13513-2423 WSI  77

 
 
13H 51M 20.32S -24 23' 25.3" P.A. 166.1 SEP 0.2 MAG 6.45,9.90 SP G5V DIST. 19.47 PC (63.51 L.Y.)
 
 
Coord 2000
13513-2423
Discov num
WSI  77
Comp
Coord arcsec 2000
13 51 20.32 -24 23 25.3
Date first
2006
Date last
2015
Obs
12
Pa first
171
Pa last
175
P.A. Now (θ)
166.1°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.2"
Mag pri
6.45
Mag sec
9.90
delta mag (ΔM)
3.45
Spectral class
G5V (yellow)
Pri motion ra
-581
Sec motion ra
Pri motion dec
-245
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydra
SAO
182026
HIP
67620
Tycho2
6720-01406-1
HD
120690
HR
5209
GL
Gl 530
DM
CD-2311329
CD
CD-2311328
CP
CP-23 5802
Distance
19.47
Distance ly
63.51
last precise pa
174.7
last precise sep
0.337
 
 
ORBITAL ELEMENTS
 
 
Period (P)10.485y± 0.06 Periastron (T)2009.218y± 0.028 Semi-major axis (a)0.2827a± 0.0014
Eccentricity (e)0.3462± 0.008 Inclination (i)96.4°± 0.2 Longitude of periastron (ω)137.5°± 1.4
Node (Ω)171.3°± 0.3 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.187 346.4
2001 0.084 329.2
2002 0.070 204.1
2003 0.188 182.3
2004 0.284 177.0
2005 0.339 174.1
2006 0.340 171.7
2007 0.272 168.7
2008 0.119 160.5
2009 0.098 1.7
2010 0.203 349.9
2011 0.140 340.9
2012 0.037 274.2
2013 0.132 187.9
2014 0.242 179.1
2015 0.318 175.4
2016 0.347 172.9
2017 0.315 170.4
2018 0.204 166.1
2019 0.024 99.7
2020 0.177 353.7
2021 0.185 346.1
2022 0.081 328.0
2023 0.073 202.4
2024 0.192 182.0
2025 0.286 176.9
2026 0.340 174.1
2027 0.339 171.6
2028 0.269 168.6
2029 0.114 159.9
2030 0.104 0.9

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