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00311+5648
ES 2

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

00311+5648 ES 2

00^h 31^m 08.78^s +56° 47' 40.5" P.A. 113.00 sep 5.9 mag 8.97,9.50 Sp F0

Coord 2000	00311+5648		Discov num	ES 2		Comp			Coord arcsec 2000	00 31 08.78 +56 47 40.5
Date first	1892		Date last	2020		Obs	31
Pa first	113		Pa last	113		P.A. Now (θ)	113°
Sep first	6.3		Sep last	5.9		Sep. Now (ρ)	5.9"
Mag pri	8.97		Mag sec	9.50		delta mag (ΔM)	0.53		Spectral class	F0 (yellow-white)
Pri motion ra	+041		Sec motion ra	+037
Pri motion dec	-016		Sec motion dec	-025
Notes	N (See Notes)

rPM=0.221 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	112.7		Precise sep	5.932		Constellation	Cassiopeia		Tycho2	3662-01089-1
Gaia DR2	421792279827752192		HD	236444

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00311+5648	ES 2		1998	21	113	5.9	8.97	9.50	F0	N D	003108.78+564740.5
00311+5648	ES 2		2008	22	113	5.9	8.97	9.50	F0	N D	003108.78+564740.5
00311+5648	ES 2		2011	23	113	5.9	8.97	9.50	F0	N D	003108.78+564740.5
00311+5648	ES 2		2012	25	112	5.9	8.97	9.50	F0	N D	003108.78+564740.5
00311+5648	ES 2		2015	26	113	5.9	8.97	9.50	F0	N	003108.78+564740.5
00311+5648	ES 2		2020	31	113	5.9	8.97	9.50	F0	N	003108.78+564740.5

If you need more information about this double, apply for a data request form to the WDS.