20169+1506 ABH 136AJ

Coord 2000	20169+1506		Discov num	ABH 136		Comp	AJ		Coord arcsec 2000	20 16 56.66 +15 05 34.6
Date first	1987		Date last	2015		Obs	10
Pa first	57		Pa last	57		P.A. Now (θ)	57°
Sep first	93.6		Sep last	93.0		Sep. Now (ρ)	93"
Mag pri	12.20		Mag sec	15.30		delta mag (ΔM)	3.1		Spectral class	F4V (yellow-white)
Pri motion ra	+016		Sec motion ra	-000
Pri motion dec	+004		Sec motion dec	+013
Notes	U R (Proper motion indicates non-physical, Red magnitudes)

Visually invisible, K-band or other infrared star rPM=1.113 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20169+1506	CHE 268	AB	1910	2015	11	213	10.2	12.20	12.30	0.10
Show			20169+1506	CHE 268	AC	1910	2015	9	337	21.4	12.20	12.49	0.29
Show			20169+1506	ABH 136	AD	1987	2015	10	281	39.7	12.20	13.86	1.66
Show			20169+1506	ABH 136	AE	1987	2015	9	231	74.0	12.20	15.80	3.60
Show			20169+1506	ABH 136	AF	1987	2015	7	217	52.4	12.20	14.80	2.60
Show			20169+1506	ABH 136	AG	1987	2015	9	212	51.0	12.20	14.70	2.50
Show			20169+1506	ABH 136	AH	1987	2015	9	190	55.4	12.20	14.50	2.30
Show			20169+1506	ABH 136	AI	1987	2015	9	181	67.9	12.20	15.40	3.20
Show			20169+1506	ABH 136	AJ	1987	2015	10	57	93.0	12.20	15.30	3.10		<===
Show			20169+1506	ABH 136	AK	1987	2015	10	65	103.2	12.20	15.80	3.60
Show			20169+1506	ABH 136	AL	1987	2015	10	64	125.3	12.20	15.80	3.60
Show			20169+1506	CHE 268	BC	1987	2015	9	354	28.4	12.30	12.49	0.19

12-fold system
12 visible stars in this system

Precise pa

56.6

Precise sep

93.033

Constellation

Delphinus

Gaia DR2

84820097408

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20169+1506	ABH 136	AJ	2002	3	56	93.3	12.33	15.40		D	201656.66+150534.6
20169+1506	ABH 136	AJ	2008	4	56	93.7	12.33	15.40		D	201656.66+150534.6
20169+1506	ABH 136	AJ	2015	6	57	93.0	12.20	15.30	F4V	U R	201656.66+150534.6

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