18520+3731 ES 2026AB

Coord 2000	18520+3731		Discov num	ES 2026		Comp	AB		Coord arcsec 2000	18 52 01.50 +37 30 59.5
Date first	1923		Date last	2015		Obs	4
Pa first	108		Pa last	112		P.A. Now (θ)	112°
Sep first	19.7		Sep last	20.5		Sep. Now (ρ)	20.5"
Mag pri	7.34		Mag sec	12.80		delta mag (ΔM)	5.46		Spectral class	B8V (blue-white)
Pri motion ra	+001		Sec motion ra	+019
Pri motion dec	-004		Sec motion dec	-020
Notes

rPM=0.873 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		67494	18520+3731	ES 2026	AB	1923	2015	4	112	20.5	7.34	12.80	5.46		<===
Show		67494	18520+3731	ES 2026	BC	1923	2015	4	334	4.6	12.80	13.30	0.50

Triple system
3 visible stars in this system

Precise pa	112.3		Precise sep	20.527		Constellation	Lyra		SAO	67494
HIP	92590		Tycho2	3119-02078-1		Gaia DR2	2093997771729963008		HD	175081
BD	BD+37 3262		Distance	353.36		Distance ly	1152.66

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18520+3731	ES 2026	AB	2000	2	111	20.7	7.34	12.80	B8V	D	185201.50+373059.5
18520+3731	ES 2026	AB	2002	3	111	20.5	7.34	12.80	B8V	D	185201.50+373059.5
18520+3731	ES 2026	AB	2015	4	112	20.5	7.34	12.80	B8V		185201.50+373059.5

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