2021 PH27 Closest Object to the Sun

The video introduces 2021PH27, the closest object to the Sun, surpassing Mercury. Discovered by Scott Shepherd in Chile using the Dark Energy Survey, it has an apparent magnitude of 19. The video explains apparent magnitude and details 2021PH27's orbit, which is closer to the Sun than Mercury at perihelion and farther than Venus at aphelion. It has the shortest orbital period among asteroids, taking 113 days to orbit the Sun. With a diameter over 1 km, it is smaller than Mercury. The video concludes by encouraging viewers to study astronomy.

Who discovered 2021PH27 and where was it discovered?

• Emily Johnson in Peru

• Jane Smith in Brazil

• Scott Shepherd in Chile

• John Doe in Argentina

What is the significance of apparent magnitude in astronomy?

• It measures the speed of asteroids.

• It measures the distance of stars from Earth.

• It measures the brightness of astronomical objects as seen from Earth.

• It measures the size of planets.

How long does it take for 2021PH27 to orbit the Sun?

• 88 days

• 365 days

• 113 days

• 225 days

What is the perihelion of 2021PH27 compared to Mercury?

• Farther from the Sun than Mercury

• Closer to the Sun than Mercury

• Same distance as Mercury

• Farther from the Sun than Venus

What is the expected diameter of 2021PH27?

• Exactly 2 kilometers

• More than 1 kilometer

• Less than 500 meters

• About 4800 kilometers