18310+3857 SLE 187AB

Coord 2000	18310+3857		Discov num	SLE 187		Comp	AB		Coord arcsec 2000	18 31 00.96 +38 56 56.4
Date first	1933		Date last	2015		Obs	14
Pa first	214		Pa last	210		P.A. Now (θ)	210°
Sep first	21.9		Sep last	23.6		Sep. Now (ρ)	23.6"
Mag pri	10.45		Mag sec	11.60		delta mag (ΔM)	1.15		Spectral class
Pri motion ra	-009		Sec motion ra	-005
Pri motion dec	+011		Sec motion dec	-016
Notes

rPM=1.628 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			18 31 01 +38 56 56	TDT 922 Aa,Ab	1991	1	15	0.5	11.04	11.23	0.19
Show			18 31 01 +38 56 56	SLE 187 AB	2015	14	210	23.6	10.45	11.60	1.15		<===
Show			18 31 01 +38 56 56	FYM 40 AC	2012	4	85	71.0	10.45	10.64	0.19
Show			18 31 01 +38 56 56	FYM 40 AD	2015	8	294	13.5	10.45	14.50	4.05
Show			18 31 01 +38 56 56	FYM 40 AE	2015	8	210	34.9	10.45	14.50	4.05
Show			18 30 60 +38 56 36	FYM 40 BE	2015	8	210	11.3	11.60	14.50	2.90

Sextuple system
5 visible stars in this system

Precise pa	210.2		Precise sep	23.574		Constellation	Lyra		Tycho2	3105-00926-1
Gaia DR2	2108501292168293504

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18310+3857	SLE 187	AB	2006	7	208	24.2	10.45	11.60		D	183100.96+385656.3
18310+3857	SLE 187	AB	2012	9	208	24.3	10.45	11.60		D	183100.96+385656.3
18310+3857	SLE 187	AB	2015	10	210	23.6	10.45	11.60			183100.96+385656.4

If you need more information about this double, apply for a data request form to the WDS.