A perch is a unit of length that was historically used in some English-speaking countries, primarily in the United Kingdom. It is equivalent to 5.5 yards or 16.5 feet (about 5.0292 meters). The term "perch" is relatively old and is not commonly used in modern measurements.
Perches were often used in land measurement, particularly in agriculture and real estate. They were also sometimes used in surveying. However, the use of the perch as a standard unit of measurement has largely been replaced by more modern and standardized systems such as the metric system or the imperial system based on feet and yards. As a result, the perch is considered an archaic or historical unit of measurement today.
The average distance from Earth to the Sun is about 149.6 million kilometers (or approximately 93 million miles). This distance is often referred to as an astronomical unit (AU), which is a standard unit of measurement used in astronomy to describe distances within our solar system. An astronomical unit is defined as the average distance between the Earth and the Sun.
It's important to note that the Earth's orbit around the Sun is not a perfect circle but rather an ellipse, so the distance between Earth and the Sun varies slightly throughout the year. The value given here represents the average distance. The closest point in Earth's orbit to the Sun is called perihelion, while the farthest point is called aphelion. Perihelion occurs around early January, and aphelion occurs around early July. At perihelion, Earth is approximately 147.1 million kilometers (about 91.4 million miles) from the Sun, while at aphelion, it is about 152.1 million kilometers (around 94.5 million miles) away.