(134340) Pluto
This object has a more recent orbit available here
Object
| Object | (134340) Pluto |
| Diameter(1) | 2377 km |
| Dynamic class(1) | plutino |
| Absolute magnitude | -0.76 |
| G slop | 0.12 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 39.846028 ± 0.000114 au |
| Eccentricity | 0.253752224 ± 0.000001671 |
| Inclination | 17.103375397 ± 0.000012326 ° |
| Longitude of ascending node | 110.297275 ± 0.000041 ° |
| Argument of perihelia | 115.011241 ± 0.000253 ° |
| Mean anomaly | 41.547288 ± 0.000302 ° |
| Orbital period | 251.53 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv8 |
| Observation file |
omc_ast_NIMAv8.txt |
| bsp file | 134340_Pluto_nima_v8.bsp |
| Date of first observation | 1988-06-09 |
| Date of last observation | 2016-07-19 |
| Number of observations used in the fit | 19 |
| Number of rejected observations | 4 |
| Number of DES observations | 0 |
| Number of MPC observations | 0 |
| Number of unpublished observations | 23 |
| RMS of observations | 0.002 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv8 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.003 | 0.002 |
| 2018-07 | 0.005 | 0.002 |
| 2019-01 | 0.005 | 0.002 |
| 2019-07 | 0.007 | 0.002 |
| 2020-01 | 0.007 | 0.002 |
| 2020-07 | 0.010 | 0.002 |
| 2021-01 | 0.009 | 0.002 |
| 2021-07 | 0.012 | 0.002 |
| 2022-01 | 0.011 | 0.002 |
Ephemeris comparison
Difference between NIMAv8 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.