11544-3745 HWE  71

 
 
11h 54m 25.81s -37 44' 56.1" P.A. 74.8 sep 0.19 mag 6.75,8.60 Sp F7V dist. 50.61 pc (165.09 l.y.)
 
 
Coord 2000
11544-3745
Discov num
HWE  71
Comp
Coord arcsec 2000
11 54 25.81 -37 44 56.1
Date first
1876
Date last
2015
Obs
27
Pa first
270
Pa last
84
P.A. Now (θ)
74.8°
Sep first
1.2
Sep last
0.2
Sep. Now (ρ)
0.19"
Mag pri
6.75
Mag sec
8.60
delta mag (ΔM)
1.85
Spectral class
F7V (yellow-white)
Pri motion ra
-315
Sec motion ra
Pri motion dec
+061
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
84.2
Precise sep
0.244
Constellation
Centaurus
SAO
202926
HIP
58057
Tycho2
7742-01391-1
HD
103437
HR
4557
GL
Gl 452.2A
CD
CD-37 7536
CP
CP-37 4950
Distance
50.61
Distance ly
165.09
last precise pa
84.2
last precise sep
0.244
 
 
ORBITAL ELEMENTS
 
 
Period (P)248.8y Periastron (T)2008.48y Semi-major axis (a)1.004a
Eccentricity (e)0.72 Inclination (i)99.6° Longitude of periastron (ω)162°
Node (Ω)276.3° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.091 225.4
2001 0.068 197.2
2002 0.070 159.5
2003 0.095 133.6
2004 0.130 119.8
2005 0.166 112.0
2006 0.201 107.0
2007 0.232 103.4
2008 0.258 100.6
2009 0.277 98.2
2010 0.288 96.1
2011 0.292 94.1
2012 0.289 92.1
2013 0.280 90.0
2014 0.267 87.8
2015 0.251 85.3
2016 0.232 82.4
2017 0.212 78.9
2018 0.191 74.8
2019 0.169 69.5
2020 0.149 62.8
2021 0.130 54.1
2022 0.115 42.8
2023 0.106 28.8
2024 0.103 13.0
2025 0.107 357.5
2026 0.119 344.2
2027 0.135 333.6
2028 0.155 325.5
2029 0.176 319.3
2030 0.199 314.5

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

grafico orbita





wds11544-3745a.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
11544-3745 HWE 71 1991 21 264 0.4 6.75 8.60 F7V D 115426.06-374456.7
11544-3745 HWE 71 2009 22 98 0.3 6.75 8.60 F7V D 115426.06-374456.7
11544-3745 HWE 71 2013 24 90 0.3 6.75 8.60 F7V D 115426.06-374456.7
11544-3745 HWE 71 2014 26 88 0.3 6.75 8.60 F7V OD 115426.06-374456.7
11544-3745 HWE 71 2015 27 84 0.2 6.75 8.60 F7V OD 115426.06-374456.7

If you need more information about this double, apply for a data request form to the WDS.