18061-2412 SNA 81 Aa,Ab

Coord 2000	18061-2412		Discov num	SNA  81		Comp	Aa,Ab		Coord arcsec 2000	18 06 04.67 -24 11 43.8
Date first	2013		Date last	2013		Obs	1
Pa first	116		Pa last	116.2		P.A. Now (θ)	116.2°
Sep first	0.0		Sep last	0.031		Sep. Now (ρ)	0.031"
Mag pri	7.30		Mag sec	10.10		delta mag (ΔM)	2.8		Spectral class	O8V (blue)
Pri motion ra	+002		Sec motion ra
Pri motion dec	-004		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		186268	18 06 05 -24 11 44	SNA 81 Aa,Ab	2013	1	116	0.0	7.30	10.10	2.80		<===
Show	HD 165246	186268	18 06 05 -24 11 44	B 376 AB	2013	3	97	1.9	7.20	11.20	4.00
Show		186268	18 06 05 -24 11 44	SNA 81 AC	2012	2	225	6.6	7.23	12.89	5.66
Show		186268	18 06 05 -24 11 44	SNA 81 AD	2012	1	8	7.9	7.23	13.21	5.98

Quintuple system
4 estimated visually detectable stars in this system

Constellation	Sagittarius		SAO	186268		Tycho2	6842-01179-1		Gaia DR2	4066063754109686016
HD	165246