18152-2023 SNA 83 AC (16 Sgr)

Coord 2000	18152-2023		Discov num	SNA  83		Comp	AC		Coord arcsec 2000	18 15 12.97 -20 23 16.7
Date first	2012		Date last	2012		Obs	1
Pa first	27		Pa last	27.2		P.A. Now (θ)	27.2°
Sep first	5.9		Sep last	5.89		Sep. Now (ρ)	5.89"
Mag pri	5.88		Mag sec	13.43		delta mag (ΔM)	7.55		Spectral class	O9.5II (blue)
Pri motion ra	+005		Sec motion ra
Pri motion dec	-003		Sec motion dec
Notes	N K (See Notes, 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 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		186544	18 15 13 -20 23 17	CHR 255 Aa,Ab	2019	9	156	0.1	6.50	6.90	0.40
Show		186544	18 15 13 -20 23 17	BU 286 AB	2015	12	216	6.1	5.95	13.00	7.05
Show	16 Sgr	186544	18 15 13 -20 23 17	SNA 83 AC	2012	1	27	5.9	5.88	13.43	7.55		<===
Show		186544	18 15 13 -20 23 17	SNA 83 AD	2012	1	281	6.5	5.88	13.04	7.16
Show		186544	18 15 13 -20 23 17	SNA 83 AE	2012	1	242	7.3	5.88	13.20	7.32

Sextuple system
5 estimated visually detectable stars in this system

Name	16 Sgr		Constellation	Sagittarius		SAO	186544		HIP	89440
Tycho2	6272-00089-1		Gaia DR2	4094031138050641408		HD	167263		HR	6823
GC	24895		ADS	11191		BD	BD-20 5055		Flamsteed	16 Sagittarii
Flamsteed name	16 Sgr		Distance	2325.58		Distance ly	7586.04