19561-3208 UC 4054AB

Coord 2000	19561-3208		Discov num	UC 4054		Comp	AB		Coord arcsec 2000	19 56 04.38 -32 07 37.7
Date first	1954		Date last	2015		Obs	9
Pa first	316		Pa last	316		P.A. Now (θ)	316°
Sep first	26.3		Sep last	26.3		Sep. Now (ρ)	26.3"
Mag pri	11.59		Mag sec	13.23		delta mag (ΔM)	1.64		Spectral class	K9.1V+M4 (yellow-orange/red)
Pri motion ra	+032		Sec motion ra	+035
Pri motion dec	-065		Sec motion dec	-060
Notes	V (Proper motion indicates physical)

Visually invisible, K-band or other infrared star rPM=0.08 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19561-3208	UC 4054	AB	1954	2015	9	316	26.3	11.59	13.23	1.64		<===
Show			19561-3208	BWL 53	Ba,Bb	2012	2019	5	280	0.1	8.70	9.90	1.20

Triple system
2 visible stars in this system

Precise pa	315.9		Precise sep	26.328		Constellation	Sagittarius		Tycho2	7443-01102-1
Gaia DR2	24874108288

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19561-3208	UC 4054	AB	1999	2	316	26.3	11.59	13.23		V	195604.38-320737.7
19561-3208	UC 4054	AB	2010	8	316	26.3	11.59	13.23		V	195604.38-320737.7
19561-3208	UC 4054	AB	2015	9	316	26.3	11.59	13.23	K9.1V+M4	V	195604.38-320737.7

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