(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 | 42.357774 ± 0.000306 au |
| Eccentricity | 0.101563240 ± 0.000002990 |
| Inclination | 23.924727973 ± 0.000002415 ° |
| Longitude of ascending node | 280.030162 ± 0.000039 ° |
| Argument of perihelia | 313.255744 ± 0.003203 ° |
| Mean anomaly | 125.198216 ± 0.003558 ° |
| Orbital period | 275.68 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv11 |
| Observation file |
omc_ast_NIMAv11.txt |
| bsp file | 120347_Salacia_nima_v11.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2024-07-05 |
| Number of observations used in the fit | 679 |
| Number of rejected observations | 2 |
| Number of DES observations | 0 |
| Number of MPC observations | 394 |
| Number of unpublished observations | 42 |
| RMS of observations | 0.115 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv11 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.010 | 0.011 |
| 2024-07 | 0.013 | 0.007 |
| 2025-01 | 0.010 | 0.011 |
| 2025-07 | 0.016 | 0.009 |
| 2026-01 | 0.011 | 0.012 |
| 2026-07 | 0.019 | 0.010 |
| 2027-01 | 0.013 | 0.013 |
| 2027-07 | 0.023 | 0.012 |
| 2028-01 | 0.016 | 0.013 |
Ephemeris comparison
Difference between NIMAv11 and JPL33 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.