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Doubles in session

Current system

20089+3450
SEI 918

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

20089+3450 SEI 918

20^h 08^m 58.43^s +34° 48' 53.3" P.A. 343.00 sep 14.6 mag 11.72,

Coord 2000	20089+3450		Discov num	SEI 918		Comp			Coord arcsec 2000	20 08 58.43 +34 48 53.3
Date first	1896		Date last	1896		Obs	1
Pa first	343		Pa last	343		P.A. Now (θ)	343°
Sep first	14.6		Sep last	14.6		Sep. Now (ρ)	14.6"
Mag pri	11.72		Mag sec			delta mag (ΔM)			Spectral class
Pri motion ra	+005		Sec motion ra
Pri motion dec	-004		Sec motion dec
Notes	N X (See Notes, Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

343.2

Precise sep

14.61

Constellation

Cygnus

Gaia DR2

2058740728807205248

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20089+3450	SEI 918		1896	1	343	14.6	11.72			NX	200858.43+344853.3
20089+3450	SEI 918		1998	2	326	16.9	10.80	11.00		D	200849.82+345004.3

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