20052+4923 ABH 128AG

Coord 2000	20052+4923		Discov num	ABH 128		Comp	AG		Coord arcsec 2000	20 05 17.06 +49 23 55.3
Date first	1987		Date last	2015		Obs	8
Pa first	318		Pa last	318		P.A. Now (θ)	318°
Sep first	81.0		Sep last	81.1		Sep. Now (ρ)	81.1"
Mag pri	10.87		Mag sec	15.50		delta mag (ΔM)	4.63		Spectral class	K2III (yellow-orange)
Pri motion ra	-002		Sec motion ra	-008
Pri motion dec	-015		Sec motion dec	+001
Notes	U (Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=1.129 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20052+4923	HJ 1481	AB	1828	2015	18	6	18.1	10.87	10.76	0.11
Show			20052+4923	HJ 1481	AC	1901	2015	16	272	27.4	10.87	10.53	0.34
Show			20052+4923	ABH 128	AD	1987	2015	8	104	118.5	10.87	14.17	3.30
Show			20052+4923	ABH 128	AE	1987	2015	8	104	104.9	10.87	14.10	3.23
Show			20052+4923	ABH 128	AF	1987	2015	8	38	78.2	10.87	15.13	4.26
Show			20052+4923	ABH 128	AG	1987	2015	8	318	81.1	10.87	15.50	4.63		<===
Show			20052+4923	ABH 128	AH	1987	2015	8	256	100.8	10.87	15.20	4.33
Show			20052+4923	ABH 128	AI	1987	2015	8	250	103.4	10.87	15.20	4.33
Show			20052+4923	ARN9002	BC	1828	2015	15	240	33.8	10.76	10.53	0.23

Ninefold system
9 visible stars in this system

Precise pa	317.6		Precise sep	81.101		Constellation	Cygnus		Tycho2	3567-00926-1
Gaia DR2	23586080256

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20052+4923	ABH 128	AG	1999	2	318	81.0	10.87	15.50	K2III	D	200517.06+492355.3
20052+4923	ABH 128	AG	2003	3	318	81.0	10.87	15.50	K2III	UD	200517.06+492355.3
20052+4923	ABH 128	AG	2015	4	318	81.1	10.87	15.50	K2III	U	200517.06+492355.3

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