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Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18581+4711 AG 366 (HD 176465)

18^h 58^m 03.46^s +47° 11' 30.1" P.A. 183.00 sep 1.4 mag 8.54,8.67 Sp G2V+G8V dist. 49.55 pc (161.63 l.y.)

Coord 2000	18581+4711	Discov num	AG 366	Comp		Coord arcsec 2000	18 58 03.46 +47 11 30.1
Date first	1907	Date last	2019	Obs	50
Pa first	229	Pa last	182.6	P.A. Now (θ)	182.6°
Sep first	2.4	Sep last	1.411	Sep. Now (ρ)	1.411"
Mag pri	8.54	Mag sec	8.67	delta mag (ΔM)	0.13	Spectral class	G2V+G8V (yellow/yellow)
Pri motion ra	-040	Sec motion ra	-040
Pri motion dec	+012	Sec motion dec	+012
Notes	N O V (See Notes, Orbital solution, Proper motion indicates physical)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 176465	Constellation	Lyra	SAO	47960	HIP	93108
Tycho2	3545-01998-1	Gaia DR2	2131416557598645632	HD	176465	BD	BD+46 2592
Distance	49.55	Distance ly	161.63

ORBITAL ELEMENTS

Period (P)	1260.888y	Periastron (T)	2078.3088y	Semi-major axis (a)	2.68488a
Eccentricity (e)	0.656	Inclination (i)	145.5°	Longitude of periastron (ω)	75.1°
Node (Ω)	180.5°	Notes	n	Reference	WSI2021
Equinox		Last observation	2018	Grade	5	(1=Definitive, 9=Indet.)

label	theta	rho
2000	196.1	1.573
2001	195.6	1.563
2002	195.1	1.553
2003	194.5	1.543
2004	194.0	1.534
2005	193.4	1.524
2006	192.9	1.513
2007	192.3	1.503
2008	191.8	1.493
2009	191.2	1.483
2010	190.6	1.473
2011	190.0	1.462
2012	189.4	1.452
2013	188.8	1.442
2014	188.2	1.431
2015	187.5	1.420
2016	186.9	1.410
2017	186.2	1.399
2018	185.6	1.388
2019	184.9	1.377
2020	184.2	1.367
2021	183.5	1.356
2022	182.8	1.345
2023	182.1	1.333
2024	181.4	1.322
2025	180.7	1.311
2026	179.9	1.300
2027	179.1	1.289
2028	178.4	1.277
2029	177.6	1.266
2030	176.8	1.254

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

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

WDS 18581+4711 AG 366 (HD 176465) : NOTES

discov_num	notes	refcode
AG 366	Astroseismology determines Mass and Radius for A(B) as 0.95+/-0.02	XXX2017b
	(0.93+/-0.01) \msun and 0.93+/-0.01 (0.89+/-0.01) \rsun and an age of
	3.0+/-0.5 Gyrs for both stars.

REFERENCES

refcode	metd	author	reference
WSI2021	Su j	Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,	2021AJ....162...53M
WSI2021	+Cu	M., Kilian, C.M. & Warner, R.
WSI2021		AJ 162, 53, 2021
XXX2017b	not -	White, T.R., Benomar, O., Silva Aguirre, V., Ball, W.H., Bedding, T.R., Chaplin,	2017A&A...601A..82W
XXX2017b		W.J., Christensen-Dalsgaard, J., Garcia, R.A., Gizon, L., Stello, D., Aigrain, S.,
XXX2017b		Anita, H.M., Appourchaux, T., Bazot, M., Campante, T.L., Creevey, O.L., Davies,
XXX2017b		G.R., Elsworth, Y.P., Gaulme, P., Handberg, R., Hekker, S., Houdek, G., Howe, R.,
XXX2017b		Huber, D., Karoff, C., Marques, J.P., Mathur, S., McQuillan, A., Metcalfe, T.S.,
XXX2017b		Mosser, B., Nielsen, M.B., Regulo, C., Salabert, D. & Stahn, T.
XXX2017b		A&A 601, 82, 2017

DISCOVERER

idgroup	discov	author
1	AG	Astronomische Gesellschaft (see also ref codes KR and WFD)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18581+4711	AG 366		2005	24	192	1.5	8.54	8.67	G0	D	185803.46+471130.1
18581+4711	AG 366		2007	30	191	1.5	8.54	8.67	G0	D	185803.46+471130.1
18581+4711	AG 366		2009	31	190	1.5	8.54	8.67	G0	D	185803.46+471130.1
18581+4711	AG 366		2013	33	188	1.5	8.54	8.67	G0		185803.46+471130.1
18581+4711	AG 366		2015	32	186	1.4	8.54	8.67	G0		185803.46+471130.1
18581+4711	AG 366		2018	42	185	1.4	8.54	8.67	G0	N	185803.46+471130.1
18581+4711	AG 366		2019	48	183	1.4	8.54	8.67	G2V+G8V	NV	185803.46+471130.1

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

WDS 18581+4711 AG 366 (HD 176465) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18581+4711 AG 366 (HD 176465) : MEASURES

No records found.

WDS 18581+4711 (HD 176465) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 18581+4711 (HD 176465) : ALADIN DSS IMAGE @ 18^h 58^m 03.46^s +47° 11' 30.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18581+4711 AG 366 (HD 176465) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		18581+4711	AG 366		183	1.4
Show		18583+4704	DEA 180		193	8.9	8
Show		18590+4710	KOI 21		57	2.2	10
Show		18561+4725	DEA 265		333	10.9	24
Show		18555+4713	COU2121		336	1.3	27
Show		18576+4738	DEA 327		114	13.8	28
Show		18570+4741	KOI 532		232	1.0	32
Show		18549+4712	KOI1937		243	2.3	33
Show		18545+4712	KOI 472		206	1.1	37
Show		19014+4656	HJ 1362	AB	289	46.9	38
Show		19014+4656	WAL 101	AC	274	201.8	38
Show		18549+4734	DEA 460		287	36.6	40
Show		18549+4737	RAO 401		309	3.7	41
Show		18547+4649	KOI5736		304	0.8	41
Show		18598+4634	KOI 250		275	3.4	42
Show		18553+4743	JKA 15		155	27.6	43
Show		18556+4747	KOI 336		261	3.4	44
Show		18584+4627	KOI2545		106	5.7	45
Show		18537+4704	KOI3234		119	0.1	45
Show		18551+4748	KOI 748	AB	75	3.0	48
Show		18551+4748	KOI 748	AC	54	3.6	48
Show		18533+4710	KOI2926		16	0.3	49
Show		18588+4623	KOI7205		47	0.9	50
Show		18590+4622	KOI2535		21	1.6	51
Show		19003+4625	KOI2706	AB	166	1.7	52
Show		18548+4752	KOI 747		177	3.9	52
Show		18579+4615	KOI2057		294	5.8	57
Show		19005+4620	DEA 142		111	7.5	58
Show		18589+4612	KOI2637		313	0.3	60
Show		19028+4750	DEA 365		331	16.9	63
Show		19019+4623	DEA 399		344	20.4	63
Show		18541+4806	KOI1311		176	0.4	68
Show		18518+4734	KOI 289	AB	233	0.0	68
Show		18518+4734	KOI 289	AC	52	3.3	68
Show		18518+4734	KOI 289	AD	88	5.9	68
Show		18514+4721	JKA 8		186	12.7	69
Show		19014+4611	DEA 147		182	7.4	70
Show		18544+4610	ES 1265		302	5.8	72
Show		18511+4700	DEA 394		191	19.6	72
Show		18591+4821	DEA 449		143	30.1	72
Show		18515+4647	TDT1089		90	0.7	72
Show		19019+4609	DEA 300		133	12.2	75
Show		18597+4558	KOI 249		28	4.3	76
Show		18511+4736	TDT1085		104	2.7	76
Show		18512+4644	HDS2674		118	0.2	76
Show		18566+4557	KOI6202		322	0.8	77
Show		19055+4701	KOI4292		30	1.9	78
Show		18550+4822	KOI2754	AB	260	0.8	78
Show		18550+4822	KOI2754	AC	313	2.4	78
Show		18532+4811	RAO 173	AB	350	1.9	78
Show		18517+4758	KOI4366	AB	303	2.4	80

WDS 18581+4711 : COMPONENTS

	A
B	pa=181.8° sep=1.41"

18581+4711 A

Componente originario normalizzato	AB	Name	HD 176465	Coord arcsec 2000	185803.46+471130.1	Mag	8.54
Spectral class	G2V (yellow)	PmRA	-40.00	PmDE	12.0	SAO	47960
HIP	93108	Tycho2	3545-01998-1	HD	176465	BD	BD+46 2592

Tycho2

Tycho2	3545-01998-1	Pflag	P	RAmdeg	284.51443327	DEmdeg	47.19169258
PmRA	-40.1	PmDE	12.3	E RAmdeg	7	E DEmdeg	7
E pmRA	4.6	E pmDE	4.1	EpRAm	1991.57	EpDEm	1991.59
Num	2	Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	9.193	E BTmag	0.018	VTmag	8.537
E VTmag	0.012	Prox	17	TYC	T	HIP	93108
CCDM	A	RAdeg	284.51466861	DEdeg	47.19184500	EpRA 1990	1.60
EpDE 1990	1.62	E RAdeg	7.0	E DEdeg	6.7	Posflg	D
Corr	0.0

SAO

SAO	47960	DelFlag		RA1950		PmRA1950	-0.0067
DE1950		PmDE1950	0.001	Vmag	8.1	SpType	G0
Double code		Source	3	CatNum	1374	DM	BD+46 2592
DMcomp		BDsup		HD	176465	M HD	0
GC		RA1950rad	4.95962563	DE1950rad	0.82244584	PmRA2000	-0.0062
PmDE2000	0

Hipparcos

Catalog	H	HIP	93108	Proxy	H	RAhms	18 58 03.52
DEdms	+47 11 30.6	Vmag	7.82	VarFlag		R Vmag	H
RAdeg	284.515	DEdeg	47.1918	AstroRef	A	Plx	19.09
CCDM	18581+4711	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	200	Rho	1.677	HD	176465	BD	BD+46 2592
CD		CP		Dm number	+46 2592	VIred	0.67
SpType	G0	R SpType		Coord arcsec 2000	185803.52+471130.6

Hipparcos 2

HIP	93108	Sn	15	So	3	Nc	2
RArad	4.9657179471	DErad	0.8236530694	Plx	20.18	PmRA	-69.22
PmDE	0.72	E RArad	0.65	E DErad	0.66	E Plx	0.74
E pmRA	1.04	E pmDE	1.03	Hpmag	7.9442	E Hpmag	0.0012
SHp	0.012	VA	0	BV	0.605	E BV	0.018
VI	0.67

CCDM

Ccdm	18581+4711	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.56	DDEs	29.8
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	8.8	Sp	G0	PmNote	*
PmRA	-63	PmDE	3	Dm number	+46 2592	Cat1	BD
Name2	+47 1374	Cat2	AGK2/3	HD	176465	M HD
ADS BDS	A11899	M ADS BDS		N IDS		IDS	18553N4703A
HIC	93108

18581+4711 B

Componente originario normalizzato	AB	Coord arcsec 2000	185803.46+471128.7	Mag	8.67	Spectral class	G8V (yellow)
PmRA	-40.00	PmDE	12.0	HIP	93108	Tycho2	3545-01998-2
Calc delta mag	0.13	Calc coord	yes

Tycho2

Tycho2	3545-01998-2	Pflag	P	RAmdeg	284.51443327	DEmdeg	47.19169258
PmRA	-40.1	PmDE	12.3	E RAmdeg	7	E DEmdeg	7
E pmRA	4.6	E pmDE	4.1	EpRAm	1991.57	EpDEm	1991.59
Num	2	Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	9.394	E BTmag	0.019	VTmag	8.674
E VTmag	0.014	Prox	17	TYC	T	HIP	93108
CCDM	B	RAdeg	284.51443389	DEdeg	47.19141000	EpRA 1990	1.60
EpDE 1990	1.62	E RAdeg	7.9	E DEdeg	7.6	Posflg	D
Corr	0.0

Hipparcos

Catalog	H	HIP	93108	Proxy	H	RAhms	18 58 03.52
DEdms	+47 11 30.6	Vmag	7.82	VarFlag		R Vmag	H
RAdeg	284.515	DEdeg	47.1918	AstroRef	A	Plx	19.09
CCDM	18581+4711	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	200	Rho	1.677	HD	176465	BD	BD+46 2592
CD		CP		Dm number	+46 2592	VIred	0.67
SpType	G0	R SpType		Coord arcsec 2000	185803.52+471130.6

Hipparcos 2

HIP	93108	Sn	15	So	3	Nc	2
RArad	4.9657179471	DErad	0.8236530694	Plx	20.18	PmRA	-69.22
PmDE	0.72	E RArad	0.65	E DErad	0.66	E Plx	0.74
E pmRA	1.04	E pmDE	1.03	Hpmag	7.9442	E Hpmag	0.0012
SHp	0.012	VA	0	BV	0.605	E BV	0.018
VI	0.67

CCDM

Ccdm	18581+4711	RComp		Comp	B	Note1
Note2		Discov num	AG	DRAs		DDEs
R dRAs		Year	1937	Theta	221	Rho	2.0
Obs	8	Vmag	8.9	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A11899	M ADS BDS		N IDS		IDS	18553N4703B
HIC	93108