TVLM 513-46546 - Nearby M9V with a Saturn-mass planet from astrometry

An Astrometric Planetary Companion Candidate to the M9 Dwarf TVLM 513–46546
https://iopscience.iop.org/article/10.3847/1538-3881/ab9e6e

Quote :

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 m p  = 0.35−0.42 M J, a circular orbit (e sime 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 from a 0.06−0.08 M ⊙ star represents a challenge to planet formation theory. This is the first astrometric detection of a planet at radio wavelengths.

Also on arXiv: https://arxiv.org/abs/2008.01595

Let's hope this one does not meet the fate of VB 10b.