WDS 21044-1951 FIN 328 (Eta Cap) : NOTES
 
 
discov_num notes refcode
FIN 328 eta Cap = 22 Cap.
Spectral types and masses of components assigned by ten Brummelaar et
al., based on adaptive optics observations. TtB2000
Ruymaekers & Nys (1955) noted discrepancies in the orbit of Zulevic Ruy1995
(1993), so calculated orbital elements from the Thiele-Innes elements Zul1993b
originally given.
This system has a Delta m of about 1.7 +/- 0.7 magnitudes, as
determined from lunar occultation measures (Evans & Edwards 1983). Evn1983a
Masses and bolometric magnitudes are derived for the two components
of this system, based on assumed spectral types and available
parallaxes. Msn1999a
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 2.91 +/- 1.61, 3.24, and 3.25 Msun, respectively. Mlk2012
Docobo & Andrade (2013) derive a dynamical parallax of 19.49 +/- 0.29
mas and component masses 2.03 +/- 0.12 and 1.21 +/- 0.07 Msun (for
spectral type A5V) or 20.46 +/- 0.32 mas, 1.75 +/- 0.11 and 1.05 +/-
0.06 Msun (for A3IV). See paper for extensive notes on this system. Doc2013d
 
 
REFERENCES
 
 
refcode metd author reference
Doc2013d orb - Docobo, J.A. & Andrade, M. 2013MNRAS.428..321D
Doc2013d MNRAS 428, 321, 2013
Evn1983a O j Evans, D.S. & Edwards, D.A. 1983AJ.....88.1845E
Evn1983a AJ 88, 1845, 1983
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Msn1999a Su j Mason, B.D., Douglass, G.G., & Hartkopf, W.I. 1999AJ....117.1023M
Msn1999a +orb AJ 117, 1023, 1999
Msn2023 St j Mason, B.D., Tokovinin, A., Mendez, R.A. & Costa, E. 2023AJ....166..139M
Msn2023 +orb
Ruy1995 orb - Ruymaekers, G. & Nys, O. 1995IAUDS.126....1R
Ruy1995 Inf. Circ. 126, 1, 1995
TtB2000 Ac j ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., 2000AJ....119.2403T
TtB2000 Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr.
TtB2000 AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO)
Zul1993b orb - Zulevic, D.J. 1993BOBeo.147...63Z
Zul1993b Bull. Obs. Astron. Belgrade #147, 63, 1993
 
 
DISCOVERER
 
 
discov author
DOC Docobo, J. (Docobo et al.)
DOC Docobo, J.A., Andrade, M., Ling, J.F., Prieto, C., Tamazian, V.S., Balega, Yu.Yu.,
DOC Blanco, J., Maximov, A.F., et al.
DOC Docobo, J.A., Tamazian, V.S., Andrade, M., Ling, J.F., Balega, Y.Y.,
DOC Lahulla, J.F., & Maximov, A.
DOC Docobo, J.A., Tamazian, V.S., Balega, Y.Y., Andrade, M., Schertl, D., Weigelt, G.,
DOC Campo, P., & Palacios, M.
DOC Docobo, J.A., Tamazian, V.S., Andrade, M., Ling, J.F., Balega, Y.Y.,
DOC Lahulla, J.F., & Maximov, A.
DOC Highlights of Spanish Astrophysics V, Ap&SS Proc. (Springer-Verlag, Berlin),
DOC p 491, 2010 (no data)
EVN Evans, D.S., Africano, J.L., Fekel, F.C., Montemayor, M., Palm, C.,
EVN Silverberg, E., Van Citters, W., & Wiant, J.
MSN Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G.,
MSN ten Brummelaar, T.A., & McAlister, H.A.
MSN Mason, B.D., Martin, C., Hartkopf, W.I., Barry, D.J., Germain, M.E.,
MSN Douglass, G.G., Worley, C.E., ten Brummelaar, T.A., et al.
MSN Mason, B.D., Hartkopf, W.I., Raghavan, D., Subasavage, J.P., Roberts, L.C., Jr.,
MSN Turner, N.H., & ten Brummelaar, T.A.
TTB ten Brummelaar, T.A., Mason, B.D., Bagnuolo, W.G., Jr., Hartkopf, W.,
TTB McAlister, H.A., & Turner, N.H.
TTB ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr.,
TTB Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
21044-1951 FIN 328 2006 23 13 0.2 5.02 7.39 A4V+F2V -20 6115 NOD 210424.32-195117.8
21044-1951 FIN 328 2008 26 166 0.3 5.02 7.39 A4V+F2V -20 6115 NOD 210424.32-195117.8
21044-1951 FIN 328 2010 29 152 0.3 5.02 7.39 A4V+F2V -20 6115 NOD 210424.32-195117.8
21044-1951 FIN 328 2014 32 124 0.4 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2018 35 282 0.4 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2019 37 273 0.3 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2020 38 86 0.3 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2021 39 261 0.3 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2022 40 254 0.3 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8
21044-1951 FIN 328 2023 42 246 0.3 5.02 7.39 A4V+F2V -20 6115 NO 210424.32-195117.8

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