00048+3810 BU  862

Coord 2000	00048+3810		Discov num	BU  862		Comp			Coord arcsec 2000	00 04 46.86 +38 10 25.2
Date first	1881		Date last	2019		Obs	77
Pa first	105		Pa last	30		P.A. Now (θ)	30.2°
Sep first	0.5		Sep last	0.8		Sep. Now (ρ)	0.88"
Mag pri	10.02		Mag sec	10.18		delta mag (ΔM)	0.16		Spectral class	G5 (yellow)
Pri motion ra	+029		Sec motion ra	+029
Pri motion dec	-060		Sec motion dec	-060
Notes	O (Orbital solution)

This double is physical.

Precise pa	30		Precise sep	0.81		Constellation	Andromeda		SAO	53619
HIP	385		Tycho2	2781-00488-1		Gaia DR2	95125631488		ADS	34
BD	BD+37 4930		Distance	92.51		Distance ly	301.77		last precise pa	30
last precise sep	0.81

Period (P)	403y		Periastron (T)	1942y		Semi-major axis (a)	0.74a
Eccentricity (e)	0.68		Inclination (i)	40°		Longitude of periastron (ω)	198.8°
Node (Ω)	43°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	1984

label rho theta 2000 0.712 21.0 2001 0.721 21.5 2002 0.730 22.1 2003 0.739 22.6 2004 0.747 23.1 2005 0.756 23.6 2006 0.764 24.0 2007 0.772 24.5 2008 0.780 25.0 2009 0.788 25.4 2010 0.796 25.8 2011 0.804 26.3 2012 0.812 26.7 2013 0.820 27.1 2014 0.827 27.5 2015 0.835 27.9 2016 0.842 28.3 2017 0.849 28.7 2018 0.857 29.1 2019 0.864 29.4 2020 0.871 29.8 2021 0.878 30.2 2022 0.885 30.5 2023 0.891 30.9 2024 0.898 31.2 2025 0.905 31.5 2026 0.911 31.9 2027 0.918 32.2 2028 0.924 32.5 2029 0.930 32.8 2030 0.936 33.2 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
00048+3810	BU 862		2007	68	25	0.8	10.02	10.18	G5	NOD	000446.86+381025.2
00048+3810	BU 862		2009	70	24	0.8	10.02	10.18	G5	NOD	000446.86+381025.2
00048+3810	BU 862		2016	71	28	0.9	10.02	10.18	G5	O	000446.86+381025.2

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