00008+1659 BAG  18

Coord 2000	00008+1659		Discov num	BAG  18		Comp			Coord arcsec 2000	00 00 48.09 +16 59 17.5
Date first	2001		Date last	2019		Obs	9
Pa first	37		Pa last	334		P.A. Now (θ)	332.6°
Sep first	0.5		Sep last	0.7		Sep. Now (ρ)	0.72"
Mag pri	8.79		Mag sec	12.60		delta mag (ΔM)	3.81		Spectral class	K0 (yellow-orange)
Pri motion ra	-100		Sec motion ra
Pri motion dec	-316		Sec motion dec
Notes	O (Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	333.9		Precise sep	0.72		Constellation	Pegasus		SAO	108960
HIP	68		Tycho2	1178-01142-1		HD	224808		BD	BD+16 5027
Distance	31.59		Distance ly	103.05		last precise pa	333.9		last precise sep	0.72

Period (P)	66.62y		Periastron (T)	1990.25y		Semi-major axis (a)	0.531a
Eccentricity (e)	0.372		Inclination (i)	192.3°		Longitude of periastron (ω)	358.9°
Node (Ω)	142.2°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation	2018

label rho theta 2000 0.463 48.0 2001 0.482 41.8 2002 0.502 36.1 2003 0.521 30.8 2004 0.540 25.9 2005 0.558 21.3 2006 0.575 17.0 2007 0.592 13.0 2008 0.607 9.1 2009 0.622 5.5 2010 0.636 2.0 2011 0.649 358.6 2012 0.661 355.4 2013 0.672 352.3 2014 0.682 349.3 2015 0.692 346.4 2016 0.700 343.5 2017 0.707 340.7 2018 0.713 338.0 2019 0.718 335.3 2020 0.722 332.6 2021 0.725 330.0 2022 0.727 327.3 2023 0.728 324.7 2024 0.728 322.1 2025 0.728 319.5 2026 0.726 316.9 2027 0.723 314.3 2028 0.719 311.6 2029 0.714 308.9 2030 0.708 306.2 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
00008+1659	BAG 18		2001	1	37	0.5	8.79	12.60		D	000048.09+165917.5
00008+1659	BAG 18		2008	3	187	0.6	8.79	12.60		D	000048.09+165917.5
00008+1659	BAG 18		2010	5	1	0.6	8.79	12.60	K0	D	000048.09+165917.5
00008+1659	BAG 18		2015	6	344	0.7	8.79	12.60	K0		000048.09+165917.5
00008+1659	BAG 18		2018	8	336	0.7	8.79	12.60	K0		000048.09+165917.5
00008+1659	BAG 18		2019	9	334	0.7	8.79	12.60	K0	O	000048.09+165917.5

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