(38628) Huya
Object
| Object |
(38628) Huya |
| Diameter(1) |
406 km |
| Dynamic class(1) |
plutino |
| Absolute magnitude |
4.85 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
39.431788 ± 0.000522 au |
| Eccentricity |
0.275917161 ± 0.000008192 |
| Inclination |
15.475039684 ± 0.000001728 ° |
| Longitude of ascending node |
169.463007 ± 0.000034 ° |
| Argument of perihelia |
68.322446 ± 0.000245 ° |
| Mean anomaly |
10.589907 ± 0.000133 ° |
| Orbital period |
247.62 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv10 |
| Observation file (documentation) |
omc_ast_NIMAv10.txt |
| bsp file |
38628_Huya_nima_v10.bsp |
| Date of first observation |
1996-04-09 |
| Date of last observation |
2023-08-11 |
| Number of observations used in the fit |
1014 |
| Number of rejected observations |
12 |
| Number of DES observations |
0 |
| Number of MPC observations |
821 |
| Number of unpublished observations |
205 |
| RMS of observations |
0.320 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv10 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.007 |
0.009 |
| 2023-07 |
0.006 |
0.005 |
| 2024-01 |
0.014 |
0.011 |
| 2024-07 |
0.009 |
0.006 |
| 2025-01 |
0.024 |
0.012 |
| 2025-07 |
0.021 |
0.007 |
| 2026-01 |
0.036 |
0.014 |
| 2026-07 |
0.035 |
0.008 |
| 2027-01 |
0.051 |
0.016 |
Ephemeris comparison
Difference between NIMAv10 and JPL42 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