(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 | 4.99 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460200.5 |
| Semi major axis | 37.605017 ± 0.002538 au |
| Eccentricity | 0.247216942 ± 0.000041893 |
| Inclination | 14.323489424 ± 0.000111321 ° |
| Longitude of ascending node | 46.663477 ± 0.000364 ° |
| Argument of perihelia | 248.749944 ± 0.008489 ° |
| Mean anomaly | 150.536659 ± 0.011100 ° |
| Orbital period | 230.61 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 78799_2002XW93_nima_v4.bsp |
| Date of first observation | 1989-12-17 |
| Date of last observation | 2023-11-27 |
| Number of observations used in the fit | 96 |
| Number of rejected observations | 1 |
| Number of DES observations | 0 |
| Number of MPC observations | 85 |
| Number of unpublished observations | 12 |
| RMS of observations | 0.242 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.141 | 0.112 |
| 2023-07 | 0.137 | 0.115 |
| 2024-01 | 0.154 | 0.120 |
| 2024-07 | 0.153 | 0.122 |
| 2025-01 | 0.170 | 0.128 |
| 2025-07 | 0.170 | 0.129 |
| 2026-01 | 0.188 | 0.137 |
| 2026-07 | 0.191 | 0.136 |
| 2027-01 | 0.210 | 0.145 |
Ephemeris comparison
Difference between NIMAv4 and JPL6 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.