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20128+3638
SEI1010

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

20128+3638 SEI1010

20^h 12^m 51.02^s +36° 38' 20.0" P.A. 205.00 sep 31.4 mag 11.92,13.09

Coord 2000	20128+3638		Discov num	SEI1010		Comp			Coord arcsec 2000	20 12 51.02 +36 38 20.0
Date first	1896		Date last	2014		Obs	6
Pa first	205		Pa last	205		P.A. Now (θ)	205°
Sep first	26.3		Sep last	31.4		Sep. Now (ρ)	31.4"
Mag pri	11.92		Mag sec	13.09		delta mag (ΔM)	1.17		Spectral class
Pri motion ra	-001		Sec motion ra	-001
Pri motion dec	-007		Sec motion dec	-005
Notes

rPM=0.283 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	204.7		Precise sep	31.4		Constellation	Cygnus		SAO	69610
Gaia DR2	2060687173633599616

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20128+3638	SEI1010		1983	2	25	25.5	10.78	10.80			201248.74+363637.9
20128+3638	SEI1010		2002	4	205	25.3	11.92	13.09			201251.02+363820.0
20128+3638	SEI1010		2013	5	205	32.1	11.92	13.09			201251.02+363820.0
20128+3638	SEI1010		2014	6	205	31.4	11.92	13.09			201251.02+363820.0

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