14020-2108 WSI  79

 
 
14h 01m 59.80s -21 08' 00.3" P.A. 32.9 sep 0.15 mag 9.30,12.10 Sp K0/1V dist. 50.13 pc (163.52 l.y.)
 
 
Coord 2000
14020-2108
Discov num
WSI  79
Comp
Coord arcsec 2000
14 01 59.80 -21 08 00.3
Date first
2001
Date last
2017
Obs
10
Pa first
352
Pa last
48
P.A. Now (θ)
32.9°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.15"
Mag pri
9.30
Mag sec
12.10
delta mag (ΔM)
2.8
Spectral class
K0/1V (yellow-orange)
Pri motion ra
-203
Sec motion ra
Pri motion dec
-143
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
47.7
Precise sep
0.131
Cdsa2 id
WSI 79
Constellation
Virgo
SAO
182179
HIP
68552
Tycho2
6149-00570-1
HD
122391
BD
BD-20 3940
Ra deg
14.033277777777778
De deg
-21.133416666666665
Distance
50.13
Distance ly
163.52
last precise pa
47.7
last precise sep
0.131
 
 
ORBITAL ELEMENTS
 
 
Period (P)24.46y Periastron (T)2015.22y Semi-major axis (a)0.205a
Eccentricity (e)0.74 Inclination (i)144.7° Longitude of periastron (ω)325.1°
Node (Ω)137.9° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.312 357.1
2001 0.323 353.7
2002 0.332 350.6
2003 0.337 347.5
2004 0.338 344.5
2005 0.337 341.6
2006 0.331 338.5
2007 0.322 335.4
2008 0.309 332.0
2009 0.292 328.2
2010 0.269 323.9
2011 0.240 318.7
2012 0.204 311.8
2013 0.158 301.3
2014 0.100 280.3
2015 0.048 199.0
2016 0.076 96.9
2017 0.114 57.6
2018 0.153 38.3
2019 0.188 26.5
2020 0.219 18.3
2021 0.246 12.0
2022 0.270 6.9
2023 0.289 2.6
2024 0.306 358.7
2025 0.319 355.2
2026 0.328 352.0
2027 0.335 348.9
2028 0.338 345.9
2029 0.338 342.9
2030 0.334 339.9

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

grafico orbita





wds14020-2108c.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
14020-2108 WSI 79 2008 3 150 0.3 9.30 12.10 K0/1V 140159.93-210759.2
14020-2108 WSI 79 2013 4 121 0.2 9.30 12.10 K0/1V 140159.93-210759.2
14020-2108 WSI 79 2014 7 90 0.1 9.30 12.10 K0/1V O 140159.93-210759.2
14020-2108 WSI 79 2015 8 320 0.0 9.30 12.10 K0/1V O 140159.93-210759.2
14020-2108 WSI 79 2017 10 48 0.1 9.30 12.10 K0/1V O 140159.80-210800.3

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