Interstellar comet 3I/Atlas records a speed of 57 km/s as it approaches the Solar System. The object follows a hyperbolic trajectory, which allows it to escape the Sun’s gravitational pull without entering orbit. Astronomers confirm origin in another star system through telescopic observations.
The detection occurred recently, with the comet being the third confirmed after ‘Oumuamua and Borisov. The initial speed exceeds that necessary for escape, resulting in a deviation from the route similar to a gravitational slingshot. The Sun influences objects up to 3.8 light years away, but does not capture the 3I/Atlas.
- 3I/Atlas speed: 57 km/s;
- Comparison with ‘Oumuamua: 26 km/s;
- Comparison with Borisov: 33 km/s.
Origin and ejection of interstellar objects
Bodies like 3I/Atlas orbited distant stars before the expulsion. Gravitational interactions or stellar explosions cause ejection into interstellar space.
These objects travel for millions of years until they cross systems like the Solar. Telescopes identify trajectories not tied to the Sun to confirm external nature.
Hyperbolic trajectory in detail
The hyperbolic trajectory indicates speed greater than the local escape velocity at each point. The 3I/Atlas enters the Solar System, undergoes deviation and leaves without forming an orbit.
Solar gravity changes direction, but does not reduce speed enough for capture. Observations track current path to deep space.
Calculations predict the point of greatest approximation, with interaction lasting a few weeks. Computer models simulate the gravitational slingshot effect.
Comparisons with solar comets
Comets in the Solar System reach tens of km/s at perihelion. Interstellar objects maintain velocities inherited from the galactic medium.
The difference highlights the external origin of the 3I/Atlas. Spectroscopy analyzes composition to identify unique proportions of elements.
Acceleration in previous cases
‘Oumuamua exhibited unexpected acceleration in 2017 during its passage past the Sun. The degassing of trapped hydrogen explains the phenomenon as natural propulsion.
Solar heat releases gas from inside the object. Alternative hypotheses lack concrete evidence.
Gravitational interaction effects
The passage curves the trajectory of the 3I/Atlas at a calculated angle. Observatories monitor for refiningair real-time orbital data.
Kinetic energy prevails over solar attraction. The object maintains perpetual motion through the cosmos after exit.
Chemical composition analysis
Studies reveal common elements in different proportions of solar systems. The analysis reinforces the classification as interstellar.
Telescopes capture spectra to compare with local materials. Results confirm absence of connection with the Sun.
