(134340) Pluto
Object
| Object |
(134340) Pluto |
| Diameter(1) |
2377 km |
| Dynamic class(1) |
plutino |
| Absolute magnitude |
-0.76 |
| G slop |
0.12 |
Orbital elements
| Epoch (Julian date) |
2458600.5 |
| Semi major axis |
39.846034 ± 0.000052 au |
| Eccentricity |
0.253752304 ± 0.000000752 |
| Inclination |
17.103375344 ± 0.000001627 ° |
| Longitude of ascending node |
110.297275 ± 0.000001 ° |
| Argument of perihelia |
115.011251 ± 0.000091 ° |
| Mean anomaly |
41.547273 ± 0.000133 ° |
| Orbital period |
251.53 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv9 |
| Observation file (documentation) |
omc_ast_NIMAv9.txt |
| bsp file |
134340_Pluto_nima_v9.bsp |
| Date of first observation |
1988-06-09 |
| Date of last observation |
2020-06-06 |
| Number of observations used in the fit |
21 |
| Number of rejected observations |
4 |
| Number of DES observations |
0 |
| Number of MPC observations |
0 |
| Number of unpublished observations |
25 |
| RMS of observations |
0.002 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv9 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2021-01 |
0.004 |
0.002 |
| 2021-07 |
0.005 |
0.002 |
| 2022-01 |
0.005 |
0.002 |
| 2022-07 |
0.006 |
0.002 |
| 2023-01 |
0.006 |
0.002 |
| 2023-07 |
0.008 |
0.002 |
| 2024-01 |
0.007 |
0.002 |
| 2024-07 |
0.009 |
0.002 |
| 2025-01 |
0.009 |
0.002 |
Ephemeris comparison
Difference between NIMAv9 and JPLDE436 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