(19844) 2000ST317
Object
| Object |
(19844) 2000ST317 |
| Diameter(1) |
39 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
11.07 |
| G slop |
0.15 |
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 (documentation) |
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| Number of unpublished observations |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.
Previous NIMA versions