19064-3704 HJ 5084 (Gam CrA)

19^h 06^m 25.14^s -37° 03' 48.5" P.A. 322.00 sep 1.5 mag 5.01,5.05 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	2021		Obs	296
Pa first	217		Pa last	322		P.A. Now (θ)	318.5°
Sep first	1.2		Sep last	1.52		Sep. Now (ρ)	1.555"
Mag pri	5.01		Mag sec	5.05		delta mag (ΔM)	0.04		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

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
Bayer greek	γ CrA

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	Notes	n		Reference	Izm2019
Equinox			Last observation	2014		Grade	2	(1=Definitive, 9=Indet.)

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

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