20255+5441 HJ 1516AC

Coord 2000	20255+5441		Discov num	HJ 1516		Comp	AC		Coord arcsec 2000	20 25 32.81 +54 41 03.1
Date first	1912		Date last	2015		Obs	9
Pa first	204		Pa last	204		P.A. Now (θ)	204°
Sep first	49.5		Sep last	50.3		Sep. Now (ρ)	50.3"
Mag pri	7.25		Mag sec	11.80		delta mag (ΔM)	4.55		Spectral class	B2Ve (blue-white)
Pri motion ra	-003		Sec motion ra	-016
Pri motion dec	-005		Sec motion dec	-011
Notes

rPM=0.737 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	203.6		Precise sep	50.313		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	AC	1999	2	203	50.4	7.25	11.80	B2Ve	D	202532.81+544103.1
20255+5441	HJ 1516	AC	2003	3	204	49.8	7.25	11.80	B2Ve	D	202532.81+544103.1
20255+5441	HJ 1516	AC	2013	4	204	50.5	7.25	11.80	B2Ve		202532.81+544103.1
20255+5441	HJ 1516	AC	2015	5	204	50.3	7.25	11.80	B2Ve		202532.81+544103.1

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