(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 | 4.30 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 42.358482 ± 0.001351 au |
| Eccentricity | 0.101554423 ± 0.000012043 |
| Inclination | 23.924720978 ± 0.000016497 ° |
| Longitude of ascending node | 280.029973 ± 0.000175 ° |
| Argument of perihelia | 313.261801 ± 0.012653 ° |
| Mean anomaly | 125.192324 ± 0.013534 ° |
| Orbital period | 275.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv9 |
| Observation file |
omc_ast_NIMAv9.txt |
| bsp file | 120347_Salacia_nima_v9.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2021-11-01 |
| Number of observations used in the fit | 374 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 340 |
| Number of unpublished observations | 36 |
| RMS of observations | 0.523 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv9 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.058 | 0.055 |
| 2022-07 | 0.074 | 0.050 |
| 2023-01 | 0.064 | 0.058 |
| 2023-07 | 0.085 | 0.056 |
| 2024-01 | 0.072 | 0.062 |
| 2024-07 | 0.097 | 0.062 |
| 2025-01 | 0.080 | 0.067 |
| 2025-07 | 0.110 | 0.069 |
| 2026-01 | 0.091 | 0.072 |
Ephemeris comparison
Difference between NIMAv9 and JPL25 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.