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Comet

PANSTARRS

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C/2021 A9 (PANSTARRS)

Orbital elements

Semi-major axis
-2,456.413 AU
Eccentricity
1.0032
Inclination
158.02°
Perihelion
7.76 AU
Longitude of ascending node
314.84°
Argument of periapsis
211.45°
Epoch · J2000
JD 2460279.87993 (perihelion)
Orbit class · HYP
Hyperbolic comet
Earth MOID · 2,645.4 LD
6.7974 AU

Orbit quality

Observations used
449
Data arc
5.1 years
First observed
12 December 2020
Last observed
19 January 2026
Residual RMS
0.55 ″
Solution · Otto Matic
7 March 2026

Visual & observation

Absolute magnitude (H)
6.6
Total magnitude M₁ · K₁ 9.3
6.6

Discovery & classification

Also known as 2021 A9

Named

Sources