19074+3230 STF 2461 AD

Coord 2000	19074+3230		Discov num	STF2461		Comp	AD		Coord arcsec 2000	19 07 25.58 +32 30 06.2
Date first	1782		Date last	2015		Obs	32
Pa first	296		Pa last	291.3		P.A. Now (θ)	291.3°
Sep first	137.5		Sep last	137.808		Sep. Now (ρ)	137.808"
Mag pri	5.26		Mag sec	8.99		delta mag (ΔM)	3.73		Spectral class	F0V (yellow-white)
Pri motion ra	+122		Sec motion ra	-006
Pri motion dec	+032		Sec motion dec	-005
Notes	N (See Notes)

rPM=1.056 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	17 Lyr	67835	19 07 26 +32 30 06	STF 2461 AB	2017	70	281	3.2	5.26	9.10	3.84
Show		67835	19 07 26 +32 30 06	STF 2461 AC	2015	23	54	292.4	5.26	10.80	5.54
Show		67835	19 07 26 +32 30 06	STF 2461 AD	2015	32	291	137.8	5.26	8.99	3.73		<===
Show		67835	19 07 26 +32 30 06	STF 2461 AE	2015	24	120	140.3	5.26	10.90	5.64
Show		67835	19 07 26 +32 30 06	STF 2461 AF	2015	23	352	167.1	5.26	10.59	5.33
Show		67835	19 07 26 +32 30 06	STF 2461 AI	2015	6	41	38.6	5.26	13.50	8.24
Show			19 07 43 +32 32 44	KUI 90 Ca,Cb	2019	66	248	0.1	10.80	11.40	0.60	Y
Show			19 07 43 +32 32 44	STF 2461 CE	2014	15	206	266.0	10.80	10.90	0.10
Show			19 07 43 +32 32 44	STF 2461 CG	2014	7	185	181.9	10.80	12.90	2.10
Show			19 07 43 +32 32 44	STF 2461 CH	2014	5	295	57.3	10.80	13.00	2.20
Show			19 07 43 +32 32 44	STF 2461 CR	2014	5	225	114.9	10.80	14.60	3.80
Show			19 07 35 +32 28 58	STF 2461 EG	2015	14	59	115.8	10.90	12.90	2.00

11-fold system
10 estimated visually detectable stars in this system

Constellation	Lyra		SAO	67835		HIP	93917		Tycho2	2644-02411-1
Gaia DR2	2042936967135806848		HD	178449		HR	7261		GC	26340
ADS	12061		BD	BD+32 3326		Flamsteed	17 Lyrae		Flamsteed name	17 Lyr
Distance	41.58		Distance ly	135.63

discov_num	notes	refcode
STF2461	17 Lyr. Mt. Wilson spectral type A is A9n.
	A is a spectroscopic binary.
	AC: Proper motion of C +1219,+1114. Mt. Wilson spectral type is M3.
	Proper motion A : +124+030, E : -004-006, G : -003+007, H : -017-013.
	AC: Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008
KUI 90	Ca: Combined solution from astrometry, spectroscopy, and parallax by
	Segransan et al. (2000). Solution yields mass and orbital parallax	Sgr2000
	determination.
STF2461	AB: H 2 68.	MEv2010
	AC, CE: Rectilinear solutions by Friedman et al. (2012).	USN2012a

refcode	metd	author	reference
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Sgr2000	A j	Segransan, D., Delfosse, X., Forveille, T., Beuzit, J.-L., Udry, S., Perrier, C.,	2000A&A...364..665S
Sgr2000	+orb	& Mayor, M.
Sgr2000		A&A 364, 665, 2000
USN2012a	lin -	Friedman, E.A., Mason, B.D., & Hartkopf, W.I.	2012IAUDS.176....1F
USN2012a		Inf. Circ. 176, 1, 2012

idgroup	discov	author
1	KUI	Kuiper, G.P., Schilt, van den Bos, W., and van Gent
63	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19074+3230	STF2461	AD	2002	24	292	135.3	5.26	8.99		N D	190725.58+323006.2
19074+3230	STF2461	AD	2009	25	292	137.3	5.26	8.99		N D	190725.58+323006.2
19074+3230	STF2461	AD	2012	27	291	137.3	5.26	8.99		N D	190725.58+323006.2
19074+3230	STF2461	AD	2013	29	291	136.8	5.26	8.99	F0V	N	190725.58+323006.2
19074+3230	STF2461	AD	2014	31	292	137.8	5.26	8.99	F0V	N	190725.58+323006.2
19074+3230	STF2461	AD	2015	32	291	137.8	5.26	8.99	F0V	N	190725.58+323006.2

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Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	12/08/14	Robert		138.00	0.96	291.00	0.25		2

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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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