01083+5455 WCK   1Aa,Ab

Coord 2000	01083+5455		Discov num	WCK   1		Comp	Aa,Ab		Coord arcsec 2000	01 08 16.36 +54 55 12.7
Date first	1973		Date last	2014		Obs	18
Pa first	24		Pa last	38		P.A. Now (θ)	346.9°
Sep first	0.4		Sep last	1.1		Sep. Now (ρ)	0.19"
Mag pri	5.30		Mag sec	10.70		delta mag (ΔM)	5.4		Spectral class	G5Vp (yellow)
Pri motion ra	+342		Sec motion ra
Pri motion dec	-160		Sec motion dec
Notes	N O P (See Notes, Orbital solution, 100-year proper motion)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		22024	01083+5455	WCK 1	Aa,Ab	1973	2014	18	347	0.2	5.30	10.70	5.40	Y	<===
Show	Marfak	22024	01083+5455	STT 551	AB	1832	2016	15	273	490.8	5.23	11.31	6.08
Show		22024	01083+5455	BUP 14	AC	1907	1999	4	263	198.1	5.23	12.02	6.79
Show		22024	01083+5455	BUP 14	AE	1907	1999	3	286	273.1	5.23	12.30	7.07
Show		22024	01083+5455	STT 551	AF	1832	1999	4	298	589.0	5.23	13.00	7.77
Show			01083+5455	BUP 14	CD	1907	2002	3	115	4.3	12.02	12.80	0.78

Septuple system
6 visible stars in this system

Constellation	Cassiopeia		SAO	22024		HIP	5336		Tycho2	3673-01929-1
HD	6582		HR	321		GC	1360		GL	Gl 53A
Bayer	Mu Cassiopeiae		Bayer name	Mu Cas		Flamsteed	30 Cassiopeiae		Flamsteed name	30 Cas
Distance	7.55		Distance ly	24.63		last precise pa	38.3		last precise sep	1.071

Period (P)	21.753y	± 0.069	Periastron (T)	1975.738y	± 0.145	Semi-major axis (a)	1.009a	± 0.016
Eccentricity (e)	0.561	± 0.017	Inclination (i)	106.8°	± 0.9	Longitude of periastron (ω)	152.7°	± 3.1
Node (Ω)	47.3°	± 1	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1994

label rho theta 2000 0.275 167.2 2001 0.315 114.3 2002 0.491 87.6 2003 0.689 75.7 2004 0.876 69.0 2005 1.042 64.6 2006 1.184 61.4 2007 1.301 58.8 2008 1.390 56.5 2009 1.450 54.5 2010 1.480 52.7 2011 1.477 50.8 2012 1.439 48.9 2013 1.361 46.9 2014 1.239 44.5 2015 1.066 41.5 2016 0.832 37.0 2017 0.529 28.0 2018 0.193 346.9 2019 0.334 243.1 2020 0.473 220.7 2021 0.365 198.4 2022 0.264 153.4 2023 0.352 105.3 2024 0.540 83.8 2025 0.737 73.7 2026 0.919 67.8 2027 1.079 63.7 2028 1.215 60.7 2029 1.325 58.2 2030 1.407 56.0 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
01083+5455	WCK 1	Aa,Ab	2004	14	65	1.0	5.30	10.70	G5Vp	NODP	010816.36+545512.7
01083+5455	WCK 1	Aa,Ab	2011	15	48	1.4	5.30	10.70	G5Vp	NO P	010816.36+545512.7
01083+5455	WCK 1	Aa,Ab	2014	17	38	1.1	5.30	10.70	G5Vp	NO P	010816.36+545512.7

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