00206+1219 BU 1015

Coord 2000	00206+1219		Discov num	BU 1015		Comp			Coord arcsec 2000	00 20 38.21 +12 18 39.8
Date first	1888		Date last	2017		Obs	101
Pa first	115		Pa last	110		P.A. Now (θ)	111.1°
Sep first	0.6		Sep last	0.5		Sep. Now (ρ)	0.51"
Mag pri	8.39		Mag sec	9.67		delta mag (ΔM)	1.28		Spectral class	F5 (yellow-white)
Pri motion ra	-027		Sec motion ra	-027
Pri motion dec	+007		Sec motion dec	+007
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	109.8		Precise sep	0.51		Constellation	Pisces		SAO	91856
HIP	1646		Tycho2	0599-00185-1		Gaia DR2	95931879040		HD	1634
ADS	281		BD	BD+11 41		Distance	107.41		Distance ly	350.37
last precise pa	109.8		last precise sep	0.51

Period (P)	137y		Periastron (T)	1961.65y		Semi-major axis (a)	0.333a
Eccentricity (e)	0.557		Inclination (i)	35°		Longitude of periastron (ω)	10°
Node (Ω)	291.2°		Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2008

label rho theta 2000 0.434 94.5 2001 0.440 95.5 2002 0.446 96.5 2003 0.452 97.5 2004 0.457 98.5 2005 0.462 99.4 2006 0.467 100.3 2007 0.471 101.2 2008 0.475 102.1 2009 0.480 103.0 2010 0.483 103.8 2011 0.487 104.7 2012 0.491 105.5 2013 0.494 106.3 2014 0.497 107.1 2015 0.499 107.9 2016 0.502 108.7 2017 0.504 109.5 2018 0.507 110.3 2019 0.508 111.1 2020 0.510 111.8 2021 0.512 112.6 2022 0.513 113.3 2023 0.514 114.1 2024 0.515 114.8 2025 0.516 115.6 2026 0.516 116.3 2027 0.516 117.1 2028 0.516 117.8 2029 0.516 118.6 2030 0.516 119.3 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
00206+1219	BU 1015		2007	94	101	0.5	8.39	9.67	F5	NOD	002038.21+121839.8
00206+1219	BU 1015		2008	99	104	0.5	8.39	9.67	F5	NOD	002038.21+121839.8
00206+1219	BU 1015		2017	101	110	0.5	8.39	9.67	F5	NO	002038.21+121839.8

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