2003 UZ413
| Discovery[1] | |
|---|---|
| Discovered by | M. E. Brown D. L. Rabinowitz C. A. Trujillo |
| Discovery date | October 21, 2003 |
| Designations | |
| MPC designation | 2003 UZ413 |
| Plutino[2][3] | |
| Orbital characteristics[4] | |
| Epoch December 9, 2014 | |
| Aphelion | 47.905 AU (Q) |
| Perihelion | 30.572 AU (q) |
| 39.239 AU (a) | |
| Eccentricity | 0.22086 |
| 245.80 yr | |
| 107.04° (M) | |
| Inclination | 12.04249° |
| 136.174° | |
| 145.23° | |
| Physical characteristics | |
| Dimensions | 370–820 km[4][5] 636 km[6] |
|
Mean density
|
2.29–3.00 > ρ >0.72 g/cm3[7] |
|
Sidereal rotation period
|
4.13 ± 0.05 h[8] |
|
Spectral type
|
V−R=0.46 ± 0.06 R−I=0.37 ± 0.06[9] |
| 20.8[10] | |
| 4.38 ± 0.05[9] | |
2003 UZ413, also written as 2003 UZ413, is a trans-Neptunian object (TNO) with an absolute magnitude of 4.4.[9] It has a 2:3 orbital resonance with Neptune, which makes it a plutino.[2] It is likely large enough to be a dwarf planet.
It has been observed 79 times over 15 oppositions, with precovery images back to 1954.[4]
Orbit and rotation
2003 UZ413 is locked in 2:3 resonance with Neptune, which means that when it makes two revolutions around the Sun, Neptune makes exactly three.[2]
The object rotates very fast. In fact, with a period of about 4.1 hours, it is the fastest rotator in the Kuiper belt after Haumea.[8]
Physical characteristics
The size of 2003 UZ413 is not known, but a reasonable estimate is around 600 kilometres (370 mi).[5][6] Given its rapid rotation, it must have a density higher than 0.72 g/cm3.[7] Stable Jacobi ellipsoids with an axis ratio of a/b ≥ 1.13 ± 0.03, as implied by its light-curve amplitude of Δm = 0.13 ± 0.03, exist for densities in the range of 2.29−3.00 g/cm3.[7]
In visible light, this object is neutral or slightly red in color and has a flat, featureless reflectance spectrum.[8]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 7.2 Perna, D., Dotto, E., Barucci, M.A., Rossi, A., Fornasier, S., & de Bergh, C. (2009). Rotations and densities of trans-Neptunian objects.
- ↑ 8.0 8.1 8.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 9.2 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) / Horizons Ephemeris
- 2003 UZ413 Precovery Images
