18427+0742 HEI 870 AB

Coord 2000	18427+0742		Discov num	HEI 870		Comp	AB		Coord arcsec 2000	18 42 41.76 +07 41 59.5
Date first	1989		Date last	2015		Obs	6
Pa first	347		Pa last	347.1		P.A. Now (θ)	347.1°
Sep first	1.3		Sep last	1.651		Sep. Now (ρ)	1.651"
Mag pri	12.00		Mag sec	12.60		delta mag (ΔM)	0.6		Spectral class
Pri motion ra	-000		Sec motion ra	+000
Pri motion dec	-003		Sec motion dec	-001
Notes

rPM=0.667 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			18 42 42 +07 41 60	HEI 870 Aa,Ab	2013	2	246	0.9	12.80	12.80	0.00
Show			18 42 42 +07 41 60	HEI 870 AB	2015	6	347	1.7	12.00	12.60	0.60		<===

Triple system
2 estimated visually detectable stars in this system

Constellation

Ophiuchus