19436-1528 BUP 197

Coord 2000	19436-1528		Discov num	BUP 197		Comp			Coord arcsec 2000	19 43 33.45 -15 28 10.8
Date first	1910		Date last	2010		Obs	7
Pa first	129		Pa last	124		P.A. Now (θ)	124°
Sep first	81.8		Sep last	58.6		Sep. Now (ρ)	58.6"
Mag pri	5.49		Mag sec	11.70		delta mag (ΔM)	6.21		Spectral class	F5IV (yellow-white)
Pri motion ra	+156		Sec motion ra
Pri motion dec	-183		Sec motion dec
Notes

Nature of this double is uncertain.

Precise pa	123.5		Precise sep	58.63		Constellation	Sagittarius		SAO	162931
HIP	97063		Tycho2	6299-02606-1		HD	186185		HR	7496
GL	Wo 9666		BD	BD-15 5444		Distance	48.92		Distance ly	159.58
last precise pa	123.5		last precise sep	58.63

Period (P)	1297d (3.55y)	± 206	Periastron (T)	48919d (1992.812y)	± 370	Semi-major axis (a)	17.3m	± 2.1
Eccentricity (e)	0.38	± 0.16	Inclination (i)	33°	± 10	Longitude of periastron (ω)	126°	± 102
Node (Ω)	222°	± 122	Note			Grade	9	(1=Definitive, 9=Indet.)
Equinox			Last observation	1991

label rho theta 2000-01-01 0.010 13.1 2001-01-01 0.018 131.2 2002-01-01 0.022 188.3 2003-01-01 0.014 253.8 2004-01-01 0.014 81.0 2005-01-01 0.020 160.0 2006-01-01 0.021 211.1 2007-01-01 0.010 348.7 2008-01-01 0.017 123.4 2009-01-01 0.022 183.3 2010-01-01 0.016 242.8 2011-01-01 0.014 68.9 2012-01-01 0.020 154.1 2013-01-01 0.021 205.6 2014-01-01 0.009 321.2 2015-01-01 0.017 115.0 2016-01-01 0.022 178.3 2017-01-01 0.017 233.8 2018-01-01 0.013 55.5 2019-01-01 0.019 147.9 2020-01-01 0.022 200.4 2021-01-01 0.010 295.3 2022-01-01 0.016 105.9 2023-01-01 0.021 173.1 2024-01-01 0.018 226.2 2025-01-01 0.012 40.0 2026-01-01 0.019 141.2 2027-01-01 0.022 195.3 2028-01-01 0.012 274.6 2029-01-01 0.015 96.1 2030-01-01 0.021 167.8 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
19436-1528	BUP 197		1960	2	127	70.4	5.49	11.70	F5IV		194333.45-152810.8
19436-1528	BUP 197		1985	3	125	64.5	5.49	11.70	F5IV		194333.45-152810.8
19436-1528	BUP 197		2000	6	125	61.2	5.49	11.70	F5IV		194333.45-152810.8
19436-1528	BUP 197		2010	7	124	58.6	5.49	11.70	F5IV		194333.45-152810.8

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