00243+5201 HU  506 (V746 Cas)

Coord 2000	00243+5201		Discov num	HU  506		Comp			Coord arcsec 2000	00 24 15.64 +52 01 11.7
Date first	1902		Date last	2007		Obs	40
Pa first	217		Pa last	94		P.A. Now (θ)	140.4°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.11"
Mag pri	5.95		Mag sec	6.84		delta mag (ΔM)	0.89		Spectral class	B5IV (blue-white)
Pri motion ra	+017		Sec motion ra
Pri motion dec	-003		Sec motion dec
Notes	N O (See Notes, Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	94.3		Precise sep	0.11		Var name	V746 Cas		Constellation	Cassiopeia
SAO	21366		HIP	1921		Gaia DR2	8901801728		HD	1976
HR	91		ADS	328		BD	BD+51 62		Distance	306.75
Distance ly	1000.62		last precise pa	94.3		last precise sep	0.11

Period (P)	169.76y	± 3.29	Periastron (T)	1953.643y	± 2.245	Semi-major axis (a)	0.211a	± 0.097
Eccentricity (e)	0.176	± 0.023	Inclination (i)	64°	± 16	Longitude of periastron (ω)	308.2°	± 9.4
Node (Ω)	29°	± 12	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2004

label rho theta 2000 0.128 72.9 2001 0.125 75.4 2002 0.122 78.1 2003 0.119 80.9 2004 0.116 83.9 2005 0.114 86.9 2006 0.112 90.1 2007 0.110 93.5 2008 0.108 96.9 2009 0.106 100.5 2010 0.105 104.1 2011 0.104 107.8 2012 0.104 111.6 2013 0.104 115.3 2014 0.104 119.1 2015 0.105 122.9 2016 0.105 126.6 2017 0.107 130.2 2018 0.108 133.7 2019 0.110 137.1 2020 0.112 140.4 2021 0.115 143.6 2022 0.117 146.6 2023 0.120 149.5 2024 0.123 152.3 2025 0.126 154.9 2026 0.130 157.4 2027 0.133 159.7 2028 0.137 162.0 2029 0.140 164.1 2030 0.144 166.1 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
00243+5201	HU 506		2007	40	94	0.1	5.95	6.84	B5IV	NO	002415.64+520111.7

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