01506+0231 ABT   1AD

Coord 2000	01506+0231		Discov num	ABT   1		Comp	AD		Coord arcsec 2000	01 50 36.65 +02 31 00.0
Date first	1909		Date last	2002		Obs	6
Pa first	207		Pa last	208		P.A. Now (θ)	208°
Sep first	70.2		Sep last	71.0		Sep. Now (ρ)	71"
Mag pri	9.82		Mag sec	12.83		delta mag (ΔM)	3.01		Spectral class	A5 (white)
Pri motion ra	-001		Sec motion ra	-006
Pri motion dec	+000		Sec motion dec	-012
Notes

rPM=0.969 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			01506+0231	HDO 54	AB	1867	2004	12	117	4.6	9.82	11.00	1.18
Show			01506+0231	HDO 54	AC	1867	2006	8	213	17.4	9.82	12.83	3.01
Show			01506+0231	ABT 1	AD	1909	2002	6	208	71.0	9.82	12.83	3.01		<===
Show			01506+0231	HDO 54	BC	1867	2000	6	227	18.0	11.00	12.83	1.83

Quadruple system
4 visible stars in this system

Precise pa	207.5		Precise sep	71.026		Constellation	Cetus		Tycho2	0033-00330-1
last precise pa	207.5		last precise sep	71.026

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01506+0231	ABT 1	AD	1912	3	208	70.2	9.82	12.20			015036.65+023100.0
01506+0231	ABT 1	AD	2000	4	208	71.0	9.82	12.83			015036.65+023100.0
01506+0231	ABT 1	AD	2002	6	208	71.0	9.82	12.83			015036.65+023100.0

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