2003 LA7
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| Discovery | |
|---|---|
| Discovery date | 2003 |
| Designations | |
| 2003 LA7 | |
| 1:4 resonance[1][2] | |
| Orbital characteristics[3] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 3277 days (8.97 yr) |
| Aphelion | 115.01 AU (17.205 Tm) (Q) |
| Perihelion | 35.896 AU (5.3700 Tm) (q) |
| 75.451 AU (11.2873 Tm) (a) | |
| Eccentricity | 0.52425 (e) |
| 655.40 yr (239387 d) | |
| 351.12° (M) | |
| 0° 0m 5.414s /day (n) | |
| Inclination | 5.6452° (i) |
| 34.174° (Ω) | |
| 272.03° (ω) | |
| Earth MOID | 34.8845 AU (5.21865 Tm) |
| Jupiter MOID | 30.8067 AU (4.60862 Tm) |
| Physical characteristics | |
| Dimensions | ~231 km (assumed)[4] |
| 0.09 (assumed) | |
| ~22.4[5] | |
| 6.5[3] | |
2003 LA7 is a resonant trans-Neptunian object in a 1:4 orbital resonance with Neptune. This means that it goes around the Sun once for every four times that Neptune goes around. Another example of such object in this resonance is 2011 UP411.
Orbit  The orbit of "fourtino" 2003 LA7 compared to Pluto and Neptune. |
1:4 Libration  Neptune is held stationary at 5 o'clock. |
It is currently 43 AU from the Sun,[5] and will come to perihelion around 2041.[3]
Assuming a generic TNO albedo of 0.09, it is about 231 km in diameter.[4]
It has been observed 26 times over 4 oppositions.[3]
