(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 | 41.948196 ± 0.001275 au |
| Eccentricity | 0.109687533 ± 0.000013014 |
| Inclination | 23.924547853 ± 0.000031678 ° |
| Longitude of ascending node | 279.955185 ± 0.000500 ° |
| Argument of perihelia | 309.620722 ± 0.010163 ° |
| Mean anomaly | 122.914238 ± 0.011272 ° |
| Orbital period | 271.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 120347_Salacia_nima_v6.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2020-08-27 |
| Number of observations used in the fit | 295 |
| Number of rejected observations | 1 |
| Number of DES observations | 0 |
| Number of MPC observations | 264 |
| Number of unpublished observations | 32 |
| RMS of observations | 0.575 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2020-01 | 0.064 | 0.060 |
| 2020-07 | 0.079 | 0.057 |
| 2021-01 | 0.072 | 0.065 |
| 2021-07 | 0.090 | 0.064 |
| 2022-01 | 0.081 | 0.070 |
| 2022-07 | 0.103 | 0.071 |
| 2023-01 | 0.091 | 0.076 |
| 2023-07 | 0.117 | 0.079 |
| 2024-01 | 0.103 | 0.082 |
Ephemeris comparison
Difference between NIMAv6 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.