19450+4508 DAL  37FG

Coord 2000	19450+4508		Discov num	DAL  37		Comp	FG		Coord arcsec 2000	19 45 11.17 +45 08 51.4
Date first	2007		Date last	2015		Obs	2
Pa first	311		Pa last	312		P.A. Now (θ)	312°
Sep first	3.2		Sep last	3.1		Sep. Now (ρ)	3.1"
Mag pri	13.00		Mag sec	13.80		delta mag (ΔM)	0.8		Spectral class
Pri motion ra	-001		Sec motion ra
Pri motion dec	-009		Sec motion dec
Notes	N (See Notes)

Visually invisible, K-band or other infrared star 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	Del Cyg	48796	19450+4508	STF2579	AB	1826	2017	487	215	2.8	2.89	6.27	3.38	Y
Show		48796	19450+4508	STF2579	AC	1913	2017	8	67	62.5	2.89	12.00	9.11
Show		48796	19450+4508	DAL 37	AD	1998	2007	3	246	42.0	2.89	14.80	11.91
Show		48796	19450+4508	DAL 37	AF	1998	2007	3	66	147.5	2.89	12.80	9.91
Show		48796	19450+4508	DAL 37	DE	1998	2015	4	251	3.5	14.80	15.20	0.40
Show		48796	19450+4508	DAL 37	FG	2007	2015	2	312	3.1	13.00	13.80	0.80		<===

Septuple system
7 visible stars in this system

Precise pa	311.5		Precise sep	3.055		Constellation	Cygnus		SAO	48796
Gaia DR2	28029245440		HD	186882		HR	7528		DM	BD+44 3234
Flamsteed	18 Cygni		Flamsteed name	18 Cyg

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19450+4508	DAL 37	FG	2007	1	311	3.2	13.10	13.80			194511.17+450851.4
19450+4508	DAL 37	FG	2015	2	312	3.1	13.00	13.80		N	194511.17+450851.4

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