01061-4643 SLR   1AB (Bet Phe)

Coord 2000	01061-4643		Discov num	SLR   1		Comp	AB		Coord arcsec 2000	01 06 05.10 -46 43 06.4
Date first	1891		Date last	2016		Obs	84
Pa first	26		Pa last	84		P.A. Now (θ)	79.7°
Sep first	0.9		Sep last	0.7		Sep. Now (ρ)	0.62"
Mag pri	4.10		Mag sec	4.19		delta mag (ΔM)	0.09		Spectral class	G8IIIv (yellow)
Pri motion ra	-027		Sec motion ra	-027
Pri motion dec	+006		Sec motion dec	+006
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Bet Phe	215365	01061-4643	SLR 1	AB	1891	2016	84	80	0.6	4.10	4.19	0.09	Y	<===
Show		215365	01061-4643	HJ 3417	AB,C	1834	2013	11	55	66.1	3.46	11.50	8.04

Triple system
4 visible stars in this system

Precise pa	83.8		Precise sep	0.7		Name	Bet Phe		Constellation	Phoenix
SAO	215365		HIP	5165		Tycho2	8032-01228-1		HD	6595
HR	322		GC	1335		CD	CD-47 324		CP	CP-47 129
Bayer	Beta Phoenicis		Bayer name	Bet Phe		Distance	8333.33		Distance ly	27183.32
last precise pa	83.8		last precise sep	0.7

Period (P)	170.7y	± 5	Periastron (T)	2003.41y	± 0.1	Semi-major axis (a)	0.946a	± 0.016
Eccentricity (e)	0.718	± 0.016	Inclination (i)	144°	± 1.5	Longitude of periastron (ω)	293.5°	± 4.4
Node (Ω)	126.4°	± 3.5	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2013

label rho theta 2000 0.281 253.5 2001 0.247 238.0 2002 0.225 218.6 2003 0.221 196.9 2004 0.235 176.2 2005 0.262 158.8 2006 0.294 145.0 2007 0.328 134.0 2008 0.362 125.1 2009 0.394 117.6 2010 0.424 111.2 2011 0.453 105.7 2012 0.480 100.8 2013 0.506 96.4 2014 0.531 92.5 2015 0.556 88.9 2016 0.579 85.6 2017 0.601 82.5 2018 0.623 79.7 2019 0.645 77.1 2020 0.665 74.6 2021 0.686 72.2 2022 0.705 70.0 2023 0.725 68.0 2024 0.743 66.0 2025 0.762 64.1 2026 0.780 62.3 2027 0.797 60.6 2028 0.815 59.0 2029 0.831 57.4 2030 0.848 55.9 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
01061-4643	SLR 1	AB	2008	66	118	0.4	4.10	4.19	G8IIIv	NOD	010605.11-464306.6
01061-4643	SLR 1	AB	2009	74	113	0.4	4.10	4.19	G8IIIv	NOD	010605.11-464306.6
01061-4643	SLR 1	AB	2010	75	106	0.4	4.10	4.19	G8IIIv	NOD	010605.11-464306.6
01061-4643	SLR 1	AB	2013	79	93	0.5	4.10	4.19	G8IIIv	NO	010605.11-464306.6
01061-4643	SLR 1	AB	2014	82	92	0.5	4.10	4.19	G8IIIv	NO	010605.11-464306.6
01061-4643	SLR 1	AB	2016	84	84	0.7	4.10	4.19	G8IIIv	NO	010605.10-464306.4

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