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20257+5508
A 1429

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

20257+5508 A 1429

20^h 25^m 40.71^s +55° 08' 20.3" P.A. 187.00 sep 0.7 mag 8.57,9.35 Sp A2V dist. 289.02 pc (942.78 l.y.)

Coord 2000	20257+5508		Discov num	A 1429		Comp			Coord arcsec 2000	20 25 40.71 +55 08 20.3
Date first	1906		Date last	2016		Obs	17
Pa first	197		Pa last	187		P.A. Now (θ)	187°
Sep first	0.7		Sep last	0.7		Sep. Now (ρ)	0.7"
Mag pri	8.57		Mag sec	9.35		delta mag (ΔM)	0.78		Spectral class	A2V (white)
Pri motion ra	+004		Sec motion ra	+004
Pri motion dec	+003		Sec motion dec	+003
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	186.8		Precise sep	0.68		Constellation	Cygnus		SAO	32570
HIP	100755		Tycho2	3941-01889-1		Gaia DR2	2186591562917346304		HD	194907
BD	BD+54 2349		Distance	289.02		Distance ly	942.78

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20257+5508	A 1429		2004	13	187	0.6	8.57	9.35	A2V	D	202540.71+550820.3
20257+5508	A 1429		2008	14	188	0.6	8.57	9.35	A2V	D	202540.71+550820.3
20257+5508	A 1429		2016	16	187	0.7	8.57	9.35	A2V		202540.71+550820.3

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