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Current system

19064-3704
HJ 5084
Gam CrA

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19064-3704 HJ 5084 (Gam CrA)

19^h 06^m 25.14^s -37° 03' 48.5" P.A. 325.60 sep 1.5 mag 4.53,6.42 Sp F8V+F8V dist. 17.3 pc (56.43 l.y.)

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	2020		Obs	291
Pa first	217		Pa last	325		P.A. Now (θ)	325.6°
Sep first	1.2		Sep last	1.5		Sep. Now (ρ)	1.51"
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.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	325.2		Precise sep	1.502		Name	Gam CrA		Constellation	Corona Austrina
SAO	210928		HIP	93825		Tycho2	7422-01737-1		Gaia DR2	6719152945032456832
HD	177474		HR	7226		GC	26263		GL	Gl 743.1A
CD	CD-3713048		CP	CP-37 8464		Bayer	Gamma Coronae Austrinae		Bayer name	Gam CrA
Distance	17.3		Distance ly	56.43		last precise pa	325.2		last precise sep	1.502

ORBITAL ELEMENTS

Period (P)	122.2053y	± 0.2386	Periastron (T)	1877.8043y	± 0.0811	Semi-major axis (a)	1.88053a	± 0.00423
Eccentricity (e)	0.31572	± 0.00125	Inclination (i)	147.865°	± 0.455	Longitude of periastron (ω)	345.873°	± 0.94
Node (Ω)	48.725°	± 0.705	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation	2014

label	rho	theta
2000	1.276	60.8
2001	1.285	55.7
2002	1.293	50.7
2003	1.301	45.7
2004	1.308	40.8
2005	1.314	35.9
2006	1.321	31.1
2007	1.326	26.3
2008	1.332	21.6
2009	1.338	16.9
2010	1.344	12.2
2011	1.351	7.6
2012	1.360	3.0
2013	1.369	358.5
2014	1.380	354.1
2015	1.393	349.8
2016	1.407	345.5
2017	1.423	341.3
2018	1.441	337.2
2019	1.461	333.3
2020	1.482	329.4
2021	1.505	325.6
2022	1.529	322.0
2023	1.555	318.5
2024	1.582	315.1
2025	1.611	311.8
2026	1.640	308.6
2027	1.670	305.6
2028	1.701	302.6
2029	1.732	299.8
2030	1.763	297.0

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds19064-3704b.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS HISTORIC DATA

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
19064-3704	HJ 5084		2018	285	333	1.5	4.53	6.42	F8V+F8V	NO	190625.14-370348.5
19064-3704	HJ 5084		2019	287	330	1.5	4.53	6.42	F8V+F8V	NO	190625.14-370348.5

If you need more information about this double, apply for a data request form to the WDS.