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Doubles in session

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20280+4829
HU 587

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

20280+4829 HU 587

20^h 28^m 00.09^s +48° 28' 45.8" P.A. 338.00 sep 0.6 mag 9.93,10.26 Sp A5

Coord 2000	20280+4829		Discov num	HU 587		Comp			Coord arcsec 2000	20 28 00.09 +48 28 45.8
Date first	1902		Date last	2016		Obs	10
Pa first	356		Pa last	338		P.A. Now (θ)	338°
Sep first	0.8		Sep last	0.6		Sep. Now (ρ)	0.6"
Mag pri	9.93		Mag sec	10.26		delta mag (ΔM)	0.33		Spectral class	A5 (white)
Pri motion ra	+011		Sec motion ra	+011
Pri motion dec	+024		Sec motion dec	+024
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	338.4		Precise sep	0.62		Constellation	Cygnus		Tycho2	3577-01999-1
Gaia DR2	2083913291604539008

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20280+4829	HU 587		1997	8	338	0.6	9.93	10.26	A5		202800.09+482845.8
20280+4829	HU 587		2016	9	338	0.6	9.93	10.26	A5		202800.09+482845.8

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