(120216) 2004EW95
This object has a more recent orbit available here
Object
| Object | (120216) 2004EW95 |
| Diameter(1) | 291 km |
| Dynamic class(1) | plutino |
| Absolute magnitude | 6.61 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460400.5 |
| Semi major axis | 39.173741 ± 0.002052 au |
| Eccentricity | 0.311638000 ± 0.000030291 |
| Inclination | 29.324609426 ± 0.000046726 ° |
| Longitude of ascending node | 25.815164 ± 0.000028 ° |
| Argument of perihelia | 204.512124 ± 0.001620 ° |
| Mean anomaly | 8.843463 ± 0.000338 ° |
| Orbital period | 245.19 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 120216_2004EW95_nima_v1.bsp |
| Date of first observation | 2001-03-12 |
| Date of last observation | 2023-06-17 |
| Number of observations used in the fit | 237 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 239 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.202 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.287 | 0.171 |
| 2024-07 | 0.246 | 0.221 |
| 2025-01 | 0.354 | 0.197 |
| 2025-07 | 0.315 | 0.259 |
| 2026-01 | 0.431 | 0.224 |
| 2026-07 | 0.400 | 0.299 |
| 2027-01 | 0.521 | 0.249 |
| 2027-07 | 0.499 | 0.336 |
| 2028-01 | 0.623 | 0.270 |
Ephemeris comparison
Difference between NIMAv1 and JPL9 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.