(32615) 2001QU277
This object has a more recent orbit available here
Object
| Object | (32615) 2001QU277 |
| Diameter(1) | 38 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 11.13 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 5.155837 ± 0.000000 au |
| Eccentricity | 0.033620657 ± 0.000000015 |
| Inclination | 17.551632114 ± 0.000000313 ° |
| Longitude of ascending node | 100.400917 ± 0.000001 ° |
| Argument of perihelia | 226.881921 ± 0.000026 ° |
| Mean anomaly | 297.729876 ± 0.000031 ° |
| Orbital period | 11.71 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 32615_2001QU277_nima_v4.bsp |
| Date of first observation | 1977-10-06 |
| Date of last observation | 2022-07-16 |
| Number of observations used in the fit | 2072 |
| Number of rejected observations | 4 |
| Number of DES observations | 7 |
| Number of MPC observations | 1750 |
| Number of unpublished observations | 1 |
| RMS of observations | 0.109 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.013 | 0.005 |
| 2022-07 | 0.020 | 0.008 |
| 2023-01 | 0.018 | 0.005 |
| 2023-07 | 0.032 | 0.004 |
| 2024-01 | 0.024 | 0.002 |
| 2024-07 | 0.037 | 0.008 |
| 2025-01 | 0.029 | 0.006 |
| 2025-07 | 0.035 | 0.015 |
| 2026-01 | 0.033 | 0.013 |
Ephemeris comparison
Difference between NIMAv4 and JPL39 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.