(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 | 42.358444 ± 0.001290 au |
| Eccentricity | 0.101554832 ± 0.000011907 |
| Inclination | 23.924723214 ± 0.000014459 ° |
| Longitude of ascending node | 280.029994 ± 0.000159 ° |
| Argument of perihelia | 313.261440 ± 0.011964 ° |
| Mean anomaly | 125.192676 ± 0.012725 ° |
| Orbital period | 275.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv10 |
| Observation file |
omc_ast_NIMAv10.txt |
| bsp file | 120347_Salacia_nima_v10.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2023-08-13 |
| Number of observations used in the fit | 398 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 360 |
| Number of unpublished observations | 40 |
| RMS of observations | 0.508 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv10 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.058 | 0.053 |
| 2023-07 | 0.066 | 0.047 |
| 2024-01 | 0.063 | 0.056 |
| 2024-07 | 0.076 | 0.053 |
| 2025-01 | 0.070 | 0.060 |
| 2025-07 | 0.086 | 0.058 |
| 2026-01 | 0.077 | 0.064 |
| 2026-07 | 0.099 | 0.064 |
| 2027-01 | 0.086 | 0.068 |
Ephemeris comparison
Difference between NIMAv10 and JPL30 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.