17311-6041 EHR 15 AB

Coord 2000	17311-6041		Discov num	EHR  15		Comp	AB		Coord arcsec 2000	17 31 05.91 -60 41 01.8
Date first	2009		Date last	2009		Obs	1
Pa first	67		Pa last	67.2		P.A. Now (θ)	67.2°
Sep first	3.1		Sep last	3.123		Sep. Now (ρ)	3.123"
Mag pri	3.70		Mag sec	14.20		delta mag (ΔM)	10.5		Spectral class	B8Vn (blue-white)
Pri motion ra	-054		Sec motion ra
Pri motion dec	-099		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		253945	17 31 06 -60 41 02	EHR 15 AB	2009	1	67	3.1	3.70	14.20	10.50		<===
Show		253945	17 31 06 -60 41 02	EHR 15 AC	2009	1	51	8.6	3.70	13.00	9.30
Show		253945	17 31 06 -60 41 02	EHR 15 AD	2009	1	62	12.3	3.70	11.90	8.20
Show	Del Ara	253945	17 31 06 -60 41 02	HJ 4951 AE	2016	7	324	50.4	3.64	10.96	7.32

Quintuple system
5 estimated visually detectable stars in this system

Constellation	Ara		SAO	253945		HIP	85727		Tycho2	9053-04118-1
Gaia DR2	5912398348427886976		HD	158094		HR	6500		GC	23681
CP	CP-60 6842		Bayer	Delta Arae		Bayer name	Del Ara		FK5	648
Distance	60.68		Distance ly	197.94		Bayer greek	δ Ara