20156+1958 ROE 101AC

Coord 2000	20156+1958		Discov num	ROE 101		Comp	AC		Coord arcsec 2000	20 15 36.94 +19 58 29.5
Date first	1916		Date last	2015		Obs	10
Pa first	190		Pa last	187		P.A. Now (θ)	187°
Sep first	44.9		Sep last	40.9		Sep. Now (ρ)	40.9"
Mag pri	8.38		Mag sec	12.34		delta mag (ΔM)	3.96		Spectral class	G8III (yellow)
Pri motion ra	-030		Sec motion ra	+002
Pri motion dec	-050		Sec motion dec	-018
Notes	N U (See Notes, Proper motion indicates non-physical)

rPM=0.776 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105904	20 15 37 +19 58 30	ROE 101 AB	2015	16	53	12.7	8.38	9.60	1.22
Show		105904	20 15 37 +19 58 30	ROE 101 AC	2015	10	187	40.9	8.38	12.34	3.96		<===
Show		105904	20 15 37 +19 58 30	ROE 101 AD	2015	11	289	11.9	8.38	11.30	2.92
Show		105904	20 15 37 +19 58 30	ROE 101 AE	2015	9	59	46.1	8.38	13.76	5.38

Quintuple system
5 visible stars in this system

Precise pa	186.9		Precise sep	40.935		Constellation	Sagitta		SAO	105904
Tycho2	1626-00831-1		Gaia DR2	1828514504461110784		HD	192714

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20156+1958	ROE 101	AC	2000	4	187	41.2	8.38	11.70	G8III	D	201536.94+195829.5
20156+1958	ROE 101	AC	2001	5	187	41.7	8.38	11.70	G8III	NUD	201536.94+195829.5
20156+1958	ROE 101	AC	2015	6	187	41.0	8.38	12.34	G8III	NU	201536.94+195829.5

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