02390-5811 HDS 345

 
 
02h 39m 01.19s -58 11' 14.0" P.A. 143 sep 0.1 mag 10.08,10.69 Sp M0Ve dist. 16.84 pc (54.93 l.y.)
 
 
Coord 2000
02390-5811
Discov num
HDS 345
Comp
Coord arcsec 2000
02 39 01.19 -58 11 14.0
Date first
1991
Date last
2016
Obs
5
Pa first
300
Pa last
143
P.A. Now (θ)
143°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
10.08
Mag sec
10.69
delta mag (ΔM)
0.61
Spectral class
M0Ve (red)
Pri motion ra
-019
Sec motion ra
Pri motion dec
+030
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Horologium
HIP
12351
Tycho2
8490-01201-1
GL
GJ 1049
CD
CD-58 538
CP
CP-58 223
Distance
16.84
Distance ly
54.93
last precise pa
143.3
last precise sep
0.075
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.019y Periastron (T)2017.012y Semi-major axis (a)0.15a
Eccentricity (e)0.507 Inclination (i)153.2° Longitude of periastron (ω)180.3°
Node (Ω)308.4° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.169 268.4
2001 0.075 110.1
2002 0.182 341.4
2003 0.226 306.5
2004 0.171 269.4
2005 0.074 115.4
2006 0.180 342.3
2007 0.226 307.1
2008 0.173 270.4
2009 0.074 120.8
2010 0.178 343.2
2011 0.226 307.6
2012 0.175 271.4
2013 0.074 126.1
2014 0.176 344.1
2015 0.226 308.2
2016 0.176 272.3
2017 0.074 131.5
2018 0.174 345.1
2019 0.226 308.8
2020 0.178 273.3
2021 0.074 136.9
2022 0.172 346.1
2023 0.226 309.4
2024 0.180 274.2
2025 0.074 142.3
2026 0.170 347.1
2027 0.226 309.9
2028 0.182 275.1
2029 0.075 147.6
2030 0.168 348.1

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02390-5811 HDS 345 1991 1 300 0.2 10.08 10.69 M0Ve 023901.19-581114.0
02390-5811 HDS 345 2014 2 316 0.2 10.08 10.69 M0Ve 023901.19-581114.0
02390-5811 HDS 345 2015 4 277 0.2 10.08 10.69 M0Ve 023901.19-581114.0

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