11550-5606 HLD 114

 
 
11H 55M 01.34S -56 05' 45.5" P.A. 167.4 SEP 2.96 MAG 7.36,7.81 SP G3IV/V DIST. 30.2 PC (98.51 L.Y.)
 
 
Coord 2000
11550-5606
Discov num
HLD 114
Comp
Coord arcsec 2000
11 55 01.34 -56 05 45.5
Date first
1882
Date last
2016
Obs
51
Pa first
230
Pa last
169
P.A. Now (θ)
167.4°
Sep first
2.0
Sep last
3.9
Sep. Now (ρ)
2.96"
Mag pri
7.36
Mag sec
7.81
delta mag (ΔM)
0.45
Spectral class
G3IV/V (yellow)
Pri motion ra
+209
Sec motion ra
+217
Pri motion dec
-198
Sec motion dec
-206
Notes
O (Orbital solution)
rPM=0.038 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Centaurus
SAO
239487
HIP
58106
Tycho2
8635-02005-1
HD
103493
GL
Gl 452.5A
CD
CD-55 4298
CP
CP-55 4711
Distance
30.2
Distance ly
98.51
last precise pa
169
last precise sep
3.869
 
 
ORBITAL ELEMENTS
 
 
Period (P)930y± 98 Periastron (T)2039y± 91 Semi-major axis (a)8.02a± 0.9
Eccentricity (e)0.707± 0.109 Inclination (i)97.7°± 1.5 Longitude of periastron (ω)59.7°± 7.4
Node (Ω)167.4°± 1.3 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2000
label rho theta
2000 3.437 171.2
2001 3.423 171.0
2002 3.408 170.8
2003 3.391 170.6
2004 3.372 170.4
2005 3.352 170.2
2006 3.330 170.0
2007 3.307 169.8
2008 3.281 169.6
2009 3.254 169.3
2010 3.224 169.1
2011 3.193 168.9
2012 3.159 168.7
2013 3.123 168.4
2014 3.085 168.2
2015 3.045 167.9
2016 3.002 167.7
2017 2.957 167.4
2018 2.908 167.1
2019 2.858 166.8
2020 2.804 166.5
2021 2.748 166.2
2022 2.688 165.9
2023 2.626 165.6
2024 2.560 165.2
2025 2.492 164.9
2026 2.420 164.5
2027 2.345 164.1
2028 2.267 163.6
2029 2.186 163.1
2030 2.101 162.6

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic