19437+3953 SEI 673AC

Coord 2000	19437+3953		Discov num	SEI 673		Comp	AC		Coord arcsec 2000	19 43 47.31 +39 53 08.0
Date first	1917		Date last	2015		Obs	8
Pa first	262		Pa last	262		P.A. Now (θ)	262°
Sep first	17.6		Sep last	17.6		Sep. Now (ρ)	17.6"
Mag pri	10.33		Mag sec	13.00		delta mag (ΔM)	2.67		Spectral class	K2 (yellow-orange)
Pri motion ra	-005		Sec motion ra	-005
Pri motion dec	-004		Sec motion dec	+001
Notes

rPM=0.781 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		68774	19 43 47 +39 53 08	SEI 673 AB	2015	11	56	10.6	10.33	12.30	1.97
Show		68774	19 43 47 +39 53 08	SEI 673 AC	2015	8	262	17.6	10.33	13.00	2.67		<===

Triple system
3 visible stars in this system

Precise pa	262.2		Precise sep	17.616		Constellation	Cygnus		SAO	68774
Tycho2	3140-02613-1		Gaia DR2	2076321812345274496		HD	225559

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19437+3953	SEI 673	AC	1998	2	261	17.6	10.33	13.30		D	194347.31+395308.0
19437+3953	SEI 673	AC	2002	3	262	17.7	10.33	13.30		D	194347.31+395308.0
19437+3953	SEI 673	AC	2015	4	262	17.6	10.33	13.00	K2		194347.31+395308.0

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