15492-3539 NHR   8Aa,Ab

 
 
15h 49m 12.14s -35 39' 03.9" P.A. 278 sep 0.72 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
278
P.A. Now (θ)
278°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.72"
Mag pri
11.40
Mag sec
delta mag (ΔM)
Spectral class
K7V (yellow-orange)
Pri motion ra
-027
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
15492-3539 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 15492-3539 NHR 8 Aa,Ab 1994 2012 18 278 0.7 11.40 Y <===
Show 15492-3539 NHR 8 Aa,B 2004 2006 5 42 6.4 11.40 18.50 7.10
Triple system
1 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
277.6
Precise sep
0.713
Constellation
Lupus
last precise pa
277.6
last precise sep
0.713
 
 
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° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2012
label rho theta
2000 0.742 274.9
2001 0.740 275.1
2002 0.739 275.2
2003 0.738 275.4
2004 0.736 275.5
2005 0.735 275.7
2006 0.734 275.9
2007 0.732 276.0
2008 0.731 276.2
2009 0.729 276.4
2010 0.728 276.5
2011 0.727 276.7
2012 0.725 276.9
2013 0.724 277.0
2014 0.722 277.2
2015 0.721 277.4
2016 0.719 277.5
2017 0.718 277.7
2018 0.716 277.9
2019 0.715 278.0
2020 0.714 278.2
2021 0.712 278.4
2022 0.711 278.5
2023 0.709 278.7
2024 0.707 278.9
2025 0.706 279.1
2026 0.704 279.2
2027 0.703 279.4
2028 0.701 279.6
2029 0.700 279.8
2030 0.698 279.9

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

grafico orbita





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° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2012
label rho theta
2000 0.744 274.5
2001 0.742 274.7
2002 0.741 274.8
2003 0.740 275.0
2004 0.738 275.2
2005 0.737 275.3
2006 0.735 275.5
2007 0.734 275.6
2008 0.732 275.8
2009 0.731 276.0
2010 0.730 276.1
2011 0.728 276.3
2012 0.727 276.5
2013 0.725 276.6
2014 0.724 276.8
2015 0.722 277.0
2016 0.721 277.1
2017 0.719 277.3
2018 0.718 277.5
2019 0.716 277.6
2020 0.715 277.8
2021 0.713 278.0
2022 0.712 278.2
2023 0.710 278.3
2024 0.709 278.5
2025 0.707 278.7
2026 0.705 278.9
2027 0.704 279.0
2028 0.702 279.2
2029 0.701 279.4
2030 0.699 279.6

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

grafico orbita





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° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2012
label rho theta
2000 0.739 275.1
2001 0.738 275.3
2002 0.736 275.5
2003 0.735 275.6
2004 0.734 275.8
2005 0.732 276.0
2006 0.731 276.1
2007 0.730 276.3
2008 0.728 276.5
2009 0.727 276.6
2010 0.725 276.8
2011 0.724 277.0
2012 0.722 277.1
2013 0.721 277.3
2014 0.719 277.5
2015 0.718 277.6
2016 0.716 277.8
2017 0.715 278.0
2018 0.713 278.1
2019 0.712 278.3
2020 0.710 278.5
2021 0.709 278.7
2022 0.707 278.8
2023 0.706 279.0
2024 0.704 279.2
2025 0.702 279.4
2026 0.701 279.6
2027 0.699 279.7
2028 0.697 279.9
2029 0.696 280.1
2030 0.694 280.3

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

grafico orbita





wds15492-3539c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15492-3539 NHR 8 Aa,Ab 2007 9 276 0.7 11.40   K7V N D 154912.14-353903.9
15492-3539 NHR 8 Aa,Ab 2012 12 278 0.7 11.40   K7V N 154912.14-353903.9

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