15169-6057 SNA 39 Aab,c

Coord 2000	15169-6057		Discov num	SNA  39		Comp	Aab,c		Coord arcsec 2000	15 16 56.90 -60 57 26.1
Date first	2012		Date last	2012		Obs	1
Pa first	132		Pa last	131.9		P.A. Now (θ)	131.9°
Sep first	0.0		Sep last	0.004		Sep. Now (ρ)	0.004"
Mag pri	5.40		Mag sec	7.20		delta mag (ΔM)	1.8		Spectral class	O7IV+B (blue/blue-white)
Pri motion ra	-002		Sec motion ra
Pri motion dec	-003		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		253084	15 16 57 -60 57 26	SNA 39 Aab,c	2012	1	132	0.0	5.40	7.20	1.80		<===
Show	Del Cir	253084	15 16 57 -60 57 26	HDO 245 AB	2016	7	279	53.9	5.07	12.87	7.80

Quadruple system
2 estimated visually detectable stars in this system

Var name	NSV6998 Cir		Constellation	Circinus		SAO	253084		HIP	74778
Tycho2	9021-02243-1		Gaia DR2	5875491419647525248		HD	135240		HR	5664
GC	20507		CD	CD-60 5539		CP	CP-60 5701		Bayer	Delta Circini
Bayer name	Del Cir		Distance	1123.6		Distance ly	3665.18		Bayer greek	δ Cir