(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 | 5.50 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 37.339110 ± 0.008267 au |
| Eccentricity | 0.253307604 ± 0.000152066 |
| Inclination | 14.383395303 ± 0.002704764 ° |
| Longitude of ascending node | 46.928719 ± 0.004802 ° |
| Argument of perihelia | 247.106250 ± 0.030180 ° |
| Mean anomaly | 145.469463 ± 0.038494 ° |
| Orbital period | 228.17 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 78799_2002XW93_nima_v1.bsp |
| Date of first observation | 1989-12-17 |
| Date of last observation | 2008-09-20 |
| Number of observations used in the fit | 29 |
| Number of rejected observations | 0 |
| Number of DES observations | 0 |
| Number of MPC observations | 29 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.444 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 2.453 | 0.890 |
| 2018-07 | 2.464 | 0.868 |
| 2019-01 | 2.688 | 0.938 |
| 2019-07 | 2.697 | 0.911 |
| 2020-01 | 2.931 | 0.984 |
| 2020-07 | 2.936 | 0.952 |
| 2021-01 | 3.181 | 1.028 |
| 2021-07 | 3.183 | 0.991 |
| 2022-01 | 3.438 | 1.070 |
Ephemeris comparison
Difference between NIMAv1 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.