20143+1507 BKO 539AC

Coord 2000	20143+1507		Discov num	BKO 539		Comp	AC		Coord arcsec 2000	20 14 18.82 +15 07 28.7
Date first	1998		Date last	2015		Obs	4
Pa first	275		Pa last	276		P.A. Now (θ)	276°
Sep first	4.5		Sep last	4.5		Sep. Now (ρ)	4.5"
Mag pri	11.50		Mag sec	14.50		delta mag (ΔM)	3		Spectral class
Pri motion ra	+019		Sec motion ra	-009
Pri motion dec	-011		Sec motion dec	+048
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.337 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	67 Aql	105878	20143+1507	CHE 225	AB	1910	2015	5	212	7.6	11.50	13.60	2.10
Show		105878	20143+1507	BKO 539	AC	1998	2015	4	276	4.5	11.50	14.50	3.00		<===

Triple system
3 visible stars in this system

Precise pa	275.5		Precise sep	4.471		Constellation	Aquila		SAO	105878
Gaia DR2	19680412672		HD	192425		HR	7724		DM	BD+14 4227
Flamsteed	67 Aquilae		Flamsteed name	67 Aql

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20143+1507	BKO 539	AC	2008	1	275	4.3	11.50	14.50		N	201418.82+150728.7
20143+1507	BKO 539	AC	2015	4	276	4.5	11.50	14.50		N	201418.82+150728.7

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