An Astrometric Planetary Companion Candidate to the M9 Dwarf TVLM 513–46546

  title={An Astrometric Planetary Companion Candidate to the M9 Dwarf TVLM 513–46546},
  author={Salvador Curiel and Gisela N. Ortiz-Le'on and Amy J. Mioduszewski and Rosa M. Torres},
  journal={The Astronomical Journal},
Astrometric observations of the M9 dwarf TVLM 513–46546 taken with the VLBA reveal an astrometric signature consistent with a period of 221 ± 5 days. The orbital fit implies that the companion has a mass mp = 0.35−0.42 MJ, a circular orbit (e ≃ 0), a semimajor axis a = 0.28−0.31 au, and an inclination angle i = 71°−88°. The detected companion, TVLM 513b, is one of the few giant-mass planets found associated with ultracool dwarfs. The presence of a Saturn-like planet on a circular orbit 0.3 au… 

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