19307+2758 RBR  12Ba,Bb

Coord 2000	19307+2758		Discov num	RBR  12		Comp	Ba,Bb		Coord arcsec 2000	19 30 45.40 +27 57 55.0
Date first	2002		Date last	2002		Obs	1
Pa first	108		Pa last	108		P.A. Now (θ)	108°
Sep first	0.4		Sep last	0.4		Sep. Now (ρ)	0.4"
Mag pri	5.10		Mag sec	9.20		delta mag (ΔM)	4.1		Spectral class	B8V+G4V (blue-white/yellow)
Pri motion ra	-002		Sec motion ra
Pri motion dec	-001		Sec motion dec
Notes	N X (See Notes, Dubious double)

Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		87301	19307+2758	BNU 10	Aa,Ab	1978	1995	2	160	0.0	3.37	5.00	1.63
Show		87301	19307+2758	MCA 55	Aa,Ac	1976	2008	58	247	0.3	3.37	5.16	1.79	Y
Show	Albireo	87301	19307+2758	STFA 43	AB	1755	2017	279	54	34.6	3.19	4.68	1.49
Show		87301	19307+2758	WAL 114	AC	1944	2017	7	341	65.6	3.19	10.99	7.80
Show		87301	19307+2758	CTT 17	AD	1894	2017	7	33	108.4	3.19	12.24	9.05
Show		87301	19307+2758	CTT 18	AE	1894	2017	7	207	76.7	3.19	11.81	8.62
Show		87301	19307+2758	SMR 34	AF	1998	2017	3	46	59.2	3.19	12.00	8.81
Show		87301	19307+2758	SMR 34	AG	1998	2012	2	44	161.4	3.19	12.50	9.31
Show		87301	19307+2758	SMR 34	AH	1998	2017	3	119	54.5	3.19	12.50	9.31
Show		87301	19307+2758	SMR 34	AI	1998	2017	3	132	38.0	3.19	12.50	9.31
Show		87301	19307+2758	SMR 34	AJ	1991	2017	4	141	140.6	3.19	10.00	6.81
Show		87301	19307+2758	SMR 34	AK	1998	2012	2	277	142.2	3.19	11.50	8.31
Show		87301	19307+2758	SMR 34	AL	2012	2012	1	269	12.0	3.19	11.50	8.31
Show		87302	19307+2758	RBR 12	Ba,Bb	2002	2002	1	108	0.4	5.10	9.20	4.10		<===

15-fold system
12 visible stars in this system

Precise pa	107.5		Precise sep	0.39		Constellation	Cygnus		SAO	87302
HIP	95951		Tycho2	2133-02963-1		Gaia DR2	2026113339752723456		HD	183914
HR	7418		GC	26956		BD	BD+27 3411		Bayer	Beta 2 Cygni
Bayer name	Bet2 Cyg		Flamsteed	6 Cygni		Flamsteed name	6 Cyg		Distance	122.55
Distance ly	399.76

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19307+2758	RBR 12	Ba,Bb	2002	1	108	0.4	5.09		B8V+G4V	D	193045.40+275755.0

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