20259+4019 ALI1142

Coord 2000	20259+4019		Discov num	ALI1142		Comp			Coord arcsec 2000	20 25 54.02 +40 18 40.5
Date first	1928		Date last	2015		Obs	9
Pa first	71		Pa last	56		P.A. Now (θ)	56°
Sep first	11.2		Sep last	12.1		Sep. Now (ρ)	12.1"
Mag pri	12.10		Mag sec	12.30		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	-009		Sec motion ra	-004
Pri motion dec	-018		Sec motion dec	+005
Notes

rPM=1.17 This double is not physical.

Precise pa

55.9

Precise sep

12.079

Constellation

Cygnus

Gaia DR2

52392592896

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20259+4019	ALI1142		1998	2	57	11.9	12.50	13.10		D	202554.02+401840.5
20259+4019	ALI1142		2002	3	57	11.9	12.50	13.10		D	202554.02+401840.5
20259+4019	ALI1142		2010	4	57	11.9	12.10	12.30			202554.02+401840.5
20259+4019	ALI1142		2015	5	56	12.1	12.10	12.30			202554.02+401840.5

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