(120347) Salacia
This object has a more recent orbit available here
Object
| Object | (120347) Salacia |
| Diameter(1) | 854 km |
| Dynamic class(1) | cubewano |
| Absolute magnitude | 4.00 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458200.5 |
| Semi major axis | 41.948203 ± 0.001326 au |
| Eccentricity | 0.109689417 ± 0.000013176 |
| Inclination | 23.924554984 ± 0.000016594 ° |
| Longitude of ascending node | 279.955245 ± 0.000177 ° |
| Argument of perihelia | 309.621083 ± 0.011311 ° |
| Mean anomaly | 122.913577 ± 0.011937 ° |
| Orbital period | 271.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv8 |
| Observation file |
omc_ast_NIMAv8.txt |
| bsp file | 120347_Salacia_nima_v8.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2021-10-26 |
| Number of observations used in the fit | 370 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 336 |
| Number of unpublished observations | 36 |
| RMS of observations | 0.526 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv8 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.054 | 0.052 |
| 2021-07 | 0.066 | 0.046 |
| 2022-01 | 0.059 | 0.055 |
| 2022-07 | 0.074 | 0.051 |
| 2023-01 | 0.065 | 0.059 |
| 2023-07 | 0.085 | 0.057 |
| 2024-01 | 0.072 | 0.063 |
| 2024-07 | 0.097 | 0.063 |
| 2025-01 | 0.081 | 0.068 |
Ephemeris comparison
Difference between NIMAv8 and JPL24 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.