18407+1749 ROE 88 AC

18^h 40^m 41.38^s +17° 49' 44.4" P.A. 330.00 sep 35.5 mag 12.60,13.50

Coord 2000	18407+1749		Discov num	ROE 88		Comp	AC		Coord arcsec 2000	18 40 41.38 +17 49 44.4
Date first	1915		Date last	2015		Obs	10
Pa first	330		Pa last	329.8		P.A. Now (θ)	329.8°
Sep first	40.1		Sep last	35.501		Sep. Now (ρ)	35.501"
Mag pri	12.60		Mag sec	13.50		delta mag (ΔM)	0.9		Spectral class
Pri motion ra	-006		Sec motion ra	-002
Pri motion dec	+009		Sec motion dec	+010
Notes

rPM=0.381

Nature of this double is uncertain.

18407+1749 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			18 40 41 +17 49 44	ROE 88 AB	2015	10	131	8.4	12.60	12.60	0.00
Show			18 40 41 +17 49 44	ROE 88 AC	2015	10	330	35.5	12.60	13.50	0.90		<===
Show			18 40 41 +17 49 44	WLY 11 AD	2015	8	322	14.2	12.60	13.90	1.30

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Hercules

Gaia DR2

4511972653240666368