01424-0645 A     1

Coord 2000	01424-0645		Discov num	A     1		Comp			Coord arcsec 2000	01 42 23.63 -06 45 17.3
Date first	1899		Date last	2019		Obs	72
Pa first	165		Pa last	258		P.A. Now (θ)	255.5°
Sep first	0.3		Sep last	0.8		Sep. Now (ρ)	0.86"
Mag pri	8.90		Mag sec	8.75		delta mag (ΔM)	0.15		Spectral class	F2 (yellow-white)
Pri motion ra	-032		Sec motion ra	-032
Pri motion dec	-046		Sec motion dec	-046
Notes	N O (See Notes, Orbital solution)

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

Precise pa	257.6		Precise sep	0.805		Constellation	Cetus		HIP	7968
Tycho2	4687-01865-1		Gaia DR2	22099897600		HD	10508		ADS	1345
BD	BD-07 282		Distance	190.48		Distance ly	621.35		last precise pa	257.6
last precise sep	0.805

Period (P)	637.62y		Periastron (T)	1888.34y		Semi-major axis (a)	0.844a
Eccentricity (e)	0.454		Inclination (i)	42°		Longitude of periastron (ω)	264.7°
Node (Ω)	232.1°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label rho theta 2000 0.814 247.9 2001 0.816 248.3 2002 0.819 248.7 2003 0.821 249.1 2004 0.823 249.5 2005 0.826 249.9 2006 0.828 250.3 2007 0.830 250.7 2008 0.833 251.0 2009 0.835 251.4 2010 0.837 251.8 2011 0.839 252.2 2012 0.841 252.6 2013 0.843 252.9 2014 0.845 253.3 2015 0.847 253.7 2016 0.849 254.1 2017 0.851 254.4 2018 0.853 254.8 2019 0.855 255.2 2020 0.857 255.5 2021 0.859 255.9 2022 0.861 256.2 2023 0.862 256.6 2024 0.864 257.0 2025 0.866 257.3 2026 0.867 257.7 2027 0.869 258.0 2028 0.871 258.4 2029 0.872 258.7 2030 0.874 259.1 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
01424-0645	A 1		2006	67	250	0.8	8.90	8.75	F2	NOD	014223.63-064517.3
01424-0645	A 1		2008	68	251	0.8	8.90	8.75	F2	NOD	014223.63-064517.3
01424-0645	A 1		2009	69	252	0.8	8.90	8.75	F2	NOD	014223.63-064517.3
01424-0645	A 1		2014	70	254	0.8	8.90	8.75	F2	NO	014223.63-064517.3
01424-0645	A 1		2017	71	254	0.8	8.90	8.75	F2	NO	014223.63-064517.3
01424-0645	A 1		2019	72	258	0.8	8.90	8.75	F2	NO	014223.63-064517.3

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