01477-4358 I    52

Coord 2000	01477-4358		Discov num	I    52		Comp			Coord arcsec 2000	01 47 40.54 -43 58 16.2
Date first	1896		Date last	2016		Obs	35
Pa first	180		Pa last	208		P.A. Now (θ)	206.5°
Sep first	1.0		Sep last	0.5		Sep. Now (ρ)	0.53"
Mag pri	8.47		Mag sec	9.10		delta mag (ΔM)	0.63		Spectral class	F6+F9 (yellow-white/yellow-white)
Pri motion ra	+050		Sec motion ra	+050
Pri motion dec	-013		Sec motion dec	-013
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	207.6		Precise sep	0.525		Cdsa2 id	I 52		Constellation	Phoenix
SAO	215655		HIP	8353		Tycho2	7549-00351-1		HD	11057
CD	CD-44 522		CP	CP-44 220		Ra deg	1.7945944444444444		De deg	-43.97116666666667
Distance	188.68		Distance ly	615.47		last precise pa	207.6		last precise sep	0.525

Period (P)	223.9y	± 8	Periastron (T)	1969.74y	± 1	Semi-major axis (a)	0.372a	± 0.01
Eccentricity (e)	0.847	± 0.017	Inclination (i)	150.4°	± 9	Longitude of periastron (ω)	12.5°	± 6.5
Node (Ω)	20.9°	± 6	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2015

label rho theta 2000 0.406 215.0 2001 0.414 214.4 2002 0.422 213.8 2003 0.429 213.3 2004 0.437 212.7 2005 0.445 212.2 2006 0.452 211.7 2007 0.459 211.2 2008 0.466 210.7 2009 0.473 210.2 2010 0.479 209.8 2011 0.486 209.3 2012 0.492 208.9 2013 0.498 208.5 2014 0.504 208.1 2015 0.510 207.7 2016 0.516 207.3 2017 0.522 206.9 2018 0.527 206.5 2019 0.533 206.2 2020 0.538 205.8 2021 0.543 205.5 2022 0.549 205.1 2023 0.553 204.8 2024 0.558 204.4 2025 0.563 204.1 2026 0.568 203.8 2027 0.572 203.5 2028 0.577 203.2 2029 0.581 202.9 2030 0.585 202.6 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
01477-4358	I 52		1996	30	220	0.4	8.47	9.10	F6/7V	NOD	014740.54-435816.2
01477-4358	I 52		2008	32	210	0.5	8.47	9.10	F6/7V	NOD	014740.54-435816.2
01477-4358	I 52		2010	33	209	0.5	8.47	9.10	F6/7V	NOD	014740.54-435816.2
01477-4358	I 52		2015	34	208	0.5	8.47	9.10	F6/7V	O	014740.54-435816.2
01477-4358	I 52		2016	35	208	0.5	8.47	9.10	F6+F9	NO	014740.54-435816.2

If you need more information about this double, apply for a data request form to the WDS.