(38628) Huya
This object has a more recent orbit available here
Object
| Object | (38628) Huya |
| Diameter(1) | 411 km |
| Dynamic class(1) | plutino |
| Absolute magnitude | 4.85 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 39.200200 ± 0.000505 au |
| Eccentricity | 0.272260606 ± 0.000008009 |
| Inclination | 15.475479204 ± 0.000001698 ° |
| Longitude of ascending node | 169.379539 ± 0.000034 ° |
| Argument of perihelia | 67.708066 ± 0.000229 ° |
| Mean anomaly | 14.291591 ± 0.000202 ° |
| Orbital period | 245.44 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv11 |
| Observation file |
omc_ast_NIMAv11.txt |
| bsp file | 38628_Huya_nima_v11.bsp |
| Date of first observation | 1996-04-09 |
| Date of last observation | 2024-07-06 |
| Number of observations used in the fit | 1086 |
| Number of rejected observations | 12 |
| Number of DES observations | 0 |
| Number of MPC observations | 889 |
| Number of unpublished observations | 209 |
| RMS of observations | 0.322 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv11 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.014 | 0.011 |
| 2024-07 | 0.009 | 0.006 |
| 2025-01 | 0.023 | 0.012 |
| 2025-07 | 0.021 | 0.007 |
| 2026-01 | 0.035 | 0.014 |
| 2026-07 | 0.035 | 0.008 |
| 2027-01 | 0.049 | 0.016 |
| 2027-07 | 0.052 | 0.010 |
| 2028-01 | 0.065 | 0.017 |
Ephemeris comparison
Difference between NIMAv11 and JPL47 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.