(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 | 55.241955 ± 0.002547 au |
| Eccentricity | 0.413012782 ± 0.000023186 |
| Inclination | 7.555021830 ± 0.000070680 ° |
| Longitude of ascending node | 265.104005 ± 0.001312 ° |
| Argument of perihelia | 112.012028 ± 0.001020 ° |
| Mean anomaly | 12.979081 ± 0.001284 ° |
| Orbital period | 410.59 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 143707_2003UY117_nima_v3.bsp |
| Date of first observation | 2001-07-26 |
| Date of last observation | 2020-09-14 |
| Number of observations used in the fit | 363 |
| Number of rejected observations | 8 |
| Number of DES observations | 3 |
| Number of MPC observations | 333 |
| Number of unpublished observations | 35 |
| RMS of observations | 0.161 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2020-01 | 0.064 | 0.047 |
| 2020-07 | 0.065 | 0.047 |
| 2021-01 | 0.074 | 0.052 |
| 2021-07 | 0.079 | 0.052 |
| 2022-01 | 0.085 | 0.057 |
| 2022-07 | 0.096 | 0.057 |
| 2023-01 | 0.100 | 0.062 |
| 2023-07 | 0.115 | 0.062 |
| 2024-01 | 0.116 | 0.068 |
Ephemeris comparison
Difference between NIMAv3 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.