00310+5539 ES  116

Coord 2000	00310+5539		Discov num	ES  116		Comp			Coord arcsec 2000	00 31 01.34 +55 39 10.2
Date first	1902		Date last	2015		Obs	26
Pa first	256		Pa last	258		P.A. Now (θ)	258°
Sep first	7.7		Sep last	7.4		Sep. Now (ρ)	7.4"
Mag pri	9.78		Mag sec	9.87		delta mag (ΔM)	0.09		Spectral class	B9 (blue-white)
Pri motion ra	+000		Sec motion ra	-010
Pri motion dec	-003		Sec motion dec	-003
Notes

rPM=0.958 This double is not physical.

Precise pa	257.7		Precise sep	7.409		Constellation	Cassiopeia		SAO	21471
Tycho2	3658-00658-1		Gaia DR2	421265240102120960		HD	232208

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00310+5539	ES 116		2003	21	256	7.4	9.78	9.87	B9	D	003101.34+553910.2
00310+5539	ES 116		2015	24	258	7.4	9.78	9.87	B9		003101.34+553910.2

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