WDS 21041+0300 WSI 6 AB (HD 200580)

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21041+0300
WSI 6 AB
HD 200580

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Binocular doubles
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

WDS 21041+0300 WSI 6 AB (HD 200580) : NOTES

discov_num	notes	refcode
WSI 6	AB: The 1yr SB with large acceleration has been resolved with speckle.
	However, we cannot exclude that it is a triple system.	Tok2012a
	Horch et al. (2012) confirm that the known double is comprised of at
	least one additional star. Object is a known SB, with period 378 days
	(Latham et al. 1992). Metal-poor ([Fe/H] = -1.01). The wider AB pair	Lat1992
	has an estimated orbital period of 20 years; Jancart et al. (2005)	Jnc2005
	confirm the spectroscopic period with their astrometric orbit of the
	inner pair.	Hor2012b
DSG 6	Aa,Ab: For the Horch et al. (2015) combined solution, spectroscopic
	elements are fixed to those of Latham et al. (1992). Assigned spectral	Lat1992
	types for Aa, Ab, and B are F9V, G9V, and K0V; derived masses for Aa
	and Ab are 1.12 and 0.82 Msun.	Hor2015

REFERENCES

refcode	metd	author	reference
Hor2012b	S j	Horch, E.P., Howell, S.B., Everett, M.E., & Ciardi, D.R.	2012AJ....144..165H
Hor2012b	+orb	AJ 144, 165, 2012
Hor2015	S j	Horch, E.P., van Altena, W.F., Demargue, P., Howell, S.B., Everett, M.E.,	2015AJ....149..151H
Hor2015	+orb	Ciardi, D.R., Teske, J.K., Henry, T.J., & Winters, J.G.
Hor2015		AJ 149, 151, 2015
Jnc2005	orb -	Jancart, S., Jorrisen, A., Babusiaux, C., & Pourbaix, D.	2005A&A...442..365J
Jnc2005		A&A 442, 365, 2005
Lat1992	orb -	Latham, D.N., Mazeh, T., Stefanik, R.P., Davis, R.J., Carney, B.W.,	1992AJ....104..774L
Lat1992		Krymolowski, Y., Laird, J.B., Torres, G., & Morse, J.A.
Lat1992		AJ 104, 774, 1992
Tok2012a	A j	Tokovinin, A., Hartnung, M., Hayward, T.L., & Makarov, V.V.	2012AJ....144....7T
Tok2012a		AJ 144, 7, 2012
Tok2017a	orb+j	Tokovinin, A. & Latham, D.W.	2017ApJ...838...54T
Tok2017a	+St+	ApJ 838, 54, 2017

DISCOVERER

idgroup	discov	author
1	DSG	DSSI-Gemini (see Hor2012b)
1	WSI	Douglass, G.G., Hindsley, R.B., & Worley, C.E.
10	WSI	Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
10	WSI	Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
13	WSI	Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
13	WSI	Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
14	WSI	Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
14	WSI	Hennessy, G.S., Platais, I., et al.
15	WSI	Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
15	WSI	Hennessy, G.S., Rafferty, T.J., et al.
42	WSI	Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
42	WSI	C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
52	WSI	Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
52	WSI	M., Kilian, C.M. & Warner, R.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21041+0300	WSI 6	AB	2012	8	270	0.2	7.50	9.50	F9V		210407.55+025943.4
21041+0300	WSI 6	AB	2014	13	282	0.3	7.50	9.50	F9V K0V	N	210407.55+025943.4
21041+0300	WSI 6	AB	2015	18	291	0.3	7.50	9.50	F9V+K0V	NO	210407.55+025943.4
21041+0300	WSI 6	AB	2016	20	294	0.2	7.50	9.50	F9V+K0V	NO	210407.38+025940.1
21041+0300	WSI 6	AB	2017	24	303	0.2	7.50	9.50	F9V+K0V	NO	210407.38+025940.1
21041+0300	WSI 6	AB	2018	31	314	0.2	7.50	9.50	F9V+K0V	NO	210407.38+025940.1
21041+0300	WSI 6	AB	2019	32	331	0.1	7.50	9.50	F9V+K0V	NO	210407.38+025940.1
21041+0300	WSI 6	AB	2020	33	14	0.1	7.50	9.50	F9V+K0V	NO	210407.38+025940.1
21041+0300	WSI 6	AB	2021	35	53	0.1	7.50	9.50	F9V+K0V	NO	210407.38+025940.1

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