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20044+4359
ES 2687

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

20044+4359 ES 2687

20^h 04^m 20.17^s +43° 58' 40.2" P.A. 324.00 sep 8.6 mag 12.29,12.80

Coord 2000	20044+4359		Discov num	ES 2687		Comp			Coord arcsec 2000	20 04 20.17 +43 58 40.2
Date first	1892		Date last	2015		Obs	11
Pa first	339		Pa last	324		P.A. Now (θ)	324°
Sep first	9.2		Sep last	8.6		Sep. Now (ρ)	8.6"
Mag pri	12.29		Mag sec	12.80		delta mag (ΔM)	0.51		Spectral class
Pri motion ra	+007		Sec motion ra	-006
Pri motion dec	+001		Sec motion dec	-009
Notes

rPM=1.516

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	324.2		Precise sep	8.566		Constellation	Cygnus		Tycho2	3162-01131-1
Gaia DR2	2075872528712239744

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20044+4359	ES 2687		1998	5	326	8.5	12.29	12.80		D	200420.17+435840.2
20044+4359	ES 2687		2003	6	326	8.6	12.29	12.80		D	200420.17+435840.2
20044+4359	ES 2687		2015	7	324	8.6	12.29	12.80			200420.17+435840.2

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