In Evidence
Discover how to observe the interstellar comet 3I/ATLAS as it passes through the inner Solar System in 2025 Read more...
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Comets
This section provides a comprehensive list of the bright comets currently visible in the sky. This list is updated with new information several times per day. Comets for which there is data from recent observations reported in the Comet Observation database (COBS) are listed first, in order of decreasing brightness. When data from recent observations is not available, the magnitude provided by the JPL Horizons datasets is used as an estimation of the brightness.
Legend of symbols: ⓘ
C/2024 J3 (ATLAS)
C/2024 J3 (ATLAS)
Magnitude: 15.7 (Observed - COBS)
Coma Diameter: 1.0'
Tail Length: n/a
Observation Date: 2025-07-04
Apparent: 19h 09m 35s -16° 38’ 42”
J2000: 19h 08m 06s -16° 41’ 14”
in Sagittarius
Coma Diameter: 1.0'
Tail Length: n/a
Observation Date: 2025-07-04
Apparent: 19h 09m 35s -16° 38’ 42”
J2000: 19h 08m 06s -16° 41’ 14”
in Sagittarius
C/2023 C2 (ATLAS)
C/2023 C2 (ATLAS)
Magnitude: 15.9 (Observed - COBS)
Coma Diameter: n/a
Tail Length: 1.7'
Observation Date: 2025-07-05
Apparent: 23h 43m 35s +49° 19’ 48”
J2000: 23h 42m 19s +49° 11’ 18”
in Cassiopeia
Coma Diameter: n/a
Tail Length: 1.7'
Observation Date: 2025-07-05
Apparent: 23h 43m 35s +49° 19’ 48”
J2000: 23h 42m 19s +49° 11’ 18”
in Cassiopeia
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