ly 508.09
 
 
ORBITAL ELEMENTS
 
 
Period (P)279y± 91 Periastron (T)2015y± 14 Semi-major axis (a)0.294a± 0.067
Eccentricity (e)0.33± 0.11 Inclination (i)62.8°± 3.2 Longitude of periastron (ω)234°± 31
Node (Ω)77.9°± 4.5 Notesn ReferenceMdz2017
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 264.8 0.203
2001 266.0 0.200
2002 267.2 0.196
2003 268.5 0.193
2004 269.8 0.189
2005 271.2 0.185
2006 272.6 0.180
2007 274.2 0.176
2008 275.8 0.171
2009 277.4 0.167
2010 279.2 0.162
2011 281.1 0.157
2012 283.1 0.152
2013 285.3 0.147
2014 287.6 0.142
2015 290.1 0.137
2016 292.7 0.132
2017 295.6 0.127
2018 298.7 0.122
2019 302.1 0.117
2020 305.7 0.113
2021 309.6 0.109
2022 313.8 0.105
2023 318.3 0.102
2024 323.1 0.099
2025 328.1 0.097
2026 333.3 0.095
2027 338.6 0.094
2028 344.1 0.094
2029 349.5 0.095
2030 354.8 0.096


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



 
 


wds19350%2B2328e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic