21258+3640 FYM 124CD

Coord 2000	21258+3640		Discov num	FYM 124		Comp	CD		Coord arcsec 2000	21 25 51.40 +36 39 54.6
Date first	2000		Date last	2015		Obs	7
Pa first	84		Pa last	84		P.A. Now (θ)	84°
Sep first	19.8		Sep last	19.4		Sep. Now (ρ)	19.4"
Mag pri	10.22		Mag sec	13.90		delta mag (ΔM)	3.68		Spectral class	F6 (yellow-white)
Pri motion ra	-001		Sec motion ra	-012
Pri motion dec	-016		Sec motion dec	-013
Notes	N (See Notes)

rPM=0.644 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	69 Cyg	71329	21 25 47 +36 40 02	S 790 AB	2015	13	28	34.5	5.89	11.71	5.82
Show		71329	21 25 47 +36 40 02	S 790 AC	2015	25	99	53.1	5.89	10.22	4.33
Show		71329	21 25 51 +36 39 55	FYM 124 CD	2015	7	84	19.4	10.22	13.90	3.68		<===

Quadruple system
4 visible stars in this system

Precise pa	83.8		Precise sep	19.41		Constellation	Cygnus		SAO	71329
Gaia DR2	1963720070629288960		HD	204172		HR	8209		DM	BD+36 4557
Flamsteed	69 Cygni		Flamsteed name	69 Cyg

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21258+3640	FYM 124	CD	2012	2	87	16.6	10.22	13.90	F6	N	212551.40+363954.6
21258+3640	FYM 124	CD	2015	3	84	19.4	10.22	13.90	F6	N	212551.40+363954.6

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