Lemmon

Orbital elements

Semi-major axis

-2,137.19 AU

Eccentricity

1.0025

Inclination

33.42°

Perihelion

5.345 AU

Longitude of ascending node

101.33°

Argument of periapsis

68.05°

Epoch · J2000

JD 2461477.17174 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 1,758.1 LD

4.5177 AU

Orbit quality

Observations used

484

Data arc

4.57 years

First observed

11 November 2021

Last observed

9 June 2026

Residual RMS

0.5 ″

Solution · Otto Matic

18 June 2026

Visual & observation

Absolute magnitude (H)

5.5

Total magnitude M₁ · K₁ 12

5.5

Discovery & classification

Also known as 2025 A1