(455502) 2003 UZ413
| Discovery[1] | |
|---|---|
| Discovered by | M. E. Brown D. L. Rabinowitz C. A. Trujillo |
| Discovery date | 21 October 2003 |
| Designations | |
| MPC designation | 2003 UZ413 |
| Plutino[2][3] | |
| Orbital characteristics[4] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 22417 days (61.37 yr) |
| Aphelion | 47.858 AU (7.1595 Tm) (Q) |
| Perihelion | 30.435 AU (4.5530 Tm) (q) |
| 39.146 AU (5.8562 Tm) (a) | |
| Eccentricity | 0.22255 (e) |
| 244.93 yr (89461.5 d) | |
| 109.14° (M) | |
| Inclination | 12.04279° (i) |
| 136.158° (Ω) | |
| 144.70° (ω) | |
| Earth MOID | 29.424 AU (4.4018 Tm) |
| Jupiter MOID | 25.2636 AU (3.77938 Tm) |
| 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] |
| V−R=0.46 ± 0.06 R−I=0.37 ± 0.06[9] |
|
| 20.8[10] | |
| 4.38 ± 0.05,[9] 4.4[4] | |
(455502) 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
(455502) 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 (455502) 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 4.3 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
- (455502) 2003 UZ413 at the JPL Small-Body Database
