12160+0538 STF 1621

 
 
12h 15m 58.34s +05° 38' 24.8" P.A. 48.00 sep 1.8 mag 10.22,10.59 Sp K8 dist. 28.99 pc (94.57 l.y.)
 
 
Coord 2000 12160+0538 Discov num STF1621 Comp Coord arcsec 2000 12 15 58.34 +05 38 24.8
Date first 1830 Date last 2019 Obs 109
Pa first 124 Pa last 47.6 P.A. Now (θ) 47.6°
Sep first 3.4 Sep last 1.758 Sep. Now (ρ) 1.758"
Mag pri 10.22 Mag sec 10.59 delta mag (ΔM) 0.37 Spectral class K8 (yellow-orange)
Pri motion ra -320 Sec motion ra -320
Pri motion dec -066 Sec motion dec -066
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Virgo HIP 59816 Tycho2 0287-00337-1 Gaia DR2 3894474759723667200
ADS 8486 BD BD+06 2573 Distance 28.99 Distance ly 94.57
 
 
ORBITAL ELEMENTS
 
 
Period (P)1379.8804y± 211.4207 Periastron (T)1973.8179y± 0.1918 Semi-major axis (a)3.9723a± 0.35905
Eccentricity (e)0.90649± 0.01023 Inclination (i)23.329°± 2.938 Longitude of periastron (ω)99.765°± 4.523
Node (Ω)178.461°± 4.706 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 34.2 1.205
2001 35.3 1.236
2002 36.3 1.266
2003 37.3 1.297
2004 38.2 1.327
2005 39.1 1.356
2006 39.9 1.386
2007 40.7 1.415
2008 41.5 1.444
2009 42.3 1.472
2010 43.0 1.500
2011 43.7 1.528
2012 44.4 1.556
2013 45.0 1.583
2014 45.6 1.610
2015 46.2 1.637
2016 46.8 1.664
2017 47.4 1.690
2018 47.9 1.716
2019 48.5 1.742
2020 49.0 1.768
2021 49.5 1.793
2022 50.0 1.818
2023 50.5 1.844
2024 50.9 1.868
2025 51.4 1.893
2026 51.8 1.918
2027 52.2 1.942
2028 52.7 1.966
2029 53.1 1.990
2030 53.5 2.014


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



 
 


wds12160%2B0538b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic