20152+5409 HO  455AD

Coord 2000	20152+5409		Discov num	HO  455		Comp	AD		Coord arcsec 2000	20 15 13.60 +54 08 47.6
Date first	1889		Date last	2015		Obs	13
Pa first	256		Pa last	263		P.A. Now (θ)	263°
Sep first	32.3		Sep last	31.4		Sep. Now (ρ)	31.4"
Mag pri	7.46		Mag sec	11.07		delta mag (ΔM)	3.61		Spectral class	M0 (red)
Pri motion ra	-013		Sec motion ra	-004
Pri motion dec	-032		Sec motion dec	+002
Notes	N (See Notes)

rPM=1.018 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20152+5409	HO 455	AB	1889	2015	8	83	35.1	7.46	12.00	4.54
Show			20152+5409	HO 455	AD	1889	2015	13	263	31.4	7.46	11.07	3.61		<===
Show			20152+5409	HO 455	AE	1889	2015	15	71	39.6	7.46	10.44	2.98
Show			20152+5409	HO 455	BC	1889	2009	6	181	3.6	12.00	12.50	0.50
Show			20152+5409	HO 455	BE	1904	2015	9	30	5.6	12.00	10.44	1.56

Quintuple system
5 visible stars in this system

Precise pa	263.1		Precise sep	31.425		Constellation	Cygnus		SAO	32392
HIP	99822		Tycho2	3937-00865-1		Gaia DR2	42102501504		HD	192967
BD	BD+53 2374		Distance	420.17		Distance ly	1370.59

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20152+5409	HO 455	AD	1999	10	263	31.7	7.46	11.07	M0	D	201513.60+540847.6
20152+5409	HO 455	AD	2009	11	263	31.0	7.46	11.07	M0	D	201513.60+540847.6
20152+5409	HO 455	AD	2015	13	263	31.4	7.46	11.07	M0	N	201513.60+540847.6

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