WDS 21579-5500 FIN 307 (Del Ind) : NOTES
 
 
discov_num notes refcode
FIN 307 del Ind.
Finsen called attention to quasi-periodic residuals in position
angle which neither of the alternative orbits explains.
Illustrative solutions with useable astrometric mass-ratios. Short-P
solution marginally better, but indeterminate with strong element-
correlations. Probably giant primary, more speckle-data needed. Sod1999
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 5.24 +/- 0.83, 3.26, and 1.58 Msun, respectively. Mlk2012
Docobo & Andrade (2013) derive a dynamical parallax of 22.71 +/- 0.69
mas and component masses 1.78 +/- 0.21 and 1.33 +/- 0.16 Msun. 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
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
idgroup discov author
1 FIN Finsen, W.S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21579-5500 FIN 307 1991 308 80 0.1 4.80 5.96 F0IV NO 215755.03-545933.2
21579-5500 FIN 307 2008 316 50 0.1 4.80 5.96 F0IV NO 215755.03-545933.2
21579-5500 FIN 307 2009 317 75 0.1 4.80 5.96 F0IV NOD 215755.03-545933.2
21579-5500 FIN 307 2012 314 290 0.1 4.80 5.96 F0IV NO 215755.03-545933.2
21579-5500 FIN 307 2017 315 94 0.2 4.80 5.96 F0IV NO 215755.03-545933.2
21579-5500 FIN 307 2018 316 106 0.1 4.80 5.96 F0IV NO 215755.03-545933.2
21579-5500 FIN 307 2020 317 222 0.1 4.80 5.96 F0IV NO 215755.03-545933.2

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