(5027) Androgeos
This object has a more recent orbit available here
Object
| Object | (5027) Androgeos |
| Diameter(1) | 59 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 9.88 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2461200.5 |
| Semi major axis | 5.294213 ± 0.000000 au |
| Eccentricity | 0.064636823 ± 0.000000013 |
| Inclination | 31.453672178 ± 0.000000265 ° |
| Longitude of ascending node | 78.213500 ± 0.000000 ° |
| Argument of perihelia | 346.049605 ± 0.000008 ° |
| Mean anomaly | 101.236556 ± 0.000007 ° |
| Orbital period | 12.18 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 5027_Androgeos_nima_v2.bsp |
| Date of first observation | 1953-02-14 |
| Date of last observation | 2026-01-11 |
| Number of observations used in the fit | 5261 |
| Number of rejected observations | 225 |
| Number of DES observations | 0 |
| Number of MPC observations | 4879 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.128 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 | 0.019 | 0.011 |
| 2024-07 | 0.016 | 0.005 |
| 2025-01 | 0.026 | 0.002 |
| 2025-07 | 0.020 | 0.002 |
| 2026-01 | 0.022 | 0.013 |
| 2026-07 | 0.020 | 0.010 |
| 2027-01 | 0.018 | 0.015 |
| 2027-07 | 0.019 | 0.015 |
| 2028-01 | 0.016 | 0.015 |
Ephemeris comparison
Difference between NIMAv2 and JPL70 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.