17509-3342 HDO 280 AB (RY Sco)

17^h 50^m 52.34^s -33° 42' 20.4" P.A. 102.00 sep 2.0 mag 8.36,11.50 Sp F6Ib dist. 88.65 pc (289.18 l.y.)

Coord 2000	17509-3342		Discov num	HDO 280		Comp	AB		Coord arcsec 2000	17 50 52.34 -33 42 20.4
Date first	1897		Date last	1964		Obs	4
Pa first	90		Pa last	102.3		P.A. Now (θ)	102.3°
Sep first	3.5		Sep last	2		Sep. Now (ρ)	2"
Mag pri	8.36		Mag sec	11.50		delta mag (ΔM)	3.14		Spectral class	F6Ib (yellow-white)
Pri motion ra	+006		Sec motion ra
Pri motion dec	-005		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

17509-3342 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	RY Sco	209340	17 50 52 -33 42 20	HDO 280 AB	1964	4	102	2.0	8.36	11.50	3.14		<===
Show		209340	17 50 52 -33 42 20	HDO 280 AC	2015	14	219	15.0	8.36	10.63	2.27
Show		209340	17 50 52 -33 42 20	I 9019 AD	2015	5	198	33.7	8.36	13.60	5.24

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	RY Sco		Constellation	Scorpius		SAO	209340		HIP	87345
Tycho2	7381-00346-1		Gaia DR2	4041690364529590144		HD	162102		GC	24216
CD	CD-3312533		CP	CP-33 4644		Distance	88.65		Distance ly	289.18