10121+2118 A 2146 (HD 88417)

 
 
10h 12m 05.05s +21° 17' 54.6" P.A. 180.00 sep 0.1 mag 9.74,9.59 Sp F8 dist. 210.97 pc (688.18 l.y.)
 
 
Coord 2000 10121+2118 Discov num A  2146 Comp Coord arcsec 2000 10 12 05.05 +21 17 54.6
Date first 1910 Date last 2013 Obs 36
Pa first 180 Pa last 179.9 P.A. Now (θ) 179.9°
Sep first 0.2 Sep last 0.113 Sep. Now (ρ) 0.113"
Mag pri 9.74 Mag sec 9.59 delta mag (ΔM) 0.15 Spectral class F8 (yellow-white)
Pri motion ra -049 Sec motion ra
Pri motion dec -057 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 88417 Constellation Leo SAO 81226 HIP 49970
Tycho2 1425-00805-1 Gaia DR2 628889834698184960 HD 88417 ADS 7677
BD BD+22 2190 Distance 210.97 Distance ly 688.18
 
 
ORBITAL ELEMENTS
 
 
Period (P)97y Periastron (T)2002y Semi-major axis (a)0.224a
Eccentricity (e)0.255 Inclination (i)33° Longitude of periastron (ω)110°
Node (Ω)33.1° Notesn ReferenceHei2001
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 131.6 0.141
2001 139.1 0.142
2002 146.6 0.143
2003 153.8 0.146
2004 160.7 0.149
2005 167.4 0.153
2006 173.6 0.157
2007 179.5 0.162
2008 185.1 0.167
2009 190.4 0.171
2010 195.4 0.176
2011 200.2 0.181
2012 204.7 0.185
2013 209.0 0.189
2014 213.2 0.193
2015 217.2 0.196
2016 221.0 0.199
2017 224.8 0.202
2018 228.4 0.205
2019 232.0 0.207
2020 235.5 0.209
2021 238.9 0.211
2022 242.3 0.212
2023 245.6 0.214
2024 248.9 0.215
2025 252.1 0.216
2026 255.3 0.217
2027 258.5 0.218
2028 261.7 0.219
2029 264.8 0.220
2030 267.9 0.221


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



 
 


wds10121%2B2118a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic