00463-0634 HDS 101

Coord 2000	00463-0634		Discov num	HDS 101		Comp			Coord arcsec 2000	00 46 16.11 -06 33 58.4
Date first	1991		Date last	2019		Obs	12
Pa first	11		Pa last	4		P.A. Now (θ)	3.9°
Sep first	0.1		Sep last	0.1		Sep. Now (ρ)	0.14"
Mag pri	8.93		Mag sec	10.27		delta mag (ΔM)	1.34		Spectral class	F5 (yellow-white)
Pri motion ra	+037		Sec motion ra
Pri motion dec	+005		Sec motion dec
Notes	N O (See Notes, Orbital solution)

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

Precise pa	3.8		Precise sep	0.14		Constellation	Cetus		HIP	3612
Tycho2	4679-00531-1		Gaia DR2	17498080768		HD	4393		BD	BD-07 117
Distance	138.5		Distance ly	451.79		last precise pa	3.8		last precise sep	0.14

Period (P)	30.52y		Periastron (T)	2010.24y		Semi-major axis (a)	0.094a
Eccentricity (e)	0.716		Inclination (i)	21.6°		Longitude of periastron (ω)	144.5°
Node (Ω)	53.8°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2015

label rho theta 2000 0.148 34.5 2001 0.142 37.7 2002 0.136 41.2 2003 0.128 45.0 2004 0.119 49.5 2005 0.108 54.7 2006 0.095 61.3 2007 0.080 70.2 2008 0.062 83.7 2009 0.042 109.5 2010 0.026 176.2 2011 0.034 260.7 2012 0.051 299.5 2013 0.068 319.0 2014 0.082 331.1 2015 0.095 339.7 2016 0.107 346.3 2017 0.117 351.7 2018 0.126 356.3 2019 0.133 0.3 2020 0.140 3.9 2021 0.145 7.2 2022 0.150 10.3 2023 0.153 13.3 2024 0.156 16.1 2025 0.157 18.9 2026 0.158 21.6 2027 0.157 24.3 2028 0.156 27.1 2029 0.153 29.9 2030 0.150 32.9 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
00463-0634	HDS 101		1991	1	11	0.1	8.93	10.27	F5		004616.11-063358.4
00463-0634	HDS 101		2007	2	255	0.1	8.93	10.27	F5	D	004616.11-063358.4
00463-0634	HDS 101		2010	5	242	0.0	8.93	10.27	F5	D	004616.11-063358.4
00463-0634	HDS 101		2015	6	346	0.1	8.93	10.27	F5		004616.11-063358.4
00463-0634	HDS 101		2017	10	356	0.1	8.93	10.27	F5	NO	004616.11-063358.4
00463-0634	HDS 101		2018	11	0	0.1	8.93	10.27	F5	NO	004616.11-063358.4
00463-0634	HDS 101		2019	12	4	0.1	8.93	10.27	F5	NO	004616.11-063358.4

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