20144+3524 ES  244AB

Coord 2000	20144+3524		Discov num	ES  244		Comp	AB		Coord arcsec 2000	20 14 25.83 +35 24 25.6
Date first	1905		Date last	2015		Obs	7
Pa first	130		Pa last	130		P.A. Now (θ)	130°
Sep first	40.7		Sep last	41.2		Sep. Now (ρ)	41.2"
Mag pri	8.44		Mag sec	12.25		delta mag (ΔM)	3.81		Spectral class	B7V (blue-white)
Pri motion ra	+001		Sec motion ra	-001
Pri motion dec	+001		Sec motion dec	-001
Notes

rPM=2 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69673	20144+3524	ES 244	AB	1905	2015	7	130	41.2	8.44	12.25	3.81		<===
Show		69673	20144+3524	ES 244	BC	1905	2015	5	17	4.9	12.25	12.90	0.65
Show		69673	20144+3524	ES 244	CD	1905	2015	4	304	4.1	12.90	14.10	1.20

Quadruple system
4 visible stars in this system

Precise pa	130.2		Precise sep	41.236		Constellation	Cygnus		SAO	69673
Tycho2	2679-00443-1		Gaia DR2	98086786432		HD	192606

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20144+3524	ES 244	AB	1991	4	125	39.1	8.44	12.25	B7V	D	201425.83+352425.6
20144+3524	ES 244	AB	1999	5	130	41.2	8.44	12.25	B7V	D	201425.83+352425.6
20144+3524	ES 244	AB	2002	6	124	39.4	8.44	12.25	B7V	D	201425.83+352425.6
20144+3524	ES 244	AB	2015	7	130	41.2	8.44	12.25	B7V		201425.83+352425.6

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