10017+1725 RUC 7 (XY Leo)

 
 
10h 01m 40.39s +17° 24' 33.2" P.A. 223.00 sep 0.1 mag 9.45, Sp K0V+K6V dist. 72.31 pc (235.88 l.y.)
 
 
Coord 2000 10017+1725 Discov num RUC   7 Comp Coord arcsec 2000 10 01 40.39 +17 24 33.2
Date first 1998 Date last 2021 Obs 8
Pa first 91 Pa last 222.7 P.A. Now (θ) 222.7°
Sep first 0.1 Sep last 0.14 Sep. Now (ρ) 0.14"
Mag pri 9.45 Mag sec delta mag (ΔM) Spectral class K0V+K6V (yellow-orange/yellow-orange)
Pri motion ra +063 Sec motion ra
Pri motion dec -053 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name XY Leo Constellation Leo HIP 49136 Tycho2 1412-00680-1
Gaia DR2 623076270045202048 BD BD+18 2307 Distance 72.31 Distance ly 235.88
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)19.59y± 0.06 Periastron (T)35341d (1955.636y)± 284 Semi-major axis (a)55.6m± 0.3
Eccentricity (e)0.12± 0.02 Inclination (i)94.4°± 0.2 Longitude of periastron (ω)247.3°± 0.2
Node (Ω)356°± 14 Notesn ReferenceBks2005
Equinox Last observation2002 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 356.3 0.057
2001 355.0 0.057
2002 353.6 0.053
2003 351.8 0.045
2004 348.9 0.033
2005 341.9 0.019
2006 294.5 0.005
2007 194.9 0.014
2008 184.1 0.028
2009 180.4 0.041
2010 178.3 0.049
2011 176.6 0.053
2012 175.0 0.050
2013 173.0 0.041
2014 169.1 0.026
2015 149.5 0.008
2016 12.7 0.013
2017 2.0 0.031
2018 358.9 0.045
2019 357.1 0.054
2020 355.8 0.058
2021 354.5 0.056
2022 352.9 0.050
2023 350.8 0.040
2024 346.9 0.027
2025 334.6 0.013
2026 225.8 0.006
2027 188.6 0.020
2028 182.3 0.034
2029 179.4 0.045
2030 177.6 0.051


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



 
 


wds10017%2B1725r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)19.59y± 5 Periastron (T) Semi-major axis (a)140m
Eccentricity (e)0.09± 0.03 Inclination (i)65.8° Longitude of periastron (ω)°
Node (Ω)° Notesn ReferencePbl2006
Equinox Last observation Grade7(1=Definitive, 9=Indet.)
Not enought orbital data to create a graph.