13044-1316 HU 642 AB

 
 
13h 04m 26.98s -13° 15' 45.8" P.A. 41.00 sep 0.5 mag 10.66,10.41 Sp G0 dist. 132.28 pc (431.5 l.y.)
 
 
Coord 2000 13044-1316 Discov num HU  642 Comp AB Coord arcsec 2000 13 04 26.98 -13 15 45.8
Date first 1900 Date last 2019 Obs 36
Pa first 203 Pa last 40.9 P.A. Now (θ) 40.9°
Sep first 0.3 Sep last 0.504 Sep. Now (ρ) 0.504"
Mag pri 10.66 Mag sec 10.41 delta mag (ΔM) 0.25 Spectral class G0 (yellow)
Pri motion ra -053 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
13044-1316 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 13 04 27 -13 15 46 HU 642 AB 2019 36 41 0.5 10.66 10.41 0.25 Y <===
Show 13 04 27 -13 15 46 HU 642 AC 2019 3 17 1.6 10.66 14.20 3.54
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Virgo HIP 63789 Tycho2 5542-00477-1 ADS 8762
BD BD-12 3747 Distance 132.28 Distance ly 431.5
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier13044-1316 HU 642
coord_arcsec_2000130426.98-131545.8
Period (P)660y± 80 Periastron (T)1955y± 2 Semi-major axis (a)0.705a± 0.048
Eccentricity (e)0.408± 0.057 Inclination (i)106.9°± 1 Longitude of periastron (ω)124.8°± 2.2
Node (Ω)47.5°± 1 Notes ReferenceDoc2018l
Equinox2000 Last observation2018 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 226.7 0.482
2001 226.4 0.484
2002 226.1 0.486
2003 225.8 0.488
2004 225.5 0.490
2005 225.2 0.492
2006 224.9 0.493
2007 224.6 0.494
2008 224.3 0.496
2009 224.1 0.497
2010 223.8 0.498
2011 223.5 0.499
2012 223.2 0.500
2013 222.9 0.501
2014 222.6 0.501
2015 222.3 0.502
2016 222.0 0.502
2017 221.8 0.503
2018 221.5 0.503
2019 221.2 0.503
2020 220.9 0.503
2021 220.6 0.503
2022 220.3 0.503
2023 220.0 0.503
2024 219.8 0.503
2025 219.5 0.502
2026 219.2 0.502
2027 218.9 0.501
2028 218.6 0.501
2029 218.3 0.500
2030 218.0 0.499


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



 
 


wds13044-1316c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic