20306+1932 UC  251

Coord 2000	20306+1932		Discov num	UC  251		Comp			Coord arcsec 2000	20 30 36.61 +19 31 44.1
Date first	2000		Date last	2015		Obs	8
Pa first	38		Pa last	38		P.A. Now (θ)	38°
Sep first	39.9		Sep last	39.9		Sep. Now (ρ)	39.9"
Mag pri	11.30		Mag sec	12.70		delta mag (ΔM)	1.4		Spectral class
Pri motion ra	-050		Sec motion ra	-052
Pri motion dec	-017		Sec motion dec	-013
Notes	V (Proper motion indicates physical)

Visually invisible, K-band or other infrared star rPM=0.083 (< 0.3, Physical double) This double is physical.

Precise pa	37.6		Precise sep	39.885		Constellation	Delphinus		Tycho2	1640-02020-1
Gaia DR2	65891526528

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20306+1932	UC 251		2000	1	38	39.9	11.30	12.44		V	203036.61+193144.1
20306+1932	UC 251		2001	2	38	39.9	11.30	12.44		VD	203036.61+193144.1
20306+1932	UC 251		2010	3	38	39.9	11.30	12.70		V	203036.61+193144.1
20306+1932	UC 251		2015	4	37	39.7	11.30	12.70		V	203036.61+193144.1

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