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Current system

20177+1503
CHE 279

Selections

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

20177+1503 CHE 279

20^h 17^m 42.98^s +15° 02' 25.0" P.A. 181.00 sep 6.8 mag 12.70,14.20

Coord 2000	20177+1503		Discov num	CHE 279		Comp			Coord arcsec 2000	20 17 42.98 +15 02 25.0
Date first	1910		Date last	2015		Obs	10
Pa first	181		Pa last	181		P.A. Now (θ)	181°
Sep first	7.1		Sep last	6.8		Sep. Now (ρ)	6.8"
Mag pri	12.70		Mag sec	14.20		delta mag (ΔM)	1.5		Spectral class
Pri motion ra	+003		Sec motion ra	+039
Pri motion dec	+005		Sec motion dec	+011
Notes

rPM=0.901

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

181.3

Precise sep

6.835

Constellation

Delphinus

Gaia DR2

1805239492559674112

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20177+1503	CHE 279		2006	2	181	6.6	11.20	11.50			201742.94+150216.1
20177+1503	CHE 279		2008	3	181	6.8	11.20	11.50			201742.94+150216.1
20177+1503	CHE 279		2015	6	182	6.9	12.70	14.20			201742.98+150225.0

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