01217+5752 LYS   7AB

Coord 2000	01217+5752		Discov num	LYS   7		Comp	AB		Coord arcsec 2000	01 21 39.85 +57 52 23.9
Date first	1914		Date last	2015		Obs	8
Pa first	296		Pa last	297		P.A. Now (θ)	297°
Sep first	22.8		Sep last	20.5		Sep. Now (ρ)	20.5"
Mag pri	12.50		Mag sec	14.00		delta mag (ΔM)	1.5		Spectral class
Pri motion ra	-004		Sec motion ra	+002
Pri motion dec	-017		Sec motion dec	-002
Notes

rPM=0.925 This double is not physical.

Show

name

SAO

coord_2000

discov#

comp

first

last

obs

pa

sep

mag1

mag2

d_mag

orb

current

Show

01217+5752

LYS 7

AB

1914

2015

8

297

20.5

12.50

14.00

1.50

<===

Show

01217+5752

LYS 7

AC

1984

2015

7

238

14.3

12.50

13.50

1.00

Triple system
3 visible stars in this system

Precise pa

296.8

Precise sep

20.524

Constellation

Cassiopeia

Gaia DR2

7921452672

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01217+5752	LYS 7	AB	1999	3	297	20.7	12.50	14.00		D	012139.85+575223.9
01217+5752	LYS 7	AB	2003	4	297	20.7	12.50	14.00		D	012139.85+575223.9
01217+5752	LYS 7	AB	2015	5	297	20.5	12.50	14.00			012139.85+575223.9

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