22280+5742 KR   60AB (DO Cep)

Coord 2000	22280+5742		Discov num	KR   60		Comp	AB		Coord arcsec 2000	22 27 59.20 +57 41 43.8
Date first	1890		Date last	2020		Obs	295
Pa first	179		Pa last	206		P.A. Now (θ)	205.6°
Sep first	2.3		Sep last	2.1		Sep. Now (ρ)	2.06"
Mag pri	9.93		Mag sec	11.41		delta mag (ΔM)	1.48		Spectral class	M3.5+M4.5 (red/red)
Pri motion ra	-806		Sec motion ra	-713
Pri motion dec	-399		Sec motion dec	-321
Notes	N O (See Notes, Orbital solution)

rPM=0.135 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	DO Cep		22 27 59 +57 41 44	KR 60 AB	2020	295	206	2.1	9.93	11.41	1.48	Y	<===
Show			22 27 59 +57 41 44	KR 60 AC	2016	83	62	139.8	9.93	10.53	0.60
Show			22 27 59 +57 41 44	KR 60 AD	2016	10	56	119.3	9.93	14.30	4.37
Show			22 27 59 +57 41 44	KR 60 AE	2016	17	77	163.0	9.93	13.33	3.40
Show			22 27 59 +57 41 44	KR 60 AF	2016	16	46	71.9	9.93	14.43	4.50
Show			22 27 59 +57 41 44	KR 60 AG	2016	6	114	68.4	9.93	15.14	5.21
Show			22 27 59 +57 41 44	KR 60 AH	2016	8	267	50.2	9.93	13.02	3.09
Show			22 27 59 +57 41 44	KR 60 AI	2016	18	119	238.2	9.93	8.31	1.62
Show			22 27 59 +57 41 44	HEL 4 AJ	2016	10	113	32.5	9.93	15.70	5.77
Show			22 27 59 +57 41 44	HZE 5 AK	2006	1	0	7.2	4.78	16.00	11.22
Show			22 27 59 +57 41 44	FYM 118 AL	2016	5	13	107.0	9.93	15.44	5.51
Show			22 27 59 +57 41 44	FYM 118 AM	2016	5	356	78.4	9.93	15.60	5.67
Show			22 27 59 +57 41 44	FYM 118 AO	2016	5	135	83.0	9.93	15.17	5.24
Show			22 27 59 +57 41 44	FYM 118 AR	2016	5	113	113.7	9.93	15.20	5.27
Show			22 27 59 +57 41 44	FYM 118 AS	2016	5	264	13.2	9.93	15.70	5.77
Show			22 27 59 +57 41 44	FYM 118 AU	2016	5	103	137.6	9.93	15.20	5.27
Show			22 27 60 +57 41 44	KR 60 BC	2016	60	62	141.2	11.41	10.53	0.88
Show			22 27 60 +57 41 44	HEL 4 BJ	2016	7	112	33.9	11.41	15.70	4.29
Show		34489	22 28 13 +57 42 44	FYM 118 CD	2016	8	272	24.5	10.53	14.30	3.77
Show		34489	22 28 13 +57 42 44	KR 60 CE	2016	19	130	45.9	10.53	13.33	2.80	Y
Show		34489	22 28 13 +57 42 44	FYM 118 CN	2016	9	52	42.1	10.53	14.92	4.39
Show		34489	22 28 13 +57 42 44	FYM 118 CP	2016	9	320	46.5	10.53	14.79	4.26
Show		34489	22 28 18 +57 42 15	FYM 118 EQ	2016	9	206	14.2	13.33	15.70	2.37

20-fold system
20 visible stars in this system

Precise pa	206.4		Precise sep	2.052		Var name	DO Cep		Constellation	Cepheus
HIP	110893		Tycho2	3991-00092-1		HD	239960		ADS	15972
GL	Gl 860A		BD	BD+56 2783		Distance	4		Distance ly	13.05
last precise pa	206.4		last precise sep	2.052

Period (P)	44.5814y	± 0.0345	Periastron (T)	1970.2342y	± 0.0389	Semi-major axis (a)	2.40113a	± 0.01042
Eccentricity (e)	0.40847	± 0.00223	Inclination (i)	165.701°	± 1.277	Longitude of periastron (ω)	207.481°	± 5.577
Node (Ω)	150.665°	± 5.42	Note			Grade	1	(1=Definitive, 9=Indet.)
Equinox			Last observation	2013

label rho theta 2000 3.039 94.6 2001 2.954 90.0 2002 2.861 85.2 2003 2.758 79.9 2004 2.647 74.3 2005 2.528 68.2 2006 2.402 61.4 2007 2.269 53.8 2008 2.132 45.3 2009 1.994 35.6 2010 1.856 24.5 2011 1.725 11.6 2012 1.605 356.7 2013 1.506 339.6 2014 1.437 320.5 2015 1.409 300.1 2016 1.431 279.6 2017 1.500 260.3 2018 1.611 243.2 2019 1.748 228.5 2020 1.900 216.1 2021 2.057 205.6 2022 2.213 196.5 2023 2.364 188.7 2024 2.505 181.7 2025 2.638 175.5 2026 2.759 169.8 2027 2.869 164.6 2028 2.968 159.8 2029 3.056 155.3 2030 3.132 151.0		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
22280+5742	KR 60	AB	2007	268	48	2.2	9.93	11.41	M3.5+M4.5	NOD	222800.42+574149.3
22280+5742	KR 60	AB	2008	270	42	2.1	9.93	11.41	M3.5+M4.5	NOD	222800.42+574149.3
22280+5742	KR 60	AB	2009	276	29	1.8	9.93	11.41	M3.5+M4.5	NOD	222800.42+574149.3
22280+5742	KR 60	AB	2010	283	17	1.6	9.93	11.41	M3.5+M4.5	NOD	222800.42+574149.3
22280+5742	KR 60	AB	2013	286	329	1.5	9.93	11.41	M3.5 M4.5	NOD	222759.20+574143.8
22280+5742	KR 60	AB	2015	289	288	1.4	9.93	11.41	M3.5+M4.5	NO	222759.20+574143.8
22280+5742	KR 60	AB	2016	291	266	1.5	9.93	11.41	M3.5+M4.5	NO	222759.20+574143.8

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