(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 |
41.907476 ± 0.000147 au |
| Eccentricity |
0.144059838 ± 0.000002518 |
| Inclination |
17.706922858 ± 0.000005405 ° |
| Longitude of ascending node |
216.224961 ± 0.000042 ° |
| Argument of perihelia |
212.535642 ± 0.000990 ° |
| Mean anomaly |
228.381709 ± 0.001199 ° |
| Orbital period |
271.30 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv11 |
| Observation file (documentation) |
omc_ast_NIMAv11.txt |
| bsp file |
307261_2002MS4_nima_v11.bsp |
| Date of first observation |
1954-04-08 |
| Date of last observation |
2023-07-03 |
| Number of observations used in the fit |
355 |
| Number of rejected observations |
9 |
| Number of DES observations |
0 |
| Number of MPC observations |
134 |
| Number of unpublished observations |
115 |
| RMS of observations |
0.089 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv11 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.004 |
0.004 |
| 2023-07 |
0.005 |
0.004 |
| 2024-01 |
0.005 |
0.005 |
| 2024-07 |
0.006 |
0.005 |
| 2025-01 |
0.007 |
0.006 |
| 2025-07 |
0.008 |
0.006 |
| 2026-01 |
0.009 |
0.006 |
| 2026-07 |
0.011 |
0.007 |
| 2027-01 |
0.011 |
0.007 |
Ephemeris comparison
Difference between NIMAv11 and JPL20 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