(4867) Polites
This object has a more recent orbit available here
Object
| Object | (4867) Polites |
| Diameter(1) | 64 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 9.97 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.174584 ± 0.000000 au |
| Eccentricity | 0.018545920 ± 0.000000006 |
| Inclination | 27.152382942 ± 0.000000259 ° |
| Longitude of ascending node | 335.183681 ± 0.000000 ° |
| Argument of perihelia | 283.875142 ± 0.000021 ° |
| Mean anomaly | 115.914499 ± 0.000020 ° |
| Orbital period | 11.77 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 4867_Polites_nima_v3.bsp |
| Date of first observation | 1988-09-10 |
| Date of last observation | 2024-07-13 |
| Number of observations used in the fit | 3571 |
| Number of rejected observations | 44 |
| Number of DES observations | 0 |
| Number of MPC observations | 3195 |
| Number of unpublished observations | 1 |
| RMS of observations | 0.129 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.002 | 0.003 |
| 2024-07 | 0.004 | 0.004 |
| 2025-01 | 0.004 | 0.004 |
| 2025-07 | 0.006 | 0.003 |
| 2026-01 | 0.006 | 0.005 |
| 2026-07 | 0.007 | 0.001 |
| 2027-01 | 0.011 | 0.001 |
| 2027-07 | 0.008 | 0.003 |
| 2028-01 | 0.010 | 0.007 |
Ephemeris comparison
Difference between NIMAv3 and JPL53 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.