20213+3758 LDS1040AC

Coord 2000	20213+3758		Discov num	LDS1040		Comp	AC		Coord arcsec 2000	20 21 21.32 +37 58 23.5
Date first	1936		Date last	2015		Obs	9
Pa first	87		Pa last	74		P.A. Now (θ)	74°
Sep first	217.0		Sep last	206.3		Sep. Now (ρ)	206.3"
Mag pri	11.47		Mag sec	11.00		delta mag (ΔM)	0.47		Spectral class
Pri motion ra	+001		Sec motion ra	-004
Pri motion dec	-003		Sec motion dec	-014
Notes	N (See Notes)

rPM=0.83 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 21 21 +37 58 24	SEI 1098 AB	2015	9	146	21.7	11.47	12.90	1.43
Show			20 21 21 +37 58 24	LDS 1040 AC	2015	9	74	206.3	11.47	11.00	0.47		<===

Triple system
3 visible stars in this system

Precise pa	73.5		Precise sep	206.261		Constellation	Cygnus		Tycho2	3152-00260-1
Gaia DR2	2061019363559314048

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20213+3758	LDS1040	AC	1936	1	87	217.0	11.65	13.70			202121.32+375823.5
20213+3758	LDS1040	AC	2002	4	74	206.4	11.47	11.00		N	202121.32+375823.5
20213+3758	LDS1040	AC	2015	5	74	206.4	11.47	11.00		N	202121.32+375823.5

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