(55636) 2002TX300
This object has a more recent orbit available here
Object
Object | (55636) 2002TX300 |
Diameter(1) | 286 km |
Dynamic class(1) | Haumea |
Absolute magnitude | 3.40 |
G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
Epoch (Julian date) | 2458600.5 |
Semi major axis | 43.144997 ± 0.000694 au |
Eccentricity | 0.125333788 ± 0.000008241 |
Inclination | 25.841831380 ± 0.000116058 ° |
Longitude of ascending node | 324.479721 ± 0.000312 ° |
Argument of perihelia | 339.047220 ± 0.004085 ° |
Mean anomaly | 77.631812 ± 0.005192 ° |
Orbital period | 283.40 yr |
Ephemeris & Observations
Ephemeris version | NIMAv6 |
Observation file |
omc_ast_NIMAv6.txt |
bsp file | 55636_2002TX300_nima_v6.bsp |
Date of first observation | 1954-08-27 |
Date of last observation | 2019-11-04 |
Number of observations used in the fit | 462 |
Number of rejected observations | 5 |
Number of DES observations | 0 |
Number of MPC observations | 417 |
Number of unpublished observations | 50 |
RMS of observations | 0.257 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) |
2019-01 | 0.043 | 0.041 |
2019-07 | 0.053 | 0.042 |
2020-01 | 0.046 | 0.044 |
2020-07 | 0.061 | 0.046 |
2021-01 | 0.049 | 0.048 |
2021-07 | 0.071 | 0.051 |
2022-01 | 0.054 | 0.053 |
2022-07 | 0.082 | 0.057 |
2023-01 | 0.061 | 0.058 |
Ephemeris comparison

Difference between NIMAv6 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.