01108+6747 HDS 155

Coord 2000	01108+6747		Discov num	HDS 155		Comp			Coord arcsec 2000	01 10 50.74 +67 46 48.2
Date first	1991		Date last	2013		Obs	26
Pa first	165		Pa last	174		P.A. Now (θ)	125.2°
Sep first	0.1		Sep last	0.1		Sep. Now (ρ)	0.04"
Mag pri	7.22		Mag sec	7.68		delta mag (ΔM)	0.46		Spectral class	G0IV+G0IV (yellow/yellow)
Pri motion ra	+250		Sec motion ra
Pri motion dec	+024		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	174		Precise sep	0.133		Constellation	Cassiopeia		SAO	11614
HIP	5531		Tycho2	4296-01443-1		HD	6840		BD	BD+67 98
Distance	54.64		Distance ly	178.24		last precise pa	174		last precise sep	0.133

Period (P)	7.3y	± 0.11	Periastron (T)	1995.71y	± 0.11	Semi-major axis (a)	0.087a	± 0.002
Eccentricity (e)	0.72	± 0.008	Inclination (i)	54.7°	± 1.5	Longitude of periastron (ω)	219.1°	± 1.4
Node (Ω)	151.6°	± 1.3	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2004

label rho theta 2000 0.118 183.0 2001 0.090 196.8 2002 0.052 228.5 2003 0.022 353.4 2004 0.087 148.8 2005 0.123 162.1 2006 0.132 171.0 2007 0.124 180.0 2008 0.100 191.9 2009 0.064 214.9 2010 0.032 296.3 2011 0.067 141.2 2012 0.116 158.9 2013 0.132 168.4 2014 0.128 177.1 2015 0.108 187.7 2016 0.076 205.6 2017 0.038 259.3 2018 0.041 125.2 2019 0.106 155.3 2020 0.129 165.8 2021 0.131 174.4 2022 0.116 184.1 2023 0.087 198.7 2024 0.048 234.5 2025 0.016 38.4 2026 0.092 150.7 2027 0.125 163.0 2028 0.132 171.8 2029 0.122 181.0 2030 0.097 193.4 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
01108+6747	HDS 155		2007	11	184	0.1	7.22	7.68	G0	D	011050.36+674648.1
01108+6747	HDS 155		2008	20	199	0.1	7.22	7.68	G0IV G0IV	D	011050.36+674648.1
01108+6747	HDS 155		2009	21	243	0.0	7.22	7.68	G0IV G0IV	D	011050.36+674648.1
01108+6747	HDS 155		2012	22	165	0.1	7.22	7.68	G0IV G0IV	NOD	011050.36+674648.1
01108+6747	HDS 155		2013	26	174	0.1	7.22	7.68	G0IV+G0IV	NO	011050.74+674648.2

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