16539-1854 DON 815 AC

16^h 53^m 56.89^s -18° 54' 20.7" P.A. 320.00 sep 9.3 mag 8.83,13.20 Sp A2IV/V

Coord 2000	16539-1854		Discov num	DON 815		Comp	AC		Coord arcsec 2000	16 53 56.89 -18 54 20.7
Date first	1933		Date last	2015		Obs	4
Pa first	318		Pa last	320.3		P.A. Now (θ)	320.3°
Sep first	9.1		Sep last	9.293		Sep. Now (ρ)	9.293"
Mag pri	8.83		Mag sec	13.20		delta mag (ΔM)	4.37		Spectral class	A2IV/V (white)
Pri motion ra	-003		Sec motion ra	-009
Pri motion dec	-001		Sec motion dec	-003
Notes

rPM=0.667

Nature of this double is uncertain.

16539-1854 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		160150	16 53 57 -18 54 21	DON 815 AB	2016	5	221	2.7	8.83	14.00	5.17
Show		160150	16 53 57 -18 54 21	DON 815 AC	2015	4	320	9.3	8.83	13.20	4.37		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Ophiuchus		SAO	160150		Tycho2	6226-01514-1		Gaia DR2	4132096123183061248
HD	152419