☄️ Hermione (asteroide 121)
Hermione (asteroid 121) today: 2.811 AU from Earth (420.5 million km), heliocentric distance 3.633 AU, orbital period 6.428 years. Computed via Kepler solver with JPL SBDB osculating elements.
Position now (2026-04-29 08:44 UTC)
| Heliocentric distance: | 3.6330 AU |
| Geocentric distance: | 2.8108 AU (420.5 million km) |
| Geocentric ecliptic longitude: | 259.878° |
| Geocentric ecliptic latitude: | 0.589° |
| RA J2000 (approximate): | 259.038° |
| Dec J2000 (approximate): | -22.462° |
| True anomaly: | -120.482° |
Orbital elements (Keplerian)
| Semi-major axis (a): | 3.4570 AU |
| Eccentricity (e): | 0.12464 |
| Inclination (i): | 7.566° |
| Long. ascending node (Omega): | 72.875° |
| Argument of perihelion (omega): | 297.016° |
| Mean anomaly at epoch (M0): | 227.974° |
| Osculation epoch (JD): | 2461000.5 |
| Orbital period: | 6.428 years |
About Hermione
Discovered in 1872 by James Craig Watson. IAU designation: 121 Hermione. Estimated diameter: 209 km. Absolute magnitude H: 7.40.
Binario com lua descoberta em 2002.
Limitation
Osculating elements are from epoch 2461000.5 JD. Keplerian propagation ignores perturbations (especially Jupiter for belt asteroids). For precision beyond months, consult JPL Horizons.
See all asteroids, methodology, precision.