14020-2108 WSI  79

 
 
14H 01M 59.80S -21 08' 00.3" P.A. 212.9 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
2015
Obs
8
Pa first
352
Pa last
120
P.A. Now (θ)
212.9°
Sep first
0.3
Sep last
0.0
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
 
 
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)137.2°± 3.1 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.271 178.8
2001 0.289 174.7
2002 0.303 171.0
2003 0.313 167.6
2004 0.319 164.3
2005 0.322 161.2
2006 0.321 158.0
2007 0.315 154.8
2008 0.305 151.4
2009 0.290 147.8
2010 0.269 143.6
2011 0.242 138.7
2012 0.207 132.2
2013 0.162 122.6
2014 0.102 103.3
2015 0.046 23.1
2016 0.072 275.8
2017 0.108 233.5
2018 0.146 212.9
2019 0.181 200.6
2020 0.213 192.2
2021 0.240 185.9
2022 0.263 180.7
2023 0.282 176.3
2024 0.298 172.5
2025 0.309 169.0
2026 0.317 165.7
2027 0.321 162.5
2028 0.322 159.3
2029 0.318 156.2
2030 0.310 152.9

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