The orbital speed of the 2021 PH27 also reaches 106 km per second in its perihelion phase.
JAKARTA – Recently, researchers have discovered the asteroid with the fastest orbital period in the solar system. That asteroid is 2021 PH27.
Citing the Science Education page of the National Institute of Aeronautics and Space (LAPAN), PH27 2021 was first discovered by astronomer Scott Sheppard working at the Carnegie Institution for Science (CIS) using the Dark Energy Camera (DEC) instrument.
DEC is a multipurpose instrument that can capture images of objects in the universe over a wide frequency range such as near ultraviolet, visible light, and near infrared.
This instrument is mounted on the Victor M. Blanco 4-Meter Telescope at the Cerro Tololo Inter-American Observatory, Chile. Based on NASA’s JPL Small-Body Database Browser (SBDB), the speed of asteroid 2021 PH27 orbiting the sun is 114.48 days.
The length of this orbital period is slightly longer when compared to Mercury, which is able to orbit the sun for only 88 days.
Categorized as having a fast orbital period because the orbit of 2021 PH27 is more oval than Mercury. If the orbital elongation of Mercury is 0.21; The orbital extension of PH27 2021 is 0.71 or almost 3.5 times more oval than Mercury’s orbit. The orbital speed of the 2021 PH27 also reaches 106 km per second in its perihelion phase.
Please note, 2021 PH27 is included in the Atira asteroid family, which is an asteroid whose orbit is inside Earth’s orbit. So the Atira asteroid family is also referred to as Interior Earth Objects. This is because the aphelion distance—the object’s furthest point from the Sun—asteroids is smaller than Earth’s aphelion distance.
Asteroid 2021 PH27 has an aphelion distance of 117,983,472 km. While the distance perihelion or the closest point of an object to the Sun is 20,067,388 km. Also, this asteroid orbits the Sun at an orbital tilt of 31.66 degrees with respect to the ecliptic. This asteroid will reach perihelion on October 7th.
For its size, asteroid 2021 PH27 is estimated to be 1 km in diameter, which is obtained from the magnitude scale or absolute brightness of 17.73 and reflects back 15% of the sunlight received by the asteroid.
Despite measuring 1 km, 2021 PH27 is not considered a potentially hazardous object because the minimum orbital intersection distance measured from Earth is 0.227 sa (34 million kilometers) greater than Earth’s minimum MOOD for PHO of 0.05 sa (7.5 million kilometers). kilometers).