00057+4549 STT 547AF

Coord 2000	00057+4549		Discov num	STT 547		Comp	AF		Coord arcsec 2000	00 05 41.03 +45 48 43.3
Date first	1897		Date last	2015		Obs	38
Pa first	254		Pa last	254		P.A. Now (θ)	254°
Sep first	327.6		Sep last	328.4		Sep. Now (ρ)	328.4"
Mag pri	8.98		Mag sec	10.19		delta mag (ΔM)	1.21		Spectral class	K6V+M2e (yellow-orange/red)
Pri motion ra	+879		Sec motion ra	+870
Pri motion dec	-154		Sec motion dec	-151
Notes	N O V (See Notes, Orbital solution, Proper motion indicates physical)

rPM=0.791 This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			00057+4549	STT 547	AB	1876	2017	415	190	5.9	8.98	9.15	0.17	Y
Show			00057+4549	STT 547	AC	1911	2016	26	263	117.2	8.98	13.71	4.73
Show			00057+4549	STT 547	AD	1911	2016	33	231	110.9	8.98	12.51	3.53
Show			00057+4549	STT 547	AE	1911	2016	42	343	58.9	8.98	11.75	2.77
Show			00057+4549	STT 547	AF	1897	2015	38	254	328.4	8.98	10.19	1.21	Y	<===
Show			00057+4549	POP 217	AP	1994	2016	34	318	16.0	8.98	13.40	4.42
Show			00057+4549	POP 217	AQ	1998	2006	7	130	20.0	8.98	16.00	7.02
Show			00057+4549	POP 217	AX	2004	2006	2	222	12.0	8.98
Show			00057+4549	POP 217	AY	1998	2016	8	78	190.1	8.98	14.80	5.82
Show			00057+4549	STT 547	BC	1925	2016	9	266	115.7	9.15	13.71	4.56
Show			00057+4549	STT 547	BD	1921	2016	10	233	106.4	9.15	12.51	3.36
Show			00057+4549	STT 547	BE	1991	2016	16	346	64.4	9.15	11.75	2.60
Show			00057+4549	STT 547	BF	1961	2002	34	255	326.4	9.15	10.19	1.04
Show			00057+4549	STT 547	BP	1989	2016	9	331	20.3	9.15	13.10	3.95
Show			00057+4549	PAL 2	Ca,Cb	1998	2016	17	91	6.1	13.71	14.90	1.19
Show			00057+4549	POP 217	YG	1998	2016	8	188	9.7	14.80	15.80	1.00

12-fold system
11 visible stars in this system

Spectr	A1III		Constellation	Cassiopeia		SAO	10954		HIP	330
Tycho2	4018-03891-1		HD	225180		HR	9100		GC	30
Dm number	+61 2585		BD	BD+61 2586		Flamsteed	9 Cassiopeiae		Flamsteed name	9 Cas
Distance	1190.48		Distance ly	3883.35		last precise pa	253.7		last precise sep	328.407

Period (P)	830.37c		Periastron (T)	26357y		Semi-major axis (a)	205.1a
Eccentricity (e)	0.81		Inclination (i)	75.9°		Longitude of periastron (ω)	345.6°
Node (Ω)	74.3°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation

label rho theta 2000 326.909 254.3 2001 326.903 254.3 2002 326.898 254.3 2003 326.893 254.3 2004 326.887 254.3 2005 326.882 254.3 2006 326.877 254.3 2007 326.871 254.3 2008 326.866 254.3 2009 326.860 254.3 2010 326.855 254.3 2011 326.850 254.3 2012 326.844 254.3 2013 326.839 254.3 2014 326.834 254.3 2015 326.828 254.3 2016 326.823 254.3 2017 326.817 254.3 2018 326.812 254.3 2019 326.807 254.3 2020 326.801 254.3 2021 326.796 254.3 2022 326.790 254.3 2023 326.785 254.3 2024 326.780 254.3 2025 326.774 254.3 2026 326.769 254.3 2027 326.764 254.3 2028 326.758 254.3 2029 326.753 254.3 2030 326.747 254.3 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
00057+4549	STT 547	AF	2007	36	254	327.9	9.59	10.19	K6	N DV	000541.03+454843.3
00057+4549	STT 547	AF	2015	38	254	328.4	8.98	10.19	K6V+M2e	NO V	000541.03+454843.3

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