01106+5101 BU  235Aa,Ab

Coord 2000	01106+5101		Discov num	BU  235		Comp	Aa,Ab		Coord arcsec 2000	01 10 34.31 +51 00 47.8
Date first	1875		Date last	2016		Obs	111
Pa first	74		Pa last	141		P.A. Now (θ)	140.5°
Sep first	0.5		Sep last	0.9		Sep. Now (ρ)	0.8"
Mag pri	7.54		Mag sec	7.82		delta mag (ΔM)	0.28		Spectral class	F5V (yellow-white)
Pri motion ra	+001		Sec motion ra	+001
Pri motion dec	+021		Sec motion dec	+021
Notes	O (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			01106+5101	BU 235	Aa,Ab	1875	2016	111	140	0.8	7.54	7.82	0.28	Y	<===
Show			01106+5101	BU 235	AB	1868	2015	29	283	44.0	7.54	10.77	3.23
Show			01106+5101	STTA 12	AC	1847	2015	34	69	58.2	7.54	10.26	2.72
Show			01106+5101	BU 235	BD	1878	2015	10	77	9.4	10.77	12.70	1.93
Show			01106+5101	STT 24	CE	1845	2015	23	47	7.9	10.26	12.00	1.74

Sextuple system
5 visible stars in this system

Precise pa	140.7		Precise sep	0.855		Constellation	Cassiopeia		SAO	22060
HIP	5512		Tycho2	3276-01219-1		Gaia DR2	2556810880		HD	6918
ADS	963		BD	BD+50 228		Distance	104.6		Distance ly	341.21
last precise pa	140.7		last precise sep	0.855

Period (P)	278y		Periastron (T)	1810y		Semi-major axis (a)	0.74a
Eccentricity (e)	0.442		Inclination (i)	52.5°		Longitude of periastron (ω)	163.4°
Node (Ω)	122.3°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1999

label rho theta 2000 0.944 130.9 2001 0.938 131.3 2002 0.932 131.8 2003 0.925 132.2 2004 0.919 132.7 2005 0.912 133.1 2006 0.906 133.6 2007 0.899 134.1 2008 0.892 134.6 2009 0.884 135.1 2010 0.877 135.6 2011 0.869 136.1 2012 0.861 136.6 2013 0.854 137.1 2014 0.845 137.7 2015 0.837 138.2 2016 0.829 138.8 2017 0.820 139.3 2018 0.811 139.9 2019 0.802 140.5 2020 0.793 141.1 2021 0.784 141.7 2022 0.774 142.4 2023 0.765 143.0 2024 0.755 143.7 2025 0.745 144.4 2026 0.735 145.1 2027 0.725 145.8 2028 0.714 146.6 2029 0.704 147.3 2030 0.693 148.1 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
01106+5101	BU 235	Aa,Ab	2005	100	135	0.9	7.54	7.82	F5V	OD	011034.31+510047.8
01106+5101	BU 235	Aa,Ab	2007	102	136	0.9	7.54	7.82	F5V	OD	011034.31+510047.8
01106+5101	BU 235	Aa,Ab	2009	103	137	0.8	7.54	7.82	F5V	OD	011034.31+510047.8
01106+5101	BU 235	Aa,Ab	2012	103	138	0.8	7.54	7.82	F5V	OD	011034.31+510047.8
01106+5101	BU 235	Aa,Ab	2015	107	141	0.8	7.54	7.82	F5V	O	011034.31+510047.8
01106+5101	BU 235	Aa,Ab	2016	111	141	0.9	7.54	7.82	F5V	O	011034.31+510047.8

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