00324+0657 MCA   1Aa,Ab

Coord 2000	00324+0657		Discov num	MCA   1		Comp	Aa,Ab		Coord arcsec 2000	00 32 23.75 +06 57 19.6
Date first	1977		Date last	2020		Obs	67
Pa first	279		Pa last	291		P.A. Now (θ)	291.2°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.19"
Mag pri	5.84		Mag sec	7.99		delta mag (ΔM)	2.15		Spectral class	B9.5V (blue-white)
Pri motion ra	+035		Sec motion ra
Pri motion dec	+002		Sec motion dec
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		109262	00324+0657	MCA 1	Aa,Ab	1977	2020	67	291	0.2	5.84	7.99	2.15	Y	<===
Show		109262	00324+0657	OCC9069	Aa,Ac	1975	1975	0		0.2	5.80	9.50	3.70
Show	51 Psc	109262	00324+0657	STF 36	AB	1782	2018	72	84	27.0	5.68	9.52	3.84
Show		109262	00324+0657	STF 36	AC	1893	2011	16	226	174.0	5.68	9.94	4.26
Show		109262	00324+0657	GMC 10	AD	2000	2011	3	309	77.7	5.68	13.10	7.42

Sextuple system
4 visible stars in this system

Precise pa	290.7		Precise sep	0.18		Constellation	Pisces		SAO	109262
HIP	2548		Tycho2	0016-01423-1		Gaia DR2	42158907648		HD	2913
HR	132		GC	636		ADS	449		BD	BD+06 64
Flamsteed	51 Piscium		Flamsteed name	51 Psc		Distance	80.97		Distance ly	264.12
last precise pa	290.7		last precise sep	0.18

Period (P)	27.47y		Periastron (T)	1988.99y		Semi-major axis (a)	0.159a
Eccentricity (e)	0.811		Inclination (i)	111.3°		Longitude of periastron (ω)	14.3°
Node (Ω)	106.1°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label rho theta 2000 0.278 283.2 2001 0.281 282.3 2002 0.281 281.5 2003 0.279 280.6 2004 0.275 279.6 2005 0.268 278.7 2006 0.259 277.7 2007 0.247 276.6 2008 0.233 275.4 2009 0.216 274.0 2010 0.196 272.3 2011 0.173 270.3 2012 0.147 267.5 2013 0.116 263.4 2014 0.080 255.9 2015 0.041 234.7 2016 0.026 138.1 2017 0.018 0.9 2018 0.074 305.1 2019 0.120 297.3 2020 0.157 293.6 2021 0.186 291.2 2022 0.211 289.4 2023 0.231 288.0 2024 0.247 286.7 2025 0.259 285.6 2026 0.269 284.6 2027 0.276 283.7 2028 0.280 282.8 2029 0.281 281.9 2030 0.281 281.0 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
00324+0657	MCA 1	Aa,Ab	2004	46	281	0.3	5.84	7.99	B9.5V	NOD	003223.75+065719.6
00324+0657	MCA 1	Aa,Ab	2008	47	268	0.2	5.84	7.99	B9.5V	NOD	003223.75+065719.6
00324+0657	MCA 1	Aa,Ab	2014	58	244	0.1	5.84	7.99	B9.5V	NO	003223.75+065719.6
00324+0657	MCA 1	Aa,Ab	2019	65	295	0.1	5.84	7.99	B9.5V	NO	003223.75+065719.6

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