(3451) Mentor
Object
| Object |
(3451) Mentor |
| Diameter(1) |
126 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.50 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2458200.5 |
| Semi major axis |
5.138179 ± 0.000000 au |
| Eccentricity |
0.069160786 ± 0.000000064 |
| Inclination |
24.654198862 ± 0.000005316 ° |
| Longitude of ascending node |
179.660764 ± 0.000010 ° |
| Argument of perihelia |
131.488074 ± 0.000076 ° |
| Mean anomaly |
236.386309 ± 0.000073 ° |
| Orbital period |
11.65 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv3 |
| Observation file (documentation) |
omc_ast_NIMAv3.txt |
| bsp file |
3451_Mentor_nima_v3.bsp |
| Date of first observation |
1950-04-21 |
| Date of last observation |
2020-08-04 |
| Number of observations used in the fit |
2755 |
| Number of rejected observations |
18 |
| Number of DES observations |
0 |
| Number of MPC observations |
2769 |
| Number of unpublished observations |
4 |
| RMS of observations |
0.451 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) |
| 2020-01 |
0.015 |
0.012 |
| 2020-07 |
0.023 |
0.020 |
| 2021-01 |
0.024 |
0.017 |
| 2021-07 |
0.043 |
0.027 |
| 2022-01 |
0.034 |
0.019 |
| 2022-07 |
0.055 |
0.026 |
| 2023-01 |
0.044 |
0.018 |
| 2023-07 |
0.054 |
0.017 |
| 2024-01 |
0.051 |
0.013 |
Ephemeris comparison
Difference between NIMAv3 and JPL70 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