00504+5038 BU  232AB

Coord 2000	00504+5038		Discov num	BU  232		Comp	AB		Coord arcsec 2000	00 50 25.10 +50 37 49.6
Date first	1876		Date last	2016		Obs	118
Pa first	288		Pa last	255		P.A. Now (θ)	256.4°
Sep first	0.5		Sep last	0.9		Sep. Now (ρ)	0.85"
Mag pri	8.46		Mag sec	8.79		delta mag (ΔM)	0.33		Spectral class	F5 (yellow-white)
Pri motion ra	-036		Sec motion ra	-036
Pri motion dec	-007		Sec motion dec	-007
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		21759	00504+5038	BU 232	AB	1876	2016	118	256	0.8	8.46	8.79	0.33	Y	<===
Show		21759	00504+5038	BU 232	AB,C	1875	2015	32	300	24.4	8.46	10.06	1.60

Triple system
4 visible stars in this system

Precise pa	255.2		Precise sep	0.89		Constellation	Cassiopeia		SAO	21759
HIP	3926		Tycho2	3274-01051-1		Gaia DR2	415001627292909440		HD	4777
ADS	684		BD	BD+49 215		Distance	101.11		Distance ly	329.82
last precise pa	255.2		last precise sep	0.89

Period (P)	201y	± 9	Periastron (T)	1914.52y	± 0.29	Semi-major axis (a)	0.531a	± 0.033
Eccentricity (e)	0.621	± 0.014	Inclination (i)	31.9°	± 2.6	Longitude of periastron (ω)	11.4°	± 5.4
Node (Ω)	64.9°	± 5.7	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2006

label rho theta 2000 0.846 247.7 2001 0.848 248.2 2002 0.850 248.6 2003 0.851 249.1 2004 0.852 249.6 2005 0.853 250.0 2006 0.854 250.5 2007 0.855 250.9 2008 0.856 251.4 2009 0.856 251.9 2010 0.856 252.3 2011 0.857 252.8 2012 0.857 253.2 2013 0.857 253.7 2014 0.856 254.1 2015 0.856 254.6 2016 0.856 255.1 2017 0.855 255.5 2018 0.854 256.0 2019 0.853 256.4 2020 0.852 256.9 2021 0.851 257.4 2022 0.850 257.8 2023 0.848 258.3 2024 0.846 258.8 2025 0.845 259.2 2026 0.843 259.7 2027 0.841 260.2 2028 0.838 260.7 2029 0.836 261.1 2030 0.834 261.6 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00504+5038	BU 232	AB	2006	111	250	0.9	8.46	8.79	F5	NOD	005025.10+503749.6
00504+5038	BU 232	AB	2007	112	250	0.9	8.46	8.79	F5	NOD	005025.10+503749.6
00504+5038	BU 232	AB	2009	114	253	0.9	8.46	8.79	F5	NOD	005025.10+503749.6
00504+5038	BU 232	AB	2015	116	256	0.8	8.46	8.79	F5	NO	005025.10+503749.6
00504+5038	BU 232	AB	2016	117	255	0.9	8.46	8.79	F5	NO	005025.10+503749.6

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