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20236+3605
SEI1110

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

20236+3605 SEI1110

20^h 23^m 37.41^s +36° 05' 23.7" P.A. 156.00 sep 11.8 mag 10.91,12.02 Sp B0

Coord 2000	20236+3605		Discov num	SEI1110		Comp			Coord arcsec 2000	20 23 37.41 +36 05 23.7
Date first	1896		Date last	2015		Obs	13
Pa first	156		Pa last	156		P.A. Now (θ)	156°
Sep first	11.8		Sep last	11.8		Sep. Now (ρ)	11.8"
Mag pri	10.91		Mag sec	12.02		delta mag (ΔM)	1.11		Spectral class	B0 (blue-white)
Pri motion ra	-003		Sec motion ra	-003
Pri motion dec	-005		Sec motion dec	-004
Notes

rPM=0.171 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	155.7		Precise sep	11.753		Constellation	Cygnus		SAO	69947
Tycho2	2684-00501-1		Gaia DR2	2057280229455795200

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20236+3605	SEI1110		1998	6	156	11.8	10.91	12.02	B0	D	202337.41+360523.7
20236+3605	SEI1110		2002	7	156	11.8	10.91	12.02	B0	D	202337.41+360523.7
20236+3605	SEI1110		2010	8	156	11.2	10.91	12.02	B0		202337.41+360523.7
20236+3605	SEI1110		2015	9	156	11.8	10.91	12.02	B0		202337.41+360523.7

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