20526-1609 SPF 2

 
 
20h 52m 35.31s -16° 09' 29.8" P.A. 124.00 sep 0.1 mag 15.57,16.30 Sp L6.0+T2.0
 
 
Coord 2000 20526-1609 Discov num SPF   2 Comp Coord arcsec 2000 20 52 35.31 -16 09 29.8
Date first 2005 Date last 2014 Obs 18
Pa first 13 Pa last 124 P.A. Now (θ) 124°
Sep first 0.1 Sep last 0.146 Sep. Now (ρ) 0.146"
Mag pri 15.57 Mag sec 16.30 delta mag (ΔM) 0.73 Spectral class L6.0+T2.0 (very deep red/brown dwarf)
Pri motion ra Sec motion ra
Pri motion dec Sec motion dec
Notes N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Capricornus
 
 
ORBITAL ELEMENTS
 
 
Period (P)32y Periastron (T)53654.31d (2005.776y) Semi-major axis (a)0.147a
Eccentricity (e)0.005 Inclination (i)45° Longitude of periastron (ω)98°
Node (Ω)327° Notesn ReferenceBGg2015
Equinox2000 Last observation2010 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 351.2 0.136
2001 1.1 0.128
2002 12.4 0.119
2003 25.4 0.111
2004 40.0 0.106
2005 55.8 0.103
2006 71.7 0.105
2007 86.6 0.110
2008 99.9 0.118
2009 111.4 0.127
2010 121.5 0.135
2011 130.5 0.141
2012 138.9 0.145
2013 146.9 0.147
2014 154.9 0.146
2015 163.2 0.142
2016 172.1 0.136
2017 182.0 0.128
2018 193.2 0.120
2019 206.1 0.112
2020 220.6 0.107
2021 236.1 0.104
2022 251.7 0.106
2023 266.3 0.111
2024 279.3 0.119
2025 290.7 0.127
2026 300.7 0.135
2027 309.7 0.141
2028 318.1 0.146
2029 326.1 0.147
2030 334.1 0.146


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



 
 


wds20526-1609a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic