17040-5105 R 289 BF

Coord 2000	17040-5105		Discov num	R   289		Comp	BF		Coord arcsec 2000	17 03 59.55 -51 04 57.4
Date first	1872		Date last	2015		Obs	10
Pa first	189		Pa last	187.7		P.A. Now (θ)	187.7°
Sep first	49.3		Sep last	59.855		Sep. Now (ρ)	59.855"
Mag pri	8.81		Mag sec	10.91		delta mag (ΔM)	2.1		Spectral class	B2V (blue-white)
Pri motion ra	+005		Sec motion ra	+000
Pri motion dec	-002		Sec motion dec	-004
Notes	N U (See Notes, Proper motion indicates non-physical)

rPM=1 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 153772	244398	17 04 01 -51 05 01	DUN 212 AB	2015	21	283	16.2	8.35	8.81	0.46
Show			17 04 01 -51 05 01	R 289 AC	2015	9	241	13.3	8.35	11.00	2.65
Show			17 04 01 -51 05 01	R 289 AD	2015	9	151	28.0	8.35	11.64	3.29
Show			17 04 01 -51 05 01	R 289 AE	2015	9	254	41.6	8.35	10.30	1.95
Show			17 04 01 -51 05 01	R 289 AF	2015	10	203	60.5	8.35	10.91	2.56
Show		244398	17 03 60 -51 04 57	R 289 BC	2015	10	158	11.0	8.81	11.00	2.19
Show		244398	17 03 60 -51 04 57	R 289 BE	2015	9	238	28.6	8.81	11.41	2.60
Show		244398	17 03 60 -51 04 57	R 289 BF	2015	10	188	59.9	8.81	10.91	2.10		<===
Show			17 03 60 -51 05 08	R 289 CG	2015	5	157	10.2	11.00	13.00	2.00
Show			17 03 60 -51 05 08	R 289 CH	2015	6	232	7.1	11.00	13.50	2.50
Show			17 03 57 -51 05 12	R 289 ED	2015	7	104	55.3	11.41	11.64	0.23

Octuple system
8 estimated visually detectable stars in this system

Constellation	Ara		SAO	244398		HIP	83506		Tycho2	8340-02544-1
Gaia DR2	5937998243333788416		HD	153771		CD	CD-5010977		CP	CP-50 9812
Distance	101.32		Distance ly	330.51