00214+6700 STT   6AB

Coord 2000	00214+6700		Discov num	STT   6		Comp	AB		Coord arcsec 2000	00 21 22.17 +67 00 19.5
Date first	1843		Date last	2014		Obs	77
Pa first	137		Pa last	153		P.A. Now (θ)	152.2°
Sep first	0.6		Sep last	0.7		Sep. Now (ρ)	0.66"
Mag pri	7.54		Mag sec	8.77		delta mag (ΔM)	1.23		Spectral class	B8.5V (blue-white)
Pri motion ra	+025		Sec motion ra	+025
Pri motion dec	+000		Sec motion dec	+000
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		11128	00 21 22 +67 00 20	STT 6 AB	2014	77	152	0.7	7.54	8.77	1.23	Y	<===
Show		11128	00 21 22 +67 00 20	STF 26 AB,C	2020	42	115	13.1	7.54	9.92	2.38

Triple system
4 visible stars in this system

Precise pa	153.4		Precise sep	0.66		Constellation	Cepheus		SAO	11128
HIP	1700		Tycho2	4027-00522-1		Gaia DR2	528650348895302144		HD	1658
ADS	293		BD	BD+66 20		Distance	165.56		Distance ly	540.06
last precise pa	153.4		last precise sep	0.66

Period (P)	335.385y		Periastron (T)	1928.76y		Semi-major axis (a)	0.3935a
Eccentricity (e)	0.9424		Inclination (i)	128.3°		Longitude of periastron (ω)	182.7°
Node (Ω)	149°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	1997

label rho theta 2000 0.587 154.1 2001 0.591 154.0 2002 0.595 153.9 2003 0.599 153.8 2004 0.603 153.7 2005 0.607 153.6 2006 0.610 153.5 2007 0.614 153.4 2008 0.618 153.3 2009 0.621 153.2 2010 0.625 153.1 2011 0.628 153.1 2012 0.632 153.0 2013 0.635 152.9 2014 0.638 152.8 2015 0.642 152.7 2016 0.645 152.6 2017 0.648 152.5 2018 0.651 152.5 2019 0.654 152.4 2020 0.657 152.3 2021 0.660 152.2 2022 0.663 152.1 2023 0.666 152.1 2024 0.669 152.0 2025 0.671 151.9 2026 0.674 151.8 2027 0.677 151.8 2028 0.679 151.7 2029 0.682 151.6 2030 0.684 151.5		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
00214+6700	STT 6	AB	2005	73	156	0.7	7.54	8.77	B8.5V	NOD	002122.17+670019.5
00214+6700	STT 6	AB	2009	74	156	0.7	7.54	8.77	B8.5V	NOD	002122.17+670019.5
00214+6700	STT 6	AB	2014	77	153	0.7	7.54	8.77	B8.5V	NO	002122.17+670019.5

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