(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Number of unpublished observations | 0 |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.