20213+3758 SEI1098AB

Coord 2000	20213+3758		Discov num	SEI1098		Comp	AB		Coord arcsec 2000	20 21 21.32 +37 58 23.5
Date first	1895		Date last	2015		Obs	9
Pa first	146		Pa last	146		P.A. Now (θ)	146°
Sep first	22.5		Sep last	21.7		Sep. Now (ρ)	21.7"
Mag pri	11.47		Mag sec	12.90		delta mag (ΔM)	1.43		Spectral class
Pri motion ra	+001		Sec motion ra	+001
Pri motion dec	-003		Sec motion dec	+001
Notes	N (See Notes)

rPM=1.265 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	146		Precise sep	21.667		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	SEI1098	AB	2002	4	146	21.7	11.65	12.90			202121.32+375823.5
20213+3758	SEI1098	AB	2015	5	146	21.8	11.47	12.90		N	202121.32+375823.5

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