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19458+4033
STT 385

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

19458+4033 STT 385

19^h 45^m 48.77^s +40° 33' 18.9" P.A. 51.00 sep 1.2 mag 7.77,9.58 Sp B7IV dist. 793.65 pc (2588.89 l.y.)

Coord 2000	19458+4033		Discov num	STT 385		Comp			Coord arcsec 2000	19 45 48.77 +40 33 18.9
Date first	1843		Date last	2016		Obs	35
Pa first	50		Pa last	51		P.A. Now (θ)	51°
Sep first	1.1		Sep last	1.2		Sep. Now (ρ)	1.2"
Mag pri	7.77		Mag sec	9.58		delta mag (ΔM)	1.81		Spectral class	B7IV (blue-white)
Pri motion ra	+000		Sec motion ra	+000
Pri motion dec	-003		Sec motion dec	-003
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	50.5		Precise sep	1.228		Constellation	Cygnus		SAO	48807
HIP	97240		Tycho2	3140-01634-1		Gaia DR2	2076744475789900160		HD	186978
BD	BD+40 3870		Distance	793.65		Distance ly	2588.89

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19458+4033	STT 385		1995	27	51	1.2	7.77	9.58	B7IV	D	194548.77+403318.9
19458+4033	STT 385		2010	30	50	1.2	7.77	9.58	B7IV	D	194548.77+403318.9
19458+4033	STT 385		2012	32	51	1.2	7.77	9.58	B7IV		194548.77+403318.9
19458+4033	STT 385		2016	33	51	1.2	7.77	9.58	B7IV		194548.77+403318.9

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