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Doubles in session

Current system

19403+3831
SEI 658

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

19403+3831 SEI 658

19^h 40^m 19.62^s +38° 31' 01.5" P.A. 137.00 sep 14.2 mag 10.66,11.13

Coord 2000	19403+3831		Discov num	SEI 658		Comp			Coord arcsec 2000	19 40 19.62 +38 31 01.5
Date first	1896		Date last	2015		Obs	16
Pa first	146		Pa last	137		P.A. Now (θ)	137°
Sep first	15.2		Sep last	14.2		Sep. Now (ρ)	14.2"
Mag pri	10.66		Mag sec	11.13		delta mag (ΔM)	0.47		Spectral class
Pri motion ra	-008		Sec motion ra	-001
Pri motion dec	-012		Sec motion dec	+001
Notes

rPM=1.024

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	137.4		Precise sep	14.192		Constellation	Cygnus		Tycho2	3136-01035-1
Gaia DR2	2052131736205469184

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19403+3831	SEI 658		1998	8	139	14.3	10.66	11.13		D	194019.62+383101.5
19403+3831	SEI 658		2008	9	138	14.2	10.66	11.13		D	194019.62+383101.5
19403+3831	SEI 658		2010	11	137	13.9	10.66	11.13			194019.62+383101.5
19403+3831	SEI 658		2015	12	137	14.2	10.66	11.13			194019.62+383101.5

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