(19844) 2000ST317
Object
| Object |
(19844) 2000ST317 |
| Diameter(1) |
39 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
11.08 |
| G slop |
0.15 |
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 (documentation) |
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| Number of unpublished observations |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.
Previous NIMA versions