09245+0621 STF 1348 AB (HD 81212)

 
 
09h 24m 28.48s +06° 21' 01.8" P.A. 314.00 sep 2.0 mag 7.45,7.57 Sp F7V dist. 71.17 pc (232.16 l.y.)
 
 
Coord 2000 09245+0621 Discov num STF1348 Comp AB Coord arcsec 2000 09 24 28.48 +06 21 01.8
Date first 1831 Date last 2018 Obs 240
Pa first 334 Pa last 314 P.A. Now (θ) 314°
Sep first 1.1 Sep last 1.956 Sep. Now (ρ) 1.956"
Mag pri 7.45 Mag sec 7.57 delta mag (ΔM) 0.12 Spectral class F7V (yellow-white)
Pri motion ra -173 Sec motion ra -172
Pri motion dec -033 Sec motion dec -034
Notes O (Orbital solution)
rPM=0.008 (< 0.3, Physical double)
This double is physical.
 
 
09245+0621 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 81212 117661 09 24 28 +06 21 02 STF 1348 AB 2018 240 314 2.0 7.45 7.57 0.12 Y <===
Show 117661 09 24 28 +06 21 02 LDS 3888 AC 2015 5 325 123.1 7.45 14.41 6.96
Show 09 24 24 +06 22 42 NSN 594 CD 2016 3 22 1.8 14.64 15.63 0.99
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 81212 Constellation Hydra SAO 117661 HIP 46134
Tycho2 0234-01664-1 Gaia DR2 585739741384499072 HD 81212 GC 12975
BD BD+06 2169 Distance 71.17 Distance ly 232.16
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)4734.231y Periastron (T)1800.232y Semi-major axis (a)6.261a
Eccentricity (e)0.82 Inclination (i)100.01° Longitude of periastron (ω)117.49°
Node (Ω)148.32° Notes ReferenceGrv2021c
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 315.6 1.960
2001 315.5 1.960
2002 315.5 1.959
2003 315.4 1.959
2004 315.3 1.958
2005 315.2 1.958
2006 315.2 1.957
2007 315.1 1.957
2008 315.0 1.956
2009 314.9 1.956
2010 314.8 1.955
2011 314.8 1.955
2012 314.7 1.954
2013 314.6 1.953
2014 314.5 1.953
2015 314.5 1.952
2016 314.4 1.951
2017 314.3 1.951
2018 314.2 1.950
2019 314.1 1.949
2020 314.1 1.948
2021 314.0 1.947
2022 313.9 1.947
2023 313.8 1.946
2024 313.8 1.945
2025 313.7 1.944
2026 313.6 1.943
2027 313.5 1.942
2028 313.4 1.941
2029 313.4 1.940
2030 313.3 1.939


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



 
 


wds09245%2B0621a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)8612.811y Periastron (T)1839.796y Semi-major axis (a)9.331a
Eccentricity (e)0.834 Inclination (i)98.61° Longitude of periastron (ω)317.36°
Node (Ω)35.97° Notes ReferenceGrv2021c
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 27.5 1.965
2001 27.5 1.964
2002 27.4 1.962
2003 27.3 1.961
2004 27.2 1.959
2005 27.1 1.958
2006 27.1 1.956
2007 27.0 1.955
2008 26.9 1.953
2009 26.8 1.952
2010 26.8 1.950
2011 26.7 1.948
2012 26.6 1.946
2013 26.5 1.945
2014 26.4 1.943
2015 26.4 1.941
2016 26.3 1.939
2017 26.2 1.937
2018 26.1 1.935
2019 26.0 1.933
2020 26.0 1.931
2021 25.9 1.929
2022 25.8 1.927
2023 25.7 1.925
2024 25.6 1.923
2025 25.5 1.921
2026 25.5 1.919
2027 25.4 1.917
2028 25.3 1.915
2029 25.2 1.912
2030 25.1 1.910


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



 
 


wds09245%2B0621b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #3
 
 
Period (P)568.4y Periastron (T)1800y Semi-major axis (a)1.836a
Eccentricity (e)0.888 Inclination (i)106.86° Longitude of periastron (ω)63.73°
Node (Ω)159.21° Notes ReferenceGrv2021c
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 315.5 1.964
2001 315.4 1.964
2002 315.3 1.963
2003 315.3 1.962
2004 315.2 1.961
2005 315.1 1.960
2006 315.0 1.959
2007 315.0 1.958
2008 314.9 1.957
2009 314.8 1.956
2010 314.7 1.955
2011 314.7 1.954
2012 314.6 1.953
2013 314.5 1.952
2014 314.5 1.950
2015 314.4 1.949
2016 314.3 1.948
2017 314.2 1.946
2018 314.2 1.945
2019 314.1 1.944
2020 314.0 1.942
2021 313.9 1.941
2022 313.8 1.939
2023 313.8 1.938
2024 313.7 1.936
2025 313.6 1.934
2026 313.5 1.933
2027 313.5 1.931
2028 313.4 1.929
2029 313.3 1.927
2030 313.2 1.926


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



 
 


wds09245%2B0621c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic