Gliese 1061 d

Gliese 1061 d is a potentially habitable exoplanet orbiting the red dwarf star Gliese 1061, 12 light-years away. As of October 2020, the exoplanet is considered to be the 7th most potentially habitable exoplanet found, with an Earth Similarity Index of 0.86, higher than Gliese 1061 c.[2][3][4]

Gliese 1061 d
Orbits of exoplanets in the Gliese 1061 system, with Gliese 1061 d's being the outermost orbit.
Discovery
Discovery date13 August 2019
Doppler spectroscopy
Orbital characteristics
0.052 (± 0.001) au
Eccentricity0.54
13.031 d[1]
StarGliese 1061
Physical characteristics
Mass1.64

    Announcement

    The exoplanet was announced on August 13, 2019, by members of the Red Dots project.

    Characteristics

    The exoplanet is estimated to have a mass of 1.64 Earth masses, an equilibrium temperature of 218 K (−55 °C; −67 °F), and an orbital period of 13 days.[5][1] Due to Gliese 1061 d's semi-major axis, it is likely that the exoplanet is tidally locked.

    Habitability

    Gliese 1061 is a non-variable star that does not suffer flares, so there is a greater probability that the exoplanet Gliese 1061 d still conserves its atmosphere if it has one.[6]

    It is an exoplanet colder than Earth, with an equilibrium temperature of 218 K (−55 °C; −67 °F) degrees Celsius, so the average temperature on the surface could be around 250 K (−23 °C; −10 °F), provided the atmosphere is similar to that of Earth.

    References
    1. "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2020-10-07.
    2. "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-10-07.
    3. "GJ 1061 d". exoplanetarchive.ipac.caltech.edu. Retrieved 2020-10-07.
    4. Dreizler, S.; V., S.; Jeffers; Rodríguez, E.; Zechmeister, M.; Barnes, J. R.; Haswell, C. A.; Coleman, G.; Lalitha, S.; Soto, D. Hidalgo; Strachan, J. B. P. (2020-03-21). "Red Dots: A temperate 1.5 Earth-mass planet in a compact multi-terrestrial planet system around GJ1061". Monthly Notices of the Royal Astronomical Society. 493 (1): 536–550. doi:10.1093/mnras/staa248. ISSN 0035-8711.
    5. "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-10-07.
    6. Starr, Michelle. "Three Rocky Exoplanets Have Been Found Orbiting a Star Just 12 Light-Years Away". ScienceAlert. Retrieved 2020-10-07.
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