(136108) Haumea
Object
| Object |
(136108) Haumea |
| Diameter(1) |
1595 km |
| Dynamic class(1) |
Haumea |
| Absolute magnitude |
0.27 |
| G slop |
0.15 |
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 (documentation) |
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| Number of unpublished observations |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.
Previous NIMA versions