11118+4250 BUP 136 BC

Coord 2000	11118+4250		Discov num	BUP 136		Comp	BC		Coord arcsec 2000	11 11 37.64 +42 49 03.3
Date first	1908		Date last	2010		Obs	7
Pa first	336		Pa last	344.2		P.A. Now (θ)	344.2°
Sep first	132.5		Sep last	151.44		Sep. Now (ρ)	151.44"
Mag pri	8.26		Mag sec	14.02		delta mag (ΔM)	5.76		Spectral class	G5 (yellow)
Pri motion ra	-120		Sec motion ra	-002
Pri motion dec	-244		Sec motion dec	+005
Notes	N (See Notes)

rPM=1.013 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 97194	43641	11 11 49 +42 49 56	ENG 45 AB	2016	24	247	135.0	7.24	8.30	1.06
Show		43639	11 11 38 +42 49 03	BUP 136 BC	2010	7	344	151.4	8.26	14.02	5.76		<===

Triple system
3 estimated visually detectable stars in this system

Constellation	Ursa Major		SAO	43639		HIP	54681		Tycho2	3012-01676-1
Gaia DR2	777967702865481344		HD	97167		GC	15377		BD	BD+43 2088
Distance	48.43		Distance ly	157.98

discov_num	notes	refcode
ENG 45	AB: NLTT 26576/26564	Chm2004
	AB: HJL 140.	HJL1986
	AB: SHY 221. Bayesian analysis by Shaya & Olling (2011) indicates very	Shy2011
	high (near 100%) probability pair is physical.
	AB: A is possibly astrometric binary.	Tok2014d

refcode	metd	author	reference
Chm2004	E -	Chaname, J. & Gould, A.	2004ApJ...601..289C
Chm2004		ApJ 601, 289, 2004
Chm2004		(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004		versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004		identical to discovery observations - predominantly close pairs - were assumed
Chm2004		not new observations, so not included in WDS. Similar concerns when primary and
Chm2004		secondary magnitudes or proper motions were the same.)
HJL1986	Pa -	Halbwachs, J.L.	1986A&AS...66..131H
HJL1986		A&AS 66, 131, 1986
HJL1986		(Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986		only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
Shy2011	-	Shaya, E.J. & Olling, R.	2011ApJS..192....2S
Shy2011		ApJS 192, 2, 2011
Shy2011		(Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011		added to WDS only if probability 90% or greater.)
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014

idgroup	discov	author
1	BUP	Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913)
1	ENG	changed from EN to ENG and that for Engelhardt from ENG to ENH. This has led to

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
11118+4250	BUP 136	BC	1908	1	336	132.5	8.26	12.80	G5		111137.64+424903.3
11118+4250	BUP 136	BC	2002	4	344	149.9	8.26	14.02	G5	N	111137.64+424903.3
11118+4250	BUP 136	BC	2010	7	344	151.4	8.26	14.02	G5	N W	111137.64+424903.3

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