Wirtanen

Orbital elements

Semi-major axis

-167.619 AU

Eccentricity

1.0168

Inclination

97.32°

Perihelion

2.808 AU

Longitude of ascending node

311.76°

Argument of periapsis

8.85°

Epoch · J2000

JD 2432383.34002 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 701.6 LD

1.8028 AU

Orbit quality

Observations used

3

Data arc

370 days

First observed

26 July 1947

Last observed

30 July 1948

Residual RMS

0 ″

Solution · Otto Matic

15 April 2021

Discovery & classification

Also known as 1947 O1