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Doubles in this session

Current system

19594+3206
A 378

Nearby doubles

11' : 19589+3158
SEI 757

14' : 19593+3219
HJ 1461

14' : 19598+3219
TDT1905

16' : 19585+3217
RAO 424AB

18' : 20007+3211
TDT1911AB

18' : 19597+3150
BU 1133

24' : 19583+3147
KU 126

27' : 20014+3206
COU1472

27' : 19597+3140
SEI 773

27' : 19580+3145
TDT1884

28' : 19572+3203
KPP1143

30' : 19588+3138
SEI 756

31' : 20007+3232
ES 2430AB

35' : 20021+3204
BRT 274

35' : 20020+3213
TDS1034

38' : 19565+3156
J 782

39' : 20022+3154
SEI 802

39' : 19591+3128
SEI 758

39' : 20016+3233
TDT1920

41' : 20007+3130
BRT 273

42' : 20021+3144
SEI 799

42' : 20019+3139
AG 245

43' : 20014+3240
SEI 792

45' : 20028+3158
ES 359AB

48' : 20021+3135
SEI 798

48' : 20004+3252
TDT1910

Selections

Binocular doubles

Quadruple Systems

Multiple Systems

Neglected List I

Neglected List II

Herschel, J.F.W.

19594+3206 A 378

19^h 59^m 22.02^s +32° 06' 28.0" P.A. 291.60 sep 0.9 mag 8.48,8.98 Sp G5

Coord 2000	19594+3206		Discov num	A 378		Comp			Coord arcsec 2000	19 59 22.02 +32 06 28.0
Date first	1902		Date last	2016		Obs	44
Pa first	319		Pa last	294		P.A. Now (θ)	291.6°
Sep first	0.4		Sep last	1.0		Sep. Now (ρ)	0.86"
Mag pri	8.48		Mag sec	8.98		delta mag (ΔM)	0.5		Spectral class	G5 (yellow)
Pri motion ra	+002		Sec motion ra	+002
Pri motion dec	-013		Sec motion dec	-013
Notes	O (Orbital solution)

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

OTHER CATALOGS AND DESIGNATIONS

Precise pa	293.6		Precise sep	0.974		Constellation	Cygnus		SAO	69212
Tycho2	2674-01000-1		Gaia DR2	23703611136		HD	189549		ADS	13212
last precise pa	293.6		last precise sep	0.974

ORBITAL ELEMENTS

Period (P)	591.302y	± 325.9371	Periastron (T)	2060.8237y	± 166.8133	Semi-major axis (a)	1.57387a	± 0.84266
Eccentricity (e)	0.70961	± 0.26477	Inclination (i)	95.414°	± 9.554	Longitude of periastron (ω)	256.252°	± 32.532
Node (Ω)	108.095°	± 7.724	Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation	2013

label	rho	theta
2000	0.874	294.2
2001	0.875	294.1
2002	0.876	293.9
2003	0.877	293.8
2004	0.878	293.7
2005	0.878	293.6
2006	0.878	293.4
2007	0.878	293.3
2008	0.878	293.2
2009	0.878	293.0
2010	0.877	292.9
2011	0.876	292.8
2012	0.875	292.6
2013	0.874	292.5
2014	0.872	292.4
2015	0.870	292.2
2016	0.868	292.1
2017	0.866	292.0
2018	0.863	291.8
2019	0.860	291.7
2020	0.856	291.6
2021	0.853	291.4
2022	0.848	291.3
2023	0.844	291.2
2024	0.839	291.0
2025	0.834	290.9
2026	0.828	290.7
2027	0.821	290.6
2028	0.815	290.4
2029	0.807	290.3
2030	0.800	290.1

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

grafico orbita

wds19594%2B3206a.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
19594+3206	A 378		2005	42	293	0.9	8.48	8.98	G5		195922.02+320628.0
19594+3206	A 378		2007	44	294	0.9	8.48	8.98	G5		195922.02+320628.0
19594+3206	A 378		2009	45	292	0.9	8.48	8.98	G5		195922.02+320628.0
19594+3206	A 378		2012	41	291	0.8	8.48	8.98	G5		195922.02+320628.0
19594+3206	A 378		2013	42	291	0.9	8.48	8.98	G5		195922.02+320628.0
19594+3206	A 378		2016	43	294	1.0	8.48	8.98	G5		195922.02+320628.0

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