A scientist from Nasa identified a new meteor shower by analyzing millions of records collected by camera networks. The cluster of 282 meteors points to an as-yet undetected asteroid that fragments as it approaches Sol. The discovery was detailed in a study published in Astrophysical Journal in March 2026.
The work uses data from automated observatories located on Canadá, Japão, Califórnia and Europa. Esses equipment records shooting stars every night. Most of the fragments that generate meteors come from comets. However, asteroids can also release dust and pieces when they undergo thermal stress or other processes.
Como meteors form in the atmosphere
Quando a grain of space sand enters the Earth’s atmosphere, it heats rapidly at more than 24 kilometers per second. The surface vaporizes and forms an electrically charged gas that makes the object glow for a fraction of a second. Larger Objetos produce brighter bolides.
Redes cameras capture these events in real time. Cientistas processes the data to determine the original orbit of the fragments. Esse method allows you to identify debris streams that Terra periodically crosses. Cada known meteor shower originates from a parent body, usually a comet.
Diferença between active comets and asteroids
Cometas are icy bodies from the distant regions of Sistema Solar. As they approach Sol, the ice sublimates and releases dust, creating visible tails. Asteroides, formed closer to Sol, is rocky and dry in most cases.
Alguns asteroids exhibit activity when solar heat causes surface cracks or releases trapped gases. The best-known example is asteroid 3200 Phaethon, progenitor of December’s Geminídeas. Ele releases material during passes close to Sol. The new identified current follows a low perihelion orbit, compatible with this type of thermal process.
The meteors in the newly discovered cluster are moderately fragile, more resistant than those from comets, but still show signs of recent fragmentation. Isso suggests that the intense heat is disintegrating the surface of the progenitor body.
Método used in cluster detection
- Análise orbital similarity statistics for more than 235 thousand meteors
- Aplicação of criteria as DN to identify compact clusters
- Comparação with KDE-generated null distributions to validate significance
- 282-member Isolamento via DBSCAN algorithm
- Cruzamento data between four independent camera networks
Essa approach allowed the cluster to stand out even amidst the sporadic background of meteors. The study confirms that the current is recent and diffuse, concentrated in a region of the sky associated with southern Virginídeas.
Importância for monitoring objects close to Terra
Meteor shower detection works as a sensitive probe to locate active asteroids invisible to traditional telescopes. Debris spreads along the orbit over time due to gravitational perturbations of the planets.
Identificar these chains help map hidden populations of objects close to Terra. Essa information contributes to planetary defense by revealing bodies that may pass close to our planet. The parent asteroid of the new shower has not yet been directly observed.
Próximos steps in investigation
Nasa’s NEO mission Surveyor, scheduled to launch in 2027, should improve the detection of dark asteroids and those approaching Sol. The space telescope was designed especially for planetary defense tasks.
Enquanto this, camera networks continue to record events. Cientistas plans to monitor possible reinforcements of the new rain in future years to refine the progenitor’s orbit. The discovery reinforces the value of meteor observations as a complement to telescopes.
The study highlights that asteroids can change over time due to thermal forces, impacts or rapid rotation. Entender these processes improve knowledge about the evolution of Sistema Solar and the diversity of meteorites that reach Terra.
