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First asteroid discovered by means of astrophotography rather than visual observation 433 Eros: 13×13×33: August 13, 1898: First near-Earth asteroid discovered and the second largest; first asteroid to be detected by radar; first asteroid orbited and landed upon 482 Petrina: 23.3: March 3, 1902: First asteroid named after dog 490 Veritas: 115 ...
Vesta is the brightest asteroid visible from Earth. It is regularly as bright as magnitude 5.1, [ 18 ] at which times it is faintly visible to the naked eye. Its maximum distance from the Sun is slightly greater than the minimum distance of Ceres from the Sun, [ e ] although its orbit lies entirely within that of Ceres.
Star rich field showing asteroid Iris (apmag 10.1) Iris's bright surface and small distance from the Sun make it the fourth-brightest object in the asteroid belt after Vesta, Ceres, and Pallas. It has a mean opposition magnitude of +7.8, comparable to that of Neptune, and can easily be seen with binoculars at most oppositions.
8 Flora is a large, bright main-belt asteroid. It is the innermost large asteroid: no asteroid closer to the Sun has a diameter above 25 kilometres (20% that of Flora), and not until 20-km 149 Medusa was discovered was an asteroid known to orbit at a closer mean distance. [8] It is the seventh-brightest asteroid with a mean opposition magnitude ...
Set to pass between the star and Earth is Leona, a slightly oval-shaped asteroid located between the orbits of Mars and Jupiter. Leona is estimated to be about 50 miles (80 kilometers) by 34 miles ...
☄️ Asteroid Vesta. The best part of the year to see the second most massive object in the main part of the asteroid belt is January, when Vesta will be at its brightest, magnitude 6.7.
S-type asteroids, with an astronomical albedo of typically 0.20, [1] are moderately bright and consist mainly of iron- and magnesium-silicates.They are dominant in the inner part of the asteroid belt within 2.2 AU, common in the central belt within about 3 AU, but become rare farther out.
Science enthusiasts are hoping to get a glimpse of a comet that’s supposed to be the brightest of 2025, ... or the Asteroid ... was pictured about 99.4 million miles away from Earth by NASA ...