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Comet

Nishimura

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C/2021 O1 (Nishimura)

Orbital elements

Semi-major axis
-257.856 AU
Eccentricity
1.0031
Inclination
27.57°
Perihelion
0.787 AU
Longitude of ascending node
41.63°
Argument of periapsis
74.44°
Epoch · J2000
JD 2459440.42791 (perihelion)
Orbit class · HYP
Hyperbolic comet
Earth MOID · 51.5 LD
0.1324 AU

Orbit quality

Observations used
59
Data arc
13 days
First observed
23 July 2021
Last observed
5 August 2021
Residual RMS
0.68 ″
Solution · Otto Matic
24 April 2023

Visual & observation

Absolute magnitude (H)
10.8
Total magnitude M₁ · K₁ 10
10.8

Discovery & classification

Also known as 2021 O1

Named

Sources