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20107+3657
SEI 953

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

20107+3657 SEI 953

20^h 10^m 40.88^s +36° 56' 43.5" P.A. 301.00 sep 17.4 mag 12.40,13.40

Coord 2000	20107+3657		Discov num	SEI 953		Comp			Coord arcsec 2000	20 10 40.88 +36 56 43.5
Date first	1896		Date last	2015		Obs	10
Pa first	302		Pa last	301		P.A. Now (θ)	301°
Sep first	17.4		Sep last	17.4		Sep. Now (ρ)	17.4"
Mag pri	12.40		Mag sec	13.40		delta mag (ΔM)	1		Spectral class
Pri motion ra	-002		Sec motion ra	-003
Pri motion dec	-007		Sec motion dec	-006
Notes

rPM=0.194 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	301		Precise sep	17.414		Constellation	Cygnus		Tycho2	2683-02367-1
Gaia DR2	2060750700470421120

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20107+3657	SEI 953		1998	3	301	17.5	12.40	13.40		D	201040.88+365643.5
20107+3657	SEI 953		2002	4	301	17.4	12.40	13.40		D	201040.88+365643.5
20107+3657	SEI 953		2010	5	302	17.5	12.40	13.40			201040.88+365643.5
20107+3657	SEI 953		2015	6	301	17.4	12.40	13.40			201040.88+365643.5

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