(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 | 41.947460 ± 0.002271 au |
| Eccentricity | 0.109697452 ± 0.000016941 |
| Inclination | 23.924558657 ± 0.000048188 ° |
| Longitude of ascending node | 279.955383 ± 0.000785 ° |
| Argument of perihelia | 309.614737 ± 0.018973 ° |
| Mean anomaly | 122.919944 ± 0.021674 ° |
| Orbital period | 271.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 120347_Salacia_nima_v4.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2017-09-21 |
| Number of observations used in the fit | 115 |
| Number of rejected observations | 31 |
| Number of DES observations | 0 |
| Number of MPC observations | 124 |
| Number of unpublished observations | 22 |
| RMS of observations | 0.196 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.104 | 0.084 |
| 2018-07 | 0.221 | 0.113 |
| 2019-01 | 0.127 | 0.094 |
| 2019-07 | 0.251 | 0.129 |
| 2020-01 | 0.154 | 0.105 |
| 2020-07 | 0.284 | 0.145 |
| 2021-01 | 0.184 | 0.118 |
| 2021-07 | 0.320 | 0.163 |
| 2022-01 | 0.217 | 0.132 |
Ephemeris comparison
Difference between NIMAv4 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.