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20189+1524
CHE 302

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

20189+1524 CHE 302

20^h 18^m 55.36^s +15° 23' 40.4" P.A. 129.00 sep 23.7 mag 9.56,10.50 Sp K5

Coord 2000	20189+1524		Discov num	CHE 302		Comp			Coord arcsec 2000	20 18 55.36 +15 23 40.4
Date first	1910		Date last	2015		Obs	12
Pa first	130		Pa last	129		P.A. Now (θ)	129°
Sep first	24.8		Sep last	23.7		Sep. Now (ρ)	23.7"
Mag pri	9.56		Mag sec	10.50		delta mag (ΔM)	0.94		Spectral class	K5 (yellow-orange)
Pri motion ra	-004		Sec motion ra	-005
Pri motion dec	-005		Sec motion dec	+003
Notes

rPM=1.259

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	128.8		Precise sep	23.745		Constellation	Delphinus		Tycho2	1631-00197-1
Gaia DR2	1808347811930408960		HD	355387

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20189+1524	CHE 302		1998	3	129	24.1	9.56	10.50		D	201855.36+152340.4
20189+1524	CHE 302		2008	4	128	23.7	9.56	10.50		D	201855.36+152340.4
20189+1524	CHE 302		2013	7	130	23.5	9.56	10.50			201855.36+152340.4
20189+1524	CHE 302		2015	9	129	23.7	9.56	10.50	K5		201855.36+152340.4

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