SOHO

Orbital elements

Semi-major axis

-889.893 AU

Eccentricity

1.0002

Inclination

62.93°

Perihelion

0.153 AU

Longitude of ascending node

351.65°

Argument of periapsis

110.56°

Epoch · J2000

JD 2450942.11884 (perihelion)

Orbit class · HYP

Hyperbolic comet

Earth MOID · 122.9 LD

0.3157 AU

Orbit quality

Observations used

318

Data arc

94 days

First observed

3 May 1998

Last observed

5 August 1998

Residual RMS

0.61 ″

Solution · Otto Matic

15 April 2021

Visual & observation

Absolute magnitude (H)

6.5

Total magnitude M₁ · K₁ 7.5

6.5

Discovery & classification

Also known as 1998 J1