20078+3617 SEI 903

Coord 2000	20078+3617		Discov num	SEI 903		Comp			Coord arcsec 2000	20 07 51.30 +36 17 46.6
Date first	1895		Date last	2015		Obs	15
Pa first	187		Pa last	187		P.A. Now (θ)	187°
Sep first	11.4		Sep last	12.0		Sep. Now (ρ)	12"
Mag pri	9.42		Mag sec	10.85		delta mag (ΔM)	1.43		Spectral class	A1IV (white)
Pri motion ra	-002		Sec motion ra	-003
Pri motion dec	-001		Sec motion dec	-007
Notes

rPM=0.799 Nature of this double is uncertain.

Precise pa	187.1		Precise sep	11.983		Constellation	Cygnus		Tycho2	2683-01514-1
Gaia DR2	40227204864		HD	227820

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20078+3617	SEI 903		1998	8	187	11.9	9.42	10.85	A1IV	D	200751.30+361746.6
20078+3617	SEI 903		2002	9	187	11.9	9.42	10.85	A1IV	D	200751.30+361746.6
20078+3617	SEI 903		2010	10	187	11.7	9.42	10.85	A1IV		200751.30+361746.6
20078+3617	SEI 903		2015	11	187	12.0	9.42	10.85	A1IV		200751.30+361746.6

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