14462-2111 FIN 309 (17 Lib)

Coord 2000	14462-2111		Discov num	FIN 309		Comp			Coord arcsec 2000	14 46 10.92 -21 10 32.6
Date first	1935		Date last	2017		Obs	66
Pa first	307		Pa last	164		P.A. Now (θ)	170.2°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.22"
Mag pri	7.30		Mag sec	7.30		delta mag (ΔM)	0		Spectral class	G1V (yellow)
Pri motion ra	-058		Sec motion ra
Pri motion dec	-097		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	163.6		Precise sep	0.231		Name	17 Lib		Constellation	Libra
SAO	182858		HIP	72217		Tycho2	6166-00454-1		HD	129980
HR	5504		BD	BD-20 4087		Flamsteed	17 Librae		Flamsteed name	17 Lib
Distance	41.25		Distance ly	134.56		last precise pa	163.6		last precise sep	0.231

Period (P)	12.929y	± 0.021	Periastron (T)	1995.249y	± 0.055	Semi-major axis (a)	0.1814a	± 0.0021
Eccentricity (e)	0.6428	± 0.0051	Inclination (i)	25.9°	± 2.6	Longitude of periastron (ω)	39.5°	± 4.7
Node (Ω)	281.9°	± 4.1	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2009

label rho theta 2000 0.278 125.1 2001 0.287 133.0 2002 0.285 140.7 2003 0.273 148.8 2004 0.251 157.9 2005 0.219 169.3 2006 0.177 185.5 2007 0.123 214.2 2008 0.068 291.6 2009 0.103 56.8 2010 0.176 90.7 2011 0.226 106.3 2012 0.259 117.0 2013 0.279 125.7 2014 0.287 133.5 2015 0.284 141.2 2016 0.272 149.4 2017 0.249 158.6 2018 0.217 170.2 2019 0.173 186.9 2020 0.119 217.2 2021 0.065 301.7 2022 0.109 60.8 2023 0.180 92.1 2024 0.229 107.2 2025 0.261 117.7 2026 0.280 126.3 2027 0.287 134.1 2028 0.284 141.8 2029 0.270 150.0 2030 0.247 159.4 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
14462-2111	FIN 309		2001	55	317	0.3	7.30	7.30	G1V	NOD	144610.92-211032.6
14462-2111	FIN 309		2009	59	70	0.1	7.30	7.30	G1V	NOD	144610.92-211032.6
14462-2111	FIN 309		2010	61	94	0.2	7.30	7.30	G1V	NOD	144610.92-211032.6
14462-2111	FIN 309		2011	62	110	0.2	7.30	7.30	G1V	NOD	144610.92-211032.6
14462-2111	FIN 309		2014	63	136	0.3	7.30	7.30	G1V	NO	144610.92-211032.6
14462-2111	FIN 309		2015	64	143	0.3	7.30	7.30	G1V	NO	144610.92-211032.6
14462-2111	FIN 309		2017	66	164	0.2	7.30	7.30	G1V	NO	144610.92-211032.6

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