20309+5747 TDT2333

Coord 2000	20309+5747		Discov num	TDT2333		Comp			Coord arcsec 2000	20 30 53.76 +57 46 42.9
Date first	1991		Date last	2015		Obs	3
Pa first	139		Pa last	138		P.A. Now (θ)	138°
Sep first	2.3		Sep last	2.4		Sep. Now (ρ)	2.4"
Mag pri	10.30		Mag sec	12.19		delta mag (ΔM)	1.89		Spectral class
Pri motion ra	-009		Sec motion ra	-009
Pri motion dec	+007		Sec motion dec	+007
Notes

Nature of this double is uncertain.

Precise pa	138		Precise sep	2.422		Constellation	Cygnus		Tycho2	3958-00345-1
Gaia DR2	48560554496

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20309+5747	TDT2333		2003	2	140	2.5	10.30	12.19			203053.76+574642.9
20309+5747	TDT2333		2015	3	138	2.4	10.30	12.19			203053.76+574642.9

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