20047+4938 KU   58AB

Coord 2000	20047+4938		Discov num	KU   58		Comp	AB		Coord arcsec 2000	20 04 40.14 +49 38 30.6
Date first	1901		Date last	2018		Obs	15
Pa first	187		Pa last	186		P.A. Now (θ)	186°
Sep first	2.9		Sep last	2.9		Sep. Now (ρ)	2.9"
Mag pri	10.23		Mag sec	10.41		delta mag (ΔM)	0.18		Spectral class	A2 (white)
Pri motion ra	+013		Sec motion ra	+007
Pri motion dec	+024		Sec motion dec	-016
Notes

rPM=1.482 This double is not physical.

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

pa

sep

mag1

mag2

d_mag

orb

current

Show

20047+4938

KU 58

AB

1901

2018

15

186

2.9

10.23

10.41

0.18

<===

Show

20047+4938

ES 2688

BC

1909

2015

5

169

15.4

10.41

15.10

4.69

Triple system
3 visible stars in this system

Precise pa	186.3		Precise sep	2.868		Constellation	Cygnus		Tycho2	3567-00721-1
Gaia DR2	85228429952

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20047+4938	KU 58	AB	2002	11	187	2.8	10.23	10.41	A2	D	200440.13+493829.4
20047+4938	KU 58	AB	2003	12	187	2.8	10.23	10.41	A2	D	200440.14+493830.6
20047+4938	KU 58	AB	2011	13	190	2.7	10.23	10.41	A2	D	200440.14+493830.6
20047+4938	KU 58	AB	2015	14	186	2.8	10.23	10.41	A2		200440.14+493830.6

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