(8405) Asbolus
This object has a more recent orbit available here
Object
| Object | (8405) Asbolus |
| Diameter(1) | 84 km |
| Dynamic class(1) | Centaur |
| Absolute magnitude | 9.07 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 18.049747 ± 0.000025 au |
| Eccentricity | 0.620480545 ± 0.000000584 |
| Inclination | 17.612397525 ± 0.000007149 ° |
| Longitude of ascending node | 5.805077 ± 0.000036 ° |
| Argument of perihelia | 290.724702 ± 0.000046 ° |
| Mean anomaly | 93.910282 ± 0.000208 ° |
| Orbital period | 76.69 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 8405_Asbolus_nima_v6.bsp |
| Date of first observation | 1995-03-28 |
| Date of last observation | 2018-09-14 |
| Number of observations used in the fit | 519 |
| Number of rejected observations | 11 |
| Number of DES observations | 0 |
| Number of MPC observations | 512 |
| Number of unpublished observations | 18 |
| RMS of observations | 0.450 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.079 | 0.022 |
| 2022-07 | 0.081 | 0.019 |
| 2023-01 | 0.090 | 0.022 |
| 2023-07 | 0.091 | 0.020 |
| 2024-01 | 0.100 | 0.023 |
| 2024-07 | 0.101 | 0.022 |
| 2025-01 | 0.111 | 0.024 |
| 2025-07 | 0.111 | 0.024 |
| 2026-01 | 0.122 | 0.025 |
Ephemeris comparison
Difference between NIMAv6 and JPL47 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.