(50000) Quaoar
Object
| Object |
(50000) Quaoar |
| Diameter(1) |
1110 km |
| Dynamic class(1) |
cubewano |
| Absolute magnitude |
2.51 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
43.472032 ± 0.000071 au |
| Eccentricity |
0.040988827 ± 0.000000970 |
| Inclination |
7.991223020 ± 0.000000682 ° |
| Longitude of ascending node |
189.090343 ± 0.000031 ° |
| Argument of perihelia |
155.214400 ± 0.001594 ° |
| Mean anomaly |
296.223173 ± 0.001580 ° |
| Orbital period |
286.63 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv18 |
| Observation file (documentation) |
omc_ast_NIMAv18.txt |
| bsp file |
50000_Quaoar_nima_v18.bsp |
| Date of first observation |
1954-05-25 |
| Date of last observation |
2023-05-26 |
| Number of observations used in the fit |
1113 |
| Number of rejected observations |
162 |
| Number of DES observations |
0 |
| Number of MPC observations |
702 |
| Number of unpublished observations |
475 |
| RMS of observations |
0.076 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv18 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2022-01 |
0.002 |
0.002 |
| 2022-07 |
0.002 |
0.002 |
| 2023-01 |
0.002 |
0.002 |
| 2023-07 |
0.003 |
0.002 |
| 2024-01 |
0.003 |
0.002 |
| 2024-07 |
0.004 |
0.002 |
| 2025-01 |
0.004 |
0.002 |
| 2025-07 |
0.005 |
0.003 |
| 2026-01 |
0.006 |
0.003 |
Ephemeris comparison
Difference between NIMAv18 and JPL44 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.
Previous NIMA versions