17521-2654 B 2844 AB,C (HD 162437)

17^h 52^m 04.73^s -26° 53' 41.3" P.A. 160.00 sep 17.6 mag 8.34,9.81 Sp B5III

Coord 2000	17521-2654		Discov num	B 2844		Comp	AB,C		Coord arcsec 2000	17 52 04.73 -26 53 41.3
Date first	1912		Date last	1999		Obs	7
Pa first	157		Pa last	159.5		P.A. Now (θ)	159.5°
Sep first	17.4		Sep last	17.571		Sep. Now (ρ)	17.571"
Mag pri	8.34		Mag sec	9.81		delta mag (ΔM)	1.47		Spectral class	B5III (blue-white)
Pri motion ra	+002		Sec motion ra	-002
Pri motion dec	-003		Sec motion dec	-007
Notes

rPM=0.777

Nature of this double is uncertain.

17521-2654 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		185863	17 52 05 -26 53 41	I 1343 AB	1989	10	265	0.2	9.30	9.40	0.10
Show	HD 162437	185863	17 52 05 -26 53 41	B 2844 AB,C	1999	7	160	17.6	8.34	9.81	1.47		<===

Triple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 162437		Constellation	Sagittarius		SAO	185863		Tycho2	6849-00750-1
Gaia DR2	4063776288864195456		HD	162437