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Borisov

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C/2019 Q4 (Borisov)

Orbital elements

Semi-major axis
-0.851 AU
Eccentricity
3.3565
Inclination
44.05°
Perihelion
2.007 AU
Longitude of ascending node
308.15°
Argument of periapsis
209.12°
Epoch · J2000
JD 2458826.05285 (perihelion)
Orbit class · HYP
Hyperbolic comet
Earth MOID · 425.3 LD
1.0929 AU

Orbit quality

Observations used
964
Data arc
584 days
First observed
24 February 2019
Last observed
30 September 2020
Residual RMS
0.4 ″
Solution · Davide Farnocchia
24 June 2024

Visual & observation

Absolute magnitude (H)
13.8
Total magnitude M₁ · K₁ 4.5
13.8

Discovery & classification

Also known as 2019 Q4

Named

Sources