20107+3703 STT 399AB

Coord 2000	20107+3703		Discov num	STT 399		Comp	AB		Coord arcsec 2000	20 10 44.13 +37 02 33.5
Date first	1845		Date last	2015		Obs	25
Pa first	275		Pa last	278		P.A. Now (θ)	278°
Sep first	3.0		Sep last	4.6		Sep. Now (ρ)	4.6"
Mag pri	7.57		Mag sec	9.92		delta mag (ΔM)	2.35		Spectral class	G3Ib (yellow)
Pri motion ra	+003		Sec motion ra	+000
Pri motion dec	-003		Sec motion dec	+000
Notes	N (See Notes)

rPM=1 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 10 44 +37 02 34	STT 399 AB	2015	25	278	4.6	7.57	9.92	2.35		<===
Show			20 10 44 +37 02 34	WAL 129 AC	2015	5	271	26.9	7.57	11.30	3.73

Triple system
3 visible stars in this system

Precise pa	278.3		Precise sep	4.588		Constellation	Cygnus		Tycho2	2683-00875-1
Gaia DR2	2060755755675740800		HD	191897

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20107+3703	STT 399	AB	2002	21	279	4.3	7.57	9.92	G3Ib	D	201044.13+370233.5
20107+3703	STT 399	AB	2010	23	279	4.5	7.57	9.92	G3Ib	D	201044.13+370233.5
20107+3703	STT 399	AB	2015	25	278	4.6	7.57	9.92	G3Ib	N	201044.13+370233.5

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