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Doubles in session

Current system

19121+0237
BU 1204 AB,D

Selections

Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19121+0237 BU 1204 AB,D

19^h 12^m 03.28^s +02° 37' 21.4" P.A. 158.00 sep 20.4 mag 7.00,13.90 Sp B7III

Coord 2000	19121+0237		Discov num	BU 1204		Comp	AB,D		Coord arcsec 2000	19 12 03.28 +02 37 21.4
Date first	1890		Date last	2006		Obs	7
Pa first	160		Pa last	158.1		P.A. Now (θ)	158.1°
Sep first	21.2		Sep last	20.39		Sep. Now (ρ)	20.39"
Mag pri	7.00		Mag sec	13.90		delta mag (ΔM)	6.9		Spectral class	B7III (blue-white)
Pri motion ra	-003		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

Gaia DR2

4268167803943937152