20161+1553 BKO 556AC

Coord 2000	20161+1553		Discov num	BKO 556		Comp	AC		Coord arcsec 2000	20 16 08.72 +15 52 48.5
Date first	1998		Date last	2015		Obs	7
Pa first	313		Pa last	313		P.A. Now (θ)	313°
Sep first	10.2		Sep last	10.2		Sep. Now (ρ)	10.2"
Mag pri	13.65		Mag sec	15.00		delta mag (ΔM)	1.35		Spectral class
Pri motion ra	+007		Sec motion ra	-015
Pri motion dec	-028		Sec motion dec	+008
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.462 This double is not physical.

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

pa

sep

mag1

mag2

d_mag

orb

current

Show

20161+1553

CHE 254

AB

1910

2015

9

133

26.6

13.65

13.29

0.36

Show

20161+1553

BKO 556

AC

1998

2015

7

313

10.2

13.65

15.00

1.35

<===

Triple system
3 visible stars in this system

Precise pa

312.6

Precise sep

10.206

Constellation

Delphinus

Gaia DR2

74964835840

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20161+1553	BKO 556	AC	2008	1	313	10.3	10.45	13.50		N	201608.72+155248.6
20161+1553	BKO 556	AC	2010	4	312	9.7	13.65	15.00		N	201608.72+155248.5
20161+1553	BKO 556	AC	2015	4	313	10.2	13.65	15.00		N	201608.72+155248.5

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