20020+3840 A  1411AC

Coord 2000	20020+3840		Discov num	A  1411		Comp	AC		Coord arcsec 2000	20 01 59.20 +38 39 55.4
Date first	1906		Date last	2015		Obs	5
Pa first	208		Pa last	208		P.A. Now (θ)	208°
Sep first	10.2		Sep last	10.2		Sep. Now (ρ)	10.2"
Mag pri	8.59		Mag sec	13.40		delta mag (ΔM)	4.81		Spectral class	A3V (white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-002		Sec motion dec
Notes

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			20020+3840	A 1411	AB	1906	1997	6	203	1.4	8.59	12.30	3.71
Show			20020+3840	A 1411	AC	1906	2015	5	208	10.2	8.59	13.40	4.81		<===
Show			20020+3840	A 1411	AD	1906	2015	5	116	22.7	8.59	13.60	5.01

Quadruple system
4 visible stars in this system

Precise pa	208.2		Precise sep	10.218		Constellation	Cygnus		SAO	69289
Tycho2	3150-01983-1		Gaia DR2	11337665408		HD	190131

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20020+3840	A 1411	AC	2000	3	209	9.9	8.59	13.40		D	200159.20+383955.4
20020+3840	A 1411	AC	2002	4	208	10.1	8.59	13.40		D	200159.20+383955.4
20020+3840	A 1411	AC	2015	5	208	10.2	8.59	13.40	A3V		200159.20+383955.4

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