14020-2108 WSI  79

 
 
14h 01m 59.80s -21 08' 00.3" P.A. 233.5 sep 0.11 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
2015
Obs
8
Pa first
172
Pa last
320
P.A. Now (θ)
233.5°
Sep first
0.3
Sep last
0.0
Sep. Now (ρ)
0.11"
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
320
Precise sep
0.047
Constellation
Virgo
SAO
182179
HIP
68552
Tycho2
6149-00570-1
HD
122391
BD
BD-20 3940
Distance
50.13
Distance ly
163.52
last precise pa
120
last precise sep
0.047
 
 
ORBITAL ELEMENTS
 
 
Period (P)22.41y± 2 Periastron (T)2015.258y± 0.022 Semi-major axis (a)0.1967a± 0.0067
Eccentricity (e)0.735± 0.015 Inclination (i)140.5°± 2.8 Longitude of periastron (ω)146.6°± 5
Node (Ω)317.2°± 3.1 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.271 358.8
2001 0.289 354.7
2002 0.303 351.0
2003 0.313 347.6
2004 0.319 344.3
2005 0.322 341.2
2006 0.321 338.0
2007 0.315 334.8
2008 0.305 331.4
2009 0.290 327.8
2010 0.269 323.6
2011 0.242 318.7
2012 0.207 312.2
2013 0.162 302.6
2014 0.102 283.3
2015 0.046 203.1
2016 0.072 95.8
2017 0.108 53.5
2018 0.146 32.9
2019 0.181 20.6
2020 0.213 12.2
2021 0.240 5.9
2022 0.263 0.7
2023 0.282 356.3
2024 0.298 352.5
2025 0.309 349.0
2026 0.317 345.7
2027 0.321 342.5
2028 0.322 339.3
2029 0.318 336.2
2030 0.310 332.9

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

grafico orbita





wds14020-2108a.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

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