20158+5230 WAL 130AD

Coord 2000	20158+5230		Discov num	WAL 130		Comp	AD		Coord arcsec 2000	20 15 49.33 +52 30 08.2
Date first	1944		Date last	2015		Obs	6
Pa first	240		Pa last	227		P.A. Now (θ)	227°
Sep first	25.0		Sep last	25.9		Sep. Now (ρ)	25.9"
Mag pri	7.59		Mag sec	12.31		delta mag (ΔM)	4.72		Spectral class	K5III (yellow-orange)
Pri motion ra	+005		Sec motion ra	-004
Pri motion dec	-005		Sec motion dec	-008
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.061 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		32404	20158+5230	STT 404	AB	1843	2015	20	115	28.5	7.59	9.80	2.21
Show		32404	20158+5230	WAL 130	AC	1897	2015	9	2	78.9	7.59	11.08	3.49
Show		32404	20158+5230	WAL 130	AD	1944	2015	6	227	25.9	7.59	12.31	4.72		<===

Quadruple system
4 visible stars in this system

Precise pa	227.4		Precise sep	25.868		Constellation	Cygnus		SAO	32404
HIP	99875		Tycho2	3937-01802-1		Gaia DR2	27287030784		HD	193054
BD	BD+52 2666		Distance	228.83		Distance ly	746.44

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20158+5230	WAL 130	AD	2000	2	228	25.8	7.59	12.31	K5III	D	201549.33+523008.2
20158+5230	WAL 130	AD	2003	3	228	25.6	7.59	12.31	K5III	N D	201549.33+523008.2
20158+5230	WAL 130	AD	2012	4	228	25.9	7.59	12.31	K5III	N D	201549.33+523008.2
20158+5230	WAL 130	AD	2015	5	227	25.9	7.59	12.31	K5III	N	201549.33+523008.2

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