Exploring KOI-4777.01: A Gas Giant in the Kepler-Object of Interest Catalog
KOI-4777.01 is a fascinating exoplanet located in the far reaches of our galaxy, classified as a gas giant. It was discovered in 2014 and has intrigued astronomers due to its unique properties and position within the Kepler-Object of Interest (KOI) catalog.

Basic Characteristics
KOI-4777.01 is situated approximately 562 light years away from Earth. Its stellar magnitude is 16.413, making it a faint object in the night sky, challenging to observe without powerful telescopes. This exoplanet orbits its host star at an orbital radius of 0.008 astronomical units (AU), which is incredibly close to its star, causing it to experience extreme conditions.
Size and Mass
In terms of size, KOI-4777.01 is relatively small compared to Jupiter, with a mass multiplier of 0.31212 times the mass of Jupiter. This places it in the category of smaller gas giants. Its radius is 51% that of Earth, indicating that while it is larger than Earth, it is much smaller than Jupiter.
Orbital Dynamics
One of the most notable aspects of KOI-4777.01 is its orbital period of just 0.0011 years, or about 0.4 Earth days. This extremely short orbital period reflects the planet’s close proximity to its star. The orbital radius of just 0.008 AU suggests that it completes an orbit around its host star in a fraction of the time it takes Earth to orbit the Sun. Despite the proximity, KOI-4777.01 maintains an eccentricity of 0.0, indicating a perfectly circular orbit.
Detection Method
The planet was detected using the Transit Method, where scientists observed periodic dimming in the light of its host star, which occurs when the planet passes in front of the star as seen from Earth. This technique is one of the most reliable ways to discover exoplanets, especially those in close orbits like KOI-4777.01.
Conclusion
KOI-4777.01, while distant, provides valuable insight into the types of exoplanets that exist in our galaxy. Its characteristics—such as its size, short orbital period, and close orbit around its star—make it a unique object of study. As technology continues to advance, astronomers hope to gather more information about such planets, expanding our understanding of exoplanetary systems and the diversity of planetary bodies in the universe.