15492-3539 NHR 8 Aa,Ab

 
 
15h 49m 12.14s -35° 39' 03.9" P.A. 278.00 sep 0.7 mag 11.40, Sp K7V
 
 
Coord 2000 15492-3539 Discov num NHR   8 Comp Aa,Ab Coord arcsec 2000 15 49 12.14 -35 39 03.9
Date first 1994 Date last 2012 Obs 18
Pa first 276 Pa last 277.6 P.A. Now (θ) 277.6°
Sep first 0.7 Sep last 0.713 Sep. Now (ρ) 0.713"
Mag pri 11.40 Mag sec delta mag (ΔM) Spectral class K7V (yellow-orange)
Pri motion ra -014 Sec motion ra
Pri motion dec -024 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
15492-3539 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 15 49 12 -35 39 04 NHR 8 Aa,Ab 2012 18 278 0.7 11.40 Y <===
Show 15 49 12 -35 39 04 NHR 8 Aa,B 2006 5 42 6.4 11.40 18.50 7.10
Show 15 49 12 -35 39 04 FMR 248 Aa,C 2016 3 115 16.1 11.40 18.40 7.00
Quadruple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lupus Gaia DR2 6011522757643074304
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)1138.3y Periastron (T)2433.3y Semi-major axis (a)0.69a
Eccentricity (e)0.21 Inclination (i)53.7° Longitude of periastron (ω)360°
Node (Ω)76.5° Notesn ReferenceGns2014b
Equinox Last observation2012 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 274.9 0.742
2001 275.1 0.740
2002 275.2 0.739
2003 275.4 0.738
2004 275.5 0.736
2005 275.7 0.735
2006 275.9 0.734
2007 276.0 0.732
2008 276.2 0.731
2009 276.4 0.729
2010 276.5 0.728
2011 276.7 0.727
2012 276.9 0.725
2013 277.0 0.724
2014 277.2 0.722
2015 277.4 0.721
2016 277.5 0.719
2017 277.7 0.718
2018 277.9 0.716
2019 278.0 0.715
2020 278.2 0.714
2021 278.4 0.712
2022 278.5 0.711
2023 278.7 0.709
2024 278.9 0.707
2025 279.1 0.706
2026 279.2 0.704
2027 279.4 0.703
2028 279.6 0.701
2029 279.8 0.700
2030 279.9 0.698


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



 
 


wds15492-3539a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)1734.1y Periastron (T)2214.4y Semi-major axis (a)0.92a
Eccentricity (e)0.69 Inclination (i)46.4° Longitude of periastron (ω)266.7°
Node (Ω)126.6° Notesn ReferenceGns2014b
Equinox Last observation2012 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 274.5 0.744
2001 274.7 0.742
2002 274.8 0.741
2003 275.0 0.740
2004 275.2 0.738
2005 275.3 0.737
2006 275.5 0.735
2007 275.6 0.734
2008 275.8 0.732
2009 276.0 0.731
2010 276.1 0.730
2011 276.3 0.728
2012 276.5 0.727
2013 276.6 0.725
2014 276.8 0.724
2015 277.0 0.722
2016 277.1 0.721
2017 277.3 0.719
2018 277.5 0.718
2019 277.6 0.716
2020 277.8 0.715
2021 278.0 0.713
2022 278.2 0.712
2023 278.3 0.710
2024 278.5 0.709
2025 278.7 0.707
2026 278.9 0.705
2027 279.0 0.704
2028 279.2 0.702
2029 279.4 0.701
2030 279.6 0.699


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



 
 


wds15492-3539b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #3
 
 
Period (P)786.1y Periastron (T)2269.8y Semi-major axis (a)0.54a
Eccentricity (e)0.52 Inclination (i)39.6° Longitude of periastron (ω)360°
Node (Ω)77.9° Notesn ReferenceGns2014b
Equinox Last observation2012 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 275.1 0.739
2001 275.3 0.738
2002 275.5 0.736
2003 275.6 0.735
2004 275.8 0.734
2005 276.0 0.732
2006 276.1 0.731
2007 276.3 0.730
2008 276.5 0.728
2009 276.6 0.727
2010 276.8 0.725
2011 277.0 0.724
2012 277.1 0.722
2013 277.3 0.721
2014 277.5 0.719
2015 277.6 0.718
2016 277.8 0.716
2017 278.0 0.715
2018 278.1 0.713
2019 278.3 0.712
2020 278.5 0.710
2021 278.7 0.709
2022 278.8 0.707
2023 279.0 0.706
2024 279.2 0.704
2025 279.4 0.702
2026 279.6 0.701
2027 279.7 0.699
2028 279.9 0.697
2029 280.1 0.696
2030 280.3 0.694


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



 
 


wds15492-3539c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic