2004XR190
Warning: this prediction has been discarded after an update.
Object
| Object | 2004XR190 |
| Diameter(1) | 612 km |
| Dynamic class(1) | SDO |
| Absolute magnitude | 4.30 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458200.5 |
| Semi major axis | 57.335929 ± 0.005353 au |
| Eccentricity | 0.109046946 ± 0.000041456 |
| Inclination | 46.778616221 ± 0.000755876 ° |
| Longitude of ascending node | 252.397986 ± 0.000492 ° |
| Argument of perihelia | 284.929465 ± 0.037783 ° |
| Mean anomaly | 276.972013 ± 0.038724 ° |
| Orbital period | 434.16 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 2004XR190_nima_v2.bsp |
| Date of first observation | 2002-12-06 |
| Date of last observation | 2021-01-22 |
| Number of observations used in the fit | 114 |
| Number of rejected observations | 1 |
| Number of DES observations | 0 |
| Number of MPC observations | 114 |
| Number of unpublished observations | 1 |
| RMS of observations | 0.181 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2020-01 | 0.026 | 0.018 |
| 2020-07 | 0.089 | 0.034 |
| 2021-01 | 0.034 | 0.010 |
| 2021-07 | 0.103 | 0.031 |
| 2022-01 | 0.050 | 0.021 |
| 2022-07 | 0.121 | 0.036 |
| 2023-01 | 0.071 | 0.040 |
| 2023-07 | 0.143 | 0.049 |
| 2024-01 | 0.097 | 0.063 |
Ephemeris comparison
Difference between NIMAv2 and JPL8 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.