16422+4112 STF 2091 (HD 150903)

 
 
16h 42m 09.74s +41° 11' 42.9" P.A. 328.00 sep 0.4 mag 8.44,9.29 Sp F0 dist. 155.04 pc (505.74 l.y.)
 
 
Coord 2000 16422+4112 Discov num STF2091 Comp Coord arcsec 2000 16 42 09.74 +41 11 42.9
Date first 1830 Date last 2012 Obs 110
Pa first 302 Pa last 328.2 P.A. Now (θ) 328.2°
Sep first 1.3 Sep last 0.379 Sep. Now (ρ) 0.379"
Mag pri 8.44 Mag sec 9.29 delta mag (ΔM) 0.85 Spectral class F0 (yellow-white)
Pri motion ra -009 Sec motion ra -009
Pri motion dec -003 Sec motion dec -003
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 150903 Constellation Hercules SAO 46234 HIP 81774
Tycho2 3074-00752-1 HD 150903 GC 22486 ADS 10169
BD BD+41 2742 Distance 155.04 Distance ly 505.74
 
 
ORBITAL ELEMENTS
 
 
Period (P)888y Periastron (T)2059y Semi-major axis (a)0.877a
Eccentricity (e)0.72 Inclination (i)64.7° Longitude of periastron (ω)321.9°
Node (Ω)126.5° Notes ReferenceZir2014a
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 321.7 0.486
2001 322.1 0.478
2002 322.5 0.470
2003 322.9 0.462
2004 323.4 0.453
2005 323.8 0.445
2006 324.3 0.436
2007 324.8 0.427
2008 325.3 0.419
2009 325.8 0.410
2010 326.4 0.401
2011 327.0 0.392
2012 327.6 0.383
2013 328.3 0.374
2014 328.9 0.365
2015 329.6 0.355
2016 330.4 0.346
2017 331.2 0.337
2018 332.0 0.327
2019 332.9 0.318
2020 333.9 0.308
2021 334.9 0.299
2022 335.9 0.289
2023 337.1 0.280
2024 338.3 0.270
2025 339.6 0.260
2026 341.0 0.251
2027 342.6 0.241
2028 344.2 0.232
2029 346.0 0.222
2030 348.0 0.213


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



 
 


wds16422%2B4112a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic