20209+1948 HJ 2954AB

Coord 2000	20209+1948		Discov num	HJ 2954		Comp	AB		Coord arcsec 2000	20 20 50.62 +19 47 52.1
Date first	1831		Date last	2018		Obs	12
Pa first	300		Pa last	303		P.A. Now (θ)	303°
Sep first	1.5		Sep last	3.1		Sep. Now (ρ)	3.1"
Mag pri	10.47		Mag sec	10.54		delta mag (ΔM)	0.07		Spectral class	A3 (white)
Pri motion ra	+003		Sec motion ra	-062
Pri motion dec	-012		Sec motion dec	+034
Notes

rPM=1.126 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 20 51 +19 47 52	HJ 2954 AB	2018	12	303	3.1	10.47	10.54	0.07		<===
Show			20 20 51 +19 47 54	HJ 2954 BC	2015	5	292	23.1	10.54	13.00	2.46

Triple system
3 visible stars in this system

Precise pa	302.6		Precise sep	3.075		Constellation	Sagitta		Tycho2	1639-02174-2
Gaia DR2	1816513468172444672

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20209+1948	HJ 2954	AB	2000	9	304	3.1	10.47	10.54	A3	D	202050.62+194752.1
20209+1948	HJ 2954	AB	2001	10	303	3.0	10.47	10.54	A3	D	202050.62+194752.1
20209+1948	HJ 2954	AB	2009	11	303	3.0	10.47	10.54	A3	D	202050.62+194752.1
20209+1948	HJ 2954	AB	2018	12	303	3.1	10.47	10.54	A3		202050.62+194752.1

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