15246+5413 HU 149 (HD 137588)

 
 
15h 24m 35.30s +54° 12' 46.1" P.A. 271.00 sep 0.7 mag 7.48,7.62 Sp K0 dist. 234.74 pc (765.72 l.y.)
 
 
Coord 2000 15246+5413 Discov num HU  149 Comp Coord arcsec 2000 15 24 35.30 +54 12 46.1
Date first 1900 Date last 2017 Obs 81
Pa first 296 Pa last 271 P.A. Now (θ) 271°
Sep first 0.2 Sep last 0.665 Sep. Now (ρ) 0.665"
Mag pri 7.48 Mag sec 7.62 delta mag (ΔM) 0.14 Spectral class K0 (yellow-orange)
Pri motion ra +039 Sec motion ra +039
Pri motion dec -055 Sec motion dec -055
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 137588 Constellation Draco SAO 29514 HIP 75425
Tycho2 3869-00222-1 Gaia DR2 1599559109384447104 HD 137588 GC 20735
ADS 9628 BD BD+54 1745 Distance 234.74 Distance ly 765.72
 
 
ORBITAL ELEMENTS
 
 
Period (P)770y Periastron (T)1979.4y Semi-major axis (a)0.776a
Eccentricity (e)0.17 Inclination (i)96.8° Longitude of periastron (ω)156°
Node (Ω)90.7° Notes ReferenceZir2015a
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 271.9 0.637
2001 271.8 0.638
2002 271.8 0.640
2003 271.7 0.641
2004 271.6 0.642
2005 271.5 0.644
2006 271.4 0.645
2007 271.4 0.646
2008 271.3 0.647
2009 271.2 0.648
2010 271.1 0.649
2011 271.1 0.649
2012 271.0 0.650
2013 270.9 0.651
2014 270.8 0.651
2015 270.7 0.652
2016 270.7 0.652
2017 270.6 0.653
2018 270.5 0.653
2019 270.4 0.653
2020 270.4 0.654
2021 270.3 0.654
2022 270.2 0.654
2023 270.1 0.654
2024 270.1 0.653
2025 270.0 0.653
2026 269.9 0.653
2027 269.8 0.653
2028 269.7 0.652
2029 269.7 0.652
2030 269.6 0.651


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



 
 


wds15246%2B5413a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic