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20090+3516
SEI 919

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

20090+3516 SEI 919

20^h 08^m 59.99^s +35° 14' 45.3" P.A. 118.00 sep 5.5 mag 11.11,12.10

Coord 2000	20090+3516		Discov num	SEI 919		Comp			Coord arcsec 2000	20 08 59.99 +35 14 45.3
Date first	1895		Date last	2015		Obs	16
Pa first	122		Pa last	118		P.A. Now (θ)	118°
Sep first	6.2		Sep last	5.5		Sep. Now (ρ)	5.5"
Mag pri	11.11		Mag sec	12.10		delta mag (ΔM)	0.99		Spectral class
Pri motion ra	+011		Sec motion ra	+004
Pri motion dec	-009		Sec motion dec	-004
Notes	N (See Notes)

rPM=0.605

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	117.7		Precise sep	5.489		Constellation	Cygnus		Tycho2	2679-01031-1
Gaia DR2	2058833397024863232

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20090+3516	SEI 919		2006	7	114	5.8	11.11	12.10			200859.99+351445.3
20090+3516	SEI 919		2007	10	117	5.6	11.11	12.10		N D	200859.99+351445.3
20090+3516	SEI 919		2015	12	118	5.5	11.11	12.10		N	200859.99+351445.3

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