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)	40.4°
Sep first	0.2	Sep last	0.2	Sep. Now (ρ)	0.1"
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)

Visually invisible, K-band or other infrared star This double is physical.

01345+7804 SYSTEM COMPONENTS

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

sep

mag1

mag2

d_mag

orb

current

Show

01345+7804

HDS 211

Aa,Ab

1991

2011

0.1

11.02

12.76

1.74

<===

Show

01345+7804

TOK 227

1980

2015

350

61.9

10.64

13.28

2.64

Triple system
2 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	211	Precise sep	0.223	Constellation	Cepheus	HIP	7338
Tycho2	4498-01104-3	Gaia DR2	8277635456	Distance	37.71	Distance ly	123.01
last precise pa	211	last precise sep	0.223

ORBITAL ELEMENTS

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

WDS HISTORIC DATA

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

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