10093+2020 A 2145 (HD 88021)

 
 
10h 09m 19.63s +20° 19' 56.6" P.A. 225.00 sep 0.2 mag 7.30,7.50 Sp F5+A2 dist. 290.7 pc (948.26 l.y.)
 
 
Coord 2000 10093+2020 Discov num A  2145 Comp Coord arcsec 2000 10 09 19.63 +20 19 56.6
Date first 1910 Date last 2019 Obs 91
Pa first 195 Pa last 224.6 P.A. Now (θ) 228°
Sep first 0.2 Sep last 0.231 Sep. Now (ρ) 0.223"
Mag pri 7.30 Mag sec 7.50 delta mag (ΔM) 0.2 Spectral class F5+A2 (yellow-white/white)
Pri motion ra -027 Sec motion ra
Pri motion dec -019 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 88021 Constellation Leo SAO 81208 HIP 49747
Tycho2 1425-01393-1 Gaia DR2 628411856378018560 HD 88021 GC 13941
ADS 7662 BD BD+21 2156 Distance 290.7 Distance ly 948.26
 
 
ORBITAL ELEMENTS
 
 
Period (P)83.5y± 0.12 Periastron (T)1992.11y± 0.04 Semi-major axis (a)0.158a± 0.001
Eccentricity (e)0.827± 0.002 Inclination (i)139°± 0.4 Longitude of periastron (ω)125.1°± 0.3
Node (Ω)172°± 0.4 Notesn ReferenceGur2021
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 268.2 0.104
2001 264.2 0.112
2002 260.8 0.119
2003 257.8 0.127
2004 255.1 0.134
2005 252.7 0.140
2006 250.4 0.147
2007 248.4 0.153
2008 246.5 0.159
2009 244.8 0.165
2010 243.2 0.170
2011 241.6 0.176
2012 240.2 0.181
2013 238.9 0.186
2014 237.6 0.190
2015 236.3 0.195
2016 235.2 0.199
2017 234.0 0.203
2018 232.9 0.207
2019 231.9 0.211
2020 230.9 0.214
2021 229.9 0.217
2022 228.9 0.220
2023 228.0 0.223
2024 227.1 0.226
2025 226.2 0.229
2026 225.4 0.231
2027 224.5 0.233
2028 223.7 0.235
2029 222.9 0.237
2030 222.1 0.239


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


 
  


wds10093%2B2020d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic