(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) | 2460600.5 |
| Semi major axis | 42.920225 ± 0.000033 au |
| Eccentricity | 0.198319012 ± 0.000001142 |
| Inclination | 28.208444387 ± 0.000001013 ° |
| Longitude of ascending node | 121.865674 ± 0.000016 ° |
| Argument of perihelia | 240.997564 ± 0.000765 ° |
| Mean anomaly | 220.879736 ± 0.001135 ° |
| Orbital period | 281.19 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv12 |
| Observation file |
omc_ast_NIMAv12.txt |
| bsp file | 136108_Haumea_nima_v12.bsp |
| Date of first observation | 1955-03-22 |
| Date of last observation | 2024-07-13 |
| Number of observations used in the fit | 7356 |
| Number of rejected observations | 17 |
| Number of DES observations | 0 |
| Number of MPC observations | 4796 |
| Number of unpublished observations | 1906 |
| RMS of observations | 0.100 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv12 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.010 | 0.005 |
| 2024-07 | 0.009 | 0.005 |
| 2025-01 | 0.013 | 0.007 |
| 2025-07 | 0.011 | 0.006 |
| 2026-01 | 0.016 | 0.008 |
| 2026-07 | 0.014 | 0.007 |
| 2027-01 | 0.019 | 0.009 |
| 2027-07 | 0.018 | 0.008 |
| 2028-01 | 0.023 | 0.011 |
Ephemeris comparison
Difference between NIMAv12 and JPL121 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.