09109+6331 H 5  73AB (Tau UMa)

Coord 2000	09109+6331		Discov num	H 5  73		Comp	AB		Coord arcsec 2000	09 10 55.05 +63 30 49.0
Date first	1782		Date last	2015		Obs	13
Pa first	45		Pa last	36		P.A. Now (θ)	36°
Sep first	54.8		Sep last	51.6		Sep. Now (ρ)	51.6"
Mag pri	4.68		Mag sec	11.42		delta mag (ΔM)	6.74		Spectral class	Am (white)
Pri motion ra	+102		Sec motion ra	-021
Pri motion dec	-064		Sec motion dec	-019
Notes	N U (See Notes, Proper motion indicates non-physical)

rPM=1.088 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Tau UMa	14796	09 10 55 +63 30 49	H 5 73 AB	2015	13	36	51.6	4.68	11.42	6.74		<===
Show		14796	09 10 55 +63 30 49	STU 7 AC	2015	6	7	126.5	4.68	11.50	6.82

Triple system
3 visible stars in this system

Precise pa	35.8		Precise sep	51.623		Name	Tau UMa		Constellation	Ursa Major
SAO	14796		HIP	45075		Tycho2	4138-01687-1		Gaia DR2	1043382731705599360
HD	78362		HR	3624		GC	12646		BD	BD+64 723
Bayer	Tau Ursae Majoris		Bayer name	Tau UMa		Flamsteed	14 Ursae Majoris		Flamsteed name	14 UMa
Distance	38.73		Distance ly	126.34

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
09109+6331	H 5 73	AB	2000	7	38	52.1	4.68	10.40	Am	N D	091055.05+633049.0
09109+6331	H 5 73	AB	2003	8	37	52.8	4.68	10.40	Am	N D	091055.05+633049.0
09109+6331	H 5 73	AB	2014	10	36	52.1	4.68	11.42	Am	NU	091055.05+633049.0
09109+6331	H 5 73	AB	2015	13	36	51.6	4.68	11.42	Am	NU	091055.05+633049.0

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