17182-6027 CVN  28Aa,Ab

Coord 2000	17182-6027		Discov num	CVN  28		Comp	Aa,Ab		Coord arcsec 2000	17 18 14.64 -60 27 27.5
Date first	2006		Date last	2008		Obs	3
Pa first	193		Pa last	196		P.A. Now (θ)	196°
Sep first	0.2		Sep last	0.2		Sep. Now (ρ)	0.2"
Mag pri	7.53		Mag sec	10.00		delta mag (ΔM)	2.47		Spectral class	G8V (yellow)
Pri motion ra	-057		Sec motion ra
Pri motion dec	-090		Sec motion dec
Notes	K (K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			17 18 15 -60 27 28	CVN 28 Aa,Ab	2008	3	196	0.2	7.53	10.00	2.47		<===
Show	V857 Ara		17 18 15 -60 27 28	CVN 28 AB	2007	1	315	3.9	7.53	19.30	11.77
Show			17 18 15 -60 27 28	CVN 28 AC	2007	1	103	5.9	7.53	18.30	10.77
Show			17 18 15 -60 27 28	CVN 28 AD	2007	1	68	7.3	7.53	17.50	9.97
Show			17 18 15 -60 27 28	CVN 28 AE	2007	1	195	10.8	7.53	19.60	12.07
Show			17 18 15 -60 27 28	CVN 28 AF	2007	1	71	11.6	7.53	20.30	12.77
Show			17 18 15 -60 27 28	CVN 28 AG	2007	1	207	12.0	7.53	20.30	12.77
Show			17 18 15 -60 27 28	CVN 28 AH	2015	3	201	12.2	7.53	15.70	8.17
Show			17 18 15 -60 27 28	CVN 28 AI	2015	2	50	15.4	7.53	18.40	10.87

Decuple system
9 visible stars in this system

Precise pa	195.6		Precise sep	0.21		Var name	V857 Ara		Constellation	Ara
HIP	84642		Tycho2	9052-01117-1		Gaia DR2	5914014149479588096		HD	155915
CP	CP-60 6759		Distance	58.93		Distance ly	192.23

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17182-6027	CVN 28	Aa,Ab	2007	1	191	0.2	7.53	10.00	G8V	K	171814.64-602727.5
17182-6027	CVN 28	Aa,Ab	2008	3	196	0.2	7.53	10.00	G8V	K	171814.64-602727.5

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