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20202+5540
STI2519

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

20202+5540 STI2519

20^h 20^m 08.57^s +55° 40' 17.9" P.A. 119.00 sep 13.2 mag 12.62,14.10

Coord 2000	20202+5540		Discov num	STI2519		Comp			Coord arcsec 2000	20 20 08.57 +55 40 17.9
Date first	1917		Date last	2015		Obs	9
Pa first	122		Pa last	119		P.A. Now (θ)	119°
Sep first	13.9		Sep last	13.2		Sep. Now (ρ)	13.2"
Mag pri	12.62		Mag sec	14.10		delta mag (ΔM)	1.48		Spectral class
Pri motion ra	-007		Sec motion ra	-007
Pri motion dec	+002		Sec motion dec	+004
Notes

rPM=0.248 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	118.7		Precise sep	13.152		Constellation	Cygnus		Tycho2	3941-01020-1
Gaia DR2	2185362888729556480

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20202+5540	STI2519		1999	2	119	13.2	12.62	14.10		D	202008.57+554017.9
20202+5540	STI2519		2003	3	119	13.2	12.62	14.10		D	202008.57+554017.9
20202+5540	STI2519		2010	4	119	13.0	12.62	14.10			202008.57+554017.9
20202+5540	STI2519		2015	5	119	13.2	12.62	14.10			202008.57+554017.9

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