(54598) Bienor
Object
| Object |
(54598) Bienor |
| Diameter(1) |
158 km |
| Dynamic class(1) |
Centaur |
| Absolute magnitude |
7.60 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
16.593793 ± 0.000004 au |
| Eccentricity |
0.204976960 ± 0.000000137 |
| Inclination |
20.727018480 ± 0.000000759 ° |
| Longitude of ascending node |
337.791051 ± 0.000008 ° |
| Argument of perihelia |
152.289574 ± 0.000064 ° |
| Mean anomaly |
345.993823 ± 0.000039 ° |
| Orbital period |
67.60 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv21 |
| Observation file (documentation) |
omc_ast_NIMAv21.txt |
| bsp file |
54598_Bienor_nima_v21.bsp |
| Date of first observation |
1953-01-12 |
| Date of last observation |
2025-04-25 |
| Number of observations used in the fit |
1720 |
| Number of rejected observations |
6 |
| Number of DES observations |
0 |
| Number of MPC observations |
1404 |
| Number of unpublished observations |
322 |
| RMS of observations |
0.329 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv21 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 |
0.006 |
| 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 NIMAv21 and JPL77 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.
Previous NIMA versions