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18453+4005
ROE 50 AB

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18453+4005 ROE 50 AB

18^h 45^m 19.87^s +40° 04' 58.4" P.A. 282.00 sep 4.7 mag 10.80,11.70

Coord 2000	18453+4005		Discov num	ROE 50		Comp	AB		Coord arcsec 2000	18 45 19.87 +40 04 58.4
Date first	1894		Date last	2015		Obs	11
Pa first	287		Pa last	282		P.A. Now (θ)	282°
Sep first	3.4		Sep last	4.692		Sep. Now (ρ)	4.692"
Mag pri	10.80		Mag sec	11.70		delta mag (ΔM)	0.9		Spectral class
Pri motion ra	-013		Sec motion ra
Pri motion dec	-074		Sec motion dec
Notes

Nature of this double is uncertain.

18453+4005 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			18 45 20 +40 04 58	ROE 50 AB	2015	11	282	4.7	10.80	11.70	0.90		<===
Show			18 45 20 +40 04 58	ROE 50 AC	2015	7	120	26.2	10.66	12.53	1.87
Show			18 45 20 +40 04 58	ROE 50 AD	2015	7	253	96.6	10.66	12.91	2.25
Show			18 45 20 +40 04 58	ROE 50 AE	2015	7	196	93.6	10.66	13.89	3.23
Show			18 45 20 +40 04 58	ROE 50 AF	2015	7	114	35.7	10.80	12.70	1.90
Show			18 45 20 +40 04 58	BKO 53 AG	2015	6	156	51.7	10.66	15.21	4.55
Show			18 45 20 +40 04 58	BKO 53 AH	2015	6	301	35.7	10.66	15.60	4.94
Show			18 45 22 +40 04 44	ROE 50 CF	2015	10	99	9.9	11.20	12.70	1.50

Octuple system
8 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Lyra

Tycho2

3122-00298-1

Gaia DR2

2098250579624811136