(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 | 0.26 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2457090.130412306 |
| Semi major axis | 43.241155 ± 0.000142 au |
| Eccentricity | 0.190732122 ± 0.000002895 |
| Inclination | 28.192040669 ± 0.000004639 ° |
| Longitude of ascending node | 121.796915 ± 0.000073 ° |
| Argument of perihelia | 240.089055 ± 0.001155 ° |
| Mean anomaly | 209.506342 ± 0.001664 ° |
| Orbital period | 284.35 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv11 |
| Observation file |
omc_ast_NIMAv11.txt |
| bsp file | 136108_Haumea_nima_v11.bsp |
| Date of first observation | 1955-03-22 |
| Date of last observation | 2023-08-11 |
| Number of observations used in the fit | 6009 |
| Number of rejected observations | 17 |
| Number of DES observations | 0 |
| Number of MPC observations | 4050 |
| Number of unpublished observations | 1899 |
| RMS of observations | 0.082 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv11 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.020 | 0.014 |
| 2023-07 | 0.021 | 0.014 |
| 2024-01 | 0.025 | 0.017 |
| 2024-07 | 0.025 | 0.017 |
| 2025-01 | 0.030 | 0.020 |
| 2025-07 | 0.030 | 0.019 |
| 2026-01 | 0.036 | 0.023 |
| 2026-07 | 0.035 | 0.022 |
| 2027-01 | 0.042 | 0.026 |
Ephemeris comparison
Difference between NIMAv11 and JPL115 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.