(19844) 2000ST317
This object has a more recent orbit available here
Object
| Object | (19844) 2000ST317 |
| Diameter(1) | 39 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 11.05 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 5.193624 ± 0.000000 au |
| Eccentricity | 0.050601246 ± 0.000000060 |
| Inclination | 40.425146146 ± 0.000009306 ° |
| Longitude of ascending node | 207.545750 ± 0.000010 ° |
| Argument of perihelia | 103.958409 ± 0.000101 ° |
| Mean anomaly | 355.679949 ± 0.000099 ° |
| Orbital period | 11.84 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 19844_2000ST317_nima_v4.bsp |
| Date of first observation | 1951-07-08 |
| Date of last observation | 2022-07-07 |
| Number of observations used in the fit | 1897 |
| Number of rejected observations | 17 |
| Number of DES observations | 28 |
| Number of MPC observations | 1886 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.406 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) |
| 2022-01 | 0.033 | 0.027 |
| 2022-07 | 0.051 | 0.040 |
| 2023-01 | 0.043 | 0.032 |
| 2023-07 | 0.055 | 0.038 |
| 2024-01 | 0.049 | 0.032 |
| 2024-07 | 0.050 | 0.032 |
| 2025-01 | 0.053 | 0.030 |
| 2025-07 | 0.046 | 0.026 |
| 2026-01 | 0.056 | 0.031 |
Ephemeris comparison
Difference between NIMAv4 and JPL37 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.