(8405) Asbolus
Object
| Object |
(8405) Asbolus |
| Diameter(1) |
84 km |
| Dynamic class(1) |
Centaur |
| Absolute magnitude |
9.07 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
18.049748 ± 0.000005 au |
| Eccentricity |
0.620480580 ± 0.000000069 |
| Inclination |
17.612405529 ± 0.000001574 ° |
| Longitude of ascending node |
5.805116 ± 0.000015 ° |
| Argument of perihelia |
290.724666 ± 0.000019 ° |
| Mean anomaly |
93.910271 ± 0.000040 ° |
| Orbital period |
76.69 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv7 |
| Observation file (documentation) |
omc_ast_NIMAv7.txt |
| bsp file |
8405_Asbolus_nima_v7.bsp |
| Date of first observation |
1995-03-28 |
| Date of last observation |
2023-12-30 |
| Number of observations used in the fit |
520 |
| Number of rejected observations |
13 |
| Number of DES observations |
0 |
| Number of MPC observations |
512 |
| Number of unpublished observations |
21 |
| RMS of observations |
0.449 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.005 |
0.005 |
| 2023-07 |
0.004 |
0.004 |
| 2024-01 |
0.005 |
0.005 |
| 2024-07 |
0.005 |
0.005 |
| 2025-01 |
0.006 |
0.005 |
| 2025-07 |
0.006 |
0.005 |
| 2026-01 |
0.006 |
0.005 |
| 2026-07 |
0.007 |
0.005 |
| 2027-01 |
0.007 |
0.006 |
Ephemeris comparison
Difference between NIMAv7 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.
Previous NIMA versions