00187+1559 STF  25AB,C

Coord 2000	00187+1559		Discov num	STF  25		Comp	AB,C		Coord arcsec 2000	00 18 42.80 +15 59 26.5
Date first	1913		Date last	2000		Obs	6
Pa first	202		Pa last	202		P.A. Now (θ)	202°
Sep first	173.7		Sep last	171.5		Sep. Now (ρ)	171.5"
Mag pri	8.97		Mag sec	13.17		delta mag (ΔM)	4.2		Spectral class	F5 (yellow-white)
Pri motion ra	+030		Sec motion ra	+017
Pri motion dec	-039		Sec motion dec	+000
Notes

rPM=0.835 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		91839	00 18 43 +15 59 26	STF 25 AB	2016	62	196	1.0	9.31	9.55	0.24
Show		91839	00 18 43 +15 59 26	STF 25 AB,C	2000	6	202	171.5	8.97	13.17	4.20		<===

Triple system
4 visible stars in this system

Precise pa	202.1		Precise sep	171.477		Constellation	Hydra		SAO	91839
HIP	1503		Tycho2	1179-00068-1		Gaia DR2	2792641032108486016		HD	1450
BD	BD+15 43		Distance	167.5		Distance ly	546.38

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00187+1559	STF 25	AB,C	1998	5	202	171.5	8.90	12.00		D	001842.80+155926.5
00187+1559	STF 25	AB,C	2000	6	202	171.5	8.90	12.00		D	001842.80+155926.5

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