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Doubles in session

Current system

20350+3259
HJ 1542

Selections

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

20350+3259 HJ 1542

20^h 35^m 05.71^s +32° 59' 06.6" P.A. 230.00 sep 16.1 mag 9.81,10.50

Coord 2000	20350+3259		Discov num	HJ 1542		Comp			Coord arcsec 2000	20 35 05.71 +32 59 06.6
Date first	1828		Date last	2015		Obs	16
Pa first	227		Pa last	230		P.A. Now (θ)	230°
Sep first	10.0		Sep last	16.1		Sep. Now (ρ)	16.1"
Mag pri	9.81		Mag sec	10.50		delta mag (ΔM)	0.69		Spectral class
Pri motion ra	+000		Sec motion ra	-001
Pri motion dec	-006		Sec motion dec	-007
Notes

rPM=0.2 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	229.6		Precise sep	16.079		Constellation	Cygnus		Tycho2	2690-00909-1
Gaia DR2	1863613767479139072

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20350+3259	HJ 1542		1998	7	230	16.0	9.81	10.50		D	203505.71+325906.6
20350+3259	HJ 1542		2008	8	229	16.0	9.81	10.50		D	203505.71+325906.6
20350+3259	HJ 1542		2010	11	230	16.1	9.81	10.50			203505.71+325906.6
20350+3259	HJ 1542		2015	12	229	16.0	9.81	10.50			203505.71+325906.6

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