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20345+1138
J 142

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

20345+1138 J 142

20^h 34^m 25.91^s +11° 37' 17.5" P.A. 242.00 sep 6.5 mag 10.35,12.50

Coord 2000	20345+1138		Discov num	J 142		Comp			Coord arcsec 2000	20 34 25.91 +11 37 17.5
Date first	1907		Date last	2015		Obs	10
Pa first	245		Pa last	242		P.A. Now (θ)	242°
Sep first	6.7		Sep last	6.5		Sep. Now (ρ)	6.5"
Mag pri	10.35		Mag sec	12.50		delta mag (ΔM)	2.15		Spectral class
Pri motion ra	+002		Sec motion ra	+002
Pri motion dec	-004		Sec motion dec	-005
Notes

rPM=0.186 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	241.6		Precise sep	6.474		Constellation	Delphinus		Tycho2	1096-00713-1
Gaia DR2	1755424980090241920

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20345+1138	J 142		2000	5	242	6.5	10.35	12.50		D	203425.91+113717.5
20345+1138	J 142		2001	6	241	6.5	10.35	12.50		D	203425.91+113717.5
20345+1138	J 142		2010	7	241	6.2	10.35	12.50			203425.91+113717.5
20345+1138	J 142		2015	7	242	6.5	10.35	12.50			203425.91+113717.5

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