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Comet

SWAN

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C/2025 F2 (SWAN)

Orbital elements

Semi-major axis
-2,475.175 AU
Eccentricity
1.0001
Inclination
90.36°
Perihelion
0.333 AU
Longitude of ascending node
329.84°
Argument of periapsis
153.84°
Epoch · J2000
JD 2460796.66076 (perihelion)
Orbit class · HYP
Hyperbolic comet
Earth MOID · 244.5 LD
0.6282 AU
Tisserand (Jupiter)
-0.005

Orbit quality

Observations used
375
Data arc
215 days
First observed
24 September 2024
Last observed
27 April 2025
Residual RMS
0.59 ″
Solution · Davide Farnocchia
30 September 2025

Visual & observation

Absolute magnitude (H)
12.3
Total magnitude M₁ · K₁ 13
12.3

Discovery & classification

Also known as 2025 F2

Named

Sources