19411+1349 KUI  93 (QS Aql)

Coord 2000	19411+1349		Discov num	KUI  93		Comp			Coord arcsec 2000	19 41 05.53 +13 48 56.5
Date first	1934		Date last	2015		Obs	79
Pa first	137		Pa last	316		P.A. Now (θ)	317°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.18"
Mag pri	6.69		Mag sec	6.75		delta mag (ΔM)	0.06		Spectral class	B5V (blue-white)
Pri motion ra	-002		Sec motion ra
Pri motion dec	-010		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	315.8		Precise sep	0.149		Other name	QS Aql		Var name	QS Aql
Constellation	Aquila		SAO	105132		HIP	96840		Tycho2	1069-03884-1
Gaia DR2	59905694592		HD	185936		HR	7486		GC	27235
BD	BD+13 4098		Distance	2040.82		Distance ly	6657.15		last precise pa	315.8
last precise sep	0.149

Period (P)	77y	± 4.3	Periastron (T)	1962.36y	± 2.3	Semi-major axis (a)	0.111a	± 0.045
Eccentricity (e)	0.947	± 0.038	Inclination (i)	61.2°	± 3.6	Longitude of periastron (ω)	336.8°	± 4.7
Node (Ω)	144.5°	± 5.1	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2015

label rho theta 2000 0.202 312.6 2001 0.203 312.9 2002 0.203 313.1 2003 0.203 313.3 2004 0.203 313.5 2005 0.203 313.7 2006 0.203 313.9 2007 0.202 314.2 2008 0.201 314.4 2009 0.200 314.6 2010 0.199 314.8 2011 0.198 315.1 2012 0.196 315.3 2013 0.195 315.5 2014 0.193 315.8 2015 0.190 316.0 2016 0.188 316.2 2017 0.185 316.5 2018 0.182 316.8 2019 0.179 317.0 2020 0.176 317.3 2021 0.172 317.6 2022 0.168 317.9 2023 0.164 318.2 2024 0.159 318.6 2025 0.155 318.9 2026 0.149 319.3 2027 0.144 319.7 2028 0.138 320.2 2029 0.131 320.7 2030 0.124 321.2 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
19411+1349	KUI 93		2005	79	318	0.2	6.69	6.75	B5V	NOD	194105.53+134856.5
19411+1349	KUI 93		2010	81	311	0.2	6.69	6.75	B5V	NOD	194105.53+134856.5
19411+1349	KUI 93		2015	79	316	0.1	6.69	6.75	B5V	NO	194105.53+134856.5

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