00167+3629 STT   4

Coord 2000	00167+3629		Discov num	STT   4		Comp			Coord arcsec 2000	00 16 44.54 +36 29 29.4
Date first	1845		Date last	2007		Obs	155
Pa first	201		Pa last	103		P.A. Now (θ)	358.3°
Sep first	0.5		Sep last	0.3		Sep. Now (ρ)	0.16"
Mag pri	7.94		Mag sec	9.88		delta mag (ΔM)	1.94		Spectral class	G0 (yellow)
Pri motion ra	+093		Sec motion ra	+093
Pri motion dec	+053		Sec motion dec	+053
Notes	N O (See Notes, Orbital solution)

This double is physical.

Constellation	Andromeda		SAO	53773		HIP	1336		Tycho2	2272-01489-1
HD	1224		ADS	221		BD	BD+35 34		Distance	78
Distance ly	254.44		last precise pa	102.7		last precise sep	0.25

Period (P)	108.9y		Periastron (T)	1907.9y		Semi-major axis (a)	0.35a
Eccentricity (e)	0.56		Inclination (i)	162.5°		Longitude of periastron (ω)	356.3°
Node (Ω)	10.8°		Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation	1999

label rho theta 2000 0.331 137.8 2001 0.319 134.8 2002 0.307 131.5 2003 0.294 128.0 2004 0.281 124.1 2005 0.268 119.9 2006 0.255 115.2 2007 0.241 110.0 2008 0.228 104.2 2009 0.215 97.7 2010 0.203 90.3 2011 0.191 82.0 2012 0.180 72.7 2013 0.171 62.3 2014 0.163 50.7 2015 0.158 38.3 2016 0.155 25.1 2017 0.154 11.6 2018 0.156 358.3 2019 0.160 345.5 2020 0.167 333.5 2021 0.175 322.5 2022 0.185 312.7 2023 0.196 303.8 2024 0.208 296.0 2025 0.220 289.0 2026 0.233 282.8 2027 0.246 277.2 2028 0.259 272.2 2029 0.272 267.7 2030 0.285 263.5 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
00167+3629	STT 4		2007	154	103	0.3	7.94	9.88	G0	NOD	001644.54+362929.4

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