15226-4755 SLR  20

 
 
15h 22m 36.49s -47 55' 15.5" P.A. 8.8 sep 0.64 mag 8.33,8.67 Sp G6V dist. 35.46 pc (115.67 l.y.)
 
 
Coord 2000
15226-4755
Discov num
SLR  20
Comp
Coord arcsec 2000
15 22 36.49 -47 55 15.5
Date first
1895
Date last
2014
Obs
53
Pa first
225
Pa last
14
P.A. Now (θ)
8.8°
Sep first
2.0
Sep last
0.7
Sep. Now (ρ)
0.64"
Mag pri
8.33
Mag sec
8.67
delta mag (ΔM)
0.34
Spectral class
G6V (yellow)
Pri motion ra
-369
Sec motion ra
-369
Pri motion dec
-255
Sec motion dec
-255
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
14.1
Precise sep
0.684
Constellation
Lupus
SAO
225709
HIP
75255
Tycho2
8299-01239-1
HD
136466
GL
Gl 582.1A
CD
CD-47 9926
CP
CP-47 7081
Distance
35.46
Distance ly
115.67
last precise pa
14.1
last precise sep
0.684
 
 
ORBITAL ELEMENTS
 
 
Period (P)429.6y± 4.57 Periastron (T)1972.88y± 1.56 Semi-major axis (a)1.899a± 0.019
Eccentricity (e)0.469± 0.004 Inclination (i)109.7°± 0.5 Longitude of periastron (ω)344.6°± 2
Node (Ω)56°± 0.9 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.883 36.1
2001 0.869 35.0
2002 0.854 33.8
2003 0.840 32.5
2004 0.825 31.2
2005 0.810 29.9
2006 0.795 28.5
2007 0.780 27.0
2008 0.765 25.5
2009 0.750 23.9
2010 0.735 22.3
2011 0.720 20.6
2012 0.706 18.8
2013 0.692 17.0
2014 0.678 15.1
2015 0.665 13.1
2016 0.652 11.0
2017 0.640 8.8
2018 0.628 6.6
2019 0.617 4.3
2020 0.607 1.9
2021 0.598 359.4
2022 0.590 356.8
2023 0.582 354.2
2024 0.576 351.5
2025 0.570 348.8
2026 0.566 346.0
2027 0.563 343.2
2028 0.561 340.3
2029 0.561 337.5
2030 0.561 334.6

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

grafico orbita





wds15226-4755b.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
15226-4755 SLR 20 1991 50 46 1.0 8.33 8.67 G6V NOD 152236.49-475515.5
15226-4755 SLR 20 2009 51 23 0.8 8.33 8.67 G6V NOD 152236.49-475515.5
15226-4755 SLR 20 2014 53 14 0.7 8.33 8.67 G6V NO 152236.49-475515.5

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