20115+3630 SLE 954AC

Coord 2000	20115+3630		Discov num	SLE 954		Comp	AC		Coord arcsec 2000	20 11 27.26 +36 29 56.8
Date first	1896		Date last	2015		Obs	9
Pa first	294		Pa last	294		P.A. Now (θ)	294°
Sep first	24.0		Sep last	24.1		Sep. Now (ρ)	24.1"
Mag pri	9.30		Mag sec	11.70		delta mag (ΔM)	2.4		Spectral class	B0.5V (blue-white)
Pri motion ra	-004		Sec motion ra	-003
Pri motion dec	-008		Sec motion dec	-006
Notes

rPM=0.25 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69575	20 11 27 +36 29 57	SEI 971 AB	2015	11	14	14.1	9.30	11.60	2.30
Show		69575	20 11 27 +36 29 57	SLE 954 AC	2015	9	294	24.1	9.30	11.70	2.40		<===
Show		69575	20 11 27 +36 29 57	SLE 954 AD	2015	8	357	22.3	9.30	12.80	3.50

Quadruple system
4 visible stars in this system

Precise pa	294.1		Precise sep	24.076		Constellation	Cygnus		SAO	69575
Tycho2	2683-01190-1		Gaia DR2	2059181250701393280		HD	228199

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20115+3630	SLE 954	AC	1998	3	294	24.1	9.30	11.70	B0.5V	D	201127.26+362956.8
20115+3630	SLE 954	AC	2002	4	294	24.1	9.30	11.70	B0.5V	D	201127.26+362956.8
20115+3630	SLE 954	AC	2015	5	294	24.1	9.30	11.70	B0.5V		201127.26+362956.8

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