(143707) 2003UY117
This object has a more recent orbit available here
Object
| Object | (143707) 2003UY117 |
| Diameter(1) | 321 km |
| Dynamic class(1) | res2:5 |
| Absolute magnitude | 5.70 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 55.241693 ± 0.002518 au |
| Eccentricity | 0.413010045 ± 0.000022895 |
| Inclination | 7.555013221 ± 0.000064901 ° |
| Longitude of ascending node | 265.104088 ± 0.001266 ° |
| Argument of perihelia | 112.012291 ± 0.000763 ° |
| Mean anomaly | 12.979043 ± 0.001270 ° |
| Orbital period | 410.59 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 143707_2003UY117_nima_v4.bsp |
| Date of first observation | 2001-07-26 |
| Date of last observation | 2020-11-08 |
| Number of observations used in the fit | 386 |
| Number of rejected observations | 13 |
| Number of DES observations | 3 |
| Number of MPC observations | 347 |
| Number of unpublished observations | 49 |
| RMS of observations | 0.158 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) |
| 2021-01 | 0.042 | 0.015 |
| 2021-07 | 0.019 | 0.010 |
| 2022-01 | 0.040 | 0.016 |
| 2022-07 | 0.029 | 0.013 |
| 2023-01 | 0.041 | 0.018 |
| 2023-07 | 0.041 | 0.016 |
| 2024-01 | 0.045 | 0.020 |
| 2024-07 | 0.056 | 0.019 |
| 2025-01 | 0.052 | 0.023 |
Ephemeris comparison
Difference between NIMAv4 and JPL8 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.