☄️ Melpomene (asteroide 18)
Melpomene (asteroid 18) today: 1.841 AU from Earth (275.5 million km), heliocentric distance 2.377 AU, orbital period 3.478 years. Computed via Kepler solver with JPL SBDB osculating elements.
Position now (2026-05-01 08:26 UTC)
| Heliocentric distance: | 2.3767 AU |
| Geocentric distance: | 1.8415 AU (275.5 million km) |
| Geocentric ecliptic longitude: | 290.989° |
| Geocentric ecliptic latitude: | 11.721° |
| RA J2000 (approximate): | 290.877° |
| Dec J2000 (approximate): | -10.207° |
| True anomaly: | -111.541° |
Orbital elements (Keplerian)
| Semi-major axis (a): | 2.2956 AU |
| Eccentricity (e): | 0.21796 |
| Inclination (i): | 10.131° |
| Long. ascending node (Omega): | 150.329° |
| Argument of perihelion (omega): | 228.052° |
| Mean anomaly at epoch (M0): | 227.264° |
| Osculation epoch (JD): | 2461000.5 |
| Orbital period: | 3.478 years |
About Melpomene
Discovered in 1852 by John Russell Hind. IAU designation: 18 Melpomene. Estimated diameter: 140.6 km. Absolute magnitude H: 6.35.
Asteroide tipo S, ja foi observado ocultando estrelas.
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.