(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 | 11.00 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 5.167892 ± 0.000001 au |
| Eccentricity | 0.032380750 ± 0.000000123 |
| Inclination | 17.545661861 ± 0.000002455 ° |
| Longitude of ascending node | 100.417817 ± 0.000030 ° |
| Argument of perihelia | 223.797909 ± 0.000255 ° |
| Mean anomaly | 199.890423 ± 0.000249 ° |
| Orbital period | 11.75 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 32615_2001QU277_nima_v3.bsp |
| Date of first observation | 1977-10-06 |
| Date of last observation | 2020-08-16 |
| Number of observations used in the fit | 1324 |
| Number of rejected observations | 3 |
| Number of DES observations | 7 |
| Number of MPC observations | 1319 |
| Number of unpublished observations | 1 |
| RMS of observations | 0.437 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) |
| 2021-01 | 0.021 | 0.017 |
| 2021-07 | 0.030 | 0.028 |
| 2022-01 | 0.038 | 0.028 |
| 2022-07 | 0.061 | 0.045 |
| 2023-01 | 0.053 | 0.031 |
| 2023-07 | 0.089 | 0.044 |
| 2024-01 | 0.064 | 0.026 |
| 2024-07 | 0.090 | 0.034 |
| 2025-01 | 0.069 | 0.020 |
Ephemeris comparison
Difference between NIMAv3 and JPL35 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.