(54598) Bienor
This object has a more recent orbit available here
Object
| Object | (54598) Bienor |
| Diameter(1) | 150 km |
| Dynamic class(1) | Centaur |
| Absolute magnitude | 7.56 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 16.584001 ± 0.000004 au |
| Eccentricity | 0.204375463 ± 0.000000138 |
| Inclination | 20.731848152 ± 0.000000759 ° |
| Longitude of ascending node | 337.773829 ± 0.000008 ° |
| Argument of perihelia | 152.196907 ± 0.000064 ° |
| Mean anomaly | 343.127607 ± 0.000041 ° |
| Orbital period | 67.54 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv20 |
| Observation file |
omc_ast_NIMAv20.txt |
| bsp file | 54598_Bienor_nima_v20.bsp |
| Date of first observation | 1953-01-12 |
| Date of last observation | 2024-03-30 |
| Number of observations used in the fit | 1408 |
| Number of rejected observations | 6 |
| Number of DES observations | 0 |
| Number of MPC observations | 1092 |
| Number of unpublished observations | 322 |
| RMS of observations | 0.326 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv20 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.008 | 0.006 |
| 2024-07 | 0.008 | 0.007 |
| 2025-01 | 0.013 | 0.008 |
| 2025-07 | 0.013 | 0.009 |
| 2026-01 | 0.019 | 0.012 |
| 2026-07 | 0.018 | 0.013 |
| 2027-01 | 0.026 | 0.018 |
| 2027-07 | 0.024 | 0.019 |
| 2028-01 | 0.034 | 0.026 |
Ephemeris comparison
Difference between NIMAv20 and JPL73 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.