(17365) Thymbraeus
This object has a more recent orbit available here
Object
| Object | (17365) Thymbraeus |
| Diameter(1) | 45 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 10.57 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.267533 ± 0.000000 au |
| Eccentricity | 0.078339358 ± 0.000000017 |
| Inclination | 11.644109527 ± 0.000000375 ° |
| Longitude of ascending node | 252.111804 ± 0.000003 ° |
| Argument of perihelia | 118.080247 ± 0.000012 ° |
| Mean anomaly | 354.159080 ± 0.000018 ° |
| Orbital period | 12.09 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 17365_Thymbraeus_nima_v2.bsp |
| Date of first observation | 1954-11-23 |
| Date of last observation | 2024-07-13 |
| Number of observations used in the fit | 3255 |
| Number of rejected observations | 194 |
| Number of DES observations | 0 |
| Number of MPC observations | 2965 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.146 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.021 | 0.009 |
| 2024-07 | 0.031 | 0.011 |
| 2025-01 | 0.030 | 0.011 |
| 2025-07 | 0.034 | 0.006 |
| 2026-01 | 0.040 | 0.008 |
| 2026-07 | 0.033 | 0.002 |
| 2027-01 | 0.046 | 0.004 |
| 2027-07 | 0.031 | 0.007 |
| 2028-01 | 0.042 | 0.013 |
Ephemeris comparison
Difference between NIMAv2 and JPL48 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.