02517-5234 HU 1562

 
 
02h 51m 42.71s -52 33' 34.2" P.A. 35.4 sep 0.13 mag 8.79,9.71 Sp G3V dist. 78.68 pc (256.65 l.y.)
 
 
Coord 2000
02517-5234
Discov num
HU 1562
Comp
Coord arcsec 2000
02 51 42.71 -52 33 34.2
Date first
1914
Date last
2017
Obs
23
Pa first
59
Pa last
36
P.A. Now (θ)
35.4°
Sep first
0.5
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
8.79
Mag sec
9.71
delta mag (ΔM)
0.92
Spectral class
G3V (yellow)
Pri motion ra
-015
Sec motion ra
-015
Pri motion dec
-112
Sec motion dec
-112
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
35.9
Precise sep
0.124
Constellation
Horologium
SAO
232919
HIP
13341
Tycho2
8491-01096-1
HD
18025
CP
CP-53 489
Distance
78.68
Distance ly
256.65
last precise pa
35.9
last precise sep
0.124
 
 
ORBITAL ELEMENTS
 
 
Period (P)65y± 6.18 Periastron (T)2021.92y± 0.35 Semi-major axis (a)0.264a± 0.005
Eccentricity (e)0.876± 0.029 Inclination (i)111.7°± 5.2 Longitude of periastron (ω)6.1°± 10.4
Node (Ω)237.4°± 3.1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.447 51.9
2001 0.439 51.6
2002 0.430 51.2
2003 0.419 50.8
2004 0.408 50.4
2005 0.397 50.0
2006 0.384 49.5
2007 0.370 49.1
2008 0.355 48.5
2009 0.339 48.0
2010 0.323 47.3
2011 0.304 46.6
2012 0.285 45.8
2013 0.264 44.9
2014 0.241 43.9
2015 0.217 42.5
2016 0.190 40.9
2017 0.162 38.6
2018 0.130 35.4
2019 0.095 29.9
2020 0.057 17.3
2021 0.024 321.5
2022 0.031 229.8
2023 0.033 109.1
2024 0.079 82.5
2025 0.120 75.3
2026 0.156 71.6
2027 0.188 69.3
2028 0.217 67.6
2029 0.244 66.3
2030 0.268 65.3

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

grafico orbita





wds02517-5234a.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
02517-5234 HU 1562 1991 19 53 0.5 8.79 9.71 G3V NOD 025142.71-523334.2
02517-5234 HU 1562 2008 20 48 0.3 8.79 9.71 G3V NOD 025142.71-523334.2
02517-5234 HU 1562 2010 21 47 0.3 8.79 9.71 G3V NOD 025142.71-523334.2
02517-5234 HU 1562 2014 22 43 0.2 8.79 9.71 G3V O 025142.71-523334.2
02517-5234 HU 1562 2017 23 36 0.1 8.79 9.71 G3V O 025142.71-523334.2

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