20375+3134 STFA 53 AB (48 Cyg)

Coord 2000	20375+3134		Discov num	STFA 53		Comp	AB		Coord arcsec 2000	20 37 31.77 +31 34 21.1
Date first	1835		Date last	2012		Obs	35
Pa first	175		Pa last	177		P.A. Now (θ)	177°
Sep first	178.0		Sep last	182.7		Sep. Now (ρ)	182.7"
Mag pri	6.29		Mag sec	6.54		delta mag (ΔM)	0.25		Spectral class	B8III+F0V (blue-white/yellow-white)
Pri motion ra	+009		Sec motion ra	-034
Pri motion dec	-000		Sec motion dec	-031
Notes	N Y (See Notes, Parallax indicates components are non-physical)

rPM=1.152 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	48 Cyg	70287	20 37 32 +31 34 21	STFA 53 AB	2012	35	177	182.7	6.29	6.54	0.25		<===
Show		70287	20 37 32 +31 34 21	STFA 53 AC	2015	4	0	71.3	6.29	13.52	7.23
Show		70287	20 37 32 +31 34 21	FYM 138 AH	2012	3	89	111.0	6.29	14.00	7.71
Show		70289	20 37 33 +31 31 19	FYM 138 BD	2015	4	35	41.0	6.54	14.50	7.96
Show		70289	20 37 33 +31 31 19	FYM 138 BE	2015	4	29	58.4	6.54	14.40	7.86
Show		70289	20 37 33 +31 31 19	FYM 138 BF	2015	4	81	38.8	6.54	15.20	8.66
Show		70289	20 37 33 +31 31 19	FYM 138 BG	2015	4	83	62.5	6.54	15.00	8.46

Octuple system
8 estimated visually detectable stars in this system

Name	48 Cyg		Constellation	Cygnus		SAO	70287		HIP	101765
Tycho2	2686-01751-1		Gaia DR2	1862667259759305216		HD	196606		HR	7885
GC	28713		BD	BD+31 4159		Flamsteed	48 Cygni		Flamsteed name	48 Cyg
Distance	261.78		Distance ly	853.93