20315+5611 HJ 1540AC

Coord 2000	20315+5611		Discov num	HJ 1540		Comp	AC		Coord arcsec 2000	20 31 29.57 +56 10 48.0
Date first	1905		Date last	2015		Obs	9
Pa first	131		Pa last	130		P.A. Now (θ)	130°
Sep first	41.8		Sep last	40.7		Sep. Now (ρ)	40.7"
Mag pri	8.52		Mag sec	13.48		delta mag (ΔM)	4.96		Spectral class	B5 (blue-white)
Pri motion ra	-002		Sec motion ra	-006
Pri motion dec	-005		Sec motion dec	+005
Notes

rPM=1.379 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		32661	20315+5611	HJ 1540	AB	1828	2015	11	346	22.7	8.52	11.90	3.38
Show		32661	20315+5611	HJ 1540	AC	1905	2015	9	130	40.7	8.52	13.48	4.96		<===

Triple system
3 visible stars in this system

Precise pa	130		Precise sep	40.727		Constellation	Cygnus		SAO	32661
HIP	101256		Tycho2	3954-00366-1		Gaia DR2	33896230144		HD	239436
BD	BD+55 2417		Distance	970.87		Distance ly	3166.98

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20315+5611	HJ 1540	AC	1999	2	130	40.6	8.80	12.50	B5	D	203129.57+561048.0
20315+5611	HJ 1540	AC	2003	3	130	40.8	8.80	12.50	B5	D	203129.57+561048.0
20315+5611	HJ 1540	AC	2013	4	130	40.8	8.52	13.48	B5		203129.57+561048.0
20315+5611	HJ 1540	AC	2015	5	130	40.8	8.52	13.48	B5		203129.57+561048.0

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