14525+1844 BU   31AB

Coord 2000	14525+1844		Discov num	BU   31		Comp	AB		Coord arcsec 2000	14 52 30.05 +18 44 19.5
Date first	1872		Date last	2015		Obs	85
Pa first	180		Pa last	223		P.A. Now (θ)	221.5°
Sep first	1.0		Sep last	1.9		Sep. Now (ρ)	2.01"
Mag pri	8.53		Mag sec	10.26		delta mag (ΔM)	1.73		Spectral class	G0V (yellow)
Pri motion ra	-026		Sec motion ra	-026
Pri motion dec	+198		Sec motion dec	+198
Notes	N O V (See Notes, Orbital solution, Proper motion indicates physical)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		101264	14525+1844	BU 31	AB	1872	2015	85	222	2.0	8.53	10.26	1.73	Y	<===
Show		101264	14525+1844	BU 31	AC	1878	2015	21	168	8.5	8.53	12.50	3.97
Show		101264	14525+1844	BU 31	AD	1897	2015	12	259	90.0	8.53	11.62	3.09

Quadruple system
4 visible stars in this system

Constellation	Bootes		SAO	101264		HIP	72764		Tycho2	1481-00172-1
HD	131334		ADS	9423		BD	BD+19 2874		Distance	48.43
Distance ly	157.98		last precise pa	222.8		last precise sep	1.86

Period (P)	2085.5y		Periastron (T)	1915.06y		Semi-major axis (a)	3.369a
Eccentricity (e)	0.453		Inclination (i)	64.8°		Longitude of periastron (ω)	325.1°
Node (Ω)	215.4°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2013

label rho theta 2000 1.988 218.2 2001 1.990 218.3 2002 1.992 218.5 2003 1.993 218.7 2004 1.995 218.9 2005 1.997 219.1 2006 1.999 219.3 2007 2.000 219.5 2008 2.002 219.6 2009 2.003 219.8 2010 2.004 220.0 2011 2.006 220.2 2012 2.007 220.4 2013 2.008 220.6 2014 2.009 220.8 2015 2.010 220.9 2016 2.011 221.1 2017 2.012 221.3 2018 2.013 221.5 2019 2.014 221.7 2020 2.015 221.9 2021 2.016 222.0 2022 2.016 222.2 2023 2.017 222.4 2024 2.018 222.6 2025 2.018 222.8 2026 2.018 223.0 2027 2.019 223.1 2028 2.019 223.3 2029 2.019 223.5 2030 2.020 223.7 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
14525+1844	BU 31	AB	2005	79	219	2.0	8.53	10.26	G0V	D	145230.05+184419.5
14525+1844	BU 31	AB	2009	81	220	2.0	8.53	10.26	G0V	D	145230.05+184419.5
14525+1844	BU 31	AB	2013	82	220	2.0	8.53	10.26	G0V	N D	145230.05+184419.5
14525+1844	BU 31	AB	2015	85	223	1.9	8.53	10.26	G0V	NO V	145230.05+184419.5

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