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20315+0444
BAL2966

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

20315+0444 BAL2966

20^h 31^m 32.31^s +04° 44' 12.4" P.A. 118.00 sep 10.4 mag 11.68,11.66

Coord 2000	20315+0444		Discov num	BAL2966		Comp			Coord arcsec 2000	20 31 32.31 +04 44 12.4
Date first	1908		Date last	2016		Obs	12
Pa first	118		Pa last	118		P.A. Now (θ)	118°
Sep first	10.3		Sep last	10.4		Sep. Now (ρ)	10.4"
Mag pri	11.68		Mag sec	11.66		delta mag (ΔM)	0.02		Spectral class
Pri motion ra	-017		Sec motion ra	-013
Pri motion dec	-011		Sec motion dec	-014
Notes

rPM=0.247 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	117.9		Precise sep	10.449		Constellation	Delphinus		Tycho2	0518-01687-1
Gaia DR2	4245533356296931584

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20315+0444	BAL2966		2000	3	118	10.3	12.12	12.20		D	203132.31+044412.4
20315+0444	BAL2966		2002	5	118	10.4	12.12	12.20		D	203132.31+044412.4
20315+0444	BAL2966		2010	6	118	9.7	11.68	11.66			203132.31+044412.4
20315+0444	BAL2966		2016	7	118	10.4	11.68	11.66			203132.31+044412.4

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