21068+3408 FYM 123AF

Coord 2000	21068+3408		Discov num	FYM 123		Comp	AF		Coord arcsec 2000	21 06 46.78 +34 07 56.2
Date first	1998		Date last	2015		Obs	7
Pa first	308		Pa last	310		P.A. Now (θ)	310°
Sep first	30.7		Sep last	31.2		Sep. Now (ρ)	31.2"
Mag pri	7.90		Mag sec	15.40		delta mag (ΔM)	7.5		Spectral class	A4III (white)
Pri motion ra	+003		Sec motion ra
Pri motion dec	-028		Sec motion dec
Notes	W

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		70925	21 06 47 +34 07 56	STF 2760 AB	2020	242	33	5.6	7.90	8.74	0.84
Show		70925	21 06 47 +34 07 56	STF 2760 AC	2016	20	150	57.4	7.90	11.85	3.95
Show		70925	21 06 47 +34 07 56	WAL 136 AD	2016	14	9	30.7	7.90	13.25	5.35
Show		70925	21 06 47 +34 07 56	FYM 123 AE	2016	8	211	27.0	7.90	14.10	6.20
Show		70925	21 06 47 +34 07 56	FYM 123 AF	2015	7	310	31.2	7.90	15.40	7.50		<===
Show		70925	21 06 47 +34 07 56	FYM 123 AG	2015	4	113	46.1	7.90	16.00	8.10

Septuple system
7 visible stars in this system

Precise pa	309.9		Precise sep	31.205		Constellation	Cygnus		SAO	70925
HIP	104210		Tycho2	2709-01318-1		Gaia DR2	1867101865032322432		HD	201156
BD	BD+33 4162		Distance	137.17		Distance ly	447.45

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21068+3408	FYM 123	AF	2012	3	310	31.2	7.90	15.40	A4III		210646.78+340756.2
21068+3408	FYM 123	AF	2015	4	310	31.2	7.90	15.40	A4III	W	210646.78+340756.2

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