09263+5847 BUG 9

Coord 2000	09263+5847		Discov num	BUG   9		Comp			Coord arcsec 2000	09 26 15.37 +58 47 21.2
Date first	2004		Date last	2004		Obs	2
Pa first	133		Pa last	134.2		P.A. Now (θ)	134.2°
Sep first	0.1		Sep last	0.067		Sep. Now (ρ)	0.067"
Mag pri	17.14		Mag sec	17.54		delta mag (ΔM)	0.4		Spectral class	T4+T4 (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.

Constellation

Ursa Major

Period (P)	11.1y	± 1.9	Periastron (T)	60500d (2024.519y)	± 800	Semi-major axis (a)	80m	± 8
Eccentricity (e)	0.48	± 0.22	Inclination (i)	91.3°	± 0.8	Longitude of periastron (ω)	277°	± 17
Node (Ω)	133.4°	± 0.6	Notes	n		Reference	Dup2017
Equinox			Last observation	2010		Grade	5	(1=Definitive, 9=Indet.)

label theta rho 2000 314.2 0.075 2001 313.4 0.066 2002 310.7 0.019 2003 133.9 0.047 2004 132.7 0.066 2005 131.6 0.056 2006 129.6 0.035 2007 117.1 0.009 2008 321.8 0.018 2009 316.6 0.043 2010 315.1 0.063 2011 314.3 0.074 2012 313.5 0.068 2013 311.5 0.026 2014 134.1 0.043 2015 132.8 0.066 2016 131.8 0.058 2017 129.9 0.037 2018 120.8 0.012 2019 323.3 0.015 2020 316.8 0.041 2021 315.2 0.062 2022 314.4 0.074 2023 313.6 0.070 2024 312.0 0.032 2025 134.3 0.038 2026 132.9 0.065 2027 131.9 0.059 2028 130.2 0.040 2029 123.1 0.015 2030 325.4 0.013		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic