19480+3513 SEI 684AC

Coord 2000	19480+3513		Discov num	SEI 684		Comp	AC		Coord arcsec 2000	19 48 07.46 +35 12 28.7
Date first	1894		Date last	2018		Obs	14
Pa first	234		Pa last	235		P.A. Now (θ)	235°
Sep first	24.8		Sep last	26.1		Sep. Now (ρ)	26.1"
Mag pri	11.40		Mag sec	10.74		delta mag (ΔM)	0.66		Spectral class
Pri motion ra	+011		Sec motion ra	+000
Pri motion dec	+001		Sec motion dec	-003
Notes

rPM=1.06 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		68877	19480+3513	BU 1473	AB	1941	2018	8	17	1.4	11.40	11.38	0.02
Show		68877	19480+3513	SEI 684	AC	1894	2018	14	235	26.1	11.40	10.74	0.66		<===

Triple system
3 visible stars in this system

Precise pa	234.5		Precise sep	26.119		Constellation	Cygnus		SAO	68877
Tycho2	2677-00763-1		Gaia DR2	88517260800

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19480+3513	SEI 684	AC	1998	8	234	25.9	11.40	10.74		D	194807.46+351228.7
19480+3513	SEI 684	AC	2002	12	234	25.9	11.40	10.74		D	194807.46+351228.7
19480+3513	SEI 684	AC	2015	13	235	25.7	11.40	10.74			194807.46+351228.7
19480+3513	SEI 684	AC	2018	14	235	26.1	11.40	10.74			194807.46+351228.7

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