19579+3843 SEI 751 AB

19^h 57^m 49.54^s +38° 43' 37.8" P.A. 258.00 sep 20.4 mag 11.70,12.04

Coord 2000	19579+3843		Discov num	SEI 751		Comp	AB		Coord arcsec 2000	19 57 49.54 +38 43 37.8
Date first	1896		Date last	2017		Obs	13
Pa first	259		Pa last	257.9		P.A. Now (θ)	257.9°
Sep first	20.0		Sep last	20.374		Sep. Now (ρ)	20.374"
Mag pri	11.70		Mag sec	12.04		delta mag (ΔM)	0.34		Spectral class
Pri motion ra	-009		Sec motion ra	-008
Pri motion dec	-014		Sec motion dec	-013
Notes

rPM=0.085 (< 0.3, Physical double)

This double is physical.

19579+3843 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19 57 50 +38 43 38	SEI 751 AB	2017	13	258	20.4	11.70	12.04	0.34		<===
Show			19 57 50 +38 43 38	TOB 163 AC	2017	6	72	23.5	11.70	11.90	0.20
Show			19 57 51 +38 43 45	MLB 949 CD	2017	3	104	3.1	12.20	13.80	1.60

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3137-02906-1

Gaia DR2

2072548292756773376