56 Melete
| Discovery | |
|---|---|
| Discovered by | Hermann Mayer Salomon Goldschmidt |
| Discovery date | September 9, 1857 |
| Designations | |
|
Named after
|
Melete |
| Main belt | |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 480.683 Gm (3.213 AU) |
| Perihelion | 295.717 Gm (1.977 AU) |
| 388.200 Gm (2.595 AU) | |
| Eccentricity | 0.238 |
| 1526.839 d (4.18 a) | |
|
Average orbital speed
|
18.22 km/s |
| 267.781° | |
| Inclination | 8.072° |
| 193.478° | |
| 103.648° | |
| Physical characteristics | |
| Dimensions | 113.2 km[1] |
| Mass | (4.61 ± 0.00) × 1018[2] kg |
|
Mean density
|
6.00 ± 1.31[2] g/cm3 |
| 0.0316 m/s² | |
| 0.0598 km/s | |
| 18.1 hr[1] | |
| Albedo | 0.065[1][3] |
| Temperature | ~173 K |
|
Spectral type
|
P[1] |
| 8.31[1] | |
56 Melete (/ˈmɛlᵻtiː/ MEL-i-tee) is a large and dark main belt asteroid. It is a rather unusual P-type asteroid, probably composed of organic rich silicates, carbon and anhydrous silicates, with possible internal water ice.
Melete was discovered by Hermann Goldschmidt from his balcony in Paris, on September 9, 1857. It orbit was computed by E. Schubert, who named it after Melete, the Muse of meditation in Greek mythology.[4] It was originally confused for 41 Daphne before it was confirmed not to be by its second sighting on August 27, 1871.[5] In 1861, the brightness of 56 Melete was shown to vary by German astronomer Friedrich Tietjen.[6]
To date, two stellar occultations by Melete have been observed successfully (in 1997 and again in 2002).[citation needed]
Melete has been studied by radar.[7] Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado in 2007 gave a light curve with a period of 18.151 ± 0.002 hours and a brightness variation of 0.15 ± 0.02 in magnitude. This result is in agreement with a period of 18.1 hours independently reported in 1993 and 2007.[8]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ Asteroid Data Sets
- ↑ Lutz D. Schmadel, Dictionary of Minor Planet Names, p.20.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Ephemeris
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