20281+3847 ALI 933

Coord 2000	20281+3847		Discov num	ALI 933		Comp			Coord arcsec 2000	20 28 04.77 +38 46 36.7
Date first	1928		Date last	2015		Obs	9
Pa first	255		Pa last	254		P.A. Now (θ)	254°
Sep first	13.7		Sep last	13.8		Sep. Now (ρ)	13.8"
Mag pri	12.31		Mag sec	12.60		delta mag (ΔM)	0.29		Spectral class
Pri motion ra	+006		Sec motion ra	+000
Pri motion dec	+002		Sec motion dec	+000
Notes

rPM=1 This double is not physical.

Precise pa	254.4		Precise sep	13.774		Constellation	Cygnus		Tycho2	3152-00559-1
Gaia DR2	09235895040

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20281+3847	ALI 933		1998	2	255	13.7	12.31	12.60		D	202804.77+384636.7
20281+3847	ALI 933		2002	3	255	13.7	12.31	12.60		D	202804.77+384636.7
20281+3847	ALI 933		2010	4	255	13.9	12.31	12.60			202804.77+384636.7
20281+3847	ALI 933		2015	5	254	13.8	12.31	12.60			202804.77+384636.7

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