Rahul Somvanshi
Quasi‑moon 2025 PN7 — Simple Explainer
2025 PN7 is a small near‑Earth asteroid moving in step with Earth around the Sun (1:1 resonance). It was spotted by Pan‑STARRS in August 2025. Archival tracking indicates ~60 years near Earth already, with proximity projected until about 2083. Estimates place its size near 18–36 m. Distances vary during its loop; modeling places the far side out to ~17 million km.
Orbit typeQuasi‑satellite/co‑orbital; appears to loop near Earth while orbiting the Sun
ClassArjuna‑type asteroid with Earth‑like orbit elements
Group countOne of a short list of Earth’s confirmed quasi‑moons
Orbit Visual — Play with the Year
Sun
Earth
2025 PN7
2025
Closest approachesNear‑Earth loop; prior assessments include ~4 million km scale passages
Phase windowNear since mid‑20th century; projected proximity to ~2083
BrightnessVery faint; challenging for small telescopes
For mission design context, see asteroid mission ops and NASA databases above.
Recap
The object’s designation, discovery timing, size range, co‑orbital motion with Earth, rough distance span, and expected proximity window were listed.
