(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Number of unpublished observations |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