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19121+0237
BU 1204 AB

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

19121+0237 BU 1204 AB

19^h 12^m 03.28^s +02° 37' 21.4" P.A. 181.00 sep 0.2 mag 8.00,7.52 Sp B7III dist. 793.65 pc (2588.89 l.y.)

Coord 2000	19121+0237		Discov num	BU 1204		Comp	AB		Coord arcsec 2000	19 12 03.28 +02 37 21.4
Date first	1890		Date last	2019		Obs	58
Pa first	184		Pa last	181.1		P.A. Now (θ)	181.1°
Sep first	0.4		Sep last	0.24		Sep. Now (ρ)	0.24"
Mag pri	8.00		Mag sec	7.52		delta mag (ΔM)	0.48		Spectral class	B7III (blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-010		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

19121+0237 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		124376	19 12 03 +02 37 21	BU 1204 AB	2019	58	181	0.2	8.00	7.52	0.48		<===
Show		124376	19 12 03 +02 37 21	BU 1204 AB,C	2006	7	195	12.5	7.00	11.24	4.24
Show		124376	19 12 03 +02 37 21	BU 1204 AB,D	2006	7	158	20.4	7.00	13.90	6.90
Show		124376	19 12 03 +02 37 21	BU 1204 AB,E	2006	7	317	26.5	7.00	13.10	6.10
Show		124376	19 12 03 +02 37 21	BU 1204 AB,F	2006	7	292	26.8	7.00	13.10	6.10
Show		124376	19 12 03 +02 37 21	STF 2476 AB,G	2006	20	211	29.9	7.00	11.12	4.12

Septuple system
8 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Aquila		SAO	124376		HIP	94331		Tycho2	0467-02562-1
Gaia DR2	4268167803943937152		HD	179343		GC	26447		BD	BD+02 3815
Distance	793.65		Distance ly	2588.89