10269+1713 STT 217 (HD 90444)

 
 
10h 26m 53.01s +17° 13' 09.9" P.A. 150.00 sep 0.8 mag 7.85,8.58 Sp F6V dist. 84.75 pc (276.45 l.y.)
 
 
Coord 2000 10269+1713 Discov num STT 217 Comp Coord arcsec 2000 10 26 53.01 +17 13 09.9
Date first 1843 Date last 2019 Obs 174
Pa first 147 Pa last 149.9 P.A. Now (θ) 149.3°
Sep first 0.4 Sep last 0.788 Sep. Now (ρ) 0.81"
Mag pri 7.85 Mag sec 8.58 delta mag (ΔM) 0.73 Spectral class F6V (yellow-white)
Pri motion ra -042 Sec motion ra -042
Pri motion dec -067 Sec motion dec -067
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 90444 Constellation Leo SAO 99127 HIP 51145
Tycho2 1420-00152-1 HD 90444 ADS 7775 BD BD+17 2224
Distance 84.75 Distance ly 276.45
 
 
ORBITAL ELEMENTS
 
 
Period (P)139.789y Periastron (T)1966.983y Semi-major axis (a)0.47a
Eccentricity (e)0.984 Inclination (i)47.3° Longitude of periastron (ω)219.9°
Node (Ω)121.2° Notesn ReferenceSca2015b
Equinox2000 Last observation2012 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 146.6 0.690
2001 146.7 0.698
2002 146.9 0.706
2003 147.0 0.713
2004 147.1 0.721
2005 147.3 0.728
2006 147.4 0.735
2007 147.5 0.741
2008 147.7 0.747
2009 147.8 0.753
2010 147.9 0.759
2011 148.0 0.764
2012 148.1 0.769
2013 148.2 0.774
2014 148.4 0.779
2015 148.5 0.783
2016 148.6 0.787
2017 148.7 0.791
2018 148.8 0.795
2019 148.9 0.798
2020 149.0 0.802
2021 149.1 0.805
2022 149.2 0.807
2023 149.3 0.810
2024 149.4 0.812
2025 149.5 0.814
2026 149.6 0.816
2027 149.7 0.818
2028 149.9 0.819
2029 150.0 0.820
2030 150.1 0.821


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



 
 


wds10269%2B1713b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic