(3317) Paris
Object
Object |
(3317) Paris |
Diameter(1) |
119 km |
Dynamic class(1) |
trojan |
Absolute magnitude |
8.40 |
G slop |
0.15 |
Orbital elements
Epoch (Julian date) |
2458600.5 |
Semi major axis |
5.221142 ± 0.000000 au |
Eccentricity |
0.127299748 ± 0.000000008 |
Inclination |
27.870169769 ± 0.000000444 ° |
Longitude of ascending node |
135.903455 ± 0.000001 ° |
Argument of perihelia |
149.979789 ± 0.000005 ° |
Mean anomaly |
278.616704 ± 0.000005 ° |
Orbital period |
11.93 yr |
Ephemeris & Observations
Ephemeris version |
NIMAv7 |
Observation file (documentation) |
omc_ast_NIMAv7.txt |
bsp file |
3317_Paris_nima_v7.bsp |
Date of first observation |
1963-08-21 |
Date of last observation |
2022-09-03 |
Number of observations used in the fit |
3419 |
Number of rejected observations |
18 |
Number of DES observations |
0 |
Number of MPC observations |
3201 |
Number of unpublished observations |
30 |
RMS of observations |
0.096 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) |
2022-01 |
0.004 |
0.001 |
2022-07 |
0.007 |
0.002 |
2023-01 |
0.006 |
0.002 |
2023-07 |
0.011 |
0.002 |
2024-01 |
0.010 |
0.002 |
2024-07 |
0.012 |
0.003 |
2025-01 |
0.013 |
0.003 |
2025-07 |
0.012 |
0.004 |
2026-01 |
0.015 |
0.005 |
Ephemeris comparison
Difference between NIMAv7 and JPL61 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