20024+3728 SEI 813

Coord 2000	20024+3728		Discov num	SEI 813		Comp			Coord arcsec 2000	20 02 22.13 +37 27 51.1
Date first	1896		Date last	2015		Obs	11
Pa first	330		Pa last	328		P.A. Now (θ)	328°
Sep first	24.0		Sep last	24.3		Sep. Now (ρ)	24.3"
Mag pri	11.76		Mag sec	12.36		delta mag (ΔM)	0.6		Spectral class	B5 (blue-white)
Pri motion ra	-002		Sec motion ra	-002
Pri motion dec	-004		Sec motion dec	-002
Notes

rPM=0.447 Nature of this double is uncertain.

Precise pa	327.8		Precise sep	24.275		Constellation	Cygnus		Tycho2	2682-00477-1
Gaia DR2	73534783232

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20024+3728	SEI 813		2000	4	328	24.3	12.00	12.50		D	200222.13+372751.1
20024+3728	SEI 813		2002	5	328	24.2	12.00	12.50		D	200222.13+372751.1
20024+3728	SEI 813		2010	6	329	24.5	11.76	12.36	B5		200222.13+372751.1
20024+3728	SEI 813		2015	7	328	24.0	11.76	12.36	B5		200222.13+372751.1

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