10084-1945 BU  911AB

Coord 2000	10084-1945		Discov num	BU  911		Comp	AB		Coord arcsec 2000	10 08 21.38 -19 45 18.8
Date first	1880		Date last	2016		Obs	22
Pa first	312		Pa last	315		P.A. Now (θ)	315°
Sep first	4.8		Sep last	4.1		Sep. Now (ρ)	4.1"
Mag pri	7.35		Mag sec	11.21		delta mag (ΔM)	3.86		Spectral class	G0V (yellow)
Pri motion ra	-148		Sec motion ra	-148
Pri motion dec	-329		Sec motion dec	-329
Notes	N V (See Notes, Proper motion indicates physical)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		155757	10 08 21 -19 45 19	BU 911 AB	2016	22	315	4.1	7.35	11.21	3.86		<===
Show		155757	10 08 21 -19 45 19	BU 911 AC	2016	20	54	83.4	7.35	11.38	4.03

Triple system
3 visible stars in this system

Precise pa	315.3		Precise sep	4.115		Constellation	Hydra		SAO	155757
HIP	49668		Tycho2	6067-00598-1		HD	87998		BD	BD-19 2926
Distance	37.57		Distance ly	122.55

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
10084-1945	BU 911	AB	1999	17	312	3.9	7.35	11.21	G0V	N D	100821.47-194515.9
10084-1945	BU 911	AB	2001	18	313	4.1	7.35	11.21	G0V	N D	100821.47-194515.9
10084-1945	BU 911	AB	2015	19	315	4.1	7.35	11.21	G0V	NV	100821.38-194518.8

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