20059+3542 SEI 854

Coord 2000	20059+3542		Discov num	SEI 854		Comp			Coord arcsec 2000	20 05 52.65 +35 42 24.5
Date first	1896		Date last	2016		Obs	11
Pa first	117		Pa last	108		P.A. Now (θ)	108°
Sep first	11.7		Sep last	13.0		Sep. Now (ρ)	13"
Mag pri	9.70		Mag sec	11.90		delta mag (ΔM)	2.2		Spectral class	B1.5IV (blue-white)
Pri motion ra	-004		Sec motion ra	+002
Pri motion dec	-007		Sec motion dec	-003
Notes

rPM=0.894 This double is not physical.

Precise pa	108.4		Precise sep	13.041		Constellation	Cygnus		SAO	69399
Gaia DR2	55233453824

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20059+3542	SEI 854		1998	4	109	12.9	9.70	11.90		D	200552.65+354224.5
20059+3542	SEI 854		2002	5	109	12.9	9.70	11.90		D	200552.65+354224.5
20059+3542	SEI 854		2010	6	110	13.8	9.70	11.90	B1.5IV		200552.65+354224.5
20059+3542	SEI 854		2016	6	108	13.0	9.70	11.90	B1.5IV		200552.65+354224.5

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