OGLE-2016-BLG-1195Lb

OGLE-2016-BLG-1195Lb is an extrasolar planet located about 22,000 light-years from Earth, in the galactic bulge, orbiting the 0.57±0.06M☉[6] star OGLE-2016-BLG-1195L, discovered in 2017.[4][5][3] The planet was detected using gravitational microlensing techniques managed by the Korea Astronomy and Space Science Institute and the Spitzer Space Telescope. Initially, it was believed the planet has a mass similar to Earth and is located about the same distance from its host star as the Earth is from the Sun,[4] although it was expected to be much colder.[7][8][4]

OGLE-2016-BLG-1195Lb
(obsolete image) Icy Earth-like exoplanet about the same distance from its host star as the Earth is to the Sun (artist concept).[1][2][3][4][5]
Discovery[3][4]
Discovery siteKorea Astronomy and Space Science Institute and Spitzer Space Telescope[4]
Discovery date2017
Gravitational microlensing[4]
Orbital characteristics
2.62±0.28
StarOGLE-2016-BLG-1195L
Physical characteristics
Mass9.91±1.61[6] M🜨

    In 2023, the planetary mass estimate was significantly increased to 9.91±1.61M🜨, resulting in it likely being a Neptune-like ice giant planet.[6]

    The planet has been referred to as Hoth due to its resemblance (before 2023 parameters update) to the planet with the same name from the Star Wars franchise.[8] A similar exoplanet, OGLE-2005-BLG-390Lb, has also been compared to Hoth, by NASA in this instance.[9]

    See also

    References
    1. Shvartzvald, Y; et al. (1 May 2017). "An Earth-mass Planet in a 1 au Orbit around an Ultracool Dwarf". The Astrophysical Journal Letters. 840 (L3): L3. arXiv:1703.08548. Bibcode:2017ApJ...840L...3S. doi:10.3847/2041-8213/aa6d09. hdl:10092/13689.
    2. Bond, I. A.; et al. (25 March 2017). "The Lowest Mass Ratio Planetary Microlens: OGLE 2016-BLG-1195Lb". Monthly Notices of the Royal Astronomical Society. 469 (2): 2434–2440. arXiv:1703.08639. Bibcode:2017MNRAS.469.2434B. doi:10.1093/mnras/stx1049.
    3. Staff (2017). "Planet OGLE-BLG-1195L b". Extrasolar Planets Encyclopaedia. Archived from the original on 31 March 2017. Retrieved 27 April 2017.
    4. Staff (26 April 2017). "PIA21430: Iceball Planet Artist's Concept". NASA. Retrieved 27 April 2017.
    5. Landau, Elizabeth (26 April 2017). "'Iceball' Planet Discovered Through Microlensing". NASA. Retrieved 27 April 2017.
    6. OGLE-2016-BLG-1195Lb: A SUB-NEPTUNE BEYOND THE SNOW LINE OF AN M-DWARF CONFIRMED BY KECK AO, 2023, arXiv:2302.01168
    7. "'Iceball' planet discovered through microlensing".
    8. Strickland, Ashley (26 April 2017). "Icy Earth-mass exoplanet is 'colder than Hoth'". CNN. Retrieved 27 April 2017.
    9. Brennan, Pat (15 December 2015). "8 planets that make you think Star Wars is real". NASA. Retrieved 29 April 2017.


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