(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 | 41.948132 ± 0.001249 au |
| Eccentricity | 0.109689581 ± 0.000012578 |
| Inclination | 23.924551683 ± 0.000029860 ° |
| Longitude of ascending node | 279.955219 ± 0.000487 ° |
| Argument of perihelia | 309.620420 ± 0.009956 ° |
| Mean anomaly | 122.914351 ± 0.011051 ° |
| Orbital period | 271.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv7 |
| Observation file |
omc_ast_NIMAv7.txt |
| bsp file | 120347_Salacia_nima_v7.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2020-11-07 |
| Number of observations used in the fit | 337 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 307 |
| Number of unpublished observations | 32 |
| RMS of observations | 0.549 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.063 | 0.059 |
| 2021-07 | 0.081 | 0.056 |
| 2022-01 | 0.071 | 0.063 |
| 2022-07 | 0.093 | 0.063 |
| 2023-01 | 0.080 | 0.068 |
| 2023-07 | 0.106 | 0.070 |
| 2024-01 | 0.090 | 0.074 |
| 2024-07 | 0.120 | 0.078 |
| 2025-01 | 0.102 | 0.080 |
Ephemeris comparison
Difference between NIMAv7 and JPL22 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.