(3451) Mentor
Object
Object |
(3451) Mentor |
Diameter(1) |
126 km |
Dynamic class(1) |
trojan |
Absolute magnitude |
8.54 |
G slop |
0.15 |
Orbital elements
Epoch (Julian date) |
2460600.5 |
Semi major axis |
5.190236 ± 0.000000 au |
Eccentricity |
0.075601056 ± 0.000000007 |
Inclination |
24.593693590 ± 0.000000155 ° |
Longitude of ascending node |
179.529517 ± 0.000000 ° |
Argument of perihelia |
134.009292 ± 0.000005 ° |
Mean anomaly |
76.411850 ± 0.000003 ° |
Orbital period |
11.82 yr |
Ephemeris & Observations
Ephemeris version |
NIMAv6 |
Observation file (documentation) |
omc_ast_NIMAv6.txt |
bsp file |
3451_Mentor_nima_v6.bsp |
Date of first observation |
1950-04-21 |
Date of last observation |
2024-07-12 |
Number of observations used in the fit |
5239 |
Number of rejected observations |
22 |
Number of DES observations |
0 |
Number of MPC observations |
4626 |
Number of unpublished observations |
7 |
RMS of observations |
0.140 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 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 |
0.015 |
0.001 |
Ephemeris comparison
Difference between NIMAv6 and JPL105 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