21156+3600 SEI 1479 AC

21^h 15^m 32.78^s +35° 59' 28.7" P.A. 271.00 sep 27.4 mag 11.08,12.90

Coord 2000	21156+3600		Discov num	SEI1479		Comp	AC		Coord arcsec 2000	21 15 32.78 +35 59 28.7
Date first	1983		Date last	2015		Obs	7
Pa first	271		Pa last	270.7		P.A. Now (θ)	270.7°
Sep first	26.8		Sep last	27.377		Sep. Now (ρ)	27.377"
Mag pri	11.08		Mag sec	12.90		delta mag (ΔM)	1.82		Spectral class
Pri motion ra	-003		Sec motion ra	-005
Pri motion dec	-003		Sec motion dec	-003
Notes

rPM=0.343

Nature of this double is uncertain.

21156+3600 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 15 33 +35 59 29	SEI 1479 AB	2015	9	76	26.9	11.08	13.30	2.22
Show			21 15 33 +35 59 29	SEI 1479 AC	2015	7	271	27.4	11.08	12.90	1.82		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2714-00673-1

Gaia DR2

1867656431208480640