(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 | 11.07 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2456833.05065579 |
| Semi major axis | 5.192449 ± 0.000001 au |
| Eccentricity | 0.049292221 ± 0.000000066 |
| Inclination | 40.428324281 ± 0.000010665 ° |
| Longitude of ascending node | 207.531658 ± 0.000011 ° |
| Argument of perihelia | 105.907860 ± 0.000207 ° |
| Mean anomaly | 106.078536 ± 0.000214 ° |
| Orbital period | 11.83 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 19844_2000ST317_nima_v3.bsp |
| Date of first observation | 1951-07-08 |
| Date of last observation | 2020-09-25 |
| Number of observations used in the fit | 1467 |
| Number of rejected observations | 16 |
| Number of DES observations | 28 |
| Number of MPC observations | 1455 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.432 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) |
| 2021-01 | 0.038 | 0.026 |
| 2021-07 | 0.058 | 0.043 |
| 2022-01 | 0.051 | 0.034 |
| 2022-07 | 0.076 | 0.049 |
| 2023-01 | 0.061 | 0.038 |
| 2023-07 | 0.074 | 0.045 |
| 2024-01 | 0.065 | 0.036 |
| 2024-07 | 0.061 | 0.036 |
| 2025-01 | 0.063 | 0.032 |
Ephemeris comparison
Difference between NIMAv3 and JPL31 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.