20073+3738 POP 189AC

Coord 2000	20073+3738		Discov num	POP 189		Comp	AC		Coord arcsec 2000	20 07 21.55 +37 38 00.2
Date first	1985		Date last	2015		Obs	5
Pa first	329		Pa last	328		P.A. Now (θ)	328°
Sep first	7.0		Sep last	7.7		Sep. Now (ρ)	7.7"
Mag pri	11.45		Mag sec	13.00		delta mag (ΔM)	1.55		Spectral class	B2 (blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-006		Sec motion dec
Notes

Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69450	20073+3738	TDT1995	AB	1991	1991	1	344	2.5	11.45	12.02	0.57
Show		69450	20073+3738	POP 189	AC	1985	2015	5	328	7.7	11.45	13.00	1.55		<===

Triple system
3 visible stars in this system

Precise pa	327.6		Precise sep	7.655		Constellation	Cygnus		SAO	69450
Tycho2	3150-03138-1		Gaia DR2	92303641984

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20073+3738	POP 189	AC	1998	3	327	7.7	11.45	13.00		D	200721.55+373800.2
20073+3738	POP 189	AC	2002	4	328	7.6	11.45	13.00		D	200721.55+373800.2
20073+3738	POP 189	AC	2015	5	328	7.7	11.45	13.00	B2		200721.55+373800.2

If you need more information about this double, apply for a data request form to the WDS.