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20203+3922
SEI1091

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

20203+3922 SEI1091

20^h 20^m 17.93^s +39° 22' 29.2" P.A. 180.00 sep 27.7 mag 8.92,11.39 Sp A5

Coord 2000	20203+3922		Discov num	SEI1091		Comp			Coord arcsec 2000	20 20 17.93 +39 22 29.2
Date first	1892		Date last	2020		Obs	17
Pa first	181		Pa last	180		P.A. Now (θ)	180°
Sep first	29.5		Sep last	27.7		Sep. Now (ρ)	27.7"
Mag pri	8.92		Mag sec	11.39		delta mag (ΔM)	2.47		Spectral class	A5 (white)
Pri motion ra	-007		Sec motion ra	-004
Pri motion dec	-027		Sec motion dec	-006
Notes

rPM=0.761

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	180		Precise sep	27.66		Constellation	Cygnus		SAO	69856
Tycho2	3152-01545-1		Gaia DR2	2061463390161118464		HD	193702		HR	7784
DM	BD+38 4021

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20203+3922	SEI1091		1998	8	180	27.4	8.92	11.10	A5	D	202017.93+392229.2
20203+3922	SEI1091		2008	9	181	27.4	8.92	11.10	A5	D	202017.93+392229.2
20203+3922	SEI1091		2010	11	181	27.1	8.92	11.39	A5		202017.93+392229.2
20203+3922	SEI1091		2015	12	180	27.2	8.92	11.39	A5		202017.93+392229.2

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