Coord 2000	20124+3545	Discov num	BKO 104	Comp	AB	Coord arcsec 2000	20 12 21.90 +35 45 05.1
Date first	1998	Date last	2015	Obs	8
Pa first	72	Pa last	72	P.A. Now (θ)	72°
Sep first	9.4	Sep last	9.4	Sep. Now (ρ)	9.4"
Mag pri	11.90	Mag sec	11.80	delta mag (ΔM)	0.1	Spectral class
Pri motion ra	+051	Sec motion ra	-003
Pri motion dec	-029	Sec motion dec	+001
Notes	R (Red magnitudes)

Visually invisible, K-band or other infrared star rPM=1.053

This double is not physical.

20124+3545 SYSTEM COMPONENTS

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

sep

mag1

mag2

d_mag

orb

current

Show

20124+3545

BKO 104

1998

2015

9.4

11.90

11.80

0.10

<===

Show

20124+3545

BKO 104

1998

2015

285

9.3

11.90

13.80

1.90

Triple system
3 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa

71.9

Precise sep

9.404

Constellation

Cygnus

Gaia DR2

24352116608

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20124+3545	BKO 104	AB	2002	2	72	9.5	10.50	15.00		D	201222.54+354508.6
20124+3545	BKO 104	AB	2015	4	72	9.5	11.90	11.80		R	201221.90+354505.1

If you need more information about this double, apply for a data request form to the WDS.