(307261) 2002MS4
Object
Object |
(307261) 2002MS4 |
Diameter(1) |
934 km |
Dynamic class(1) |
cubewano |
Absolute magnitude |
3.68 |
G slop |
0.15 |
Orbital elements
Epoch (Julian date) |
2459800.5 |
Semi major axis |
41.907410 ± 0.000279 au |
Eccentricity |
0.144061144 ± 0.000005583 |
Inclination |
17.706927419 ± 0.000014750 ° |
Longitude of ascending node |
216.224998 ± 0.000114 ° |
Argument of perihelia |
212.535740 ± 0.001228 ° |
Mean anomaly |
228.381654 ± 0.001490 ° |
Orbital period |
271.30 yr |
Ephemeris & Observations
Ephemeris version |
NIMAv10 |
Observation file (documentation) |
omc_ast_NIMAv10.txt |
bsp file |
307261_2002MS4_nima_v10.bsp |
Date of first observation |
1954-04-08 |
Date of last observation |
2022-07-04 |
Number of observations used in the fit |
233 |
Number of rejected observations |
6 |
Number of DES observations |
0 |
Number of MPC observations |
128 |
Number of unpublished observations |
111 |
RMS of observations |
0.140 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv10 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
date |
σα (arcsec) |
σδ (arcsec) |
2022-01 |
0.010 |
0.007 |
2022-07 |
0.014 |
0.008 |
2023-01 |
0.015 |
0.009 |
2023-07 |
0.019 |
0.010 |
2024-01 |
0.020 |
0.011 |
2024-07 |
0.025 |
0.013 |
2025-01 |
0.026 |
0.013 |
2025-07 |
0.032 |
0.016 |
2026-01 |
0.033 |
0.016 |
Ephemeris comparison
Difference between NIMAv10 and JPL18 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