20041+5428 STI2497

Coord 2000	20041+5428		Discov num	STI2497		Comp			Coord arcsec 2000	20 04 07.19 +54 27 58.7
Date first	1917		Date last	2015		Obs	22
Pa first	124		Pa last	30		P.A. Now (θ)	30°
Sep first	10.1		Sep last	12.5		Sep. Now (ρ)	12.5"
Mag pri	7.79		Mag sec	11.10		delta mag (ΔM)	3.31		Spectral class	K0 (yellow-orange)
Pri motion ra	+052		Sec motion ra	+034
Pri motion dec	-118		Sec motion dec	+042
Notes	N L (See Notes, Linear solution)

Visually invisible, K-band or other infrared star rPM=1.249 This double is not physical.

Precise pa	29.9		Precise sep	12.527		Constellation	Cygnus		SAO	32254
Tycho2	3940-01134-1		Gaia DR2	84958189568		HD	190780

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20041+5428	STI2497		1999	5	39	10.6	7.79	11.10	K0	N D	200407.19+542758.7
20041+5428	STI2497		2004	6	36	11.2	7.79	11.10	K0	N D	200407.19+542758.7
20041+5428	STI2497		2010	7	32	12.0	7.79	11.10	K0	NUD	200407.19+542758.7
20041+5428	STI2497		2015	9	30	12.5	7.79	11.10	K0	NL	200407.19+542758.7

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