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

20334+4752 J 4

20^h 33^m 24.19^s +47° 51' 37.1" P.A. 1.00 sep 2.6 mag 11.36,12.05

Coord 2000	20334+4752		Discov num	J 4		Comp			Coord arcsec 2000	20 33 24.19 +47 51 37.1
Date first	1909		Date last	2016		Obs	16
Pa first	356		Pa last	1		P.A. Now (θ)	1°
Sep first	1.8		Sep last	2.6		Sep. Now (ρ)	2.6"
Mag pri	11.36		Mag sec	12.05		delta mag (ΔM)	0.69		Spectral class
Pri motion ra	-005		Sec motion ra	+000
Pri motion dec	-022		Sec motion dec	+011
Notes

rPM=1.479

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	1		Precise sep	2.582		Constellation	Cygnus		Tycho2	3577-01271-1
Gaia DR2	2071646414022120704

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20334+4752	J 4		1991	10	2	2.6	11.36	12.05			203324.19+475137.1
20334+4752	J 4		2010	11	0	2.5	11.36	12.05			203324.19+475137.1
20334+4752	J 4		2013	14	1	2.6	11.36	12.05			203324.19+475137.1
20334+4752	J 4		2015	15	1	2.6	11.36	12.05			203324.19+475137.1

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