(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 | 11.08 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.197591 ± 0.000000 au |
| Eccentricity | 0.050523537 ± 0.000000052 |
| Inclination | 40.424621807 ± 0.000007959 ° |
| Longitude of ascending node | 207.541204 ± 0.000009 ° |
| Argument of perihelia | 105.740309 ± 0.000091 ° |
| Mean anomaly | 60.642426 ± 0.000087 ° |
| Orbital period | 11.85 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv5 |
| Observation file |
omc_ast_NIMAv5.txt |
| bsp file | 19844_2000ST317_nima_v5.bsp |
| Date of first observation | 1951-07-08 |
| Date of last observation | 2024-07-12 |
| Number of observations used in the fit | 2577 |
| Number of rejected observations | 135 |
| Number of DES observations | 28 |
| Number of MPC observations | 2684 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.410 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.035 | 0.026 |
| 2024-07 | 0.038 | 0.026 |
| 2025-01 | 0.041 | 0.025 |
| 2025-07 | 0.039 | 0.023 |
| 2026-01 | 0.049 | 0.029 |
| 2026-07 | 0.043 | 0.023 |
| 2027-01 | 0.058 | 0.034 |
| 2027-07 | 0.047 | 0.025 |
| 2028-01 | 0.065 | 0.034 |
Ephemeris comparison
Difference between NIMAv5 and JPL48 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.