(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 | 0.27 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460800.5 |
| Semi major axis | 42.961036 ± 0.000032 au |
| Eccentricity | 0.197030920 ± 0.000001101 |
| Inclination | 28.208341270 ± 0.000001001 ° |
| Longitude of ascending node | 121.825350 ± 0.000016 ° |
| Argument of perihelia | 240.976336 ± 0.000727 ° |
| Mean anomaly | 221.565508 ± 0.001076 ° |
| Orbital period | 281.59 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv13 |
| Observation file |
omc_ast_NIMAv13.txt |
| bsp file | 136108_Haumea_nima_v13.bsp |
| Date of first observation | 1955-03-22 |
| Date of last observation | 2025-07-12 |
| Number of observations used in the fit | 8290 |
| Number of rejected observations | 18 |
| Number of DES observations | 0 |
| Number of MPC observations | 5692 |
| Number of unpublished observations | 1945 |
| RMS of observations | 0.100 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv13 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.009 | 0.005 |
| 2024-07 | 0.008 | 0.004 |
| 2025-01 | 0.012 | 0.006 |
| 2025-07 | 0.011 | 0.005 |
| 2026-01 | 0.015 | 0.008 |
| 2026-07 | 0.013 | 0.007 |
| 2027-01 | 0.018 | 0.009 |
| 2027-07 | 0.017 | 0.008 |
| 2028-01 | 0.022 | 0.011 |
Ephemeris comparison
Difference between NIMAv13 and JPL126 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.