Coord 2000	00424+0410	Discov num	STT 18	Comp	AB	Coord arcsec 2000	00 42 23.21 +04 10 00.0
Date first	1843	Date last	2014	Obs	173
Pa first	91	Pa last	210	P.A. Now (θ)	210.5°
Sep first	1.0	Sep last	2.1	Sep. Now (ρ)	2.07"
Mag pri	7.86	Mag sec	9.71	delta mag (ΔM)	1.85	Spectral class	F8V (yellow-white)
Pri motion ra	+027	Sec motion ra	+027
Pri motion dec	-038	Sec motion dec	-038
Notes	N O (See Notes, Orbital solution)

This double is physical.

00424+0410 SYSTEM COMPONENTS

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

sep

mag1

mag2

d_mag

orb

current

Show

00424+0410

STT 18

1843

2014

173

210

2.1

7.86

9.71

1.85

<===

Show

00424+0410

A 3107

1896

2011

275

46.6

7.86

13.45

5.59

Triple system
3 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	210.2	Precise sep	2.05	Cdsa2 id	STT 18 AB	Constellation	Pisces
HIP	3326	Tycho2	0014-00641-1	HD	3972	ADS	588
BD	BD+03 93	Ra deg	0.7064472222222222	De deg	4.166666666666667	Distance	59.99
Distance ly	195.69	last precise pa	210.2	last precise sep	2.05

ORBITAL ELEMENTS

Period (P)	386.51y	Periastron (T)	1828.13y	Semi-major axis (a)	3.296a
Eccentricity (e)	0.834	Inclination (i)	75.3°	Longitude of periastron (ω)	284.3°
Node (Ω)	76.5°	Note		Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000	Last observation	1999

label	rho	theta
2000	1.882	204.0
2001	1.893	204.4
2002	1.903	204.8
2003	1.914	205.2
2004	1.924	205.6
2005	1.935	205.9
2006	1.945	206.3
2007	1.956	206.7
2008	1.967	207.1
2009	1.977	207.4
2010	1.988	207.8
2011	1.998	208.1
2012	2.009	208.5
2013	2.019	208.8
2014	2.030	209.2
2015	2.040	209.5
2016	2.051	209.9
2017	2.061	210.2
2018	2.072	210.5
2019	2.082	210.9
2020	2.092	211.2
2021	2.103	211.5
2022	2.113	211.8
2023	2.124	212.1
2024	2.134	212.5
2025	2.144	212.8
2026	2.154	213.1
2027	2.165	213.4
2028	2.175	213.7
2029	2.185	214.0
2030	2.195	214.3

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
00424+0410	STT 18	AB	2004	162	206	1.9	7.86	9.71	F8V	NOD	004223.21+041000.0
00424+0410	STT 18	AB	2008	165	209	2.0	7.86	9.71	F8V	NOD	004223.21+041000.0
00424+0410	STT 18	AB	2009	166	207	2.0	7.86	9.71	F8V	NOD	004223.21+041000.0
00424+0410	STT 18	AB	2010	168	209	1.9	7.86	9.71	F8V	NOD	004223.21+041000.0
00424+0410	STT 18	AB	2011	171	209	2.0	7.86	9.71	F8V	NOD	004223.21+041000.0
00424+0410	STT 18	AB	2014	171	210	2.1	7.86	9.71	F8V	NO	004223.21+041000.0

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