19393+3152 SEI 654AB

Coord 2000	19393+3152		Discov num	SEI 654		Comp	AB		Coord arcsec 2000	19 39 20.06 +31 52 19.5
Date first	1893		Date last	2015		Obs	13
Pa first	117		Pa last	115		P.A. Now (θ)	115°
Sep first	15.7		Sep last	14.8		Sep. Now (ρ)	14.8"
Mag pri	9.30		Mag sec	10.68		delta mag (ΔM)	1.38		Spectral class	G8III (yellow)
Pri motion ra	+013		Sec motion ra	+004
Pri motion dec	-004		Sec motion dec	+002
Notes

rPM=0.795 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		68636	19393+3152	SEI 654	AB	1893	2015	13	115	14.8	9.30	10.68	1.38		<===
Show		68636	19393+3152	BKO 75	AC	1998	2015	8	15	13.2	9.30	12.50	3.20
Show		68636	19393+3152	BKO 75	AD	1998	2015	8	72	85.9	9.30	11.20	1.90
Show		68636	19393+3152	BKO 75	DE	1998	2015	8	251	7.9	11.20	13.50	2.30

Quintuple system
5 visible stars in this system

Precise pa	114.7		Precise sep	14.788		Constellation	Cygnus		SAO	68636
Tycho2	2656-01315-1		Gaia DR2	08998845312

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19393+3152	SEI 654	AB	2002	6	115	14.9	9.30	10.68	G8III	D	193920.07+315219.5
19393+3152	SEI 654	AB	2012	8	115	14.8	9.30	10.68	G8III	D	193920.07+315219.5
19393+3152	SEI 654	AB	2015	9	115	14.8	9.30	10.68	G8III		193920.06+315219.5

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