(307261) 2002MS4
Object
| Object |
(307261) 2002MS4 |
| Diameter(1) |
934 km |
| Dynamic class(1) |
cubewano |
| Absolute magnitude |
3.60 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2458200.5 |
| Semi major axis |
41.924493 ± 0.000188 au |
| Eccentricity |
0.140009274 ± 0.000003520 |
| Inclination |
17.667696906 ± 0.000050922 ° |
| Longitude of ascending node |
215.902736 ± 0.000248 ° |
| Argument of perihelia |
214.232164 ± 0.001397 ° |
| Mean anomaly |
220.520654 ± 0.001494 ° |
| Orbital period |
271.46 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv9 |
| Observation file (documentation) |
omc_ast_NIMAv9.txt |
| bsp file |
307261_2002MS4_nima_v9.bsp |
| Date of first observation |
1954-04-08 |
| Date of last observation |
2021-02-24 |
| Number of observations used in the fit |
183 |
| Number of rejected observations |
9 |
| Number of DES observations |
0 |
| Number of MPC observations |
78 |
| Number of unpublished observations |
114 |
| RMS of observations |
0.153 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv9 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2021-01 |
0.004 |
0.004 |
| 2021-07 |
0.006 |
0.005 |
| 2022-01 |
0.007 |
0.006 |
| 2022-07 |
0.010 |
0.007 |
| 2023-01 |
0.011 |
0.008 |
| 2023-07 |
0.013 |
0.010 |
| 2024-01 |
0.015 |
0.010 |
| 2024-07 |
0.018 |
0.012 |
| 2025-01 |
0.019 |
0.013 |
Ephemeris comparison
Difference between NIMAv9 and JPL17 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