(78799) 2002XW93
This object has a more recent orbit available here
Object
| Object | (78799) 2002XW93 |
| Diameter(1) | 565 km |
| Dynamic class(1) | otherTNO |
| Absolute magnitude | 4.98 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2455925.81051335 |
| Semi major axis | 37.646761 ± 0.002610 au |
| Eccentricity | 0.246324785 ± 0.000041114 |
| Inclination | 14.327197404 ± 0.000832043 ° |
| Longitude of ascending node | 46.735119 ± 0.002107 ° |
| Argument of perihelia | 248.692267 ± 0.011009 ° |
| Mean anomaly | 132.364978 ± 0.013683 ° |
| Orbital period | 230.99 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 78799_2002XW93_nima_v2.bsp |
| Date of first observation | 1989-12-17 |
| Date of last observation | 2016-02-21 |
| Number of observations used in the fit | 81 |
| Number of rejected observations | 1 |
| Number of DES observations | 0 |
| Number of MPC observations | 82 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.237 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.370 | 0.161 |
| 2021-07 | 0.397 | 0.156 |
| 2022-01 | 0.435 | 0.174 |
| 2022-07 | 0.462 | 0.168 |
| 2023-01 | 0.506 | 0.188 |
| 2023-07 | 0.533 | 0.180 |
| 2024-01 | 0.581 | 0.200 |
| 2024-07 | 0.608 | 0.191 |
| 2025-01 | 0.662 | 0.213 |
Ephemeris comparison
Difference between NIMAv2 and JPL3 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.