20118+3726 SLE 959AC

Coord 2000	20118+3726		Discov num	SLE 959		Comp	AC		Coord arcsec 2000	20 11 50.19 +37 26 02.4
Date first	1929		Date last	2015		Obs	10
Pa first	180		Pa last	176		P.A. Now (θ)	176°
Sep first	22.1		Sep last	21.9		Sep. Now (ρ)	21.9"
Mag pri	10.69		Mag sec	13.30		delta mag (ΔM)	2.61		Spectral class
Pri motion ra	-008		Sec motion ra	+004
Pri motion dec	-003		Sec motion dec	-002
Notes

rPM=1.409 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 11 50 +37 26 02	SLE 959 AB	2015	11	162	13.0	10.69	12.50	1.81
Show			20 11 50 +37 26 02	SLE 959 AC	2015	10	176	21.9	10.69	13.30	2.61		<===

Triple system
3 visible stars in this system

Precise pa	176.2		Precise sep	21.907		Constellation	Cygnus		Tycho2	2683-00687-1
Gaia DR2	2060790420327929344

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20118+3726	SLE 959	AC	1985	2	177	21.8	11.80	12.30			201150.08+372606.8
20118+3726	SLE 959	AC	2011	3	176	21.9	11.80	12.30			201150.08+372606.8
20118+3726	SLE 959	AC	2014	6	179	21.4	10.69	13.30			201150.19+372602.4
20118+3726	SLE 959	AC	2015	7	176	21.9	10.69	13.30			201150.19+372602.4

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