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Epoch J2000 Equinox J2000
|Right ascension||15h 01m 08.187s|
|Declination||+22° 50' 02.04"'|
|Proper motion (μ)|| RA: -55 mas/yr |
Dec.: -59 mas/yr
|Parallax (π)||92.92 ± 0.23 mas|
|Distance||35.10 ± 0.09 ly |
(10.76 ± 0.03 pc)
|Age||>1 billion years|
TVLM 513-46546 is an M9 ultracool dwarf at the red dwarf/ brown dwarf mass boundary in the constellation Boötes. It exhibits flare star activity, which is most pronounced at radio wavelengths. The star has a mass approximately 80 times the mass of Jupiter (or 8 percent of the Sun's mass). The radio emission is broadband and highly circularly polarized, similar to planetary auroral radio emissions. The radio emission is periodic, with bursts emitted every 7054 s, with nearly one hundredth of a second precision. Subtle variations in the radio pulses could suggest that the ultracool dwarf rotates faster at the equator than the poles (differential rotation) in a manner similar to the Sun.
- Jan Forbrich; Edo Berger; Mark J. Reid (2013). "An Astrometric Search for a Sub-stellar Companion of the M8.5 Dwarf TVLM513–46546 Using Very Long Baseline Interferometry". The Astrophysical Journal. 777: 70. arXiv:1307.4117v1. Bibcode:2013ApJ...777...70F. doi:10.1088/0004-637X/777/1/70.
- Hallinan, G. (2006). "Rotational Modulation of the Radio Emission from the M9 Dwarf TVLM 513-46546: Broadband Coherent Emission at the Substellar Boundary?". The Astrophysical Journal. 653 (1): 690–699. arXiv:astro-ph/0608556. Bibcode:2006ApJ...653..690H. doi:10.1086/508678.
- Wolszczan, A.; Route, M. (2014). "Timing Analysis of the Periodic Radio and Optical Brightness Variations of the Ultracool Dwarf, TVLM 513-46546". The Astrophysical Journal. 788 (1): 23. arXiv:1404.4682. Bibcode:2014ApJ...788...23W. doi:10.1088/0004-637X/788/1/23.
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