Lemmon

Orbital elements

Semi-major axis

-4,562.197 AU

Eccentricity

1.0014

Inclination

60.38°

Perihelion

6.475 AU

Longitude of ascending node

225.13°

Argument of periapsis

129.76°

Epoch · J2000

JD 2455906.75070 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 2,228.3 LD

5.7257 AU

Orbit quality

Observations used

278

Data arc

4.34 years

First observed

24 September 2009

Last observed

27 January 2014

Residual RMS

0.77 ″

Solution · Otto Matic

15 April 2021

Visual & observation

Absolute magnitude (H)

11.7

Total magnitude M₁ · K₁ 4.5

11.7

Discovery & classification

Also known as 2009 S3