19401+1801 J   121AB (Sham)

Coord 2000	19401+1801		Discov num	J   121		Comp	AB		Coord arcsec 2000	19 40 05.78 +18 00 50.2
Date first	1910		Date last	2015		Obs	11
Pa first	200		Pa last	180		P.A. Now (θ)	180°
Sep first	20.0		Sep last	28.9		Sep. Now (ρ)	28.9"
Mag pri	4.37		Mag sec	13.20		delta mag (ΔM)	8.83		Spectral class	G1III (yellow)
Pri motion ra	+015		Sec motion ra	+009
Pri motion dec	-020		Sec motion dec	+017
Notes	N (See Notes)

rPM=1.499 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Sham	105120	19401+1801	J 121	AB	1910	2015	11	180	28.9	4.37	13.20	8.83		<===
Show			19401+1801	J 121	AC	1910	2013	5	244	35.4	4.37	14.90	10.53
Show			19401+1801	WAL 118	AD	1897	2013	7	148	82.6	4.37	11.21	6.84

Quadruple system
4 visible stars in this system

Precise pa	180		Precise sep	28.9		Common name	Sham		Other names	ALSAHM
Constellation	Sagitta		SAO	105120		HD	185758		HR	7479
Bayer	Alpha Sagittae		Bayer name	Alp Sge		Flamsteed	5 Sagittae		Flamsteed name	5 Sge
last precise pa	180		last precise sep	28.9

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19401+1801	J 121	AB	2007	6	180	30.2	4.37	13.20	G1III	N D	194005.78+180050.2
19401+1801	J 121	AB	2009	7	178	29.9	4.37	13.20	G1III	N D	194005.78+180050.2
19401+1801	J 121	AB	2013	9	181	29.5	4.37	13.20	G1III	N	194005.78+180050.2
19401+1801	J 121	AB	2015	11	180	28.9	4.37	13.20	G1III	N	194005.78+180050.2

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