20193+3635 AG  253AC

Coord 2000	20193+3635		Discov num	AG  253		Comp	AC		Coord arcsec 2000	20 19 18.43 +36 35 08.5
Date first	1896		Date last	2015		Obs	13
Pa first	270		Pa last	268		P.A. Now (θ)	268°
Sep first	171.5		Sep last	171.9		Sep. Now (ρ)	171.9"
Mag pri	9.38		Mag sec	11.28		delta mag (ΔM)	1.9		Spectral class	G5 (yellow)
Pri motion ra	-003		Sec motion ra	-007
Pri motion dec	-019		Sec motion dec	-041
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.538 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		69829	20193+3635	AG 253	AB	1896	2018	30	118	9.8	9.38	9.85	0.47
Show		69829	20193+3635	AG 253	AC	1896	2015	13	268	171.9	9.38	11.28	1.90		<===

Triple system
3 visible stars in this system

Precise pa	267.9		Precise sep	171.852		Constellation	Cygnus		SAO	69829
Tycho2	2684-01643-1		Gaia DR2	93381925248		HD	228899

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20193+3635	AG 253	AC	1991	6	268	171.7	9.38	11.28			201918.43+363508.5
20193+3635	AG 253	AC	2008	7	269	173.2	9.38	11.28			201918.43+363508.5
20193+3635	AG 253	AC	2015	13	268	171.9	9.38	11.28	G5	N	201918.43+363508.5

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