Lemmon

Orbital elements

Semi-major axis

-493.879 AU

Eccentricity

1.008

Inclination

130.1°

Perihelion

3.931 AU

Longitude of ascending node

321.01°

Argument of periapsis

60.65°

Epoch · J2000

JD 2455546.76220 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 1,243.9 LD

3.1963 AU

Tisserand (Jupiter)

-1.59

Orbit quality

Observations used

966

Data arc

2.51 years

First observed

22 October 2009

Last observed

27 April 2012

Residual RMS

0.59 ″

Solution · Otto Matic

15 April 2021

Visual & observation

Absolute magnitude (H)

5.2

Total magnitude M₁ · K₁ 15.8

5.2

Discovery & classification

Also known as 2009 UG89