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Doubles in session

Current system

20248+3545
BU 432

Selections

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Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20248+3545 BU 432

20^h 24^m 48.74^s +35° 45' 28.2" P.A. 196.00 sep 1.5 mag 8.61,9.43 Sp F8

Coord 2000	20248+3545		Discov num	BU 432		Comp			Coord arcsec 2000	20 24 48.74 +35 45 28.2
Date first	1877		Date last	2016		Obs	29
Pa first	195		Pa last	196		P.A. Now (θ)	196°
Sep first	1.2		Sep last	1.5		Sep. Now (ρ)	1.5"
Mag pri	8.61		Mag sec	9.43		delta mag (ΔM)	0.82		Spectral class	F8 (yellow-white)
Pri motion ra	+020		Sec motion ra	+020
Pri motion dec	+012		Sec motion dec	+012
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	196.3		Precise sep	1.468		Constellation	Cygnus		SAO	69982
Tycho2	2697-01412-1		Gaia DR2	2057221925281383168		HD	194524

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20248+3545	BU 432		2005	22	194	1.5	8.61	9.43	F8		202448.74+354528.2
20248+3545	BU 432		2006	23	197	1.4	8.61	9.43	F8		202448.74+354528.2
20248+3545	BU 432		2008	24	197	1.4	8.61	9.43	F8		202448.74+354528.2
20248+3545	BU 432		2011	25	197	1.4	8.61	9.43	F8		202448.74+354528.2
20248+3545	BU 432		2014	26	196	1.3	8.61	9.43	F8		202448.74+354528.2
20248+3545	BU 432		2016	27	196	1.5	8.61	9.43	F8		202448.74+354528.2

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