18369+3846 MET 11 A,Ib

Coord 2000	18369+3846		Discov num	MET  11		Comp	A,Ib		Coord arcsec 2000	18 36 56.33 +38 47 01.2
Date first	2002		Date last	2002		Obs	1
Pa first	86		Pa last	85.8		P.A. Now (θ)	85.8°
Sep first	29.9		Sep last	29.93		Sep. Now (ρ)	29.93"
Mag pri	0.09		Mag sec	16.27		delta mag (ΔM)	16.18		Spectral class	A0Va (white)
Pri motion ra	+201		Sec motion ra
Pri motion dec	+288		Sec motion dec
Notes	N U K (See Notes, Proper motion indicates non-physical, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Vega	67174	18 36 56 +38 47 01	H 5 39 AB	2021	85	185	84.5	0.09	9.50	9.41
Show		67174	18 36 56 +38 47 01	STFB 9 AC	2012	7	255	76.0	0.09	11.00	10.91
Show		67174	18 36 56 +38 47 01	STFB 9 AE	2021	25	40	84.3	0.09	9.50	9.41
Show		67174	18 36 56 +38 47 01	MET 11 AF	2002	2	103	22.3	0.09	14.53	14.44
Show		67174	18 36 56 +38 47 01	MET 11 AG	2002	2	92	22.3	0.09	16.55	16.46
Show		67174	18 36 56 +38 47 01	MET 11 AH	2002	2	96	27.7	0.09	18.23	18.14
Show		67174	18 36 56 +38 47 01	MET 11 A,Ia	2002	1	86	29.4	0.09	15.98	15.89
Show		67174	18 36 56 +38 47 01	MET 11 A,Ib	2002	1	86	29.9	0.09	16.27	16.18		<===
Show		67174	18 36 56 +38 47 01	MET 11 AJ	2002	2	335	27.1	0.09	18.30	18.21
Show		67174	18 36 56 +38 47 01	MET 11 A,Ka	2002	1	134	33.9	0.09	16.20	16.11
Show		67174	18 36 56 +38 47 01	MET 11 A,Kb	2002	1	135	34.1	0.09	16.29	16.20
Show		67174	18 36 56 +38 47 01	MBA 2 AL	2002	1	71	27.0	0.09	19.40	19.31
Show		67174	18 36 56 +38 47 01	MBA 2 AM	2002	1	50	29.4	0.09	16.30	16.21
Show		67174	18 36 56 +38 47 01	MBA 2 AN	2002	1	47	27.6	0.09	20.50	20.41
Show		67174	18 36 56 +38 47 01	SMR 33 AO	2012	1	13	89.5	0.09	12.00	11.91
Show		67174	18 36 56 +38 47 01	SMR 33 AP	2015	3	85	221.3	0.09	12.00	11.91
Show		67174	18 36 56 +38 47 01	SMR 33 AQ	2015	3	120	167.6	0.09	12.00	11.91
Show		67174	18 36 56 +38 47 01	SMR 33 AR	2015	3	265	180.5	0.09	12.00	11.91
Show		67174	18 36 56 +38 47 01	SMR 33 AS	2012	1	228	150.0	0.09	12.00	11.91
Show		67174	18 36 56 +38 47 01	SMR 33 AT	2015	2	246	220.8	0.09	12.00	11.91
Show			18 36 56 +38 45 45	STF 3136 BC	2012	5	310	83.7	9.50	11.00	1.50
Show			18 36 50 +38 46 39	STFB 9 CD	2012	3	28	23.5	11.00
Show			18 36 59 +38 47 06	MET 11 Ia,Ib	2002	1	64	0.6	15.98	16.27	0.29
Show			18 36 58 +38 46 38	MET 11 Ka,Kb	2002	1	207	0.8	16.20	16.29	0.09

22-fold system
18 estimated visually detectable stars in this system

Common name	Vega		Constellation	Lyra		SAO	67174		HIP	91262
Tycho2	3105-02070-1		HD	172167		HR	7001		GC	25466
ADS	11510		GL	Gl 721		BD	BD+38 3238		Bayer	Alpha Lyrae
Bayer name	Alp Lyr		Flamsteed	3 Lyrae		Flamsteed name	3 Lyr		FK5	699
Distance	7.68		Distance ly	25.05		Bayer greek	α Lyr

Other names

Wega, FIDIS, HARP STAR

Meaning

she who pounces dive

discov_num	notes	refcode
H 5 39	AB: H V 39. alp Lyr = 3 Lyr = Vega
	Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008
STFB 9	AE: Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008
MET 11	Metchev & Hillenbrand say the F, G, H, I, J, and K components are all	Met2003
	probably optical companions of Vega. Physicality of the Ia,Ib and
	Ka,Kb pairs is unknown.
MBA 2	Macintosh et al. (2003) made a K-band search for extrasolar planets in	MBA2003
	the dust surrounding Vega, using Keck, NIRC2, and AO. The relative
	motions for these 7 objects between 2002 Feb and 2002 Aug were all
	well below expected motions for true companions, leading to the
	conclusion that all these faint companions are background stars.
	Identities of the objects discovered by Metchev et al. and Macintosh
	et al. are as follows:
	MET 11AF = Met2003 object 1 = MBA2003 object 1
	MET 11AG = Met2003 object 2 = MBA2003 object 2
	MET 11AH = Met2003 object 3 = MBA2003 object 3
	MET 11A,Ia = Met2003 object 4
	MET 11A,Ib = Met2003 object 5
	MET 11AJ = Met2003 object 6 = MBA2003 object 7
	MET 11A,Ka = Met2003 object 7
	MET 11A,Kb = Met2003 object 8
	MBA 2AL = MBA2003 object 4
	MBA 2AM = MBA2003 object 5
	MBA 2AN = MBA2003 object 6
H 5 39	AB: Rectilinear solution by Friedman et al. (2012).	USN2012a
STFB 9	AE: Rectilinear solution by Hurowitz et al. (2014).	USN2014b

refcode	metd	author	reference
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008
MBA2003	A w	Macintosh, B.A., Becklin, E.E., Kaisler, D., Konopacky, Q., & Zuckerman, B.	2003ApJ...594..538M
MBA2003		ApJ 594, 538, 2003
MBA2003		(Keck/NIRC2 with AO; search for extrasolar planets in dust disks of eps Eri, Vega)
MBA2003		Bernal, M. (additional DD)	...................
Met2003	Ao j	Metchev, S.A., Hillenbrand, L.A., & White, R.J.	2003ApJ...582.1102M
Met2003		ApJ 582, 1102, 2003
USN2012a	lin -	Friedman, E.A., Mason, B.D., & Hartkopf, W.I.	2012IAUDS.176....1F
USN2012a		Inf. Circ. 176, 1, 2012
USN2014b	lin -	Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D.	2014IAUDS.183....1H
USN2014b		Inf. Circ. 183, 1, 2014

idgroup	discov	author
1	SMR	Schlimmer, J.
56	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18369+3846	MET 11	A,Ib	2002	1	86	29.9	0.02	16.27		N DK	183656.19+384658.8

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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