20077+3709 POP 190AC

Coord 2000	20077+3709		Discov num	POP 190		Comp	AC		Coord arcsec 2000	20 07 40.47 +37 08 56.6
Date first	1984		Date last	2015		Obs	4
Pa first	230		Pa last	230		P.A. Now (θ)	230°
Sep first	40.8		Sep last	40.8		Sep. Now (ρ)	40.8"
Mag pri	11.74		Mag sec	12.70		delta mag (ΔM)	0.96		Spectral class	F2III (yellow-white)
Pri motion ra	-002		Sec motion ra	+001
Pri motion dec	-007		Sec motion dec	-010
Notes

rPM=0.422 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 07 40 +37 08 57	POP 190 AB	2015	8	186	5.6	11.74	12.60	0.86
Show			20 07 40 +37 08 57	POP 190 AC	2015	4	230	40.8	11.74	12.70	0.96		<===
Show			20 07 38 +37 08 30	POP 190 CD	2015	4	310	4.4	12.70	14.20	1.50

Quadruple system
4 visible stars in this system

Precise pa	229.5		Precise sep	40.824		Constellation	Cygnus		Tycho2	2683-01251-1
Gaia DR2	2060030039314982272

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20077+3709	POP 190	AC	1998	2	223	89.1	11.74	12.70		D	200740.46+370856.6
20077+3709	POP 190	AC	2002	3	230	40.9	11.74	12.70	F2III		200740.47+370856.6
20077+3709	POP 190	AC	2015	4	230	40.8	11.74	12.70	F2III		200740.47+370856.6

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