01078-4129 RST3352 (Ups Phe)

Coord 2000	01078-4129		Discov num	RST3352		Comp			Coord arcsec 2000	01 07 47.83 -41 29 13.0
Date first	1936		Date last	2014		Obs	45
Pa first	306		Pa last	270		P.A. Now (θ)	300.6°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.26"
Mag pri	5.54		Mag sec	6.88		delta mag (ΔM)	1.34		Spectral class	A3IV (white)
Pri motion ra	+038		Sec motion ra
Pri motion dec	+010		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	269.7		Precise sep	0.14		Name	Ups Phe		Constellation	Phoenix
SAO	215374		HIP	5300		Tycho2	7537-00994-1		Gaia DR2	54469123328
HD	6767		HR	331		GC	1378		CD	CD-42 391
CP	CP-42 111		Bayer	Upsilon Phoenicis		Bayer name	Ups Phe		Distance	56.95
Distance ly	185.77		last precise pa	269.7		last precise sep	0.14

Period (P)	28.36y	± 0.04	Periastron (T)	2007.94y	± 0.02	Semi-major axis (a)	0.2396a	± 0.0005
Eccentricity (e)	0.424	± 0.002	Inclination (i)	65.3°	± 0.3	Longitude of periastron (ω)	333.9°	± 0.4
Node (Ω)	142.7°	± 0.3	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation	2007

label rho theta 2000 0.286 328.3 2001 0.260 331.9 2002 0.227 336.6 2003 0.187 343.0 2004 0.141 353.5 2005 0.094 14.6 2006 0.068 61.9 2007 0.092 109.2 2008 0.128 132.2 2009 0.144 146.6 2010 0.138 160.1 2011 0.120 176.7 2012 0.103 199.3 2013 0.099 227.1 2014 0.113 252.1 2015 0.139 269.8 2016 0.169 281.6 2017 0.199 289.8 2018 0.228 295.8 2019 0.255 300.6 2020 0.278 304.5 2021 0.297 307.8 2022 0.311 310.8 2023 0.322 313.5 2024 0.327 316.2 2025 0.327 318.7 2026 0.322 321.3 2027 0.311 324.1 2028 0.294 327.1 2029 0.270 330.5 2030 0.240 334.8 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
01078-4129	RST3352		2001	35	337	0.2	5.54	6.88	A3IV	NOD	010747.83-412913.0
01078-4129	RST3352		2008	38	141	0.1	5.54	6.88	A3IV	NOD	010747.83-412913.0
01078-4129	RST3352		2009	40	336	0.1	5.54	6.88	A3IV	NOD	010747.83-412913.0
01078-4129	RST3352		2014	45	270	0.1	5.54	6.88	A3IV	NO	010747.83-412913.0

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