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Kepler-296 f

Kepler-296 · M2 V host star · cool red dwarf · main sequence

[ KEPLER_296_F.IMG ]
VIEW 1 · ON THE SURFACE
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Artist’s impression of Kepler-296 f: VIEW 1 · ON THE SURFACE
VIEW 1 · ON THE SURFACE · Artist’s impression. No surface has been seen.
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544.7 light-years from Earth
[ FACTS.DAT ]
Right ascension / declination286.540° / 49.437°J2000 / ICRS
Gravity1.20 × Earthmodelled estimate
Year63.3 days
From its star0.2550 AUabout 38.1 million km. Kepler-296 B ≈35 AU projected from Kepler-296
Stars in the system2 stars5 known planets in system
Stars this world orbits1 starOrbits Kepler-296; not circumbinary
Day and nightSpin state unknownIts rotation has not been measured, so we do not know whether it has a normal day/night cycle. 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≈3,550 Ktypical M2 V · 0.44 Sun radii
No atmosphere206 K · -67°C30% reflective · heat shared
Earth-like air239 K · -34°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.

[ 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

Kepler-296 is class M2 V. Its visible daylight would be dim and strongly red-orange; most of its energy is infrared.

Representative daytime geometry only; the star’s height in the sky changes through the day.

[ GROUND.TXT ]STILL INFERENCE

Most plausible case. Wider and cooler than planet e, receiving about 62% of Earth’s light. The same orange-red primary spans about 1.0°. Radius about 1.80 Earth radii, large enough that a water layer or a thin envelope is common for this size. Cooler ground than e: more frost, rock under the star, ice more extensive. The binary companion is the same bright point.

Dry case. Cool rock rather than a scorched desert. A dry 1.8-radius planet is still a guess, because planets this large often are not dry.

Thick-air case. More likely than for a 1.1-radius world. Clouds may be what you see instead of ground.

Walking. About 20% heavier than Earth, modelled, and only if the planet is rocky. Planet e would look about 0.17 of the Moon’s width, a small disk. The star is dimmer in this sky than it is from e.

Based on: Barclay et al. 2015; S 0.62, Rp 1.80, a 0.255 AU, star angular size 1.0°

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

Kepler-296 f circles Kepler-296 alone. Kepler-296 A and B are separated by about 35 AU in projection; their true three-dimensional separation is larger. Also shown: Kepler-296 b, Kepler-296 c, Kepler-296 d, Kepler-296 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.