20074+3543 STT 398AB

Coord 2000	20074+3543		Discov num	STT 398		Comp	AB		Coord arcsec 2000	20 07 23.69 +35 43 05.9
Date first	1845		Date last	2015		Obs	35
Pa first	62		Pa last	82		P.A. Now (θ)	82°
Sep first	0.8		Sep last	1.0		Sep. Now (ρ)	1"
Mag pri	7.45		Mag sec	9.20		delta mag (ΔM)	1.75		Spectral class	O9.5III+ (blue)
Pri motion ra	-007		Sec motion ra	-007
Pri motion dec	-002		Sec motion dec	-002
Notes	N (See Notes)

Visually invisible, K-band or other infrared star Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69446	20074+3543	STT 398	AB	1845	2015	35	82	1.0	7.45	9.20	1.75		<===
Show		69446	20074+3543	A 280	AC	1901	2015	3	133	5.7	7.45	14.60	7.15

Triple system
3 visible stars in this system

Precise pa	82		Precise sep	0.96		Constellation	Cygnus		SAO	69446
HIP	99122		Tycho2	2683-03993-1		Gaia DR2	10782859392		HD	191201
BD	BD+35 3970		Distance	628.93		Distance ly	2051.57

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20074+3543	STT 398	AB	2005	24	82	1.0	7.45	9.20	B0IV	N D	200723.69+354305.9
20074+3543	STT 398	AB	2007	27	83	1.0	7.45	9.20	B0IV	N D	200723.69+354305.9
20074+3543	STT 398	AB	2009	28	81	0.9	7.45	9.20	B0IV	N D	200723.69+354305.9
20074+3543	STT 398	AB	2012	31	81	1.0	7.45	9.20	B0IV	N	200723.69+354305.9
20074+3543	STT 398	AB	2015	32	82	1.0	7.45	9.20	B0IV	N	200723.69+354305.9

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