(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 | 10.58 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460800.5 |
| Semi major axis | 5.266269 ± 0.000000 au |
| Eccentricity | 0.078113192 ± 0.000000016 |
| Inclination | 11.644840185 ± 0.000000375 ° |
| Longitude of ascending node | 252.106071 ± 0.000003 ° |
| Argument of perihelia | 118.236459 ± 0.000010 ° |
| Mean anomaly | 10.339857 ± 0.000015 ° |
| Orbital period | 12.09 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 17365_Thymbraeus_nima_v3.bsp |
| Date of first observation | 1954-11-23 |
| Date of last observation | 2025-07-13 |
| Number of observations used in the fit | 3950 |
| Number of rejected observations | 194 |
| Number of DES observations | 0 |
| Number of MPC observations | 3660 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.146 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.017 | 0.007 |
| 2024-07 | 0.025 | 0.009 |
| 2025-01 | 0.024 | 0.009 |
| 2025-07 | 0.027 | 0.005 |
| 2026-01 | 0.032 | 0.006 |
| 2026-07 | 0.027 | 0.002 |
| 2027-01 | 0.037 | 0.004 |
| 2027-07 | 0.025 | 0.006 |
| 2028-01 | 0.035 | 0.011 |
Ephemeris comparison
Difference between NIMAv3 and JPL53 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.