(38628) Huya
Object
| Object |
(38628) Huya |
| Diameter(1) |
411 km |
| Dynamic class(1) |
plutino |
| Absolute magnitude |
4.85 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
39.199432 ± 0.000486 au |
| Eccentricity |
0.272445071 ± 0.000007718 |
| Inclination |
15.476138626 ± 0.000001662 ° |
| Longitude of ascending node |
169.344235 ± 0.000034 ° |
| Argument of perihelia |
67.588169 ± 0.000219 ° |
| Mean anomaly |
15.176783 ± 0.000214 ° |
| Orbital period |
245.43 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv12 |
| Observation file (documentation) |
omc_ast_NIMAv12.txt |
| bsp file |
38628_Huya_nima_v12.bsp |
| Date of first observation |
1996-04-09 |
| Date of last observation |
2025-06-30 |
| Number of observations used in the fit |
1117 |
| Number of rejected observations |
12 |
| Number of DES observations |
0 |
| Number of MPC observations |
918 |
| Number of unpublished observations |
211 |
| RMS of observations |
0.323 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv12 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.013 |
0.010 |
| 2024-07 |
0.009 |
0.006 |
| 2025-01 |
0.022 |
0.012 |
| 2025-07 |
0.020 |
0.007 |
| 2026-01 |
0.034 |
0.014 |
| 2026-07 |
0.033 |
0.008 |
| 2027-01 |
0.047 |
0.015 |
| 2027-07 |
0.049 |
0.010 |
| 2028-01 |
0.063 |
0.017 |
Ephemeris comparison
Difference between NIMAv12 and JPL51 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.
Previous NIMA versions