(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 | 41.947308 ± 0.002151 au |
| Eccentricity | 0.109697861 ± 0.000016905 |
| Inclination | 23.924566098 ± 0.000047693 ° |
| Longitude of ascending node | 279.955441 ± 0.000760 ° |
| Argument of perihelia | 309.613248 ± 0.017852 ° |
| Mean anomaly | 122.921556 ± 0.020315 ° |
| Orbital period | 271.68 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv5 |
| Observation file |
omc_ast_NIMAv5.txt |
| bsp file | 120347_Salacia_nima_v5.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2018-08-14 |
| Number of observations used in the fit | 118 |
| Number of rejected observations | 31 |
| Number of DES observations | 0 |
| Number of MPC observations | 127 |
| Number of unpublished observations | 22 |
| RMS of observations | 0.215 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2019-01 | 0.119 | 0.092 |
| 2019-07 | 0.226 | 0.119 |
| 2020-01 | 0.142 | 0.102 |
| 2020-07 | 0.256 | 0.134 |
| 2021-01 | 0.169 | 0.114 |
| 2021-07 | 0.289 | 0.150 |
| 2022-01 | 0.199 | 0.127 |
| 2022-07 | 0.325 | 0.167 |
| 2023-01 | 0.232 | 0.142 |
Ephemeris comparison
Difference between NIMAv5 and JPL15 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.