13491+2659 STF 1785 (HD 120476)

 
 
13h 49m 04.00s +26° 58' 47.7" P.A. 193.00 sep 2.7 mag 7.36,8.15 Sp K4V+K6V dist. 13.41 pc (43.74 l.y.)
 
 
Coord 2000 13491+2659 Discov num STF1785 Comp Coord arcsec 2000 13 49 04.00 +26 58 47.7
Date first 1823 Date last 2021 Obs 923
Pa first 160 Pa last 192.6 P.A. Now (θ) 193.7°
Sep first 5.7 Sep last 2.72 Sep. Now (ρ) 2.644"
Mag pri 7.36 Mag sec 8.15 delta mag (ΔM) 0.79 Spectral class K4V+K6V (yellow-orange/yellow-orange)
Pri motion ra -417 Sec motion ra -463
Pri motion dec -112 Sec motion dec -071
Notes N O (See Notes, Orbital solution)
rPM=0.132 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 120476 Constellation Bootes SAO 83011 HIP 67422
Tycho2 2002-00492-1 HD 120476 GC 18670 ADS 9031
GL Gl 528A BD BD+27 2296 Distance 13.41 Distance ly 43.74
 
 
ORBITAL ELEMENTS
 
 
Period (P)156.1355y± 0.4982 Periastron (T)1916.7297y± 0.3174 Semi-major axis (a)2.4432a± 0.00469
Eccentricity (e)0.44695± 0.00244 Inclination (i)47.73°± 0.237 Longitude of periastron (ω)199.619°± 1.522
Node (Ω)155.594°± 0.715 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 172.8 3.350
2001 173.6 3.332
2002 174.3 3.313
2003 175.1 3.292
2004 175.8 3.270
2005 176.6 3.247
2006 177.4 3.223
2007 178.2 3.198
2008 179.0 3.171
2009 179.9 3.143
2010 180.7 3.114
2011 181.6 3.084
2012 182.5 3.053
2013 183.4 3.021
2014 184.3 2.988
2015 185.2 2.954
2016 186.2 2.918
2017 187.2 2.882
2018 188.2 2.845
2019 189.2 2.806
2020 190.3 2.767
2021 191.4 2.727
2022 192.5 2.686
2023 193.7 2.644
2024 194.9 2.602
2025 196.1 2.559
2026 197.4 2.515
2027 198.7 2.470
2028 200.1 2.425
2029 201.5 2.379
2030 203.0 2.333


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



 
 


wds13491%2B2659c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic