21028+3534 SEI1376AC

Coord 2000	21028+3534		Discov num	SEI1376		Comp	AC		Coord arcsec 2000	21 02 46.07 +35 33 29.8
Date first	1896		Date last	2020		Obs	11
Pa first	270		Pa last	270		P.A. Now (θ)	270°
Sep first	11.3		Sep last	11.1		Sep. Now (ρ)	11.1"
Mag pri	12.30		Mag sec	12.70		delta mag (ΔM)	0.4		Spectral class
Pri motion ra	+000		Sec motion ra	+002
Pri motion dec	-005		Sec motion dec	-002
Notes	N R (See Notes, Red magnitudes)

rPM=0.721 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 02 46 +35 33 30	SEI 1375 AB	2020	14	339	6.5	12.30	11.50	0.80
Show			21 02 46 +35 33 30	SEI 1376 AC	2020	11	270	11.1	12.30	12.70	0.40		<===
Show			21 02 46 +35 33 36	BTG 6 BC	2020	11	235	10.6	11.50	12.70	1.20
Show			21 02 46 +35 33 36	BTG 6 BD	2020	8	274	15.9	11.50	14.20	2.70

Quadruple system
4 visible stars in this system

Precise pa

270.2

Precise sep

11.093

Constellation

Cygnus

Gaia DR2

1868182719322835456

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21028+3534	SEI1376	AC	1941	3	271	12.0	10.00	11.00			210245.85+353336.0
21028+3534	SEI1376	AC	2007	4	236	10.7	9.50	13.30			210245.85+353336.0
21028+3534	SEI1376	AC	2012	4	272	11.4	9.50	13.30		D	210245.85+353336.0
21028+3534	SEI1376	AC	2015	7	271	11.4	12.30	12.70		N R	210246.07+353329.8

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