HD 137010 is a K3.5 V dwarf star situated about 146 light-years away in the constellation of Libra.

Its age is approximated to lie in between about 4.8 and 10 billion years, and its low level of magnetic activity follows an old, fairly peaceful star.

Understood as BD-19 4097, HIC 75398, 2MASS J15242123-1944215 or TYC 6179-1111-1, the star has a visual magnitude of 10.1, making it one of the brightest stars understood to host an Earth-sized world with temperate orbital homes.

Designated HD 137010b, the newly-discovered world was identified throughout K2 Campaign 15, when NASA’s Kepler area telescope observed the moms and dad star for almost 3 months in 2017.

“Previous discoveries of Earth-sized worlds in habitable zones are primarily around so-called red overshadows, which are much smaller sized and dimmer than our Sun,” stated University of Southern Queensland astronomer Alexander Venner, very first author of the research study.

“Scientists have issues that these worlds may lose their whole environments due to high-energy radiation from their host stars, leaving them uninhabitable to recognized life.”

“In contrast, the host star of HD 137010b has residential or commercial properties much better to our Sun, that makes it most likely that the world might sustain an environment based upon existing theoretical designs.”

In the research study, Dr. Venner and associates analyzed K2 information, close-by outstanding light curves, archival imaging, radial speed measurements, and astrometric information to examine the nature of the signal, which lasted about 10 hours.

The checks highly show that the transit happened on the target star and is astrophysical in origin, instead of being triggered by background contamination, a close-by eclipsing binary, or a planetary system item.

From the transit depth, the astronomers obtained a planetary radius of about 1.06 times that of Earth.

Based upon the transit period and outstanding homes, they approximate an orbital duration of approximately 355 days.

At this range from the host star, HD 137010b is approximated to get approximately 29% of the excellent flux gotten by Earth from the Sun, positioning it near the external edge of the star’s habitable zone.

“If HD 137010b has an environment like that of Earth or Mars, it is most likely to be chillier than Antarctica,” Dr. Venner stated.

“But a thicker environment might warm the world enough to enable liquid water, which may be a great environment for life.”

“While present generations of huge instruments can not completely identify this newly-discovered world, it might end up being a prime target for future radial speed instruments intending to find Earth analogues.”

“Future area objectives created to straight image Earth-like worlds, like the NASA Habitable Worlds Observatory, might likewise can recording pictures of HD 137010b.”

The discovery is reported in a paper in the Astrophysical Journal Letters

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Alexander Venner et al2026. A Cool Earth-sized Planet Candidate Transiting a Tenth Magnitude K-dwarf from K2. ApJL 997, L38; doi: 10.3847/ 2041-8213/ adf06f