(19844) 2000ST317
Object
| Object |
(19844) 2000ST317 |
| Diameter(1) |
39 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
11.05 |
| G slop |
0.15 |
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 (documentation) |
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| Number of unpublished observations |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.
Previous NIMA versions