11486+1417 BU 603 AB (NSV5344)

Coord 2000	11486+1417		Discov num	BU  603		Comp	AB		Coord arcsec 2000	11 48 38.71 +14 17 03.2
Date first	1878		Date last	2019		Obs	95
Pa first	338		Pa last	328.7		P.A. Now (θ)	325.6°
Sep first	1.5		Sep last	1.011		Sep. Now (ρ)	0.991"
Mag pri	5.97		Mag sec	8.53		delta mag (ΔM)	2.56		Spectral class	A8III (white)
Pri motion ra	-102		Sec motion ra	-102
Pri motion dec	+004		Sec motion dec	+004
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	NSV5344	99800	11 48 39 +14 17 03	BU 603 AB	2019	95	329	1.0	5.97	8.53	2.56	Y	<===
Show		99800	11 48 39 +14 17 03	TOK 552 AC	2016	4	306	999.9	5.97	14.20	8.23

Triple system
3 estimated visually detectable stars in this system

Var name	NSV5344		Constellation	Leo		SAO	99800		HIP	57606
Tycho2	0870-00989-1		Gaia DR2	3923191422165480448		HD	102590		HR	4531
GC	16181		ADS	8311		BD	BD+15 2381		Distance	59.74
Distance ly	194.87

Period (P)	133.8y	± 5.8	Periastron (T)	1937.8y	± 9.3	Semi-major axis (a)	1.03a	± 0.31
Eccentricity (e)	0.9	± 0.57	Inclination (i)	121°	± 114	Longitude of periastron (ω)	93°	± 49
Node (Ω)	253°	± 24	Notes	n		Reference	Msn2021c
Equinox			Last observation	2019		Grade	3	(1=Definitive, 9=Indet.)

label theta rho 2000 340.1 1.006 2001 339.5 1.007 2002 338.9 1.009 2003 338.3 1.010 2004 337.6 1.011 2005 337.0 1.012 2006 336.4 1.013 2007 335.8 1.013 2008 335.1 1.013 2009 334.5 1.013 2010 333.9 1.013 2011 333.3 1.013 2012 332.6 1.012 2013 332.0 1.011 2014 331.4 1.010 2015 330.7 1.009 2016 330.1 1.008 2017 329.5 1.006 2018 328.9 1.004 2019 328.2 1.002 2020 327.6 1.000 2021 326.9 0.997 2022 326.3 0.994 2023 325.6 0.991 2024 325.0 0.988 2025 324.3 0.984 2026 323.7 0.981 2027 323.0 0.977 2028 322.3 0.972 2029 321.6 0.968 2030 320.9 0.963		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic