(1173) Anchises
Object
| Object |
(1173) Anchises |
| Diameter(1) |
99 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
9.04 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460600.5 |
| Semi major axis |
5.273978 ± 0.000000 au |
| Eccentricity |
0.138291727 ± 0.000000014 |
| Inclination |
6.926753750 ± 0.000000517 ° |
| Longitude of ascending node |
283.911149 ± 0.000002 ° |
| Argument of perihelia |
41.524748 ± 0.000004 ° |
| Mean anomaly |
18.273021 ± 0.000006 ° |
| Orbital period |
12.11 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv6 |
| Observation file (documentation) |
omc_ast_NIMAv6.txt |
| bsp file |
1173_Anchises_nima_v6.bsp |
| Date of first observation |
1930-10-17 |
| Date of last observation |
2024-07-12 |
| Number of observations used in the fit |
5711 |
| Number of rejected observations |
35 |
| Number of DES observations |
0 |
| Number of MPC observations |
5384 |
| Number of unpublished observations |
95 |
| RMS of observations |
0.125 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) |
| 2024-01 |
0.012 |
0.005 |
| 2024-07 |
0.019 |
0.009 |
| 2025-01 |
0.017 |
0.008 |
| 2025-07 |
0.019 |
0.007 |
| 2026-01 |
0.021 |
0.008 |
| 2026-07 |
0.018 |
0.003 |
| 2027-01 |
0.023 |
0.004 |
| 2027-07 |
0.016 |
0.001 |
| 2028-01 |
0.022 |
0.003 |
Ephemeris comparison
Difference between NIMAv6 and JPL74 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