17145-4913 RST 909 AC

17^h 14^m 32.78^s -49° 12' 50.8" P.A. 205.00 sep 2.7 mag 8.30,12.50 Sp A0IV

Coord 2000	17145-4913		Discov num	RST 909		Comp	AC		Coord arcsec 2000	17 14 32.78 -49 12 50.8
Date first	1930		Date last	2017		Obs	5
Pa first	203		Pa last	205.2		P.A. Now (θ)	205.2°
Sep first	2.5		Sep last	2.651		Sep. Now (ρ)	2.651"
Mag pri	8.30		Mag sec	12.50		delta mag (ΔM)	4.2		Spectral class	A0IV (white)
Pri motion ra	+002		Sec motion ra
Pri motion dec	-023		Sec motion dec
Notes

Nature of this double is uncertain.

17145-4913 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 155511	227731	17 14 33 -49 12 51	RST 909 AB	1969	2	196	0.6	8.30	10.30	2.00
Show		227731	17 14 33 -49 12 51	RST 909 AC	2017	5	205	2.7	8.30	12.50	4.20		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Ara		SAO	227731		Tycho2	8336-00054-1		Gaia DR2	5926445399784334592
HD	155511		DM	CD-4911262