18472-0445 NOI   5 (Bet Sct)

Coord 2000	18472-0445		Discov num	NOI   5		Comp			Coord arcsec 2000	18 47 10.47 -04 44 52.3
Date first	2004		Date last	2004		Obs	8
Pa first	162		Pa last	162		P.A. Now (θ)	162°
Sep first	0.0		Sep last	0.0		Sep. Now (ρ)	0"
Mag pri	4.22		Mag sec			delta mag (ΔM)			Spectral class	G4IIa+B9V (yellow/blue-white)
Pri motion ra	-008		Sec motion ra
Pri motion dec	-016		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	162.3		Precise sep	0.017		Name	Bet Sct		Constellation	Scutum
SAO	142618		HIP	92175		Tycho2	5122-01426-1		Gaia DR2	4255143126619174528
HD	173764		HR	7063		GC	25730		BD	BD-04 4582
Bayer	Beta Scuti		Bayer name	Bet Sct		Distance	280.9		Distance ly	916.3
last precise pa	162.3		last precise sep	0.017

Period (P)	834d (2.28y)		Periastron (T)	22480.9d (1920.426y)		Semi-major axis (a)	2.8m	± 0.2
Eccentricity (e)	0.35		Inclination (i)	105.9°	± 4.2	Longitude of periastron (ω)	33.9°
Node (Ω)	288.1°	± 2.8	Note			Grade	9	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000-01-01 0.001 314.0 2001-01-01 0.003 110.7 2002-01-01 0.001 51.0 2003-01-01 0.002 124.6 2004-01-01 0.002 88.2 2005-01-01 0.001 259.0 2006-01-01 0.003 99.3 2007-01-01 0.002 296.3 2008-01-01 0.004 106.6 2009-01-01 0.001 350.0 2010-01-01 0.003 115.4 2011-01-01 0.002 76.1 2012-01-01 0.001 151.9 2013-01-01 0.003 94.4 2014-01-01 0.002 283.0 2015-01-01 0.004 102.9 2016-01-01 0.001 311.4 2017-01-01 0.003 110.2 2018-01-01 0.001 46.0 2019-01-01 0.002 123.1 2020-01-01 0.002 87.3 2021-01-01 0.001 252.6 2022-01-01 0.003 98.8 2023-01-01 0.002 294.9 2024-01-01 0.004 106.2 2025-01-01 0.001 343.8 2026-01-01 0.003 114.7 2027-01-01 0.002 74.1 2028-01-01 0.001 145.6 2029-01-01 0.003 93.8 2030-01-01 0.002 281.3 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
18472-0445	NOI 5		2004	8	162	0.0	4.22		G4IIa+B9V	NO	184710.47-044452.3

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