19064-3704 HJ 5084 (Gam CrA)

Coord 2000	19064-3704		Discov num	HJ 5084		Comp			Coord arcsec 2000	19 06 25.14 -37 03 48.5
Date first	1834		Date last	2017		Obs	278
Pa first	217		Pa last	338		P.A. Now (θ)	336.6°
Sep first	1.2		Sep last	1.4		Sep. Now (ρ)	1.46"
Mag pri	4.53		Mag sec	6.42		delta mag (ΔM)	1.89		Spectral class	F8V+F8V (yellow-white/yellow-white)
Pri motion ra	+088		Sec motion ra	+088
Pri motion dec	-284		Sec motion dec	-284
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	337.8		Precise sep	1.436		Name	Gam CrA		Constellation	Corona Austrina
SAO	210928		HIP	93825		Tycho2	7422-01737-1		HD	177474
HR	7226		GC	26263		GL	Gl 743.1A		Bayer	Gamma Coronae Austrinae
Bayer name	Gam CrA		Distance	17.3		Distance ly	56.43		last precise pa	337.8
last precise sep	1.436

Period (P)	121.76y		Periastron (T)	2000.64y		Semi-major axis (a)	1.896a
Eccentricity (e)	0.32		Inclination (i)	149.6°		Longitude of periastron (ω)	349°
Node (Ω)	50.3°		Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1985

label rho theta 2000 1.279 63.2 2001 1.286 57.9 2002 1.292 52.7 2003 1.298 47.5 2004 1.304 42.4 2005 1.310 37.3 2006 1.316 32.3 2007 1.322 27.3 2008 1.328 22.3 2009 1.335 17.4 2010 1.343 12.6 2011 1.351 7.8 2012 1.361 3.1 2013 1.373 358.4 2014 1.386 353.9 2015 1.401 349.4 2016 1.418 345.0 2017 1.437 340.8 2018 1.457 336.6 2019 1.480 332.6 2020 1.503 328.7 2021 1.529 324.9 2022 1.556 321.2 2023 1.584 317.7 2024 1.614 314.3 2025 1.644 311.0 2026 1.675 307.9 2027 1.707 304.9 2028 1.739 301.9 2029 1.772 299.1 2030 1.805 296.4 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
19064-3704	HJ 5084		1999	260	62	1.3	4.53	6.42	F8V F8V	NOD	190625.14-370348.5
19064-3704	HJ 5084		2009	263	15	1.3	4.53	6.42	F8V F8V	NOD	190625.14-370348.5
19064-3704	HJ 5084		2010	265	9	1.3	4.53	6.42	F8V F8V	NOD	190625.14-370348.5
19064-3704	HJ 5084		2013	269	0	1.4	4.53	6.42	F8V F8V	NOD	190625.14-370348.5
19064-3704	HJ 5084		2014	273	351	1.4	4.53	6.42	F8V+F8V	NOD	190625.14-370348.5
19064-3704	HJ 5084		2016	274	343	1.6	4.53	6.42	F8V+F8V	NO	190625.14-370348.5
19064-3704	HJ 5084		2017	278	338	1.4	4.53	6.42	F8V+F8V	NO	190625.14-370348.5

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