13143+1320 LAW   2

 
 
13H 14M 20.12S +13 19' 58.3" P.A. 74.8 SEP 0.23 MAG 11.90,12.80
 
 
Coord 2000
13143+1320
Discov num
LAW   2
Comp
Coord arcsec 2000
13 14 20.12 +13 19 58.3
Date first
2005
Date last
2015
Obs
11
Pa first
46
Pa last
50
P.A. Now (θ)
74.8°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.23"
Mag pri
11.90
Mag sec
12.80
delta mag (ΔM)
0.9
Spectral class
Pri motion ra
-244
Sec motion ra
Pri motion dec
-186
Sec motion dec
Notes
N O R (See Notes, Orbital solution, Red magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
last precise pa
49.8
last precise sep
0.167
 
 
ORBITAL ELEMENTS
 
 
Period (P)9.58y± 0.08 Periastron (T)56498.5d (2013.564y)± 1.8 Semi-major axis (a)146.6m± 0.5
Eccentricity (e)0.6011± 0.0024 Inclination (i)49.34°± 0.26 Longitude of periastron (ω)205.6°± 0.7
Node (Ω)60.4°± 0.4 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.207 85.1
2001 0.173 96.7
2002 0.125 115.9
2003 0.076 161.7
2004 0.055 260.0
2005 0.099 27.6
2006 0.172 51.2
2007 0.211 62.5
2008 0.225 71.3
2009 0.219 79.7
2010 0.195 89.4
2011 0.154 103.3
2012 0.102 129.7
2013 0.067 197.4
2014 0.050 335.9
2015 0.134 40.7
2016 0.191 56.5
2017 0.219 66.4
2018 0.225 74.8
2019 0.211 83.5
2020 0.179 94.5
2021 0.133 111.8
2022 0.082 150.9
2023 0.061 239.8
2024 0.085 19.6
2025 0.162 48.8
2026 0.206 61.0
2027 0.224 69.9
2028 0.221 78.3
2029 0.200 87.7
2030 0.162 100.6

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