(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 | 43.346978 ± 0.000480 au |
| Eccentricity | 0.189940983 ± 0.000009547 |
| Inclination | 28.206467269 ± 0.000057263 ° |
| Longitude of ascending node | 122.018915 ± 0.000265 ° |
| Argument of perihelia | 238.692012 ± 0.001443 ° |
| Mean anomaly | 214.977162 ± 0.001956 ° |
| Orbital period | 285.40 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 136108_Haumea_nima_v6.bsp |
| Date of first observation | 1955-03-22 |
| Date of last observation | 2018-02-09 |
| Number of observations used in the fit | 3019 |
| Number of rejected observations | 48 |
| Number of DES observations | 0 |
| Number of MPC observations | 1499 |
| Number of unpublished observations | 1568 |
| RMS of observations | 0.205 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.022 | 0.020 |
| 2018-07 | 0.025 | 0.020 |
| 2019-01 | 0.026 | 0.022 |
| 2019-07 | 0.027 | 0.022 |
| 2020-01 | 0.031 | 0.025 |
| 2020-07 | 0.030 | 0.025 |
| 2021-01 | 0.037 | 0.028 |
| 2021-07 | 0.034 | 0.027 |
| 2022-01 | 0.044 | 0.032 |
Ephemeris comparison
Difference between NIMAv6 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.