(24835) 1995SM55
This object has a more recent orbit available here
Object
| Object | (24835) 1995SM55 |
| Diameter(1) | 701 km |
| Dynamic class(1) | Haumea |
| Absolute magnitude | 4.64 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 42.140876 ± 0.001611 au |
| Eccentricity | 0.111098682 ± 0.000020725 |
| Inclination | 27.003809826 ± 0.000036908 ° |
| Longitude of ascending node | 20.946487 ± 0.000051 ° |
| Argument of perihelia | 69.692086 ± 0.009562 ° |
| Mean anomaly | 341.872746 ± 0.008477 ° |
| Orbital period | 273.57 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv11 |
| Observation file |
omc_ast_NIMAv11.txt |
| bsp file | 24835_1995SM55_nima_v11.bsp |
| Date of first observation | 1982-09-16 |
| Date of last observation | 2024-02-15 |
| Number of observations used in the fit | 386 |
| Number of rejected observations | 5 |
| Number of DES observations | 0 |
| Number of MPC observations | 320 |
| Number of unpublished observations | 71 |
| RMS of observations | 0.331 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) |
| 2024-01 | 0.055 | 0.053 |
| 2024-07 | 0.094 | 0.051 |
| 2025-01 | 0.064 | 0.061 |
| 2025-07 | 0.113 | 0.056 |
| 2026-01 | 0.078 | 0.070 |
| 2026-07 | 0.134 | 0.063 |
| 2027-01 | 0.098 | 0.081 |
| 2027-07 | 0.159 | 0.070 |
| 2028-01 | 0.122 | 0.093 |
Ephemeris comparison
Difference between NIMAv11 and JPL28 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.