19591+3942 ES 1970 BC

Coord 2000	19591+3942		Discov num	ES 1970		Comp	BC		Coord arcsec 2000	19 59 07.82 +39 42 07.0
Date first	1922		Date last	2015		Obs	7
Pa first	328		Pa last	335.4		P.A. Now (θ)	335.4°
Sep first	4.7		Sep last	5.268		Sep. Now (ρ)	5.268"
Mag pri	11.50		Mag sec	13.20		delta mag (ΔM)	1.7		Spectral class
Pri motion ra	+015		Sec motion ra
Pri motion dec	-041		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 226955		19 59 07 +39 42 23	ES 1970 AB	2015	13	150	19.1	10.00	11.60	1.60
Show			19 59 07 +39 42 23	BER 1 AE	2015	7	139	46.8	10.00	10.60	0.60
Show			19 59 08 +39 42 07	ES 1970 BC	2015	7	335	5.3	11.50	13.20	1.70		<===

Quadruple system
4 estimated visually detectable stars in this system

Constellation

Cygnus

Gaia DR2

2072708920213146752

discov_num	notes	refcode
ES 1970	AB: SEI 768.	Nsn2017b

refcode	metd	author	reference
Nsn2017b	not -	Nanson, J.	...................
Nsn2017b		private communication, 2017

idgroup	discov	author
1	BER	Berman, L.
14	ES	Espin, T.E.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19591+3942	ES 1970	BC	1998	2	335	5.1	11.70	13.10		D	195907.82+394207.0
19591+3942	ES 1970	BC	2002	3	335	5.2	11.60	13.00		D	195907.82+394207.0
19591+3942	ES 1970	BC	2015	4	335	5.3	11.50	13.20		N	195907.82+394207.0

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS