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Doubles in this session

Current system

19585+3317
STF2606AB

Nearby doubles

14' : 19596+3321
SEI 769

14' : 19596+3318
BEW 4

17' : 19583+3333
HO 582AB

23' : 19569+3327
TDT1871

29' : 19583+3345
ELS 8AB

30' : 19582+3346
SEI 753

35' : 20004+3252
TDT1910

35' : 20008+3337
SEI 784

38' : 19579+3353
COU1805

40' : 19559+3256
SEI 732

42' : 19562+3346
GRV 298

44' : 20010+3346
SEI 785

45' : 20019+3303
HO 586

45' : 20021+3308
SEI 797

46' : 20013+3346
SEI 789

46' : 19597+3359
FRT 2AB

46' : 19566+3238
SEI 738

48' : 20022+3332
SEI 801

48' : 20024+3320
SEI 803

53' : 20014+3240
SEI 792

53' : 20007+3232
ES 2430AB

56' : 20025+3341
HO 117AB

56' : 19554+3355
TDT1850

58' : 20016+3358
SEI 794

58' : 19593+3219
HJ 1461

58' : 20027+3340
HO 118AB

Selections

Binocular doubles

Quadruple Systems

Multiple Systems

Neglected List I

Neglected List II

Herschel, J.F.W.

19585+3317 STF2606AB

19^h 58^m 32.66^s +33° 16' 38.8" P.A. 147.40 sep 0.6 mag 7.74,8.43 Sp F5IV dist. 78.43 pc (255.84 l.y.)

Coord 2000	19585+3317		Discov num	STF2606		Comp	AB		Coord arcsec 2000	19 58 32.66 +33 16 38.8
Date first	1832		Date last	2017		Obs	88
Pa first	131		Pa last	146		P.A. Now (θ)	147.4°
Sep first	1.2		Sep last	0.7		Sep. Now (ρ)	0.64"
Mag pri	7.74		Mag sec	8.43		delta mag (ΔM)	0.69		Spectral class	F5IV (yellow-white)
Pri motion ra	+057		Sec motion ra	+057
Pri motion dec	+051		Sec motion dec	+051
Notes	O (Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

19585+3317 SYSTEM COMPONENTS

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69186	19585+3317	STF2606	AB	1832	2017	88	147	0.6	7.74	8.43	0.69	Y	<===
Show		69186	19585+3317	GUI 29	AC	1912	2015	13	274	168.6	7.75	9.60	1.85

Triple system
3 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	146.2		Precise sep	0.658		Constellation	Cygnus		SAO	69186
HIP	98315		Tycho2	2674-05369-1		Gaia DR2	23260508672		HD	189378
ADS	13196		BD	BD+32 3651		Distance	78.43		Distance ly	255.84
last precise pa	146.2		last precise sep	0.658

ORBITAL ELEMENTS

Period (P)	455y		Periastron (T)	1745.7y		Semi-major axis (a)	1.081a
Eccentricity (e)	0.69		Inclination (i)	82.4°		Longitude of periastron (ω)	240.5°
Node (Ω)	127.4°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2012

label	rho	theta
2000	0.770	143.9
2001	0.764	144.0
2002	0.758	144.2
2003	0.752	144.3
2004	0.745	144.5
2005	0.739	144.7
2006	0.733	144.8
2007	0.727	145.0
2008	0.720	145.2
2009	0.714	145.3
2010	0.708	145.5
2011	0.701	145.7
2012	0.695	145.9
2013	0.688	146.0
2014	0.682	146.2
2015	0.675	146.4
2016	0.669	146.6
2017	0.662	146.8
2018	0.656	147.0
2019	0.649	147.2
2020	0.643	147.4
2021	0.636	147.7
2022	0.630	147.9
2023	0.623	148.1
2024	0.616	148.3
2025	0.610	148.6
2026	0.603	148.8
2027	0.596	149.1
2028	0.590	149.3
2029	0.583	149.6
2030	0.576	149.8

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita

wds19585%2B3317a.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19585+3317	STF2606	AB	2007	97	145	0.7	7.74	8.43	F5IV	D	195832.66+331638.8
19585+3317	STF2606	AB	2009	99	145	0.7	7.74	8.43	F5IV	D	195832.66+331638.8
19585+3317	STF2606	AB	2012	86	147	0.7	7.74	8.43	F5IV		195832.66+331638.8
19585+3317	STF2606	AB	2013	87	145	0.8	7.74	8.43	F5IV	O	195832.66+331638.8
19585+3317	STF2606	AB	2017	88	146	0.7	7.74	8.43	F5IV	O	195832.66+331638.8
19585+3317	STF2606	AB	2018	90	147	0.7	7.74	8.43	F5IV	O	195832.66+331638.8

If you need more information about this double, apply for a data request form to the WDS.