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	2016		Obs	24
Pa first	24		Pa last	28		P.A. Now (θ)	190.8°
Sep first	0.4		Sep last	0.8		Sep. Now (ρ)	0.38"
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)

Visually invisible, K-band or other infrared star 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	2016	24	191	0.4	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	2015	4	115	4.3	12.02	12.80	0.78

Septuple system
6 visible stars in this system

Precise pa	27.7		Precise sep	0.759		Constellation	Cassiopeia		SAO	22024
HIP	5336		Tycho2	3673-01929-1		HD	6582		HR	321
GC	1360		GL	Gl 53A		BD	BD+54 223		Bayer	Mu Cassiopeiae
Bayer name	Mu Cas		Flamsteed	30 Cassiopeiae		Flamsteed name	30 Cas		Distance	7.55
Distance ly	24.63		last precise pa	27.7		last precise sep	0.759

Period (P)	21.479y	± 0.032	Periastron (T)	1975.5514y	± 0.0805	Semi-major axis (a)	989.8m	± 5.4
Eccentricity (e)	0.6251	± 0.0099	Inclination (i)	111.4°	± 0.27	Longitude of periastron (ω)	144.93°	± 1.63
Node (Ω)	41.28°	± 0.63	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	2016

label rho theta 2000 0.343 131.3 2001 0.462 100.7 2002 0.625 84.4 2003 0.792 75.0 2004 0.947 68.8 2005 1.085 64.2 2006 1.203 60.7 2007 1.300 57.7 2008 1.374 55.1 2009 1.422 52.7 2010 1.444 50.4 2011 1.436 48.2 2012 1.396 45.8 2013 1.317 43.3 2014 1.194 40.4 2015 1.016 36.5 2016 0.769 30.6 2017 0.435 17.0 2018 0.169 283.1 2019 0.410 218.6 2020 0.382 190.8 2021 0.326 151.6 2022 0.395 113.1 2023 0.545 91.0 2024 0.713 79.0 2025 0.874 71.5 2026 1.021 66.3 2027 1.149 62.3 2028 1.257 59.1 2029 1.342 56.3 2030 1.402 53.8 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
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
01083+5455	WCK 1	Aa,Ab	2016	24	28	0.8	5.30	10.70	G5Vp	NO P	010816.36+545512.7

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