00424+0410 STT  18AB

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	2017		Obs	177
Pa first	91		Pa last	211		P.A. Now (θ)	211.5°
Sep first	1.0		Sep last	2.1		Sep. Now (ρ)	2.1"
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.

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name

SAO

coord

wds_name

last

obs

pa

sep

mag1

mag2

d_mag

orb

current

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00 42 23 +04 10 00

STT 18 AB

2017

177

212

2.1

7.86

9.71

1.85

Y

<===

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00 42 23 +04 10 00

A 3107 AC

2015

13

275

46.9

7.86

13.45

5.59

Triple system
3 visible stars in this system

Precise pa	211.4		Precise sep	2.065		Constellation	Pisces		HIP	3326
Tycho2	0014-00641-1		Gaia DR2	2551241944269355776		HD	3972		ADS	588
BD	BD+03 93		Distance	59.99		Distance ly	195.69		last precise pa	211.4
last precise sep	2.065

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

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
00424+0410	STT 18	AB	2017	174	211	2.1	7.86	9.71	F8V	NO	004223.21+041000.0

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