20156+1958 ROE 101AD

Coord 2000	20156+1958		Discov num	ROE 101		Comp	AD		Coord arcsec 2000	20 15 36.94 +19 58 29.5
Date first	1916		Date last	2015		Obs	11
Pa first	270		Pa last	289		P.A. Now (θ)	289°
Sep first	14.0		Sep last	11.9		Sep. Now (ρ)	11.9"
Mag pri	8.38		Mag sec	11.30		delta mag (ΔM)	2.92		Spectral class	G8III (yellow)
Pri motion ra	-030		Sec motion ra	-007
Pri motion dec	-050		Sec motion dec	-001
Notes	N U (See Notes, Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=0.928 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105904	20156+1958	ROE 101	AB	1895	2015	16	53	12.7	8.38	9.60	1.22
Show		105904	20156+1958	ROE 101	AC	1916	2015	10	187	40.9	8.38	12.34	3.96
Show		105904	20156+1958	ROE 101	AD	1916	2015	11	289	11.9	8.38	11.30	2.92		<===
Show		105904	20156+1958	ROE 101	AE	1916	2015	9	59	46.1	8.38	13.76	5.38

Quintuple system
5 visible stars in this system

Precise pa	288.7		Precise sep	11.918		Constellation	Sagitta		SAO	105904
Tycho2	1626-00831-1		Gaia DR2	04461110784		HD	192714

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20156+1958	ROE 101	AD	2000	3	287	11.9	8.38	11.30	G8III	D	201536.94+195829.5
20156+1958	ROE 101	AD	2011	4	289	12.0	8.38	11.30	G8III	NUD	201536.94+195829.5
20156+1958	ROE 101	AD	2013	6	288	11.9	8.38	11.30	G8III	NU	201536.94+195829.5
20156+1958	ROE 101	AD	2015	7	289	11.9	8.38	11.30	G8III	NU	201536.94+195829.5

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