20100+1021 A  1199AC

Coord 2000	20100+1021		Discov num	A  1199		Comp	AC		Coord arcsec 2000	20 09 59.56 +10 20 59.0
Date first	1915		Date last	2015		Obs	4
Pa first	294		Pa last	293		P.A. Now (θ)	293°
Sep first	49.3		Sep last	50.6		Sep. Now (ρ)	50.6"
Mag pri	9.14		Mag sec	12.94		delta mag (ΔM)	3.8		Spectral class	A0V (white)
Pri motion ra	+015		Sec motion ra	-009
Pri motion dec	-009		Sec motion dec	+003
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.534 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105774	20100+1021	A 1199	AB	1905	2015	21	244	3.0	9.14	11.40	2.26
Show		105774	20100+1021	A 1199	AC	1915	2015	4	293	50.6	9.14	12.94	3.80		<===

Triple system
3 visible stars in this system

Precise pa	293.2		Precise sep	50.638		Constellation	Aquila		SAO	105774
Tycho2	1076-02109-1		Gaia DR2	50384691200		HD	191515

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20100+1021	A 1199	AC	2000	2	293	50.4	9.14	12.10		N D	200959.56+102059.0
20100+1021	A 1199	AC	2001	3	293	50.4	9.14	12.10		N D	200959.56+102059.0
20100+1021	A 1199	AC	2015	4	293	50.6	9.14	12.94	A0V	N	200959.56+102059.0

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