◀ D:\SPACE · ALL WORLDS

D:\SPACE\L_98_59_F>

SELECTED WORLD

L 98-59 f

L 98-59 · M3 V host star · cool red dwarf · main sequence

[ L_98_59_F.IMG ]
VIEW 1 · ON THE SURFACE
1 / 2
Artist’s impression of L 98-59 f: VIEW 1 · ON THE SURFACE
VIEW 1 · ON THE SURFACE · Artist’s impression. No surface has been seen.
USE ◀ ▶ TO SEE THE OTHER VIEWS · OR SWIPE
34.6 light-years from Earth
[ FACTS.DAT ]
Right ascension / declination124.533° / -68.314°J2000 / ICRS
Gravity1.28 × Earthmodelled estimate
Year23.1 days
From its star0.1052 AUabout 15.7 million km
Stars in the system1 star5 known planets in system
Stars this world orbits1 starOrbits L 98-59
Day and nightLikely synchronous spinProbably spins once per orbit, keeping one hemisphere in permanent day and the other in permanent night. Heuristic: likely at ≤0.25 AU, uncertain to 0.50 AU, probably not beyond; rotation is not directly measured.
[ TEMP.EST ]MODELLED, NOT MEASURED
Host star≈3,450 Ktypical M3 V · 0.35 Sun radii
No atmosphere278 K · 4°C30% reflective · heat shared
Earth-like air311 K · 37°CBaseline plus 33°C

Star temperature and orbital distance set incoming energy, but stellar size is also required. This calculation uses a typical radius for the listed spectral type, 30% reflectivity and even heat redistribution. It is not a ground-temperature forecast: air, clouds, oceans and surface reflectivity could move the result by tens to hundreds of degrees. A likely synchronous spin also means the permanent day and night sides would not share one ground temperature.

[ STARLIGHT.SPC ]VISIBLE LIGHT ONLY

The marker above the bar is a typical temperature for this star’s class. The line below is Earth’s Sun.

red-orange

L 98-59 is class M3 V. Its visible daylight would be dim and strongly red-orange; most of its energy is infrared.

Representative lit-side geometry only. On a locked world, the star’s real elevation would depend on where you stand.

[ GROUND.TXT ]STILL INFERENCE

Most plausible case. The outer planet of a five-planet system 35 light-years away. It receives about Earth’s light around a 0.32-solar-radius star that spans about 1.6°. The inner planets are transiting and rocky or watery; f itself is less directly sized. Earth-like energy under a fixed red star: rock, night-side ice, a possible water patch under the star.

Dry case. Red rock and dust, ice confined to the night side. Similar energy to Earth, so a dry day side is warm, not frozen.

Thick-air case. Clouds could cover the ground. The inner worlds already show that this star keeps small planets; f could still wear a heavier atmosphere than they do.

Walking. About 28% heavier than Earth, modelled. L 98-59 e would look about 0.4 of the Moon’s width. The star is magnitude 12, brighter in our sky than most of the Kepler hosts.

Based on: Demangeon et al. 2021 and later; Teff 3415 K, R 0.32 Rsun, S 1.1, a 0.105 AU, estimated radius 1.5 Rearth

[ ORBIT.SYS ]5 KNOWN · ALL SHOWN
100% · Above 30°

L 98-59 f circles L 98-59. Also shown: L 98-59 b, L 98-59 c, L 98-59 d, L 98-59 e, each on its NASA-catalogued orbit. Use Higher and Lower to move your viewpoint above, through and below the orbital plane, and − / + to zoom. Orbit shapes and spacing are schematic.

[ SOURCES.TXT ]

Positions, distances, and system parameters come from the NASA Exoplanet Archive composite table, queried 25 Sep 2026. GJ 273 b uses the parallax in that row, 12.4 light-years. The 45 worlds follow Bohl, Lawrence, Lowry, and Kaltenegger.