00345-0433 D     2AB

Coord 2000	00345-0433		Discov num	D     2		Comp	AB		Coord arcsec 2000	00 34 29.79 -04 32 47.5
Date first	1858		Date last	2019		Obs	71
Pa first	237		Pa last	76		P.A. Now (θ)	77.4°
Sep first	0.4		Sep last	0.3		Sep. Now (ρ)	0.29"
Mag pri	7.63		Mag sec	8.04		delta mag (ΔM)	0.41		Spectral class	G0IV (yellow)
Pri motion ra	+100		Sec motion ra	+085
Pri motion dec	+010		Sec motion dec	+005
Notes	N O (See Notes, Orbital solution)

rPM=0.157 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			00 34 30 -04 32 48	D 2 AB	2019	71	77	0.3	7.63	8.04	0.41	Y	<===
Show			00 34 30 -04 32 48	STF 39 AB,C	2018	60	45	20.1	7.10	8.65	1.55
Show			00 34 30 -04 32 48	ALL 1 AB,D	2017	12	159	200.8	7.10	9.99	2.89

Quadruple system
5 visible stars in this system

Precise pa	76.1		Precise sep	0.262		Constellation	Cetus		HIP	2713
Tycho2	4675-00561-1		Gaia DR2	2528217934557758464		HD	3125		ADS	475
BD	BD-05 83		Distance	77.46		Distance ly	252.67		last precise pa	76.1
last precise sep	0.262

Period (P)	777y		Periastron (T)	2008.5y		Semi-major axis (a)	1.111a
Eccentricity (e)	0.79		Inclination (i)	77.6°		Longitude of periastron (ω)	270.4°
Node (Ω)	83°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2019

label rho theta 2000 0.210 273.8 2001 0.189 275.7 2002 0.167 278.0 2003 0.145 281.1 2004 0.123 285.4 2005 0.101 291.4 2006 0.080 300.7 2007 0.062 315.9 2008 0.051 340.1 2009 0.052 9.4 2010 0.064 32.5 2011 0.083 46.7 2012 0.104 55.5 2013 0.126 61.3 2014 0.148 65.4 2015 0.170 68.4 2016 0.191 70.7 2017 0.212 72.5 2018 0.232 74.1 2019 0.251 75.4 2020 0.269 76.5 2021 0.287 77.4 2022 0.304 78.3 2023 0.320 79.1 2024 0.336 79.8 2025 0.350 80.4 2026 0.364 81.0 2027 0.378 81.6 2028 0.391 82.1 2029 0.403 82.5 2030 0.415 83.0		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
00345-0433	D 2	AB	1995	58	268	0.3	7.63	8.04	G1IV	OD	003429.75-043247.5
00345-0433	D 2	AB	2008	63	183	0.0	7.63	8.04	G1IV	OD	003429.75-043247.5
00345-0433	D 2	AB	2009	67	205	0.1	7.63	8.04	G1IV	NOD	003429.75-043247.5
00345-0433	D 2	AB	2011	68	48	0.1	7.63	8.04	G1IV	NOD	003429.75-043247.5
00345-0433	D 2	AB	2015	69	71	0.2	7.63	8.04	G0IV	NO	003429.75-043247.5
00345-0433	D 2	AB	2017	70	74	0.2	7.63	8.04	G0IV	NO	003429.79-043247.5
00345-0433	D 2	AB	2019	71	76	0.3	7.63	8.04	G0IV	NO	003429.79-043247.5

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