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19401+3509
SEI 656

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

19401+3509 SEI 656

19^h 40^m 06.89^s +35° 08' 52.1" P.A. 288.00 sep 11.4 mag 8.14,11.40 Sp A0 dist. 364.96 pc (1190.5 l.y.)

Coord 2000	19401+3509		Discov num	SEI 656		Comp			Coord arcsec 2000	19 40 06.89 +35 08 52.1
Date first	1894		Date last	2015		Obs	15
Pa first	284		Pa last	288		P.A. Now (θ)	288°
Sep first	10.7		Sep last	11.4		Sep. Now (ρ)	11.4"
Mag pri	8.14		Mag sec	11.40		delta mag (ΔM)	3.26		Spectral class	A0 (white)
Pri motion ra	+002		Sec motion ra	-003
Pri motion dec	-002		Sec motion dec	+000
Notes

rPM=1.795

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	288.4		Precise sep	11.427		Constellation	Cygnus		SAO	68665
HIP	96759		Tycho2	2664-01341-1		Gaia DR2	2047408543503860864		HD	185913
BD	BD+34 3653		Distance	364.96		Distance ly	1190.5

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19401+3509	SEI 656		1998	9	289	11.3	8.14	11.40	A0	D	194006.89+350852.1
19401+3509	SEI 656		2002	10	290	11.5	8.14	11.40	A0	D	194006.89+350852.1
19401+3509	SEI 656		2010	11	289	10.9	8.14	11.40	A0		194006.89+350852.1
19401+3509	SEI 656		2015	15	288	11.4	8.14	11.40	A0		194006.89+350852.1

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