19572+4022 BU 1474AB

Coord 2000	19572+4022		Discov num	BU 1474		Comp	AB		Coord arcsec 2000	19 57 13.87 +40 22 04.2
Date first	1893		Date last	2015		Obs	18
Pa first	318		Pa last	316		P.A. Now (θ)	316°
Sep first	65.3		Sep last	64.8		Sep. Now (ρ)	64.8"
Mag pri	5.44		Mag sec	9.31		delta mag (ΔM)	3.87		Spectral class	B5V (blue-white)
Pri motion ra	+007		Sec motion ra	-001
Pri motion dec	+000		Sec motion dec	-011
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.231 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		49011	19572+4022	BU 1474	AB	1893	2015	18	316	64.8	5.44	9.31	3.87		<===
Show		49011	19572+4022	BU 1474	AC	1905	2015	4	343	20.5	5.44	13.00	7.56

Triple system
3 visible stars in this system

Precise pa	315.5		Precise sep	64.755		Constellation	Cygnus		SAO	49011
HIP	98194		Tycho2	3141-03693-1		Gaia DR2	12700605696		HD	189178
HR	7628		BD	BD+39 3968		Distance	340.14		Distance ly	1109.54

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19572+4022	BU 1474	AB	2002	13	316	65.2	5.44	9.31	B5V	N D	195713.87+402204.2
19572+4022	BU 1474	AB	2012	15	316	64.7	5.44	9.31	B5V	N D	195713.87+402204.2
19572+4022	BU 1474	AB	2013	16	316	64.0	5.44	9.31	B5V	N	195713.87+402204.2
19572+4022	BU 1474	AB	2014	17	315	63.5	5.44	9.31	B5V	N	195713.87+402204.2
19572+4022	BU 1474	AB	2015	18	316	64.8	5.44	9.31	B5V	N	195713.87+402204.2

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