20008+2949 BU  439AC

Coord 2000	20008+2949		Discov num	BU  439		Comp	AC		Coord arcsec 2000	20 00 46.25 +29 49 19.4
Date first	1907		Date last	2015		Obs	8
Pa first	195		Pa last	201		P.A. Now (θ)	201°
Sep first	49.6		Sep last	38.5		Sep. Now (ρ)	38.5"
Mag pri	7.89		Mag sec	12.25		delta mag (ΔM)	4.36		Spectral class	G0V (yellow)
Pri motion ra	+016		Sec motion ra	+003
Pri motion dec	-115		Sec motion dec	-004
Notes

rPM=0.963 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88066	20008+2949	BU 439	AB	1876	2015	17	222	3.3	7.89	12.70	4.81
Show		88066	20008+2949	BU 439	AC	1907	2015	8	201	38.5	7.89	12.25	4.36		<===
Show		88066	20008+2949	FOX9033	AD	1913	2015	3	51	11.5	7.89	12.00	4.11
Show		88066	20008+2949	FOX9033	AE	1913	2002	3	122	23.2	7.89	14.40	6.51

Quintuple system
5 visible stars in this system

Precise pa	200.5		Precise sep	38.465		Constellation	Cygnus		SAO	88066
Tycho2	2153-02502-1		Gaia DR2	13022898048		HD	189796

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20008+2949	BU 439	AC	1913	2	195	49.5	7.89	12.00			200046.25+294919.4
20008+2949	BU 439	AC	2002	5	200	39.5	7.89	12.25	G0V		200046.25+294919.4
20008+2949	BU 439	AC	2014	6	201	37.7	7.89	12.25	G0V		200046.25+294919.4
20008+2949	BU 439	AC	2015	8	201	38.5	7.89	12.25	G0V		200046.25+294919.4

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