01493+4754 CHR   4Aa,Ab

Coord 2000	01493+4754		Discov num	CHR   4		Comp	Aa,Ab		Coord arcsec 2000	01 49 15.47 +47 53 47.1
Date first	1984		Date last	1994		Obs	7
Pa first	194		Pa last	251		P.A. Now (θ)	184.8°
Sep first	0.1		Sep last	0.1		Sep. Now (ρ)	0.14"
Mag pri	6.47		Mag sec			delta mag (ΔM)			Spectral class	A3V (white)
Pri motion ra	-015		Sec motion ra
Pri motion dec	-009		Sec motion dec
Notes	N O (See Notes, Orbital solution)

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

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		37536	01493+4754	CHR 4	Aa,Ab	1984	1994	7	185	0.1	6.47			Y	<===
Show		37536	01493+4754	STF 162	AB	1828	2019	176	198	2.0	6.47	7.22	0.75
Show		37536	01493+4754	STF 162	AC	1828	2019	64	178	20.6	6.47	9.24	2.77
Show		37536	01493+4754	STF 162	AD	1881	2007	11	96	138.7	6.47	10.01	3.54
Show		37536	01493+4754	STF 162	BC	1902	2018	11	177	19.2	7.22	9.24	2.02

Quintuple system
4 visible stars in this system

Precise pa	251.2		Precise sep	0.121		Constellation	Perseus		SAO	37536
HIP	8475		Tycho2	3283-02002-1		Gaia DR2	3445911040		HD	11031
HR	526		ADS	1438		BD	BD+47 508		Distance	127.55
Distance ly	416.07		last precise pa	251.2		last precise sep	0.121

Period (P)	36.9y		Periastron (T)	2004.8y		Semi-major axis (a)	0.122a
Eccentricity (e)	0.234		Inclination (i)	34.4°		Longitude of periastron (ω)	348.6°
Node (Ω)	32°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000 0.089 311.8 2001 0.087 326.9 2002 0.087 342.3 2003 0.089 357.3 2004 0.091 11.6 2005 0.093 25.2 2006 0.094 38.5 2007 0.094 51.6 2008 0.094 64.8 2009 0.093 78.1 2010 0.094 91.4 2011 0.095 104.4 2012 0.098 116.9 2013 0.102 128.5 2014 0.107 139.2 2015 0.113 148.7 2016 0.119 157.4 2017 0.125 165.2 2018 0.131 172.2 2019 0.136 178.8 2020 0.141 184.8 2021 0.145 190.5 2022 0.148 196.0 2023 0.149 201.3 2024 0.150 206.4 2025 0.150 211.6 2026 0.148 216.9 2027 0.146 222.3 2028 0.142 227.9 2029 0.137 233.8 2030 0.132 240.3 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
01493+4754	CHR 4	Aa,Ab	1994	7	251	0.1	6.47		A3V	N	014915.54+475349.0

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