18152-2044 SNA 82 AC

Coord 2000	18152-2044		Discov num	SNA  82		Comp	AC		Coord arcsec 2000	18 15 12.91 -20 43 41.8
Date first	2012		Date last	2012		Obs	1
Pa first	356		Pa last	356.1		P.A. Now (θ)	356.1°
Sep first	2.3		Sep last	2.31		Sep. Now (ρ)	2.31"
Mag pri	5.16		Mag sec	12.91		delta mag (ΔM)	7.75		Spectral class	O9.7Iab (blue)
Pri motion ra	+003		Sec motion ra
Pri motion dec	-001		Sec motion dec
Notes	N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		186543	18 15 13 -20 43 42	SNA 82 Aa,Ab	2012	4	203	0.0	5.30	8.40	3.10
Show	15 Sgr	186543	18 15 13 -20 43 42	TOK 59 AB	2013	5	77	1.3	5.40	10.60	5.20
Show		186543	18 15 13 -20 43 42	SNA 82 AC	2012	1	356	2.3	5.16	12.91	7.75		<===
Show		186543	18 15 13 -20 43 42	SNA 82 AD	2012	1	108	7.1	5.16	12.18	7.02

Quintuple system
4 estimated visually detectable stars in this system

Constellation	Sagittarius		SAO	186543		HIP	89439		Tycho2	6276-01023-1
Gaia DR2	4093968702062993664		HD	167264		HR	6822		GC	24893
BD	BD-20 5054		Flamsteed	15 Sagittarii		Flamsteed name	15 Sgr		Distance	10000
Distance ly	32620