(136108) Haumea
This object has a more recent orbit available here
Object
| Object | (136108) Haumea |
| Diameter(1) | 1595 km |
| Dynamic class(1) | Haumea |
| Absolute magnitude | 0.20 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458200.5 |
| Semi major axis | 43.346747 ± 0.000365 au |
| Eccentricity | 0.189945247 ± 0.000007820 |
| Inclination | 28.206471997 ± 0.000044970 ° |
| Longitude of ascending node | 122.018958 ± 0.000235 ° |
| Argument of perihelia | 238.692221 ± 0.001481 ° |
| Mean anomaly | 214.977089 ± 0.002049 ° |
| Orbital period | 285.39 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv9 |
| Observation file |
omc_ast_NIMAv9.txt |
| bsp file | 136108_Haumea_nima_v9.bsp |
| Date of first observation | 1955-03-22 |
| Date of last observation | 2021-08-02 |
| Number of observations used in the fit | 4564 |
| Number of rejected observations | 16 |
| Number of DES observations | 0 |
| Number of MPC observations | 2747 |
| Number of unpublished observations | 1833 |
| RMS of observations | 0.207 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv9 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.019 | 0.013 |
| 2021-07 | 0.024 | 0.015 |
| 2022-01 | 0.025 | 0.016 |
| 2022-07 | 0.027 | 0.018 |
| 2023-01 | 0.032 | 0.019 |
| 2023-07 | 0.032 | 0.020 |
| 2024-01 | 0.039 | 0.023 |
| 2024-07 | 0.037 | 0.023 |
| 2025-01 | 0.048 | 0.026 |
Ephemeris comparison
Difference between NIMAv9 and JPL90 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.