(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Number of unpublished observations | 320 |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.