14330-4224 HDS2054

Coord 2000	14330-4224		Discov num	HDS2054		Comp			Coord arcsec 2000	14 32 57.08 -42 24 19.5
Date first	1991		Date last	2019		Obs	14
Pa first	1		Pa last	26		P.A. Now (θ)	23.9°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.1"
Mag pri	8.39		Mag sec	8.89		delta mag (ΔM)	0.5		Spectral class	A7/A8IV (white)
Pri motion ra	-021		Sec motion ra
Pri motion dec	-018		Sec motion dec
Notes	O (Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	26.2		Precise sep	0.091		Constellation	Centaurus		SAO	225011
HIP	71140		Tycho2	7814-01676-1		Gaia DR2	19062376192		HD	127498
CD	CD-41 8864		CP	CP-41 6817		Distance	129.03		Distance ly	420.9
last precise pa	26.2		last precise sep	0.091

Period (P)	66.5y	± 22.2	Periastron (T)	1997.84y	± 2.36	Semi-major axis (a)	0.207a	± 0.049
Eccentricity (e)	0.8		Inclination (i)	97.5°	± 1.6	Longitude of periastron (ω)	116°	± 6
Node (Ω)	356.7°	± 2.2	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000 0.070 171.4 2001 0.072 167.9 2002 0.069 164.2 2003 0.065 160.2 2004 0.059 155.5 2005 0.053 149.7 2006 0.047 142.5 2007 0.042 133.2 2008 0.037 121.5 2009 0.035 107.4 2010 0.034 91.9 2011 0.036 77.1 2012 0.040 64.4 2013 0.045 54.2 2014 0.051 46.4 2015 0.058 40.3 2016 0.065 35.5 2017 0.073 31.7 2018 0.080 28.6 2019 0.088 26.0 2020 0.095 23.9 2021 0.103 22.0 2022 0.110 20.4 2023 0.117 19.0 2024 0.124 17.7 2025 0.131 16.6 2026 0.138 15.6 2027 0.144 14.7 2028 0.151 13.9 2029 0.157 13.1 2030 0.163 12.4 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
14330-4224	HDS2054		1991	1	1	0.2	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2009	3	108	0.0	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2013	4	234	0.0	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2014	5	44	0.1	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2015	6	39	0.1	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2017	12	31	0.1	8.39	8.89	A7/A8IV		143257.08-422419.5
14330-4224	HDS2054		2018	13	29	0.1	8.39	8.89	A7/A8IV	O	143257.08-422419.5
14330-4224	HDS2054		2019	14	26	0.1	8.39	8.89	A7/A8IV	O	143257.08-422419.5

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