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Doubles in session

Current system

20131+3602
SEI1014

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

20131+3602 SEI1014

20^h 13^m 04.22^s +36° 02' 16.5" P.A. 351.00 sep 27.7 mag 9.56,11.87 Sp B2:II

Coord 2000	20131+3602		Discov num	SEI1014		Comp			Coord arcsec 2000	20 13 04.22 +36 02 16.5
Date first	1896		Date last	2015		Obs	10
Pa first	350		Pa last	351		P.A. Now (θ)	351°
Sep first	28.2		Sep last	27.7		Sep. Now (ρ)	27.7"
Mag pri	9.56		Mag sec	11.87		delta mag (ΔM)	2.31		Spectral class	B2:II (blue-white)
Pri motion ra	-003		Sec motion ra	+003
Pri motion dec	-006		Sec motion dec	-007
Notes

rPM=0.799

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	351.3		Precise sep	27.689		Constellation	Cygnus		Tycho2	2683-02256-1
Gaia DR2	2058966467973935104		HD	228347

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20131+3602	SEI1014		1999	4	351	27.9	9.47	11.30	B2:II	D	201304.22+360216.5
20131+3602	SEI1014		2002	5	351	27.8	9.47	11.30	B2:II	D	201304.22+360216.5
20131+3602	SEI1014		2010	6	351	27.6	9.56	11.87	B2:II		201304.22+360216.5
20131+3602	SEI1014		2015	7	351	27.7	9.56	11.87	B2:II		201304.22+360216.5

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