20255+5441 HJ 1516AB

Coord 2000	20255+5441		Discov num	HJ 1516		Comp	AB		Coord arcsec 2000	20 25 32.81 +54 41 03.1
Date first	1828		Date last	2015		Obs	15
Pa first	148		Pa last	147		P.A. Now (θ)	147°
Sep first	20.0		Sep last	47.3		Sep. Now (ρ)	47.3"
Mag pri	7.25		Mag sec	11.20		delta mag (ΔM)	3.95		Spectral class	B2Ve (blue-white)
Pri motion ra	-003		Sec motion ra	+000
Pri motion dec	-005		Sec motion dec	-008
Notes

rPM=0.53 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		32566	20 25 33 +54 41 03	HJ 1516 AB	2015	15	147	47.3	7.25	11.20	3.95		<===
Show		32566	20 25 33 +54 41 03	HJ 1516 AC	2015	9	204	50.3	7.25	11.80	4.55

Triple system
3 visible stars in this system

Precise pa	146.8		Precise sep	47.304		Constellation	Cygnus		SAO	32566
HIP	100744		Tycho2	3941-00371-1		Gaia DR2	2185075095866220928		HD	194883
BD	BD+54 2348		Distance	934.58		Distance ly	3048.6

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20255+5441	HJ 1516	AB	1999	7	147	47.4	7.25	11.20	B2Ve	D	202532.81+544103.1
20255+5441	HJ 1516	AB	2003	9	147	46.9	7.25	11.20	B2Ve	D	202532.81+544103.1
20255+5441	HJ 1516	AB	2013	10	147	47.7	7.25	11.20	B2Ve		202532.81+544103.1
20255+5441	HJ 1516	AB	2015	11	147	47.3	7.25	11.20	B2Ve		202532.81+544103.1

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