00462-2214 RST4155

Coord 2000	00462-2214		Discov num	RST4155		Comp			Coord arcsec 2000	00 46 11.05 -22 14 29.3
Date first	1940		Date last	2019		Obs	17
Pa first	344		Pa last	249		P.A. Now (θ)	57.6°
Sep first	0.2		Sep last	0.2		Sep. Now (ρ)	0.2"
Mag pri	9.76		Mag sec	10.03		delta mag (ΔM)	0.27		Spectral class	G0V (yellow)
Pri motion ra	-014		Sec motion ra
Pri motion dec	+020		Sec motion dec
Notes	O (Orbital solution)

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

Precise pa	248.7		Precise sep	0.155		Constellation	Cetus		SAO	166554
HIP	3606		Tycho2	5849-02187-1		Gaia DR2	84191606144		HD	4397
CD	CD-22 248		CP	CP-22 81		Distance	93.81		Distance ly	306.01
last precise pa	248.7		last precise sep	0.155

Period (P)	48y		Periastron (T)	1957.2y		Semi-major axis (a)	0.195a
Eccentricity (e)	0.2		Inclination (i)	138.5°		Longitude of periastron (ω)	13.5°
Node (Ω)	208.8°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	1983

label rho theta 2000 0.150 243.8 2001 0.153 234.7 2002 0.156 226.0 2003 0.157 217.5 2004 0.157 209.0 2005 0.155 200.4 2006 0.151 191.4 2007 0.146 182.0 2008 0.141 171.9 2009 0.136 161.0 2010 0.133 149.4 2011 0.131 137.4 2012 0.132 125.3 2013 0.136 113.6 2014 0.142 102.7 2015 0.150 92.9 2016 0.159 84.1 2017 0.169 76.3 2018 0.179 69.4 2019 0.189 63.2 2020 0.198 57.6 2021 0.206 52.4 2022 0.214 47.7 2023 0.220 43.2 2024 0.225 39.0 2025 0.229 34.9 2026 0.231 31.0 2027 0.233 27.1 2028 0.233 23.3 2029 0.232 19.4 2030 0.229 15.4 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
00462-2214	RST4155		1991	11	344	0.2	9.76	10.03	G0V	NO	004611.05-221429.3
00462-2214	RST4155		2008	12	335	0.1	9.76	10.03	G0V	NO	004611.05-221429.3
00462-2214	RST4155		2011	13	316	0.1	9.76	10.03	G0V	NO	004611.05-221429.3
00462-2214	RST4155		2015	14	274	0.1	9.76	10.03	G0V	O	004611.05-221429.3
00462-2214	RST4155		2017	15	261	0.1	9.76	10.03	G0V	O	004611.05-221429.3
00462-2214	RST4155		2018	16	255	0.1	9.76	10.03	G0V	O	004611.05-221429.3
00462-2214	RST4155		2019	17	249	0.2	9.76	10.03	G0V	O	004611.05-221429.3

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