(47171) Lempo
Object
| Object |
(47171) Lempo |
| Diameter(1) |
272 km |
| Dynamic class(1) |
plutino |
| Absolute magnitude |
5.00 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
39.764625 ± 0.000535 au |
| Eccentricity |
0.230811394 ± 0.000008697 |
| Inclination |
8.403503306 ± 0.000012493 ° |
| Longitude of ascending node |
97.165321 ± 0.000158 ° |
| Argument of perihelia |
295.748092 ± 0.000556 ° |
| Mean anomaly |
13.841243 ± 0.000252 ° |
| Orbital period |
250.76 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv14 |
| Observation file (documentation) |
omc_ast_NIMAv14.txt |
| bsp file |
47171_Lempo_nima_v14.bsp |
| Date of first observation |
1974-06-18 |
| Date of last observation |
2025-02-14 |
| Number of observations used in the fit |
1040 |
| Number of rejected observations |
7 |
| Number of DES observations |
11 |
| Number of MPC observations |
939 |
| Number of unpublished observations |
97 |
| RMS of observations |
0.251 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv14 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.042 |
0.036 |
| 2024-07 |
0.056 |
0.039 |
| 2025-01 |
0.050 |
0.040 |
| 2025-07 |
0.069 |
0.043 |
| 2026-01 |
0.061 |
0.044 |
| 2026-07 |
0.083 |
0.048 |
| 2027-01 |
0.075 |
0.049 |
| 2027-07 |
0.100 |
0.053 |
| 2028-01 |
0.092 |
0.055 |
Ephemeris comparison
Difference between NIMAv14 and JPL49 in right ascension (weighted by cos δ) and in declination.
Gray area represents the 1-σ uncertainty of NIMA ephemeris. Green dots represent the DES observations.
Previous NIMA versions