L 98-59

L 98-59
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 08h 18m 07.62144s[1]
Declination −68° 18′ 46.8054″[1]
Apparent magnitude (V) 11.69±0.05[2]
Characteristics
Evolutionary stage Red dwarf (main sequence)
Spectral type M3V[3]
B−V colour index +1.53[2]
R−I colour index +1.28[2]
Variable type None
Astrometry
Radial velocity (Rv)−6.10±0.19[1] km/s
Proper motion (μ) RA: 94.794(18) mas/yr[1]
Dec.: −340.084(20) mas/yr[1]
Parallax (π)94.2664 ± 0.0155 mas[1]
Distance34.599 ± 0.006 ly
(10.608 ± 0.002 pc)
Details[3]
Mass0.273±0.030 M
Radius0.303+0.026
−0.023
 R
Luminosity (bolometric)0.01128±0.00042 L
Surface gravity (log g)4.86±0.13 cgs
Temperature3415±135 K
Metallicity [Fe/H]−0.46±0.26 dex
Rotation80.9+5.0
−5.3
 d
Age>800 Myr
Other designations
2MASS J08180763-6818468, TOI-175, TYC 9193-2365-1, Gaia DR2 5271055243163629056
Database references
SIMBADdata

L 98-59 (TOI-175, TIC 307210830) is a bright M dwarf star, located in the constellation of Volans, at a distance of 10.608 parsecs (34.60 light-years), as measured by the Gaia spacecraft.[4]

Broadband photometry shows that it is an M3 dwarf star with three confirmed terrestrial-sized planets in transit, which were announced in March 2019 by TESS,[5] as well as a fourth non-transiting planet and fifth candidate.[6]

In August 2021, new evidence was announced for a fifth, potentially habitable planet, labeled L 98-59 f. Though still unconfirmed,[6] this planet is believed to have 2.46 times Earth's mass, and an orbital period of 23.15 days.[7][8]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Zach2013 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Demangeon2021 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Cloutier2019 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Kostov2019 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference eso2112b was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference ES-20210806 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference eso2112 was invoked but never defined (see the help page).