15348-2952 BUG   3

 
 
15h 34m 49.84s -29 52' 27.4" P.A. 358.10 sep 0.1 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)
358.1°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.06"
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
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
194
Precise sep
0.213
Constellation
Libra
last precise pa
194
last precise sep
0.213
 
 
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 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 0.025 331.0
2001 0.083 2.9
2002 0.138 8.3
2003 0.181 10.8
2004 0.207 12.4
2005 0.213 13.8
2006 0.200 15.3
2007 0.168 17.1
2008 0.120 20.2
2009 0.061 28.7
2010 0.018 125.4
2011 0.073 181.3
2012 0.130 187.8
2013 0.176 190.5
2014 0.204 192.2
2015 0.214 193.7
2016 0.204 195.1
2017 0.175 196.8
2018 0.129 199.5
2019 0.073 206.1
2020 0.018 261.4
2021 0.060 358.1
2022 0.118 6.8
2023 0.166 10.0
2024 0.199 11.8
2025 0.213 13.3
2026 0.207 14.7
2027 0.182 16.3
2028 0.139 18.8
2029 0.084 24.0
2030 0.025 55.1


 
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
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15348-2952 BUG 3 2000 1 1 0.1 15.50 16.00 DK 153449.84-295227.4
15348-2952 BUG 3 2006 3 15 0.2 15.50 16.00 DK 153449.84-295227.4
15348-2952 BUG 3 2008 12 21 0.1 15.50 16.00 T5.0 T5.5 NODK 153449.84-295227.4
15348-2952 BUG 3 2009 16 39 0.0 15.50 16.00 T5.0+T5.5 NODK 153449.84-295227.4

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