01187-2249 HDO  47

Coord 2000	01187-2249		Discov num	HDO  47		Comp			Coord arcsec 2000	01 18 40.42 -22 49 15.6
Date first	1867		Date last	2015		Obs	15
Pa first	61		Pa last	62		P.A. Now (θ)	62°
Sep first	10.5		Sep last	9.6		Sep. Now (ρ)	9.6"
Mag pri	8.82		Mag sec	10.55		delta mag (ΔM)	1.73		Spectral class	G3V (yellow)
Pri motion ra	+051		Sec motion ra	+052
Pri motion dec	+020		Sec motion dec	+020
Notes	N V (See Notes, Proper motion indicates physical)

Visually invisible, K-band or other infrared star rPM=0.018 (< 0.3, Physical double) This double is physical.

Precise pa	62.2		Precise sep	9.619		Constellation	Cetus		SAO	166948
Tycho2	6425-00219-1		Gaia DR2	26248348160		HD	7930

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01187-2249	HDO 47		1998	12	62	9.7	8.82	10.55	G3V	N D	011840.42-224915.6
01187-2249	HDO 47		1999	13	63	9.5	8.82	10.55	G3V	N D	011840.42-224915.6
01187-2249	HDO 47		2010	14	63	9.4	8.82	10.55	G3V	N	011840.42-224915.6
01187-2249	HDO 47		2015	15	62	9.6	8.82	10.55	G3V	N W	011840.42-224915.6

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