10000+2433 CHR 145 (DH Leo)

 
 
10h 00m 01.70s +24 33' 09.9" P.A. 158.00 sep 0.1 mag 8.12,10.43 Sp K0V dist. 31.69 pc (103.37 l.y.)
 
 
Coord 2000 10000+2433 Discov num CHR 145 Comp Coord arcsec 2000 10 00 01.70 +24 33 09.9
Date first 1989 Date last 2021 Obs 25
Pa first 38 Pa last 157.6 P.A. Now (θ) 157.6°
Sep first 0.2 Sep last 0.121 Sep. Now (ρ) 0.121"
Mag pri 8.12 Mag sec 10.43 delta mag (ΔM) 2.31 Spectral class K0V (yellow-orange)
Pri motion ra -236 Sec motion ra
Pri motion dec -032 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DH Leo Constellation Leo SAO 81134 HIP 49018
Tycho2 1961-01385-1 Gaia DR2 642660938662899456 HD 86590 GC 13748
GL NN 3580 BD BD+25 2191 Distance 31.69 Distance ly 103.37
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.13y Periastron (T)2003.21y Semi-major axis (a)0.437a
Eccentricity (e)0.748 Inclination (i)96.3° Longitude of periastron (ω)271.6°
Node (Ω)197.5° Notesn ReferenceHrt2012a
Equinox2000 Last observation2011 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 20.7 0.267
2001 18.9 0.229
2002 15.9 0.159
2003 356.6 0.033
2004 201.2 0.118
2005 196.8 0.204
2006 194.6 0.248
2007 192.9 0.271
2008 191.4 0.281
2009 190.0 0.283
2010 188.6 0.280
2011 187.1 0.272
2012 185.5 0.262
2013 183.8 0.249
2014 181.8 0.234
2015 179.6 0.218
2016 177.0 0.201
2017 173.9 0.183
2018 170.2 0.165
2019 165.5 0.147
2020 159.5 0.130
2021 151.8 0.113
2022 141.7 0.100
2023 128.8 0.089
2024 113.5 0.084
2025 97.5 0.085
2026 82.8 0.092
2027 70.9 0.104
2028 61.6 0.118
2029 54.5 0.135
2030 49.0 0.153


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



 
 


wds10000%2B2433a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic