(68444) 2001RH142
Object
| Object |
(68444) 2001RH142 |
| Diameter(1) |
30 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
11.66 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
5.198784 ± 0.000000 au |
| Eccentricity |
0.026073639 ± 0.000000082 |
| Inclination |
30.073868341 ± 0.000005458 ° |
| Longitude of ascending node |
123.394546 ± 0.000017 ° |
| Argument of perihelia |
85.171929 ± 0.000124 ° |
| Mean anomaly |
146.955273 ± 0.000118 ° |
| Orbital period |
11.85 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv6 |
| Observation file (documentation) |
omc_ast_NIMAv6.txt |
| bsp file |
68444_2001RH142_nima_v6.bsp |
| Date of first observation |
1994-01-17 |
| Date of last observation |
2025-06-27 |
| Number of observations used in the fit |
1899 |
| Number of rejected observations |
239 |
| Number of DES observations |
15 |
| Number of MPC observations |
2100 |
| Number of unpublished observations |
23 |
| RMS of observations |
0.445 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.033 |
0.026 |
| 2024-07 |
0.047 |
0.032 |
| 2025-01 |
0.039 |
0.025 |
| 2025-07 |
0.049 |
0.027 |
| 2026-01 |
0.049 |
0.023 |
| 2026-07 |
0.051 |
0.027 |
| 2027-01 |
0.061 |
0.030 |
| 2027-07 |
0.054 |
0.030 |
| 2028-01 |
0.075 |
0.043 |
Ephemeris comparison
Difference between NIMAv6 and JPL44 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