01191+8052 STT  28AB

Coord 2000	01191+8052		Discov num	STT  28		Comp	AB		Coord arcsec 2000	01 19 07.19 +80 51 42.6
Date first	1847		Date last	2006		Obs	44
Pa first	321		Pa last	296		P.A. Now (θ)	283.3°
Sep first	0.6		Sep last	0.9		Sep. Now (ρ)	0.85"
Mag pri	7.55		Mag sec	8.75		delta mag (ΔM)	1.2		Spectral class	F3V (yellow-white)
Pri motion ra	+048		Sec motion ra	+048
Pri motion dec	+004		Sec motion dec	+004
Notes	O (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		218	01191+8052	STT 28	AB	1847	2006	44	283	0.8	7.55	8.75	1.20	Y	<===
Show		218	01191+8052	STTA 14	AB,C	1875	2003	23	24	127.6	7.56	6.69	0.87
Show		221	01191+8052	BU 1359	CD	1897	2015	7	154	70.2	6.69	11.64	4.95

Quadruple system
5 visible stars in this system

Precise pa	296.1		Precise sep	0.87		Constellation	Cepheus		SAO	218
HIP	6167		Tycho2	4505-01169-1		Gaia DR2	0741334656		HD	7471
ADS	1030		BD	BD+80 35		Distance	156.25		Distance ly	509.69
last precise pa	296.1		last precise sep	0.87

Period (P)	870y	± 34	Periastron (T)	1758.4y	± 2.4	Semi-major axis (a)	0.877a	± 0.024
Eccentricity (e)	0.382	± 0.005	Inclination (i)	124.8°	± 0.7	Longitude of periastron (ω)	86.1°	± 3.9
Node (Ω)	136.1°	± 0.3	Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation

label rho theta 2000 0.860 287.9 2001 0.860 287.7 2002 0.859 287.5 2003 0.859 287.2 2004 0.858 287.0 2005 0.857 286.8 2006 0.857 286.6 2007 0.856 286.3 2008 0.856 286.1 2009 0.855 285.9 2010 0.854 285.6 2011 0.854 285.4 2012 0.853 285.2 2013 0.852 285.0 2014 0.852 284.7 2015 0.851 284.5 2016 0.850 284.3 2017 0.849 284.0 2018 0.849 283.8 2019 0.848 283.6 2020 0.847 283.3 2021 0.846 283.1 2022 0.846 282.9 2023 0.845 282.6 2024 0.844 282.4 2025 0.843 282.2 2026 0.842 281.9 2027 0.842 281.7 2028 0.841 281.4 2029 0.840 281.2 2030 0.839 281.0 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
01191+8052	STT 28	AB	2006	43	296	0.9	7.55	8.75	F3V	D	011907.19+805142.6

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