(3451) Mentor
Object
| Object |
(3451) Mentor |
| Diameter(1) |
126 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.52 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
5.192753 ± 0.000000 au |
| Eccentricity |
0.075132321 ± 0.000000007 |
| Inclination |
24.584050635 ± 0.000000156 ° |
| Longitude of ascending node |
179.504537 ± 0.000000 ° |
| Argument of perihelia |
134.434956 ± 0.000005 ° |
| Mean anomaly |
92.727771 ± 0.000003 ° |
| Orbital period |
11.83 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv7 |
| Observation file (documentation) |
omc_ast_NIMAv7.txt |
| bsp file |
3451_Mentor_nima_v7.bsp |
| Date of first observation |
1950-04-21 |
| Date of last observation |
2025-02-18 |
| Number of observations used in the fit |
5844 |
| Number of rejected observations |
22 |
| Number of DES observations |
0 |
| Number of MPC observations |
5231 |
| Number of unpublished observations |
7 |
| RMS of observations |
0.140 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.009 |
0.001 |
| 2024-07 |
0.010 |
0.001 |
| 2025-01 |
0.012 |
0.001 |
| 2025-07 |
0.011 |
0.001 |
| 2026-01 |
0.014 |
0.001 |
| 2026-07 |
0.011 |
0.001 |
| 2027-01 |
0.015 |
0.001 |
| 2027-07 |
0.011 |
0.000 |
| 2028-01 |
0.014 |
0.001 |
Ephemeris comparison
Difference between NIMAv7 and JPL109 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