13527-1843 WSI 78 (DL Vir)

 
 
13h 52m 38.84s -18° 42' 32.5" P.A. 113.00 sep 0.0 mag 7.40,8.20 Sp A3V+K1V dist. 218.82 pc (713.79 l.y.)
 
 
Coord 2000 13527-1843 Discov num WSI  78 Comp Coord arcsec 2000 13 52 38.84 -18 42 32.5
Date first 2008 Date last 2021 Obs 15
Pa first 101 Pa last 113 P.A. Now (θ) 124.8°
Sep first 0.0 Sep last 0.033 Sep. Now (ρ) 0.042"
Mag pri 7.40 Mag sec 8.20 delta mag (ΔM) 0.8 Spectral class A3V+K1V (white/yellow-orange)
Pri motion ra -049 Sec motion ra
Pri motion dec +006 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DL Vir Constellation Virgo SAO 158210 HIP 67744
Tycho2 6140-00715-1 Gaia DR2 6293889335197400064 HD 120901 GC 18747
BD BD-17 3949 Distance 218.82 Distance ly 713.79
 
 
ORBITAL ELEMENTS
 
 
Period (P)6.489y Periastron (T)1981.962y Semi-major axis (a)0.035a
Eccentricity (e)0.651 Inclination (i)68.4° Longitude of periastron (ω)58.2°
Node (Ω)288° Notesn ReferenceMsn2019
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 202.8 0.016
2001 272.2 0.018
2002 103.2 0.025
2003 119.2 0.042
2004 129.9 0.041
2005 144.2 0.032
2006 173.7 0.020
2007 241.0 0.016
2008 6.4 0.005
2009 113.2 0.037
2010 124.6 0.042
2011 136.3 0.037
2012 155.8 0.026
2013 204.3 0.016
2014 273.5 0.018
2015 103.9 0.026
2016 119.4 0.042
2017 130.2 0.041
2018 144.6 0.032
2019 174.7 0.020
2020 242.6 0.016
2021 24.7 0.005
2022 113.5 0.037
2023 124.8 0.042
2024 136.6 0.037
2025 156.5 0.026
2026 206.0 0.016
2027 274.8 0.018
2028 104.5 0.026
2029 119.7 0.042
2030 130.4 0.040


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


 
  


wds13527-1843b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic