Draft:HD 137010: Difference between revisions

Star in the constellation Libra

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HD 137010 also known as EPIC 249661074 is a solar analog star located approximately 146 light-years away in the zodiac constellation Libra. Its apparent visual magnitude is 10.1, making it invisible to the naked eye but observable with a standard telescope.^[1] It is known that one exoplanet, designated HD 137010 b, may orbit the star.^[2][3]

HD 137010 has a spectral type of K3.5 V, indicating that it is a main-sequence star generating energy through the thermonuclear fusion of hydrogen in its core. This energy is radiated from its outer envelope at an effective temperature of around 4770 K, giving it an orange hue. Its age is estimated to be between 4.80 and 10.0 billion years. HD 137010 is slightly smaller than the Sun, with a mass of approximately 72.6% of the Sun’s mass and a radius of 70.7% of the Sun’s radius.^[1]

In early 2026, an analysis of archival data obtained during the extended K2 mission of the Kepler Space Telescope in 2017 revealed a single 10-hour transit event which occurred on the V=10.1 K-type dwarf star HD 137010.^[3] The transit was relatively shallow but detectable with a high signal-to-noise ratio due to the exceptionally high photometric precision achieved for the target object. Analysis of K2 photometry, historical and new observations, as well as archival radial velocities and astrometry, strongly indicates that the event was astrophysical in nature, occurred directly on the target object, and is best explained by the transit of a candidate planet.^[3]

The single observed transit implies a radius of 1.06 R_🜨, a negligibly small orbital eccentricity, and an orbital period of 355 days (0.88 AU). The predicted incident flux is 0.29+0.11
−0.13 I_⊕.^[1][3]

This means that HD 137010 b is located at the outer edge of the habitable zone.^[3]

Additional research is needed to confirm the exoplanet.