19579+3843 SEI 751AB

Coord 2000	19579+3843		Discov num	SEI 751		Comp	AB		Coord arcsec 2000	19 57 49.54 +38 43 37.8
Date first	1896		Date last	2017		Obs	13
Pa first	259		Pa last	259		P.A. Now (θ)	259°
Sep first	20.0		Sep last	20.4		Sep. Now (ρ)	20.4"
Mag pri	11.70		Mag sec	12.04		delta mag (ΔM)	0.34		Spectral class
Pri motion ra	-009		Sec motion ra	-008
Pri motion dec	-014		Sec motion dec	-013
Notes

rPM=0.085 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69171	19579+3843	SEI 751	AB	1896	2017	13	259	20.4	11.70	12.04	0.34		<===
Show		69171	19579+3843	TOB 163	AC	1929	2017	6	72	23.5	11.70	11.90	0.20
Show		69171	19579+3843	MLB 949	CD	1934	2017	3	105	3.1	12.20	13.80	1.60

Quadruple system
4 visible stars in this system

Precise pa	258.6		Precise sep	20.374		Constellation	Cygnus		SAO	69171
Tycho2	3137-02906-1		Gaia DR2	92756773376

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19579+3843	SEI 751	AB	1998	6	258	20.4	11.70	12.04		D	195749.54+384337.8
19579+3843	SEI 751	AB	2002	7	258	20.4	11.70	12.04		D	195749.54+384337.8
19579+3843	SEI 751	AB	2015	8	258	20.4	11.70	12.04			195749.54+384337.8
19579+3843	SEI 751	AB	2017	9	259	20.4	11.70	12.04			195749.54+384337.8

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