Discovery | |
---|---|
Discovered by | Auguste Charlois |
Discovery date | 24 September 1891 |
Designations | |
(318) Magdalena | |
Pronunciation | /mæɡdəˈliːnə/ [1] |
Named after | Possibly Mary Magdalene |
Main belt | |
Orbital characteristics [2] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 124.56 yr (45496 d) |
Aphelion | 3.46477 AU (518.322 Gm) |
Perihelion | 2.92120 AU (437.005 Gm) |
3.19298 AU (477.663 Gm) | |
Eccentricity | 0.085119 |
5.71 yr (2084.0 d) | |
158.522° | |
0° 10m 21.886s / day | |
Inclination | 10.6573° |
161.509° | |
296.737° | |
Physical characteristics | |
Dimensions | 85 km |
42.49 h (1.770 d) | |
9.4 | |
Magdalena (minor planet designation: 318 Magdalena) is a main belt asteroid orbiting the Sun. It was discovered by Auguste Charlois on 24 September 1891 in Nice. It may be named for Mary Magdalene, who in legend travelled to Southern Gaul and is the patron saint of Provence. [3]
On April 15, 2005, UT Magdalena occulted a 10.7 mag star in the constellation Scutum for observers along a path across Australia.
Measurements made with the IRAS observatory give a diameter of 106.08 ± 0.25 km and a geometric albedo of 0.03 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 105.32 ± 11.11 km and a geometric albedo of 0.03 ± 0.01. [4]
Alternative rock group The Pixies named one of their songs after the asteroid on their album Indie Cindy. [5]
Fortuna is one of the largest main-belt asteroids. It has a composition similar to 1 Ceres: a darkly colored surface that is heavily space-weathered with the composition of primitive organic compounds, including tholins.
Hekate is a large main-belt asteroid.
Hera is a moderately large main-belt asteroid with an orbital period of 4.44 years. It was discovered by Canadian-American astronomer James Craig Watson on September 7, 1868, and named after Hera, queen and fifth in power of the Olympian gods in Greek mythology. This is a stony S-type asteroid with a silicate surface composition.
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Polyxo is a main-belt asteroid that was discovered by A. Borrelly on March 31, 1891, in Marseilles. It is orbiting the Sun at a distance of 2.75 AU with a low orbital eccentricity (ovalness) of 0.04 and a period of 4.56 yr. The orbital plane is tilted at an angle of 4.36° to the plane of the ecliptic.
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