WDS 20526-1609 SPF 2 : NOTES
 
 
discov_num notes refcode
SPF 2 Stumpf et al. (2011) estimate the period at 21 +/- 1 yr and the system Spf2011
mass at > 78 Mjup. Near-IR colors suggest spectral types T1 +1/-4 and
T2.5 +/- 1.
SDSS J205235.31-160929.8. Bardalez Gagliuffi et al. (2015) derive a
preliminary orbit for this very low-mass binary, deriving a system
mass of 0.0823 +0.0037/-0.0027 Msun and spectral types L6.0 +/- 2.0
and T2.0 +/- 0.05. (Note: the quoted 2453654.31 Julian date for tau_0
does not appear to correspond to the best-fit T0. To was adjusted to
2455054.31 for the orbit catalog figure.) BGg2015
 
 
REFERENCES
 
 
refcode metd author reference
BGg2015 A j Bardalez Gagliuffi, D.C., Gelino, C.R., & Burgasser, A.J. 2015AJ....150..163B
BGg2015 +Ag AJ 150, 163, 2015
Spf2011 A j Stumpf, M.B., Geissler, K., Bouy, H., Brandner, W., Goldman, B., & Henning, Th. 2011A&A...525A.123S
Spf2011 +Hn A&A 525, A123, 2011
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20526-1609 SPF 2 2009 2 67 0.1 15.57 16.30 T1 T2.5 N DK 205235.31-160929.8
20526-1609 SPF 2 2010 6 79 0.1 15.57 16.30 L6.0+T2.0 NO K 205235.31-160929.8
20526-1609 SPF 2 2014 17 124 0.1 15.57 16.30 L6.0+T2.0 NO K 205235.31-160929.8

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