19039+2642 A 2992 (HD 337446)

 
 
19h 03m 51.17s +26° 41' 38.1" P.A. 44.00 sep 0.2 mag 10.15,9.58 Sp F8 dist. 154.8 pc (504.96 l.y.)
 
 
Coord 2000 19039+2642 Discov num A  2992 Comp Coord arcsec 2000 19 03 51.17 +26 41 38.1
Date first 1916 Date last 2016 Obs 43
Pa first 60 Pa last 44.4 P.A. Now (θ) 36.7°
Sep first 0.2 Sep last 0.167 Sep. Now (ρ) 0.167"
Mag pri 10.15 Mag sec 9.58 delta mag (ΔM) 0.57 Spectral class F8 (yellow-white)
Pri motion ra -007 Sec motion ra
Pri motion dec -084 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 337446 Constellation Lyra SAO 86758 HIP 93615
Tycho2 2130-00956-1 Gaia DR2 2036804818991564928 HD 337446 ADS 11998
BD BD+26 3437 Distance 154.8 Distance ly 504.96
 
 
ORBITAL ELEMENTS
 
 
Period (P)99y± 4 Periastron (T)1951.17y± 2 Semi-major axis (a)0.256a± 0.022
Eccentricity (e)0.835± 0.001 Inclination (i)114.5°± 4.5 Longitude of periastron (ω)255°± 1.5
Node (Ω)125.9°± 6 Notesn ReferenceDoc2009g
Equinox2000 Last observation1997 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 69.5 0.225
2001 68.4 0.223
2002 67.3 0.221
2003 66.2 0.219
2004 65.0 0.217
2005 63.9 0.214
2006 62.7 0.212
2007 61.4 0.209
2008 60.2 0.207
2009 58.9 0.204
2010 57.6 0.202
2011 56.2 0.199
2012 54.9 0.197
2013 53.4 0.194
2014 52.0 0.191
2015 50.5 0.189
2016 48.9 0.186
2017 47.3 0.183
2018 45.7 0.181
2019 44.0 0.178
2020 42.2 0.175
2021 40.4 0.173
2022 38.6 0.170
2023 36.7 0.167
2024 34.7 0.165
2025 32.7 0.162
2026 30.5 0.159
2027 28.4 0.157
2028 26.1 0.154
2029 23.8 0.152
2030 21.4 0.149


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



 
 


wds19039%2B2642b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic