01345+7804 HDS 211Aa,Ab

Coord 2000	01345+7804		Discov num	HDS 211		Comp	Aa,Ab		Coord arcsec 2000	01 34 30.53 +78 03 46.6
Date first	1991		Date last	2011		Obs	13
Pa first	188		Pa last	211		P.A. Now (θ)	124.4°
Sep first	0.2		Sep last	0.2		Sep. Now (ρ)	0.12"
Mag pri	11.02		Mag sec	12.76		delta mag (ΔM)	1.74		Spectral class	M0 (red)
Pri motion ra	-066		Sec motion ra
Pri motion dec	+104		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

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name

SAO

coord_2000

discov#

comp

first

last

obs

pa

sep

mag1

mag2

d_mag

orb

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01345+7804

HDS 211

Aa,Ab

1991

2011

13

124

0.1

11.02

12.76

1.74

Y

<===

Show

01345+7804

TOK 227

AB

1980

2003

3

350

62.0

10.64

13.28

2.64

Triple system
2 visible stars in this system

Precise pa	211		Precise sep	0.223		Constellation	Cepheus		HIP	7338
Tycho2	4498-01104-3		Distance	37.71		Distance ly	123.01		last precise pa	211
last precise sep	0.223

Period (P)	22.74y		Periastron (T)	1996.99y		Semi-major axis (a)	0.207a
Eccentricity (e)	0.462		Inclination (i)	127.7°		Longitude of periastron (ω)	28.5°
Node (Ω)	68.8°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2006

label rho theta 2000 0.142 285.1 2001 0.186 271.2 2002 0.222 262.3 2003 0.249 255.7 2004 0.270 250.3 2005 0.282 245.5 2006 0.289 241.0 2007 0.289 236.6 2008 0.283 232.1 2009 0.273 227.4 2010 0.258 222.1 2011 0.238 216.2 2012 0.216 209.0 2013 0.190 200.1 2014 0.164 188.3 2015 0.140 172.2 2016 0.123 150.5 2017 0.117 124.4 2018 0.120 97.9 2019 0.117 72.2 2020 0.096 40.4 2021 0.080 348.4 2022 0.108 302.8 2023 0.154 280.7 2024 0.196 268.6 2025 0.230 260.5 2026 0.255 254.2 2027 0.274 249.0 2028 0.285 244.3 2029 0.289 239.8 2030 0.288 235.4 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
01345+7804	HDS 211	Aa,Ab	2009	8	224	0.3	11.02	12.76	M0	OD	013430.53+780346.6
01345+7804	HDS 211	Aa,Ab	2011	13	211	0.2	11.02	12.76	M0	O	013430.53+780346.6

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