The interstellar comet 3I/Atlas, the third confirmed object of this type, crosses Sistema Solar at a speed of 57 km/s. The hyperbolic trajectory indicates that the body will not be captured by the gravity of Sol and will definitely leave the region after passing. Observações carried out in 2025 confirmed the external origin of the comet.
Astronomers recently detected 3I/Atlas using ground-based and space-based telescopes. The recorded speed surpasses that of ‘Oumuamua (26 km/s) and Borisov (33 km/s), the two previous interstellar visitors. Dados updated orbitals show that the object maintains enough kinetic energy to escape.
Trajectory characteristics
Hyperbolic motion occurs when the speed exceeds the escape limit at a certain point in Sistema Solar. The 3I/Atlas entered the region, will undergo gravitational deflection and will move out without forming an orbit.
Interacting with the Sol changes direction, but does not reduce speed to the point of retention. Simulações computational data indicate that the closest approach will last a few seconds.
Comparison with previous objects
‘Oumuamua, discovered in 2017, showed non-gravitational acceleration detected by telescopes. Borisov, identified in 2019, exhibited a coma and tail typical of traditional comets.
The 3I/Atlas records the highest speed among the three visitors confirmed so far. The difference reinforces the diversity of objects expelled from other star systems.
Interstellar speed and origin
- 3I/Atlas: 57 km/s
- Borisov: 33 km/s
- ‘Oumuamua: 26 km/s
These values demonstrate that interstellar objects arrive at speeds significantly higher than local comets at perihelion. The external origin is confirmed by the combination of high speed and open trajectory.
Observations in progress
Telescopes continue to collect spectroscopic data from 3I/Atlas to determine chemical composition. The spectra allow you to compare proportions of elements with materials from Sistema Solar.
Researchers refine orbital parameters in real time with new images. Detailed compositional analysis can reveal characteristics of the original star system.
Current movement details
The comet maintains a trajectory that will take it away from Sol after the gravitational curve. The total kinetic energy remains positive with respect to Sistema Solar at all points.
Observatories around the world track the object as it gradually moves away from the inner region. The passage represents a rare opportunity to study material formed outside our system.
The confirmation of 3I/Atlas as the third interstellar comet expands knowledge about the population of wandering objects in Via Láctea. The data collected contributes to understanding ejection processes in other planetary systems.