(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 | 0.032380735 ± 0.000000121 |
| Inclination | 17.545661532 ± 0.000011153 ° |
| Longitude of ascending node | 100.417814 ± 0.000030 ° |
| Argument of perihelia | 223.797875 ± 0.000257 ° |
| Mean anomaly | 199.890462 ± 0.000253 ° |
| Orbital period | 11.75 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 32615_2001QU277_nima_v1.bsp |
| Date of first observation | 1977-10-06 |
| Date of last observation | 2018-05-23 |
| Number of observations used in the fit | 854 |
| Number of rejected observations | 0 |
| Number of DES observations | 7 |
| Number of MPC observations | 847 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.518 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.049 | 0.042 |
| 2018-07 | 0.038 | 0.031 |
| 2019-01 | 0.058 | 0.042 |
| 2019-07 | 0.051 | 0.034 |
| 2020-01 | 0.067 | 0.043 |
| 2020-07 | 0.069 | 0.042 |
| 2021-01 | 0.076 | 0.045 |
| 2021-07 | 0.093 | 0.055 |
| 2022-01 | 0.084 | 0.043 |
Ephemeris comparison
Difference between NIMAv1 and JPL22 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.