00321+6715 MCY   1Aa,Ab

Coord 2000	00321+6715		Discov num	MCY   1		Comp	Aa,Ab		Coord arcsec 2000	00 32 29.43 +67 14 08.8
Date first	1989		Date last	2014		Obs	32
Pa first	43		Pa last	222		P.A. Now (θ)	160.9°
Sep first	0.5		Sep last	0.4		Sep. Now (ρ)	0.43"
Mag pri	10.80		Mag sec	12.50		delta mag (ΔM)	1.7		Spectral class	dM2.5e
Pri motion ra	+172		Sec motion ra
Pri motion dec	-024		Sec motion dec
Notes	N O P (See Notes, Orbital solution, 100-year proper motion)

This double is physical.

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name

SAO

coord_2000

discov#

comp

first

last

obs

pa

sep

mag1

mag2

d_mag

orb

current

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00321+6715

MCY 1

Aa,Ab

1989

2014

32

161

0.4

10.80

12.50

1.70

Y

<===

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V547 Cas

00321+6715

VYS 2

AB

1923

2015

90

185

3.7

10.62

12.20

1.58

Y

Triple system
2 visible stars in this system

Precise pa	222.2		Precise sep	0.369		Var name	V547 Cas		Constellation	Cassiopeia
HIP	2552		Tycho2	4027-00803-1		ADS	440		GL	Gl 22A
Distance	10.07		Distance ly	32.85		last precise pa	222.2		last precise sep	0.369

Period (P)	5694.2d (15.59y)	± 14.9	Periastron (T)	51817.2d (2000.747y)	± 5	Semi-major axis (a)	0.5106a	± 0.0007
Eccentricity (e)	0.163	± 0.002	Inclination (i)	43.7°	± 0.2	Longitude of periastron (ω)	284.5°	± 0.5
Node (Ω)	178.3°	± 0.2	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000 0.317 75.1 2001 0.330 118.4 2002 0.404 150.9 2003 0.468 173.3 2004 0.490 191.8 2005 0.479 209.9 2006 0.451 229.8 2007 0.429 252.1 2008 0.430 275.7 2009 0.456 297.8 2010 0.493 316.9 2011 0.524 333.4 2012 0.531 348.7 2013 0.503 4.6 2014 0.436 24.0 2015 0.351 52.1 2016 0.310 93.2 2017 0.358 133.4 2018 0.434 160.9 2019 0.482 181.1 2020 0.489 199.1 2021 0.468 217.8 2022 0.440 238.7 2023 0.426 261.8 2024 0.438 285.0 2025 0.471 306.0 2026 0.508 323.9 2027 0.530 339.8 2028 0.524 355.0 2029 0.479 11.9 2030 0.401 34.0 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
00321+6715	MCY 1	Aa,Ab	2005	16	46	0.5	10.30		dM2.5e	NO P	003229.43+671408.8
00321+6715	MCY 1	Aa,Ab	2008	18	33	0.2	10.30		dM2.5e	NO P	003229.43+671408.8
00321+6715	MCY 1	Aa,Ab	2014	21	222	0.4	6.20	8.20	dM2.5e	NOPK	003229.43+671408.8

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