☄️ Helena (asteroide 101)
Helena (asteroid 101) today: 2.382 AU from Earth (356.4 million km), heliocentric distance 2.231 AU, orbital period 4.153 years. Computed via Kepler solver with JPL SBDB osculating elements.
Position now (2026-06-12 00:52 UTC)
| Heliocentric distance: | 2.2310 AU |
| Geocentric distance: | 2.3821 AU (356.4 million km) |
| Geocentric ecliptic longitude: | 12.035° |
| Geocentric ecliptic latitude: | 0.592° |
| RA J2000 (approximate): | 10.836° |
| Dec J2000 (approximate): | 5.302° |
| True anomaly: | 15.818° |
Orbital elements (Keplerian)
| Semi-major axis (a): | 2.5837 AU |
| Eccentricity (e): | 0.14052 |
| Inclination (i): | 10.192° |
| Long. ascending node (Omega): | 343.358° |
| Argument of perihelion (omega): | 347.757° |
| Mean anomaly at epoch (M0): | 323.652° |
| Osculation epoch (JD): | 2461000.5 |
| Orbital period: | 4.153 years |
About Helena
Discovered in 1868 by James Craig Watson. IAU designation: 101 Helena. Estimated diameter: 65.8 km. Absolute magnitude H: 8.39.
Asteroide tipo S do cinturao medio.
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.