20280+3008 BU   62AC

Coord 2000	20280+3008		Discov num	BU   62		Comp	AC		Coord arcsec 2000	20 28 00.64 +30 08 02.6
Date first	1894		Date last	2015		Obs	12
Pa first	180		Pa last	179		P.A. Now (θ)	179°
Sep first	39.0		Sep last	38.2		Sep. Now (ρ)	38.2"
Mag pri	8.70		Mag sec	10.65		delta mag (ΔM)	1.95		Spectral class	A0 (white)
Pri motion ra	-005		Sec motion ra	-001
Pri motion dec	-005		Sec motion dec	+002
Notes

rPM=1.14 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88708	20 28 01 +30 08 03	BU 62 AB	2016	25	133	1.2	8.70	9.79	1.09
Show		88708	20 28 01 +30 08 03	BU 62 AC	2015	12	179	38.2	8.70	10.65	1.95		<===
Show		88708	20 28 01 +30 08 03	BU 62 AD	2015	8	267	46.1	8.70	12.81	4.11

Quadruple system
4 visible stars in this system

Precise pa	178.5		Precise sep	38.164		Constellation	Cygnus		SAO	88708
Tycho2	2685-01097-1		Gaia DR2	1860930439418746880		HD	195051

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20280+3008	BU 62	AC	1999	8	179	38.1	8.70	10.65		D	202800.64+300802.6
20280+3008	BU 62	AC	2009	9	179	38.0	8.70	10.65		D	202800.64+300802.6
20280+3008	BU 62	AC	2015	12	179	38.2	8.70	10.65	A0		202800.64+300802.6

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