(54598) Bienor
This object has a more recent orbit available here
Object
| Object | (54598) Bienor |
| Diameter(1) | 198 km |
| Dynamic class(1) | Centaur |
| Absolute magnitude | 7.54 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 16.511359 ± 0.000004 au |
| Eccentricity | 0.200887287 ± 0.000000275 |
| Inclination | 20.745243220 ± 0.000001829 ° |
| Longitude of ascending node | 337.704538 ± 0.000027 ° |
| Argument of perihelia | 152.495604 ± 0.000074 ° |
| Mean anomaly | 331.074863 ± 0.000046 ° |
| Orbital period | 67.09 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv17 |
| Observation file |
omc_ast_NIMAv17.txt |
| bsp file | 54598_Bienor_nima_v17.bsp |
| Date of first observation | 1953-01-12 |
| Date of last observation | 2022-02-27 |
| Number of observations used in the fit | 1204 |
| Number of rejected observations | 5 |
| Number of DES observations | 0 |
| Number of MPC observations | 889 |
| Number of unpublished observations | 320 |
| RMS of observations | 0.306 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv17 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.031 | 0.016 |
| 2022-07 | 0.035 | 0.016 |
| 2023-01 | 0.045 | 0.021 |
| 2023-07 | 0.046 | 0.022 |
| 2024-01 | 0.060 | 0.028 |
| 2024-07 | 0.059 | 0.030 |
| 2025-01 | 0.076 | 0.039 |
| 2025-07 | 0.071 | 0.041 |
| 2026-01 | 0.091 | 0.054 |
Ephemeris comparison
Difference between NIMAv17 and JPL63 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.