Astronomy ❯ Celestial Objects

Comets

Comet Lemmon Interstellar Comets C/2023 A3 12P/Pons-Brooks Long-Period Comets C/2023 A3 Tsuchinshan-ATLAS Interstellar Objects 3I/ATLAS Visibility Non-Periodic Comets Observation Characteristics Comet A3-Tsuchinshan-ATLAS C/2023 A3 (Tsuchinshan-ATLAS) Comet A3 Comet Tsuchinshan–ATLAS Tsuchinshan-Atlas C/2023 A3 Tsuchinshan–ATLAS Tsuchinshan-ATLAS C/2023 A3 Tsichinshan-ATLAS ATLAS Comet Comet C/2024 G3 (ATLAS) Comet Nishimura C/2023 P1 (Nishimura) Comet Tsuchinshan-ATLAS Halley's Comet Comet 12P/Pons-Brooks Devil Comet Periodic Comets Observation Techniques Brightness Discovery C/2025 R2 Swan C/2025 K1 Comet C/2025 A6 (Lemmon) Comet SWAN C/2025 A6 Lemmon C/2025 R2 Diatomic Carbon Asteroid 2003 EH1 Short-Period Comets C/2025 R3 PanSTARRS C/2025 R3 (PanSTARRS) Comet C/2025 R3 (Pan-STARRS) Comet R3 Pan-STARRS Comet 10P/Tempel 2

Comet Pan‑STARRS Reaches Perihelion Sunday, Closing a Brief Pre‑Dawn Viewing Window

Perihelion marks a short viewing peak for northern skywatchers.

Brightening Comet Pan‑STARRS Enters Pre‑Dawn View for Northern Skywatchers

JUICE Releases Best-Yet Image of Interstellar Comet 3I/ATLAS as Data Flow Begins

Quadrantids Set to Peak Jan. 3–4, but Full Moon Will Mute the Show

Comet Lemmon Stays Bright as Final Easy Viewing Window Closes

Twin Comets Lemmon and SWAN Light Up Northern Skies as Brief Viewing Window Peaks

Twin Green Comets Enter Prime Viewing Week Before Closest Approaches

Comets Lemmon and SWAN Poised for Best Viewing Oct. 20–21