19465+5308 ES  658AC

Coord 2000	19465+5308		Discov num	ES  658		Comp	AC		Coord arcsec 2000	19 46 28.42 +53 07 50.0
Date first	1902		Date last	2018		Obs	10
Pa first	91		Pa last	90		P.A. Now (θ)	90°
Sep first	31.0		Sep last	30.9		Sep. Now (ρ)	30.9"
Mag pri	9.37		Mag sec	11.88		delta mag (ΔM)	2.51		Spectral class	F8 (yellow-white)
Pri motion ra	+008		Sec motion ra	+004
Pri motion dec	+004		Sec motion dec	+010
Notes

rPM=0.67 Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		31978	19465+5308	ES 658	AB	1908	2015	6	306	6.5	9.40	14.80	5.40
Show		31978	19465+5308	ES 658	AC	1902	2018	10	90	30.9	9.37	11.88	2.51		<===
Show		31978	19465+5308	ES 658	CD	1908	2015	8	281	8.6	12.80	13.80	1.00

Quadruple system
4 visible stars in this system

Precise pa	90.2		Precise sep	30.867		Constellation	Cygnus		SAO	31978
Tycho2	3934-02152-1		Gaia DR2	84484493056		HD	235000

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19465+5308	ES 658	AC	2000	4	90	31.0	9.39	12.80	F8	D	194628.42+530750.0
19465+5308	ES 658	AC	2003	5	90	31.0	9.40	12.80	F8	D	194628.42+530750.0
19465+5308	ES 658	AC	2015	6	90	31.0	9.37	11.88	F8		194628.42+530750.0
19465+5308	ES 658	AC	2018	7	90	30.9	9.37	11.88	F8		194628.42+530750.0

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