375 Ursula
Encyclopedia
375 Ursula is one of the largest asteroid
s from the asteroid belt
. It was discovered by Auguste Charlois
on September 18, 1893, in Nice
.
Observations of an occultation
on November 15, 1984, produced six chords
indicating an estimated diameter of 216±10 km.
Asteroid
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...
s from the asteroid belt
Asteroid belt
The asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets...
. It was discovered by Auguste Charlois
Auguste Charlois
Auguste Honoré Charlois was a French astronomer who discovered 99 asteroids while working in Nice.His first discovery was the asteroid 267 Tirza in 1887...
on September 18, 1893, in Nice
Nice
Nice is the fifth most populous city in France, after Paris, Marseille, Lyon and Toulouse, with a population of 348,721 within its administrative limits on a land area of . The urban area of Nice extends beyond the administrative city limits with a population of more than 955,000 on an area of...
.
Observations of an occultation
Occultation
An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer. The word is used in astronomy . It can also refer to any situation wherein an object in the foreground blocks from view an object in the background...
on November 15, 1984, produced six chords
Chord (astronomy)
In the field of astronomy the term chord typically refers to a line crossing an object which is formed during an occultation event. By taking accurate measurements of the start and end times of the event, in conjunction with the known location of the observer and the object's orbit, the length of...
indicating an estimated diameter of 216±10 km.
External links
- Orbital simulation from JPL (Java) / Ephemeris