19420+5201 ES  794AB

Coord 2000	19420+5201		Discov num	ES  794		Comp	AB		Coord arcsec 2000	19 42 02.87 +52 01 04.4
Date first	1899		Date last	2018		Obs	17
Pa first	261		Pa last	256		P.A. Now (θ)	256°
Sep first	42.5		Sep last	45.6		Sep. Now (ρ)	45.6"
Mag pri	9.35		Mag sec	10.05		delta mag (ΔM)	0.7		Spectral class	K7 (yellow-orange)
Pri motion ra	+007		Sec motion ra	-007
Pri motion dec	+012		Sec motion dec	-024
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.545 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		31903	19420+5201	ES 794	AB	1899	2018	17	256	45.6	9.35	10.05	0.70		<===
Show		31901	19420+5201	ES 794	BC	1909	2015	8	102	7.7	10.05	14.20	4.15

Triple system
3 visible stars in this system

Precise pa	256		Precise sep	45.595		Constellation	Cygnus		SAO	31903
Tycho2	3569-01212-1		Gaia DR2	74287672704		HD	234978

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19420+5201	ES 794	AB	2004	11	256	44.4	9.35	10.05	K7	N D	194202.87+520104.4
19420+5201	ES 794	AB	2015	13	256	45.5	9.35	10.05	K7	N	194202.87+520104.4
19420+5201	ES 794	AB	2018	14	256	45.6	9.35	10.05	K7	N	194202.87+520104.4

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