(68444) 2001RH142
This object has a more recent orbit available here
Object
| Object | (68444) 2001RH142 |
| Diameter(1) | 30 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 11.62 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 5.206863 ± 0.000000 au |
| Eccentricity | 0.025970428 ± 0.000000090 |
| Inclination | 30.059457487 ± 0.000005721 ° |
| Longitude of ascending node | 123.392547 ± 0.000020 ° |
| Argument of perihelia | 88.117324 ± 0.000137 ° |
| Mean anomaly | 60.923630 ± 0.000131 ° |
| Orbital period | 11.88 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 68444_2001RH142_nima_v3.bsp |
| Date of first observation | 1994-01-17 |
| Date of last observation | 2022-07-14 |
| Number of observations used in the fit | 1452 |
| Number of rejected observations | 3 |
| Number of DES observations | 15 |
| Number of MPC observations | 1423 |
| Number of unpublished observations | 17 |
| RMS of observations | 0.400 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.028 | 0.024 |
| 2022-07 | 0.046 | 0.039 |
| 2023-01 | 0.036 | 0.030 |
| 2023-07 | 0.058 | 0.044 |
| 2024-01 | 0.043 | 0.032 |
| 2024-07 | 0.061 | 0.038 |
| 2025-01 | 0.050 | 0.029 |
| 2025-07 | 0.059 | 0.031 |
| 2026-01 | 0.057 | 0.025 |
Ephemeris comparison
Difference between NIMAv3 and JPL31 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.