20339+4034 AG  409

Coord 2000	20339+4034		Discov num	AG  409		Comp			Coord arcsec 2000	20 33 54.23 +40 33 52.7
Date first	1892		Date last	2015		Obs	26
Pa first	267		Pa last	267		P.A. Now (θ)	267°
Sep first	9.3		Sep last	9.8		Sep. Now (ρ)	9.8"
Mag pri	9.40		Mag sec	9.92		delta mag (ΔM)	0.52		Spectral class	F5 (yellow-white)
Pri motion ra	+038		Sec motion ra	+038
Pri motion dec	+023		Sec motion dec	+020
Notes	T (Parallax indicates physical)

Visually invisible, K-band or other infrared star rPM=0.068 (< 0.3, Physical double) This double is physical.

Precise pa	266.5		Precise sep	9.822		Constellation	Cygnus		SAO	49798
Tycho2	3157-01013-1		Gaia DR2	27918023424

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20339+4034	AG 409		2004	19	267	9.9	9.40	9.92	F5	D	203354.23+403352.7
20339+4034	AG 409		2010	21	267	9.1	9.40	9.92	F5		203354.23+403352.7
20339+4034	AG 409		2015	22	267	9.8	9.40	9.92	F5		203354.23+403352.7

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