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	2017		Obs	15
Pa first	344		Pa last	261		P.A. Now (θ)	249.4°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.18"
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)

This double is physical.

Precise pa	261		Precise sep	0.146		Cdsa2 id	RST 4155		Constellation	Cetus
SAO	166554		HIP	3606		Tycho2	5849-02187-1		HD	4397
CD	CD-22 248		CP	CP-22 81		Ra deg	0.7697361111111112		De deg	-22.241472222222225
Distance	93.81		Distance ly	306.01		last precise pa	261		last precise sep	0.146

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)	28.8°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	1983

label rho theta 2000 0.150 63.8 2001 0.153 54.7 2002 0.156 46.0 2003 0.157 37.5 2004 0.157 29.0 2005 0.155 20.4 2006 0.151 11.4 2007 0.146 2.0 2008 0.141 351.9 2009 0.136 341.0 2010 0.133 329.4 2011 0.131 317.4 2012 0.132 305.3 2013 0.136 293.6 2014 0.142 282.7 2015 0.150 272.9 2016 0.159 264.1 2017 0.169 256.3 2018 0.179 249.4 2019 0.189 243.2 2020 0.198 237.6 2021 0.206 232.4 2022 0.214 227.7 2023 0.220 223.2 2024 0.225 219.0 2025 0.229 214.9 2026 0.231 211.0 2027 0.233 207.1 2028 0.233 203.3 2029 0.232 199.4 2030 0.229 195.4 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

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