20180+3613 SEI1073

Coord 2000	20180+3613		Discov num	SEI1073		Comp			Coord arcsec 2000	20 18 01.70 +36 12 36.6
Date first	1896		Date last	2015		Obs	16
Pa first	104		Pa last	149		P.A. Now (θ)	149°
Sep first	4.0		Sep last	4.7		Sep. Now (ρ)	4.7"
Mag pri	10.86		Mag sec	11.30		delta mag (ΔM)	0.44		Spectral class
Pri motion ra	-072		Sec motion ra	-014
Pri motion dec	+071		Sec motion dec	-037
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.212 This double is not physical.

Precise pa	148.6		Precise sep	4.66		Constellation	Cygnus		Tycho2	2684-00716-1
Gaia DR2	79068167936

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20180+3613	SEI1073		1998	10	143	4.5	10.86	11.30		N D	201801.70+361236.6
20180+3613	SEI1073		2010	11	147	4.6	10.86	11.30		N D	201801.70+361236.6
20180+3613	SEI1073		2011	13	148	4.6	10.86	11.30		N D	201801.70+361236.6
20180+3613	SEI1073		2013	14	148	4.7	10.86	11.30		N	201801.70+361236.6
20180+3613	SEI1073		2015	15	149	4.7	10.86	11.30		N	201801.70+361236.6

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