19264+4928 YSC 134 (HD 183255)

19^h 26^m 25.98^s +49° 27' 55.1" P.A. 50.00 sep 0.0 mag 8.40,9.40 Sp K2V+K4.5V dist. 25.01 pc (81.58 l.y.)

Coord 2000	19264+4928	Discov num	YSC 134	Comp		Coord arcsec 2000	19 26 25.98 +49 27 55.1
Date first	2008	Date last	2015	Obs	15
Pa first	202	Pa last	49.6	P.A. Now (θ)	49.6°
Sep first	0.0	Sep last	0.024	Sep. Now (ρ)	0.024"
Mag pri	8.40	Mag sec	9.40	delta mag (ΔM)	1	Spectral class	K2V+K4.5V (yellow-orange/yellow-orange)
Pri motion ra	+457	Sec motion ra
Pri motion dec	+714	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

ORBITAL ELEMENTS

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

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

WDS 19264+4928 YSC 134 (HD 183255) : NOTES

discov_num	notes	refcode
YSC 134	Metal-poor SB2, spectroscopic orbit published by Tokovinin (1991).	Tok1991
	An astrometric orbit was deduced from Hipparcos data by Jancart et al.	Jnc2005
	(2005). The period derived for the visual orbit matches both the
	spectroscopic and astrometric solutions within the uncertainty, and
	other orbital parametrs are in reasonable agreement with the Tokovinin
	solution. The updated Hipparcos parallax (39.98 +/- 0.73 mas),
	combined with the orbit, yields a mass sum of 2.0 +/- 0.3 Msun. The
	composite spectral type is K3V; a magnitude difference of 0.8 mags
	makes the component spectral types roughly K1V + K4V, which suggests
	a mass sum of 1.2-1.5 Msun, accounting for the lower metallicity.	Hor2012b
	For the Horch et al. (2015) combined solution, spectroscopic elements
	are fixed to those of Halbwachs et al. (2012). Assigned spectral	HJL2012
	types are K2V and K4.5V; derived masses 0.74 and 0.68 Msun.	Hor2015
	Orbital parallax is 42.01 +/- 1.08 mas. Mass of the primary is
	0.695 +/- 0.066 \msun. Mass of the secondary is 0.621 +/- 0.058 \msun.	Doc2018h

REFERENCES

refcode	metd	author	reference
Doc2018h	orb -	Docobo, J.A., Campo, P.P., Gomez, J. & Horch, E.P.	2018AJ....156..185D
Doc2018h	+not	AJ 156, 185, 2018
HJL2012	orb -	Halbwachs, J.L., Arenou, F., Famaey, B., et al.	.
HJL2012		SF2A-2012: Proc. Annual Meeting of the French Society of Astronomy & Astrophysics
HJL2012		87, ed. S. Boissier et al. (Paris: Soc. Francaise d'Astron. et d'Astrop.)
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
Tok1991	orb -	Tokovinin, A.A.	1991A&AS...91..497T
Tok1991		A&AS 91, 497, 1991

DISCOVERER

idgroup	discov	author
1	YSC	Yale-Southern Connecticut (from additional DD list - see HOR)

WDS HISTORIC DATA

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WDS 19264+4928 YSC 134 (HD 183255) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19264+4928 YSC 134 (HD 183255) : MEASURES

No records found.

WDS 19264+4928 (HD 183255) : VIRTUAL EYEPIECE

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WDS 19264+4928 (HD 183255) : ALADIN DSS IMAGE @

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

Error -22130
Not valid ID.

Error -22130
Not valid ID.
Error -27220
Not valid ID.