15348-2952 BUG 3

 
 
15h 34m 49.84s -29° 52' 27.4" P.A. 194.00 sep 0.2 mag 15.50,16.00 Sp T4.5+T5.0
 
 
Coord 2000 15348-2952 Discov num BUG   3 Comp Coord arcsec 2000 15 34 49.84 -29 52 27.4
Date first 2000 Date last 2015 Obs 32
Pa first 357 Pa last 194 P.A. Now (θ) 10°
Sep first 0.1 Sep last 0.213 Sep. Now (ρ) 0.166"
Mag pri 15.50 Mag sec 16.00 delta mag (ΔM) 0.5 Spectral class T4.5+T5.0 (brown dwarf/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 Libra
 
 
ORBITAL ELEMENTS
 
 
Period (P)20.38y± 0.06 Periastron (T)62400d (2029.721y)± 900 Semi-major axis (a)213.92m± 0.27
Eccentricity (e)0.0058± 0.0028 Inclination (i)85.55°± 0.08 Longitude of periastron (ω)80°± 40
Node (Ω)13.61°± 0.05 Notesn ReferenceDip2017
Equinox Last observation2015 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 331.0 0.025
2001 2.9 0.083
2002 8.3 0.138
2003 10.8 0.181
2004 12.4 0.207
2005 13.8 0.213
2006 15.3 0.200
2007 17.1 0.168
2008 20.2 0.120
2009 28.7 0.061
2010 125.4 0.018
2011 181.3 0.073
2012 187.8 0.130
2013 190.5 0.176
2014 192.2 0.204
2015 193.7 0.214
2016 195.1 0.204
2017 196.8 0.175
2018 199.5 0.129
2019 206.1 0.073
2020 261.4 0.018
2021 358.1 0.060
2022 6.8 0.118
2023 10.0 0.166
2024 11.8 0.199
2025 13.3 0.213
2026 14.7 0.207
2027 16.3 0.182
2028 18.8 0.139
2029 24.0 0.084
2030 55.1 0.025


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



 
 


wds15348-2952c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic