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Wolf 1061 c

Wolf 1061 · M3.5 host star · cool red dwarf

[ WOLF_1061_C.IMG ]
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Artist’s impression of Wolf 1061 c: VIEW 1 · ON THE SURFACE
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14 light-years from Earth
[ FACTS.DAT ]
Right ascension / declination247.575° / -12.668°J2000 / ICRS
Gravity1.24 × Earthmodelled estimate
Year17.9 days
From its star0.0890 AUabout 13.3 million km
Stars in the system1 star3 known planets in system
Stars this world orbits1 starOrbits Wolf 1061
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≈3,400 Ktypical M3.5 · 0.30 Sun radii
No atmosphere275 K · 2°C30% reflective · heat shared
Earth-like air308 K · 35°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

Wolf 1061 is class M3.5. 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. A mid-M star 0.31 solar radii, so from 0.089 AU it spans about 1.8°. The planet receives about 1.3 times Earth’s light, and the orbit is eccentric at 0.11, so that light rises and falls through the year. The day side leans warm: rock and dust, ice pushed to the night side, a slush patch under the star only if water is abundant.

Dry case. Oxidized rock and dunes on the day side, no ice there, a thin haze. The eccentricity adds hotter weeks near closest approach.

Thick-air case. Near the inner edge of a conservative habitable zone. A thick water-vapor or CO₂ sky could hide the ground, especially near periastron.

Walking. About 24% heavier than Earth, modelled from a minimum mass. The neighboring planets are small in this sky: b about a fifth of the Moon’s width, d a thin disk. The star itself is magnitude 10, one of the brighter hosts in this catalog, 14 light-years away.

Based on: Wright et al. 2016; Astudillo-Defru; Teff 3342 K, R 0.31 Rsun, S 1.3, e 0.11, a 0.089 AU

[ ORBIT.SYS ]3 KNOWN · ALL SHOWN
100% · Above 30°

Wolf 1061 c circles Wolf 1061. Also shown: Wolf 1061 b, Wolf 1061 d, 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.