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20182+1511
A 1670

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

20182+1511 A 1670

20^h 18^m 11.95^s +15° 11' 23.7" P.A. 219.00 sep 0.4 mag 9.60,10.00 Sp A0

Coord 2000	20182+1511		Discov num	A 1670		Comp			Coord arcsec 2000	20 18 11.95 +15 11 23.7
Date first	1907		Date last	2011		Obs	14
Pa first	202		Pa last	219		P.A. Now (θ)	219°
Sep first	0.2		Sep last	0.4		Sep. Now (ρ)	0.4"
Mag pri	9.60		Mag sec	10.00		delta mag (ΔM)	0.4		Spectral class	A0 (white)
Pri motion ra	+003		Sec motion ra
Pri motion dec	-016		Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	219.4		Precise sep	0.36		Constellation	Delphinus		SAO	105938
Tycho2	1631-00742-1		Gaia DR2	1808338225563158400		HD	193141

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20182+1511	A 1670		1989	12	215	0.3	9.60	10.00	A0		201811.95+151123.7
20182+1511	A 1670		2007	13	213	0.4	9.60	10.00	A0		201811.95+151123.7
20182+1511	A 1670		2011	14	219	0.4	9.60	10.00	A0		201811.95+151123.7

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