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Current system

20193+2509
POU4364

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

20193+2509 POU4364

20^h 19^m 16.47^s +25° 08' 45.2" P.A. 165.00 sep 16.3 mag 14.20,14.30

Coord 2000	20193+2509		Discov num	POU4364		Comp			Coord arcsec 2000	20 19 16.47 +25 08 45.2
Date first	1898		Date last	2015		Obs	10
Pa first	165		Pa last	165		P.A. Now (θ)	165°
Sep first	15.8		Sep last	16.3		Sep. Now (ρ)	16.3"
Mag pri	14.20		Mag sec	14.30		delta mag (ΔM)	0.1		Spectral class
Pri motion ra	-019		Sec motion ra	+007
Pri motion dec	-013		Sec motion dec	-012
Notes

rPM=1.13

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa

164.8

Precise sep

16.277

Constellation

Vulpecula

Gaia DR2

1832338464154618240

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20193+2509	POU4364		1998	2	165	16.2	14.20	14.30		D	201916.47+250845.2
20193+2509	POU4364		2002	4	165	16.1	14.20	14.30		D	201916.47+250845.2
20193+2509	POU4364		2010	5	165	16.3	14.20	14.30			201916.47+250845.2
20193+2509	POU4364		2015	6	165	16.3	14.20	14.30			201916.47+250845.2

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