20077+3709 POP 190AB

Coord 2000	20077+3709		Discov num	POP 190		Comp	AB		Coord arcsec 2000	20 07 40.47 +37 08 56.6
Date first	1985		Date last	2015		Obs	8
Pa first	189		Pa last	186		P.A. Now (θ)	186°
Sep first	4.9		Sep last	5.6		Sep. Now (ρ)	5.6"
Mag pri	11.74		Mag sec	12.60		delta mag (ΔM)	0.86		Spectral class	F2III (yellow-white)
Pri motion ra	-002		Sec motion ra	-014
Pri motion dec	-007		Sec motion dec	-049
Notes

rPM=0.857 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20077+3709	POP 190	AB	1985	2015	8	186	5.6	11.74	12.60	0.86		<===
Show			20077+3709	POP 190	AC	1984	2015	4	230	40.8	11.74	12.70	0.96
Show			20077+3709	POP 190	CD	1985	2015	4	310	4.4	12.70	14.20	1.50

Quadruple system
4 visible stars in this system

Precise pa	185.6		Precise sep	5.592		Constellation	Cygnus		Tycho2	2683-01251-1
Gaia DR2	39314982272

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20077+3709	POP 190	AB	1998	2	187	5.5	11.74	13.70		D	200740.46+370856.6
20077+3709	POP 190	AB	2002	3	186	5.6	11.74	12.60		D	200740.47+370856.6
20077+3709	POP 190	AB	2015	4	186	5.6	11.74	12.60	F2III		200740.47+370856.6

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