Hill

Orbital elements

Semi-major axis

-1,918.552 AU

Eccentricity

1.0013

Inclination

95.82°

Perihelion

2.564 AU

Longitude of ascending node

172.94°

Argument of periapsis

223.73°

Epoch · J2000

JD 2455197.77629 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 686.6 LD

1.7643 AU

Orbit quality

Observations used

764

Data arc

137 days

First observed

30 July 2009

Last observed

14 December 2009

Residual RMS

0.53 ″

Solution · Otto Matic

15 April 2021

Visual & observation

Absolute magnitude (H)

4.9

Total magnitude M₁ · K₁ 21

4.9

Discovery & classification

Also known as 2009 O4