00274+3054 HDS  62

Coord 2000	00274+3054		Discov num	HDS  62		Comp			Coord arcsec 2000	00 27 23.42 +30 53 36.1
Date first	1991		Date last	2011		Obs	3
Pa first	67		Pa last	75		P.A. Now (θ)	75°
Sep first	0.3		Sep last	0.3		Sep. Now (ρ)	0.3"
Mag pri	8.55		Mag sec	10.46		delta mag (ΔM)	1.91		Spectral class	K1III... (yellow-orange)
Pri motion ra	-002		Sec motion ra
Pri motion dec	-010		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	74.7		Precise sep	0.3		Constellation	Andromeda		SAO	53907
HIP	2170		Tycho2	2262-00040-1		Gaia DR2	89960371840		HD	2343
BD	BD+30 60		Distance	460.83		Distance ly	1503.23		last precise pa	74.7
last precise sep	0.3

Period (P)	936d (2.56y)		Periastron (T)	42531.9d (1975.324y)		Semi-major axis (a)	4.1m	± 1
Eccentricity (e)	0		Inclination (i)	48.9°	± 11.6	Longitude of periastron (ω)	0°
Node (Ω)	293.2°	± 9.9	Note			Grade	9	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000-01-01 0.003 147.8 2001-01-01 0.004 297.8 2002-01-01 0.004 90.4 2003-01-01 0.003 229.3 2004-01-01 0.003 352.1 2005-01-01 0.004 133.1 2006-01-01 0.004 286.1 2007-01-01 0.003 74.9 2008-01-01 0.003 203.6 2009-01-01 0.003 332.0 2010-01-01 0.004 120.6 2011-01-01 0.004 273.7 2012-01-01 0.003 55.0 2013-01-01 0.003 177.8 2014-01-01 0.004 316.4 2015-01-01 0.004 109.0 2016-01-01 0.003 259.0 2017-01-01 0.003 30.1 2018-01-01 0.003 156.4 2019-01-01 0.004 303.5 2020-01-01 0.004 96.9 2021-01-01 0.003 240.3 2022-01-01 0.003 3.8 2023-01-01 0.004 139.9 2024-01-01 0.004 291.8 2025-01-01 0.004 82.9 2026-01-01 0.003 216.5 2027-01-01 0.003 341.1 2028-01-01 0.004 126.5 2029-01-01 0.004 279.9 2030-01-01 0.003 65.4 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
00274+3054	HDS 62		1991	1	67	0.3	8.55	10.46	K1III...		002723.42+305336.1
00274+3054	HDS 62		2007	2	72	0.3	8.55	10.46	K1III...		002723.42+305336.1
00274+3054	HDS 62		2011	3	75	0.3	8.55	10.46	K1III...	NO	002723.42+305336.1

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